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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-Q
 
☒Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the Quarterly Period Ended March 31, 2022
for the Quarterly Period Ended March 31, 2021

OR
☐Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the transition period from             to
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Commission
File Number		Exact name of registrant as specified in its charter;
State of Incorporation;
Address and Telephone Number		IRS Employer
Identification No.
1-14756Ameren Corporation43-1723446
(Missouri Corporation)
1901 Chouteau Avenue
St. Louis, Missouri 63103
(314) 621-3222
1-2967Union Electric Company43-0559760
(Missouri Corporation)
1901 Chouteau Avenue
St. Louis, Missouri 63103
(314) 621-3222
1-3672Ameren Illinois Company37-0211380
(Illinois Corporation)
10 Executive Drive
Collinsville, Illinois 62234
(618) 343-8150
Securities Registered Pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Stock, $0.01 par value per shareAEENew York Stock Exchange


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Indicate by check mark whether the registrants: (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) have been subject to such filing requirements for the past 90 days.
Ameren CorporationYes☒No☐
Union Electric CompanyYes☒No☐
Ameren Illinois CompanyYes☒No☐
Indicate by check mark whether each registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).
Ameren CorporationYes☒No☐
Union Electric CompanyYes☒No☐
Ameren Illinois CompanyYes☒No☐
Indicate by check mark whether each registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Ameren CorporationLarge accelerated filer☒Accelerated filer☐Non-accelerated filer☐
Smaller reporting company☐Emerging growth company☐
Union Electric CompanyLarge accelerated filer☐Accelerated filer☐Non-accelerated filer☒
Smaller reporting company☐Emerging growth company☐
Ameren Illinois CompanyLarge accelerated filer☐Accelerated filer☐Non-accelerated filer☒
Smaller reporting company☐Emerging growth company☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
Ameren Corporation☐
Union Electric Company☐
Ameren Illinois Company☐
Indicate by check mark whether each registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
Ameren CorporationYes☐No☒
Union Electric CompanyYes☐No☒
Ameren Illinois CompanyYes☐No☒
The number of shares outstanding of each registrant’s classes of common stock as of April 30, 2021,29, 2022, was as follows:
RegistrantTitle of each class of common stockShares outstanding
Ameren CorporationCommon stock, $0.01 par value per share255,552,619258,226,506 
Union Electric CompanyCommon stock, $5 par value per share, held by Ameren Corporation102,123,834 
Ameren Illinois CompanyCommon stock, no par value, held by Ameren Corporation25,452,373 


This combined Form 10-Q is separately filed by Ameren Corporation, Union Electric Company, and Ameren Illinois Company. Each registrant hereto is filing on its own behalf all of the information contained in this quarterly report that relates to such registrant. Each registrant hereto is not filing any information that does not relate to such registrant, and therefore makes no representation as to any such information.


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Item 1.
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Consolidated Statement of Income and Comprehensive Income
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Consolidated Balance Sheet
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Consolidated Statement of Cash Flows
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Consolidated Statement of Shareholders’ Equity
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Union Electric Company (d/b/a Ameren Missouri)
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Consolidated Statement of Income (Loss)
8
Consolidated Balance Sheet
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Consolidated Statement of Cash Flows
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Consolidated Statement of Shareholders’ Equity
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Ameren Illinois Company (d/b/a Ameren Illinois)
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Statement of Income
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Balance Sheet
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Statement of Cash Flows
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Statement of Shareholders’ Equity
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2018
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Item 2.
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Item 3.
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Item 4.
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Item 1.
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Item 1A.
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Item 2.
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Item 6.
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GLOSSARY OF TERMS AND ABBREVIATIONS
We use the words “our,” “we” or “us” with respect to certain information that relates to Ameren, Ameren Missouri, and Ameren Illinois, collectively. When appropriate, subsidiaries of Ameren Corporation are named specifically as their various business activities are discussed. Refer to the Form 10-K for a complete listing of glossary terms and abbreviations. Only new or significantly changed terms and abbreviations are included below.
Form 10-K – The combined Annual Report on Form 10-K for the year ended December 31, 2020,2021, filed by the Ameren Companies with the SEC.
FORWARD-LOOKING STATEMENTS
Statements in this report not based on historical facts are considered “forward-looking” and, accordingly, involve risks and uncertainties that could cause actual results to differ materially from those discussed. Although such forward-looking statements have been made in good faith and are based on reasonable assumptions, there is no assurance that the expected results will be achieved. These statements include (without limitation) statements as to future expectations, beliefs, plans, projections, strategies, targets, estimates, objectives, events, conditions, and financial performance. In connection with the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995, we are providing this cautionary statement to identify important factors that could cause actual results to differ materially from those anticipated. The following factors, in addition to those discussed within Risk Factors in the Form 10-K and in this report, and elsewhere in this report and in our other filings with the SEC, could cause actual results to differ materially from management expectations suggested in such forward-looking statements:
•regulatory, judicial, or legislative actions, and any changes in regulatory policies and ratemaking determinations, that may change regulatory recovery mechanisms, such as those that may result from potential future orders and Ameren Missouri’s electric service and natural gas delivery service regulatory rate reviews filed withthe impact of a final ruling to be issued by the United States Court for the Eastern District of Missouri regarding its September 2019 remedy order for the Rush Island Energy Center, the MoPSC in March 2021,staff review of the planned Rush Island Energy Center retirement, the July 2020 appeal filed by Ameren Missouri, Ameren Illinois, and ATXI challenging the refund period related to the FERC’s May 2020 FERC order determining the allowed base ROE under the MISO tariff, the July 2020 appeal filed by Ameren Missouri, Ameren Illinois, and ATXI challenging the FERC’s rehearing denials in the transmission formula rate revision cases, Ameren Illinois’ request for rehearing of the March 2021 FERC order related to Ameren Illinois’ 2020 transmission formula rate update, and Ameren Illinois’ electric distribution service rate reconciliation request filed with the ICC in April 2021;2022;
•the length and severity of the COVID-19 pandemic, and its impacts on our business continuity plans and our results of operations, financial position, and liquidity, including but not limited to changes in customer demand resulting in changes to sales volumes,volumes; customers’ payment for our services and their use of deferred payment arrangements, future regulatory or legislative actions that could require suspension of customer disconnections and/or late fees, among other things, for an extended period of time,services; the health, welfare, and welfareavailability of our workforce and contractors,contractors; supplier disruptions,disruptions; delays in the completion of construction projects, which could impact our expected capital expenditures and rate base growth, Ameren Missouri’s ability to recover any forgone customer late fee revenues or incremental costs, our ability to meet customer energy-efficiency program goals and earn performance incentives related to those programs,growth; changes in how we operate our business and increased data security risks as a result of the transition to remote working arrangements for a significant portion of our workforce,workforce; and our ability to access the capital markets on reasonable terms and when needed;
•the effect and duration of Ameren Illinois’ election to participate inuse of the performance-based formula ratemaking framework for its electric distribution service under the IEIMA, which unless extended, expires at the endwill establish and allow for a reconciliation of 2022, andelectric distribution service rates through 2023, its participation in electric energy-efficiency programs, includingand the related impact of the direct relationship between Ameren Illinois’ ROE and the 30-year United States Treasury bond yields;
•the effect and duration of Ameren Illinois’ election to either utilize traditional regulatory rate reviews or MYRPs for electric distribution service ratemaking effective for rates beginning in 2024;
•the effect on Ameren Missouri’s investment plan and earnings if an extension to use PISA is not sought by Ameren Missouri or approved by the MoPSC;
•the effect on Ameren Missouri of any customer rate caps pursuant to Ameren Missouri’s election to use the PISA, including an extension of use beyond 2023 if requested by Ameren Missouri and approved by the MoPSC;MoPSC under current Missouri law, or beyond 2028 if requested and approved by the MoPSC if Missouri Senate Bill 745 is enacted;
•the effects of changes in federal, state, or local laws and other governmental actions, including monetary, fiscal, foreign trade, and energy policies;
•the effects of changes in federal, state, or local tax laws, regulations, interpretations, or rates, and challenges to the tax positions taken by the Ameren Companies, if any, as well as resulting effects on customer rates;
•the effects on energy prices and demand for our services resulting from technological advances, including advances in customer energy efficiency, electric vehicles, electrification of various industries, energy storage, and private generation sources, which generate electricity at the site of consumption and are becoming more cost-competitive;
•the effectiveness of Ameren Missouri’s customer energy-efficiency programs and the related revenues and performance incentives earned under its MEEIA programs;
•Ameren Illinois’ ability to achieve the performance standards applicable to its electric distribution business and the FEJA electric customer energy-efficiency goals and the resulting impact on its allowed ROE;
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•our ability to control costs and make substantial investments in our businesses, including our ability to recover costs and investments, and to earn our allowed ROEs, within frameworks established by our regulators, while maintaining affordability of our services for our customers;
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•the cost and availability of fuel, such as low-sulfur coal, natural gas, and enriched uranium used to produce electricity; the cost and availability of purchased power, zero emission credits, renewable energy credits, emission allowances, and natural gas for distribution; and the level and volatility of future market prices for such commodities and credits;
•disruptions in the delivery of fuel, failure of our fuel suppliers to provide adequate quantities or quality of fuel, or lack of adequate inventories of fuel, including nuclear fuel assemblies from the one NRC-licensed supplier of Ameren Missouri’s Callaway Energy Center assemblies;
•the cost and availability of transmission capacity for the energy generated by Ameren Missouri’s energy centers or required to satisfy Ameren Missouri’s energy sales;
•the effectiveness of our risk management strategies and our use of financial and derivative instruments;
•the ability to obtain sufficient insurance, including insurance for Ameren Missouri’s nuclear and coal-fired energy centers, or in the absence of insurance, the ability to timely recover uninsured losses from our customers;
•the impact of cyberattacks on us or our suppliers, which could, among other things, result in the loss of operational control of energy centers and electric and natural gas transmission and distribution systems and/or the loss of data, such as customer, employee, financial, and operating system information;
•business and economic conditions, which have been affected by, and will be affected by the length and severity of, the COVID-19 pandemic, including the impact of such conditions on interest rates;rates and inflation;
•disruptions of the capital markets, deterioration in credit metrics of the Ameren Companies, or other events that may have an adverse effect on the cost or availability of capital, including short-term credit and liquidity;
•the actions of credit rating agencies and the effects of such actions, including any impacts on our credit ratings that may result from the economic conditions of the COVID-19 pandemic;
•the inability of our counterparties to meet their obligations with respect to contracts, credit agreements, and financial instruments, including as it relatesthey relate to the construction and acquisition of electric and natural gas utility infrastructure and the ability of counterparties to complete projects, which is dependent upon the availability of necessary materials and equipment, including those obligations that are affected by the disruptions in the global supply chain caused by the COVID-19 pandemic;
•the impact of weather conditions and other natural phenomena on us and our customers, including the impact of system outages and the level of wind and solar resources;
•the construction, installation, performance, and cost recovery of generation, transmission, and distribution assets;
•the effects of failures of electric generation, electric and natural gas transmission or distribution, or natural gas storage facilities systems and equipment, which could result in unanticipated liabilities or unplanned outages;
•the operation of Ameren Missouri’s Callaway Energy Center, including planned and unplanned outages, such as the current outage that began in December 2020 related to its generator, andwell as the ability to recover costs associated with such outages and the impact of such outages on off-system sales and purchased power, among other things;
•Ameren Missouri’s ability to recover the remaining investment and decommissioning costs associated with the retirement of an energy center, as well as the ability to earn a return on that remaining investment and those decommissioning costs;
•the impact of current environmental laws and new, more stringent, or changing requirements, including those related to NSR and CO2, other emissions and discharges, Illinois emission standards, cooling water intake structures, CCR, and energy efficiency, and wildlife protection, that could limit or terminate the operation of certain of Ameren Missouri’s energy centers, increase our operating costs or investment requirements, result in an impairment of our assets, cause us to sell our assets, reduce our customers’ demand for electricity or natural gas, or otherwise have a negative financial effect;
•the impact of complying with renewable energy standards in Missouri and Illinois and with the zero emission standard in Illinois;
•Ameren Missouri’s ability to construct and/or acquire wind, solar, and other renewable energy generation facilities, retire energy centers, and implement new or existing customer energy-efficiency programs, including any such construction, acquisition, retirement, or implementation in connection with its Smart Energy Plan, the 2020 IRP,integrated resource plan, or our emissions reduction goals, and to recover its cost of investment, related return, and, in the case of customer energy-efficiency programs, any lost margins in a timely manner, which is affected by the ability to obtain all necessary regulatory and project approvals, including certificates of convenience and necessity from the MoPSC or any other required approvals for the addition of renewable resources;
•the availability of federal production and investment tax credits related to renewable energy and Ameren Missouri’s ability to use such credits; the cost of wind, solar, and other renewable generation and storage technologies; and our ability to obtain timely interconnection agreements with the MISO or other RTOs at an acceptable cost for each facility;
•advancements in carbon-free generation and storage technologies, and the impact of constructive federal and state energy and economic policies with respect to those technologies;
•labor disputes, work force reductions, changes in future wage and employee benefits costs, including those resulting from changes in discount rates, mortality tables, returns on benefit plan assets, and other assumptions;
•the impact of negative opinions of us or our utility services that our customers, investors, legislators, regulators, or regulatorsother stakeholders may have or develop, which could result from a variety of factors, including failures in system reliability, failure to implement our
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investment plans or to protect sensitive customer information, increases in rates, negative media coverage, or concerns about environmental, social, and/or governanceESG practices;
•the impact of adopting new accounting guidance;
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•the effects of strategic initiatives, including mergers, acquisitions, and divestitures;
•legal and administrative proceedings;
•the impacts of the Russian invasion of Ukraine, related sanctions imposed by the U.S. and other governments, and any broadening of the conflict, including potential impacts on the cost and availability of fuel, natural gas, enriched uranium, or other commodities, materials, or services, the inability of our counterparties to perform their obligations, disruptions in the capital and credit markets, and other impacts on business, economic, and geopolitical conditions, including inflation; and
•acts of sabotage, war, terrorism, or other intentionally disruptive acts.
New factors emerge from time to time, and it is not possible for management to predict all of such factors, nor can it assess the impact of each such factor on the business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained or implied in any forward-looking statement. Given these uncertainties, undue reliance should not be placed on these forward-looking statements. Except to the extent required by the federal securities laws, we undertake no obligation to update or revise publicly any forward-looking statements to reflect new information or future events.
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PART I. FINANCIAL INFORMATION
ITEM 1. FINANCIAL STATEMENTS.

AMEREN CORPORATION
CONSOLIDATED STATEMENT OF INCOME AND COMPREHENSIVE INCOME
(Unaudited) (In millions, except per share amounts)
Three Months Ended March 31, Three Months Ended March 31,
20212020 20222021
Operating Revenues:Operating Revenues:Operating Revenues:
ElectricElectric$1,156 $1,120 Electric$1,318 $1,156 
Natural gasNatural gas410 320 Natural gas561 410 
Total operating revenuesTotal operating revenues1,566 1,440 Total operating revenues1,879 1,566 
Operating Expenses:Operating Expenses:Operating Expenses:
FuelFuel65 140 Fuel176 65 
Purchased powerPurchased power191 134 Purchased power177 191 
Natural gas purchased for resaleNatural gas purchased for resale165 107 Natural gas purchased for resale293 165 
Other operations and maintenanceOther operations and maintenance420 438 Other operations and maintenance461 420 
Depreciation and amortizationDepreciation and amortization281 255 Depreciation and amortization299 281 
Taxes other than income taxesTaxes other than income taxes128 125 Taxes other than income taxes142 128 
Total operating expensesTotal operating expenses1,250 1,199 Total operating expenses1,548 1,250 
Operating IncomeOperating Income316 241 Operating Income331 316 
Other Income, NetOther Income, Net46 21 Other Income, Net60 46 
Interest ChargesInterest Charges100 93 Interest Charges104 100 
Income Before Income TaxesIncome Before Income Taxes262 169 Income Before Income Taxes287 262 
Income TaxesIncome Taxes27 21 Income Taxes34 27 
Net IncomeNet Income235 148 Net Income253 235 
Less: Net Income Attributable to Noncontrolling InterestsLess: Net Income Attributable to Noncontrolling Interests2 2 Less: Net Income Attributable to Noncontrolling Interests1 2 
Net Income Attributable to Ameren Common ShareholdersNet Income Attributable to Ameren Common Shareholders$233 $146 Net Income Attributable to Ameren Common Shareholders$252 $233 
Net IncomeNet Income$235 $148 Net Income$253 $235 
Other Comprehensive Income, Net of TaxesOther Comprehensive Income, Net of TaxesOther Comprehensive Income, Net of Taxes
Pension and other postretirement benefit plan activity, net of income taxes of $0 and $0, respectively1 1 
Pension and other postretirement benefit plan activity, net of income taxes of $— and $—, respectivelyPension and other postretirement benefit plan activity, net of income taxes of $— and $—, respectively1 1 
Comprehensive IncomeComprehensive Income236 149 Comprehensive Income254 236 
Less: Comprehensive Income Attributable to Noncontrolling InterestsLess: Comprehensive Income Attributable to Noncontrolling Interests2 2 Less: Comprehensive Income Attributable to Noncontrolling Interests1 2 
Comprehensive Income Attributable to Ameren Common ShareholdersComprehensive Income Attributable to Ameren Common Shareholders$234 $147 Comprehensive Income Attributable to Ameren Common Shareholders$253 $234 
Earnings per Common Share – BasicEarnings per Common Share – Basic$0.92 $0.59 Earnings per Common Share – Basic$0.98 $0.92 
Earnings per Common Share – DilutedEarnings per Common Share – Diluted$0.91 $0.59 Earnings per Common Share – Diluted$0.97 $0.91 
Weighted-average Common Shares Outstanding – BasicWeighted-average Common Shares Outstanding – Basic254.4 246.4 Weighted-average Common Shares Outstanding – Basic257.9 254.4 
Weighted-average Common Shares Outstanding – DilutedWeighted-average Common Shares Outstanding – Diluted255.9 248.1 Weighted-average Common Shares Outstanding – Diluted259.0 255.9 
The accompanying notes are an integral part of these consolidated financial statements.
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AMEREN CORPORATION
CONSOLIDATED BALANCE SHEET
(Unaudited) (In millions, except per share amounts)
March 31, 2021December 31, 2020March 31, 2022December 31, 2021
ASSETSASSETSASSETS
Current Assets:Current Assets:Current Assets:
Cash and cash equivalentsCash and cash equivalents$6 $139 Cash and cash equivalents$7 $8 
Accounts receivable – trade (less allowance for doubtful accounts of $47 and $50, respectively)464 415 
Accounts receivable – trade (less allowance for doubtful accounts of $28 and $29, respectively)Accounts receivable – trade (less allowance for doubtful accounts of $28 and $29, respectively)560 434 
Unbilled revenueUnbilled revenue210 269 Unbilled revenue283 301 
Miscellaneous accounts receivableMiscellaneous accounts receivable61 65 Miscellaneous accounts receivable87 85 
InventoriesInventories467 521 Inventories520 592 
Mark-to-market derivative assetsMark-to-market derivative assets137 66 
Restricted cash134 17 
Current regulatory assetsCurrent regulatory assets367 109 Current regulatory assets244 319 
Current collateral assetsCurrent collateral assets110 66 
Other current assetsOther current assets114 118 Other current assets83 97 
Total current assetsTotal current assets1,823 1,653 Total current assets2,031 1,968 
Property, Plant, and Equipment, NetProperty, Plant, and Equipment, Net27,307 26,807 Property, Plant, and Equipment, Net29,578 29,261 
Investments and Other Assets:Investments and Other Assets:Investments and Other Assets:
Nuclear decommissioning trust fundNuclear decommissioning trust fund1,010 982 Nuclear decommissioning trust fund1,094 1,159 
GoodwillGoodwill411 411 Goodwill411 411 
Regulatory assetsRegulatory assets1,249 1,100 Regulatory assets1,377 1,289 
Pension and other postretirement benefitsPension and other postretirement benefits772 756 
Other assetsOther assets989 1,077 Other assets934 891 
Total investments and other assetsTotal investments and other assets3,659 3,570 Total investments and other assets4,588 4,506 
TOTAL ASSETSTOTAL ASSETS$32,789 $32,030 TOTAL ASSETS$36,197 $35,735 
LIABILITIES AND EQUITYLIABILITIES AND EQUITYLIABILITIES AND EQUITY
Current Liabilities:Current Liabilities:Current Liabilities:
Current maturities of long-term debtCurrent maturities of long-term debt$8 $8 Current maturities of long-term debt$505 $505 
Short-term debtShort-term debt889 490 Short-term debt1,101 545 
Accounts and wages payableAccounts and wages payable581 958 Accounts and wages payable690 1,095 
Taxes accrued128 82 
Interest accrued84 114 
Current regulatory liabilitiesCurrent regulatory liabilities225 121 Current regulatory liabilities219 113 
Other current liabilitiesOther current liabilities392 407 Other current liabilities630 568 
Total current liabilitiesTotal current liabilities2,307 2,180 Total current liabilities3,145 2,826 
Long-term Debt, NetLong-term Debt, Net11,527 11,078 Long-term Debt, Net12,563 12,562 
Deferred Credits and Other Liabilities:Deferred Credits and Other Liabilities:Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, netAccumulated deferred income taxes and tax credits, net3,253 3,211 Accumulated deferred income taxes and tax credits, net3,550 3,499 
Regulatory liabilitiesRegulatory liabilities5,230 5,282 Regulatory liabilities5,841 5,848 
Asset retirement obligationsAsset retirement obligations705 696 Asset retirement obligations769 757 
Pension and other postretirement benefits38 37 
Other deferred credits and liabilitiesOther deferred credits and liabilities452 466 Other deferred credits and liabilities394 414 
Total deferred credits and other liabilitiesTotal deferred credits and other liabilities9,678 9,692 Total deferred credits and other liabilities10,554 10,518 
Commitments and Contingencies (Notes 2, 9, and 10)Commitments and Contingencies (Notes 2, 9, and 10)00Commitments and Contingencies (Notes 2, 9, and 10)00
Ameren Corporation Shareholders’ Equity:
Common stock, $.01 par value, 400.0 shares authorized – shares outstanding of 255.5 and 253.3, respectively3 3 
Shareholders’ Equity:Shareholders’ Equity:
Common stock, $.01 par value, 400.0 shares authorized – shares outstanding of 258.2 and 257.7, respectivelyCommon stock, $.01 par value, 400.0 shares authorized – shares outstanding of 258.2 and 257.7, respectively3 3 
Other paid-in capital, principally premium on common stockOther paid-in capital, principally premium on common stock6,295 6,179 Other paid-in capital, principally premium on common stock6,507 6,502 
Retained earningsRetained earnings2,850 2,757 Retained earnings3,282 3,182 
Accumulated other comprehensive loss0 (1)
Accumulated other comprehensive incomeAccumulated other comprehensive income14 13 
Total Ameren Corporation shareholders’ equity9,148 8,938 
Total shareholders’ equityTotal shareholders’ equity9,806 9,700 
Noncontrolling InterestsNoncontrolling Interests129 142 Noncontrolling Interests129 129 
Total equityTotal equity9,277 9,080 Total equity9,935 9,829 
TOTAL LIABILITIES AND EQUITYTOTAL LIABILITIES AND EQUITY$32,789 $32,030 TOTAL LIABILITIES AND EQUITY$36,197 $35,735 
The accompanying notes are an integral part of these consolidated financial statements.
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AMEREN CORPORATIONAMEREN CORPORATIONAMEREN CORPORATION
CONSOLIDATED STATEMENT OF CASH FLOWSCONSOLIDATED STATEMENT OF CASH FLOWSCONSOLIDATED STATEMENT OF CASH FLOWS
(Unaudited) (In millions)(Unaudited) (In millions)(Unaudited) (In millions)
Three Months Ended March 31, Three Months Ended March 31,
20212020 20222021
Cash Flows From Operating Activities:Cash Flows From Operating Activities:Cash Flows From Operating Activities:
Net incomeNet income$235 $148 Net income$253 $235 
Adjustments to reconcile net income to net cash provided by operating activities:Adjustments to reconcile net income to net cash provided by operating activities:Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortizationDepreciation and amortization295 263 Depreciation and amortization324 295 
Amortization of nuclear fuelAmortization of nuclear fuel0 23 Amortization of nuclear fuel22 — 
Amortization of debt issuance costs and premium/discountsAmortization of debt issuance costs and premium/discounts5 5 Amortization of debt issuance costs and premium/discounts4 5 
Deferred income taxes and investment tax credits, netDeferred income taxes and investment tax credits, net26 23 Deferred income taxes and investment tax credits, net31 26 
Allowance for equity funds used during constructionAllowance for equity funds used during construction(7)(4)Allowance for equity funds used during construction(8)(7)
Stock-based compensation costsStock-based compensation costs6 6 Stock-based compensation costs4 6 
OtherOther8 17 Other11 8 
Changes in assets and liabilities:Changes in assets and liabilities:Changes in assets and liabilities:
ReceivablesReceivables(5)(5)Receivables(117)(5)
InventoriesInventories54 23 Inventories72 54 
Accounts and wages payableAccounts and wages payable(252)(221)Accounts and wages payable(235)(252)
Taxes accruedTaxes accrued60 47 Taxes accrued47 60 
Regulatory assets and liabilitiesRegulatory assets and liabilities(421)(14)Regulatory assets and liabilities75 (421)
Assets, otherAssets, other(9)(3)Assets, other(54)(9)
Liabilities, otherLiabilities, other(34)(18)Liabilities, other(26)(34)
Pension and other postretirement benefitsPension and other postretirement benefits4 0 Pension and other postretirement benefits(15)4 
Net cash provided by (used in) operating activitiesNet cash provided by (used in) operating activities(35)290 Net cash provided by (used in) operating activities388 (35)
Cash Flows From Investing Activities:Cash Flows From Investing Activities:Cash Flows From Investing Activities:
Capital expendituresCapital expenditures(694)(636)Capital expenditures(774)(887)
Wind generation expenditures(193)0 
Nuclear fuel expendituresNuclear fuel expenditures(1)(35)Nuclear fuel expenditures(16)(1)
Purchases of securities – nuclear decommissioning trust fundPurchases of securities – nuclear decommissioning trust fund(152)(96)Purchases of securities – nuclear decommissioning trust fund(97)(152)
Sales and maturities of securities – nuclear decommissioning trust fundSales and maturities of securities – nuclear decommissioning trust fund150 81 Sales and maturities of securities – nuclear decommissioning trust fund92 150 
OtherOther1 2 Other15 1 
Net cash used in investing activitiesNet cash used in investing activities(889)(684)Net cash used in investing activities(780)(889)
Cash Flows From Financing Activities:Cash Flows From Financing Activities:Cash Flows From Financing Activities:
Dividends on common stockDividends on common stock(140)(122)Dividends on common stock(152)(140)
Dividends paid to noncontrolling interest holdersDividends paid to noncontrolling interest holders(2)(2)Dividends paid to noncontrolling interest holders(1)(2)
Short-term debt, netShort-term debt, net399 175 Short-term debt, net555 399 
Maturities of long-term debt0 (85)
Issuances of long-term debtIssuances of long-term debt450 465 Issuances of long-term debt— 450 
Issuances of common stockIssuances of common stock125 13 Issuances of common stock5 125 
Redemptions of Ameren Illinois preferred stockRedemptions of Ameren Illinois preferred stock(13)0 Redemptions of Ameren Illinois preferred stock— (13)
Employee payroll taxes related to stock-based compensationEmployee payroll taxes related to stock-based compensation(17)(20)Employee payroll taxes related to stock-based compensation(16)(17)
Debt issuance costsDebt issuance costs(3)(3)Debt issuance costs— (3)
OtherOther(4)0 Other— (4)
Net cash provided by financing activitiesNet cash provided by financing activities795 421 Net cash provided by financing activities391 795 
Net change in cash, cash equivalents, and restricted cashNet change in cash, cash equivalents, and restricted cash(129)27 Net change in cash, cash equivalents, and restricted cash(1)(129)
Cash, cash equivalents, and restricted cash at beginning of yearCash, cash equivalents, and restricted cash at beginning of year301 176 Cash, cash equivalents, and restricted cash at beginning of year155 301 
Cash, cash equivalents, and restricted cash at end of periodCash, cash equivalents, and restricted cash at end of period$172 $203 Cash, cash equivalents, and restricted cash at end of period$154 $172 
The accompanying notes are an integral part of these consolidated financial statements.
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AMEREN CORPORATION
CONSOLIDATED STATEMENT OF SHAREHOLDERS’ EQUITY
(Unaudited) (In millions, except per share amounts)
Three Months Ended March 31, Three Months Ended March 31,
20212020 20222021
Common StockCommon Stock$3 $2 Common Stock$3 $3 
Other Paid-in Capital:Other Paid-in Capital:Other Paid-in Capital:
Beginning of yearBeginning of year6,179 5,694 Beginning of year6,502 6,179 
Settlement of forward sale agreement through common shares issuanceSettlement of forward sale agreement through common shares issuance113 0 Settlement of forward sale agreement through common shares issuance— 113 
Shares issued under the DRPlus and 401(k) planShares issued under the DRPlus and 401(k) plan12 13 Shares issued under the DRPlus and 401(k) plan13 12 
Stock-based compensation activityStock-based compensation activity(9)(12)Stock-based compensation activity(8)(9)
Other paid-in capital, end of periodOther paid-in capital, end of period6,295 5,695 Other paid-in capital, end of period6,507 6,295 
Retained Earnings:Retained Earnings:Retained Earnings:
Beginning of yearBeginning of year2,757 2,380 Beginning of year3,182 2,757 
Net income attributable to Ameren common shareholdersNet income attributable to Ameren common shareholders233 146 Net income attributable to Ameren common shareholders252 233 
Dividends on common stockDividends on common stock(140)(122)Dividends on common stock(152)(140)
Retained earnings, end of periodRetained earnings, end of period2,850 2,404 Retained earnings, end of period3,282 2,850 
Accumulated Other Comprehensive Income (Loss):
Accumulated Other Comprehensive Income:Accumulated Other Comprehensive Income:
Deferred retirement benefit costs, beginning of yearDeferred retirement benefit costs, beginning of year(1)(17)Deferred retirement benefit costs, beginning of year13 (1)
Change in deferred retirement benefit costsChange in deferred retirement benefit costs1 1 Change in deferred retirement benefit costs1 1 
Deferred retirement benefit costs, end of periodDeferred retirement benefit costs, end of period0 (16)Deferred retirement benefit costs, end of period14 — 
Total accumulated other comprehensive loss, end of period0 (16)
Total Ameren Corporation Shareholders’ Equity$9,148 $8,085 
Total accumulated other comprehensive income, end of periodTotal accumulated other comprehensive income, end of period14 — 
Total Shareholders’ EquityTotal Shareholders’ Equity$9,806 $9,148 
Noncontrolling Interests:Noncontrolling Interests:Noncontrolling Interests:
Beginning of yearBeginning of year142 142 Beginning of year129 142 
Net income attributable to noncontrolling interest holdersNet income attributable to noncontrolling interest holders2 2 Net income attributable to noncontrolling interest holders1 2 
Dividends paid to noncontrolling interest holdersDividends paid to noncontrolling interest holders(2)(2)Dividends paid to noncontrolling interest holders(1)(2)
Redemptions of Ameren Illinois preferred stockRedemptions of Ameren Illinois preferred stock(13)0 Redemptions of Ameren Illinois preferred stock— (13)
Noncontrolling interests, end of periodNoncontrolling interests, end of period129 142 Noncontrolling interests, end of period129 129 
Total EquityTotal Equity$9,277 $8,227 Total Equity$9,935 $9,277 
Common stock shares outstanding at beginning of yearCommon stock shares outstanding at beginning of year253.3 246.2 Common stock shares outstanding at beginning of year257.7 253.3 
Shares issued under forward sale agreementShares issued under forward sale agreement1.6 0 Shares issued under forward sale agreement— 1.6 
Shares issued under the DRPlus and 401(k) planShares issued under the DRPlus and 401(k) plan0.1 0.2 Shares issued under the DRPlus and 401(k) plan0.1 0.1 
Shares issued for stock-based compensationShares issued for stock-based compensation0.5 0.5 Shares issued for stock-based compensation0.4 0.5 
Common stock shares outstanding at end of periodCommon stock shares outstanding at end of period255.5 246.9 Common stock shares outstanding at end of period258.2 255.5 
Dividends per common shareDividends per common share$0.550 $0.495 Dividends per common share$0.59 $0.55 
The accompanying notes are an integral part of these consolidated financial statements.
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UNION ELECTRIC COMPANY (d/b/a AMEREN MISSOURI)
CONSOLIDATED STATEMENT OF INCOME (LOSS)
(Unaudited) (In millions)
Three Months Ended March 31, Three Months Ended March 31,
20212020 20222021
Operating Revenues:Operating Revenues:Operating Revenues:
ElectricElectric$641 $631 Electric$738 $641 
Natural gasNatural gas63 49 Natural gas80 63 
Total operating revenuesTotal operating revenues704 680 Total operating revenues818 704 
Operating Expenses:Operating Expenses:Operating Expenses:
FuelFuel65 140 Fuel176 65 
Purchased powerPurchased power88 39 Purchased power50 88 
Natural gas purchased for resaleNatural gas purchased for resale31 18 Natural gas purchased for resale46 31 
Other operations and maintenanceOther operations and maintenance225 239 Other operations and maintenance232 225 
Depreciation and amortizationDepreciation and amortization156 139 Depreciation and amortization164 156 
Taxes other than income taxesTaxes other than income taxes77 79 Taxes other than income taxes85 77 
Total operating expensesTotal operating expenses642 654 Total operating expenses753 642 
Operating IncomeOperating Income62 26 Operating Income65 62 
Other Income, NetOther Income, Net23 4 Other Income, Net23 23 
Interest ChargesInterest Charges39 40 Interest Charges39 39 
Income (Loss) Before Income Taxes46 (10)
Income Tax Benefit(2)(1)
Net Income (Loss)48 (9)
Income Before Income TaxesIncome Before Income Taxes49 46 
Income Taxes (Benefit)Income Taxes (Benefit)(2)(2)
Net IncomeNet Income51 48 
Preferred Stock DividendsPreferred Stock Dividends1 1 Preferred Stock Dividends1 1 
Net Income (Loss) Available to Common Shareholder$47 $(10)
Net Income Available to Common ShareholderNet Income Available to Common Shareholder$50 $47 
The accompanying notes as they relate to Ameren Missouri are an integral part of these consolidated financial statements.
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UNION ELECTRIC COMPANY (d/b/a AMEREN MISSOURI)
CONSOLIDATED BALANCE SHEET
(Unaudited) (In millions, except per share amounts)
March 31, 2021December 31, 2020March 31, 2022December 31, 2021
ASSETSASSETSASSETS
Current Assets:Current Assets:Current Assets:
Cash and cash equivalentsCash and cash equivalents$1 $136 Cash and cash equivalents$1 $— 
Advances to money pool0 139 
Accounts receivable – trade (less allowance for doubtful accounts of $15 and $16, respectively)156 166 
Accounts receivable – trade (less allowance for doubtful accounts of $11 and $13, respectively)Accounts receivable – trade (less allowance for doubtful accounts of $11 and $13, respectively)190 190 
Accounts receivable – affiliatesAccounts receivable – affiliates69 57 Accounts receivable – affiliates47 44 
Unbilled revenueUnbilled revenue109 133 Unbilled revenue134 142 
Miscellaneous accounts receivableMiscellaneous accounts receivable43 36 Miscellaneous accounts receivable57 71 
InventoriesInventories362 386 Inventories414 419 
Current regulatory assetsCurrent regulatory assets141 60 Current regulatory assets141 127 
Current collateral assetsCurrent collateral assets110 66 
Other current assetsOther current assets70 79 Other current assets86 76 
Total current assetsTotal current assets951 1,192 Total current assets1,180 1,135 
Property, Plant, and Equipment, NetProperty, Plant, and Equipment, Net14,221 13,879 Property, Plant, and Equipment, Net15,434 15,296 
Investments and Other Assets:Investments and Other Assets:Investments and Other Assets:
Nuclear decommissioning trust fundNuclear decommissioning trust fund1,010 982 Nuclear decommissioning trust fund1,094 1,159 
Regulatory assetsRegulatory assets413 347 Regulatory assets582 523 
Pension and other postretirement benefitsPension and other postretirement benefits212 208 
Other assetsOther assets375 383 Other assets418 401 
Total investments and other assetsTotal investments and other assets1,798 1,712 Total investments and other assets2,306 2,291 
TOTAL ASSETSTOTAL ASSETS$16,970 $16,783 TOTAL ASSETS$18,920 $18,722 
LIABILITIES AND SHAREHOLDERS’ EQUITYLIABILITIES AND SHAREHOLDERS’ EQUITYLIABILITIES AND SHAREHOLDERS’ EQUITY
Current Liabilities:Current Liabilities:Current Liabilities:
Current maturities of long-term debtCurrent maturities of long-term debt$8 $8 Current maturities of long-term debt$55 $55 
Short-term debtShort-term debt204 0 Short-term debt528 165 
Accounts and wages payableAccounts and wages payable267 501 Accounts and wages payable342 631 
Accounts payable – affiliatesAccounts payable – affiliates40 46 Accounts payable – affiliates36 46 
Taxes accruedTaxes accrued85 42 Taxes accrued80 34 
Interest accrued46 53 
Current asset retirement obligations59 60 
Mark-to-market derivative liabilitiesMark-to-market derivative liabilities109 53 
Current regulatory liabilitiesCurrent regulatory liabilities101 58 
Other current liabilitiesOther current liabilities116 123 Other current liabilities159 175 
Total current liabilitiesTotal current liabilities825 833 Total current liabilities1,410 1,217 
Long-term Debt, NetLong-term Debt, Net5,096 5,096 Long-term Debt, Net5,564 5,564 
Deferred Credits and Other Liabilities:Deferred Credits and Other Liabilities:Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, netAccumulated deferred income taxes and tax credits, net1,756 1,742 Accumulated deferred income taxes and tax credits, net1,866 1,852 
Regulatory liabilitiesRegulatory liabilities3,130 3,110 Regulatory liabilities3,278 3,354 
Asset retirement obligationsAsset retirement obligations700 691 Asset retirement obligations765 753 
Pension and other postretirement benefits34 35 
Other deferred credits and liabilitiesOther deferred credits and liabilities59 66 Other deferred credits and liabilities76 71 
Total deferred credits and other liabilitiesTotal deferred credits and other liabilities5,679 5,644 Total deferred credits and other liabilities5,985 6,030 
Commitments and Contingencies (Notes 2, 8, 9, and 10)Commitments and Contingencies (Notes 2, 8, 9, and 10)00Commitments and Contingencies (Notes 2, 8, 9, and 10)00
Shareholders’ Equity:Shareholders’ Equity:Shareholders’ Equity:
Common stock, $5 par value, 150.0 shares authorized – 102.1 shares outstandingCommon stock, $5 par value, 150.0 shares authorized – 102.1 shares outstanding511 511 Common stock, $5 par value, 150.0 shares authorized – 102.1 shares outstanding511 511 
Other paid-in capital, principally premium on common stockOther paid-in capital, principally premium on common stock2,631 2,518 Other paid-in capital, principally premium on common stock2,725 2,725 
Preferred stockPreferred stock80 80 Preferred stock80 80 
Retained earningsRetained earnings2,148 2,101 Retained earnings2,645 2,595 
Total shareholders’ equityTotal shareholders’ equity5,370 5,210 Total shareholders’ equity5,961 5,911 
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITYTOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY$16,970 $16,783 TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY$18,920 $18,722 
The accompanying notes as they relate to Ameren Missouri are an integral part of these consolidated financial statements.
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UNION ELECTRIC COMPANY (d/b/a AMEREN MISSOURI)
CONSOLIDATED STATEMENT OF CASH FLOWS
(Unaudited) (In millions)
Three Months Ended March 31,Three Months Ended March 31,
2021202020222021
Cash Flows From Operating Activities:Cash Flows From Operating Activities:Cash Flows From Operating Activities:
Net income (loss)$48 $(9)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Net incomeNet income$51 $48 
Adjustments to reconcile net income to net cash provided by operating activities:Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortizationDepreciation and amortization171 148 Depreciation and amortization189 171 
Amortization of nuclear fuelAmortization of nuclear fuel0 23 Amortization of nuclear fuel22 — 
Amortization of debt issuance costs and premium/discountsAmortization of debt issuance costs and premium/discounts1 2 Amortization of debt issuance costs and premium/discounts1 1 
Deferred income taxes and investment tax credits, netDeferred income taxes and investment tax credits, net4 (5)Deferred income taxes and investment tax credits, net4 4 
Allowance for equity funds used during constructionAllowance for equity funds used during construction(4)(2)Allowance for equity funds used during construction(4)(4)
OtherOther3 2 Other— 3 
Changes in assets and liabilities:Changes in assets and liabilities:Changes in assets and liabilities:
ReceivablesReceivables20 (3)Receivables7 20 
InventoriesInventories24 (18)Inventories5 24 
Accounts and wages payableAccounts and wages payable(201)(172)Accounts and wages payable(201)(201)
Taxes accruedTaxes accrued39 55 Taxes accrued41 39 
Regulatory assets and liabilitiesRegulatory assets and liabilities(164)16 Regulatory assets and liabilities(3)(164)
Assets, otherAssets, other13 2 Assets, other(34)13 
Liabilities, otherLiabilities, other(9)0 Liabilities, other(18)(9)
Pension and other postretirement benefitsPension and other postretirement benefits4 2 Pension and other postretirement benefits(4)4 
Net cash provided by (used in) operating activitiesNet cash provided by (used in) operating activities(51)41 Net cash provided by (used in) operating activities56 (51)
Cash Flows From Investing Activities:Cash Flows From Investing Activities:Cash Flows From Investing Activities:
Capital expendituresCapital expenditures(341)(278)Capital expenditures(414)(534)
Wind generation expenditures(193)0 
Nuclear fuel expendituresNuclear fuel expenditures(1)(35)Nuclear fuel expenditures(16)(1)
Purchases of securities – nuclear decommissioning trust fundPurchases of securities – nuclear decommissioning trust fund(152)(96)Purchases of securities – nuclear decommissioning trust fund(97)(152)
Sales and maturities of securities – nuclear decommissioning trust fundSales and maturities of securities – nuclear decommissioning trust fund150 81 Sales and maturities of securities – nuclear decommissioning trust fund92 150 
Money pool advances, netMoney pool advances, net139 0 Money pool advances, net— 139 
OtherOther18 — 
Net cash used in investing activitiesNet cash used in investing activities(398)(328)Net cash used in investing activities(417)(398)
Cash Flows From Financing Activities:Cash Flows From Financing Activities:Cash Flows From Financing Activities:
Dividends on preferred stockDividends on preferred stock(1)(1)Dividends on preferred stock(1)(1)
Short-term debt, netShort-term debt, net204 (104)Short-term debt, net363 204 
Maturities of long-term debt0 (85)
Issuances of long-term debt0 465 
Capital contribution from parentCapital contribution from parent113 0 Capital contribution from parent— 113 
Debt issuance costs0 (3)
Net cash provided by financing activitiesNet cash provided by financing activities316 272 Net cash provided by financing activities362 316 
Net change in cash, cash equivalents, and restricted cashNet change in cash, cash equivalents, and restricted cash(133)(15)Net change in cash, cash equivalents, and restricted cash1 (133)
Cash, cash equivalents, and restricted cash at beginning of yearCash, cash equivalents, and restricted cash at beginning of year145 39 Cash, cash equivalents, and restricted cash at beginning of year8 145 
Cash, cash equivalents, and restricted cash at end of periodCash, cash equivalents, and restricted cash at end of period$12 $24 Cash, cash equivalents, and restricted cash at end of period$9 $12 
The accompanying notes as they relate to Ameren Missouri are an integral part of these consolidated financial statements.
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UNION ELECTRIC COMPANY (d/b/a AMEREN MISSOURI)
CONSOLIDATED STATEMENT OF SHAREHOLDERS’ EQUITY
(Unaudited) (In millions)
Three Months Ended March 31, Three Months Ended March 31,
20212020 20222021
Common StockCommon Stock$511 $511 Common Stock$511 $511 
Other Paid-in Capital:Other Paid-in Capital:Other Paid-in Capital:
Beginning of yearBeginning of year2,518 2,027 Beginning of year2,725 2,518 
Capital contribution from parent113 0 
Capital contributions from parentCapital contributions from parent— 113 
Other paid-in capital, end of periodOther paid-in capital, end of period2,631 2,027 Other paid-in capital, end of period2,725 2,631 
Preferred StockPreferred Stock80 80 Preferred Stock80 80 
Retained Earnings:Retained Earnings:Retained Earnings:
Beginning of yearBeginning of year2,101 1,731 Beginning of year2,595 2,101 
Net income (loss)48 (9)
Net incomeNet income51 48 
Dividends on preferred stockDividends on preferred stock(1)(1)Dividends on preferred stock(1)(1)
Retained earnings, end of periodRetained earnings, end of period2,148 1,721 Retained earnings, end of period2,645 2,148 
Total Shareholders’ EquityTotal Shareholders’ Equity$5,370 $4,339 Total Shareholders’ Equity$5,961 $5,370 
The accompanying notes as they relate to Ameren Missouri are an integral part of these consolidated financial statements.
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AMEREN ILLINOIS COMPANY (d/b/a AMEREN ILLINOIS)
STATEMENT OF INCOME
(Unaudited) (In millions)
Three Months Ended March 31, Three Months Ended March 31,
20212020 20222021
Operating Revenues:Operating Revenues:Operating Revenues:
ElectricElectric$476 $452 Electric$543 $476 
Natural gasNatural gas347 271 Natural gas481 347 
Total operating revenuesTotal operating revenues823 723 Total operating revenues1,024 823 
Operating Expenses:Operating Expenses:Operating Expenses:
Purchased powerPurchased power106 98 Purchased power131 106 
Natural gas purchased for resaleNatural gas purchased for resale134 89 Natural gas purchased for resale247 134 
Other operations and maintenanceOther operations and maintenance194 199 Other operations and maintenance223 194 
Depreciation and amortizationDepreciation and amortization115 107 Depreciation and amortization124 115 
Taxes other than income taxesTaxes other than income taxes46 42 Taxes other than income taxes53 46 
Total operating expensesTotal operating expenses595 535 Total operating expenses778 595 
Operating IncomeOperating Income228 188 Operating Income246 228 
Other Income, NetOther Income, Net14 11 Other Income, Net24 14 
Interest ChargesInterest Charges42 39 Interest Charges42 42 
Income Before Income TaxesIncome Before Income Taxes200 160 Income Before Income Taxes228 200 
Income TaxesIncome Taxes50 39 Income Taxes59 50 
Net IncomeNet Income150 121 Net Income169 150 
Preferred Stock DividendsPreferred Stock Dividends1 1 Preferred Stock Dividends— 1 
Net Income Available to Common ShareholderNet Income Available to Common Shareholder$149 $120 Net Income Available to Common Shareholder$169 $149 
The accompanying notes as they relate to Ameren Illinois are an integral part of these financial statements.
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AMEREN ILLINOIS COMPANY (d/b/a AMEREN ILLINOIS)
BALANCE SHEET
(Unaudited) (In millions)
March 31, 2021December 31, 2020March 31, 2022December 31, 2021
ASSETSASSETSASSETS
Current Assets:Current Assets:Current Assets:
Cash and cash equivalentsCash and cash equivalents$0 $0 Cash and cash equivalents$— $— 
Accounts receivable – trade (less allowance for doubtful accounts of $32 and $34, respectively)293 234 
Accounts receivable – trade (less allowance for doubtful accounts of $17 and $16, respectively)Accounts receivable – trade (less allowance for doubtful accounts of $17 and $16, respectively)356 228 
Accounts receivable – affiliatesAccounts receivable – affiliates71 64 Accounts receivable – affiliates12 24 
Unbilled revenueUnbilled revenue101 136 Unbilled revenue149 159 
Miscellaneous accounts receivableMiscellaneous accounts receivable5 12 Miscellaneous accounts receivable12 1 
InventoriesInventories105 135 Inventories106 173 
Restricted cash125 6 
Mark-to-market derivative assetsMark-to-market derivative assets79 28 
Current regulatory assetsCurrent regulatory assets217 37 Current regulatory assets93 180 
Other current assetsOther current assets24 23 Other current assets26 30 
Total current assetsTotal current assets941 647 Total current assets833 823 
Property, Plant, and Equipment, NetProperty, Plant, and Equipment, Net11,358 11,201 Property, Plant, and Equipment, Net12,396 12,223 
Investments and Other Assets:Investments and Other Assets:Investments and Other Assets:
GoodwillGoodwill411 411 Goodwill411 411 
Regulatory assetsRegulatory assets820 742 Regulatory assets780 752 
Pension and other postretirement benefitsPension and other postretirement benefits435 427 
Other assetsOther assets442 534 Other assets436 399 
Total investments and other assetsTotal investments and other assets1,673 1,687 Total investments and other assets2,062 1,989 
TOTAL ASSETSTOTAL ASSETS$13,972 $13,535 TOTAL ASSETS$15,291 $15,035 
LIABILITIES AND SHAREHOLDERS' EQUITYLIABILITIES AND SHAREHOLDERS' EQUITYLIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities:Current Liabilities:Current Liabilities:
Current maturities of long-term debtCurrent maturities of long-term debt$400 $400 
Short-term debtShort-term debt107 103 
Short-term debt$323 $0 
Borrowings from money pool0 19 
Accounts and wages payableAccounts and wages payable255 363 Accounts and wages payable286 361 
Accounts payable – affiliatesAccounts payable – affiliates43 51 Accounts payable – affiliates80 64 
Customer deposits70 74 
Current regulatory liabilitiesCurrent regulatory liabilities200 88 Current regulatory liabilities118 54 
Other current liabilitiesOther current liabilities207 221 Other current liabilities251 251 
Total current liabilitiesTotal current liabilities1,098 816 Total current liabilities1,242 1,233 
Long-term Debt, NetLong-term Debt, Net3,947 3,946 Long-term Debt, Net3,993 3,992 
Deferred Credits and Other Liabilities:Deferred Credits and Other Liabilities:Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and investment tax credits, netAccumulated deferred income taxes and investment tax credits, net1,430 1,367 Accumulated deferred income taxes and investment tax credits, net1,593 1,558 
Regulatory liabilitiesRegulatory liabilities1,988 2,063 Regulatory liabilities2,442 2,374 
Pension and other postretirement benefits67 69 
Environmental remediation51 57 
Other deferred credits and liabilitiesOther deferred credits and liabilities249 251 Other deferred credits and liabilities212 238 
Total deferred credits and other liabilitiesTotal deferred credits and other liabilities3,785 3,807 Total deferred credits and other liabilities4,247 4,170 
Commitments and Contingencies (Notes 2, 8 and 9)00
Commitments and Contingencies (Notes 2, 8, and 9)Commitments and Contingencies (Notes 2, 8, and 9)00
Shareholders' Equity:Shareholders' Equity:Shareholders' Equity:
Common stock, 0 par value, 45.0 shares authorized – 25.5 shares outstanding0 0 
Common stock, no par value, 45.0 shares authorized – 25.5 shares outstandingCommon stock, no par value, 45.0 shares authorized – 25.5 shares outstanding— — 
Other paid-in capitalOther paid-in capital2,692 2,652 Other paid-in capital2,914 2,914 
Preferred stockPreferred stock49 62 Preferred stock49 49 
Retained earningsRetained earnings2,401 2,252 Retained earnings2,846 2,677 
Total shareholders' equityTotal shareholders' equity5,142 4,966 Total shareholders' equity5,809 5,640 
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITYTOTAL LIABILITIES AND SHAREHOLDERS' EQUITY$13,972 $13,535 TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY$15,291 $15,035 
The accompanying notes as they relate to Ameren Illinois are an integral part of these financial statements.
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AMEREN ILLINOIS COMPANY (d/b/a AMEREN ILLINOIS)
STATEMENT OF CASH FLOWS
(Unaudited) (In millions)
Three Months Ended March 31,Three Months Ended March 31,
2021202020222021
Cash Flows From Operating Activities:Cash Flows From Operating Activities:Cash Flows From Operating Activities:
Net incomeNet income$150 $121 Net income$169 $150 
Adjustments to reconcile net income to net cash provided by operating activities:Adjustments to reconcile net income to net cash provided by operating activities:Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortizationDepreciation and amortization115 106 Depreciation and amortization124 115 
Amortization of debt issuance costs and premium/discountsAmortization of debt issuance costs and premium/discounts3 2 Amortization of debt issuance costs and premium/discounts3 3 
Deferred income taxes and investment tax credits, netDeferred income taxes and investment tax credits, net53 22 Deferred income taxes and investment tax credits, net27 53 
Allowance for equity funds used during constructionAllowance for equity funds used during construction(4)(3)
OtherOther3 (2)Other2 6 
Changes in assets and liabilities:Changes in assets and liabilities:Changes in assets and liabilities:
ReceivablesReceivables(24)(6)Receivables(126)(24)
InventoriesInventories30 41 Inventories67 30 
Accounts and wages payableAccounts and wages payable(40)(20)Accounts and wages payable(18)(40)
Taxes accruedTaxes accrued3 16 Taxes accrued32 3 
Regulatory assets and liabilitiesRegulatory assets and liabilities(255)(28)Regulatory assets and liabilities79 (255)
Assets, otherAssets, other(15)(4)Assets, other(18)(15)
Liabilities, otherLiabilities, other(9)(14)Liabilities, other13 (9)
Pension and other postretirement benefitsPension and other postretirement benefits(1)(2)Pension and other postretirement benefits(8)(1)
Net cash provided by operating activitiesNet cash provided by operating activities13 232 Net cash provided by operating activities342 13 
Cash Flows From Investing Activities:Cash Flows From Investing Activities:Cash Flows From Investing Activities:
Capital expendituresCapital expenditures(337)(324)Capital expenditures(342)(337)
Other0 1 
Net cash used in investing activitiesNet cash used in investing activities(337)(323)Net cash used in investing activities(342)(337)
Cash Flows From Financing Activities:Cash Flows From Financing Activities:Cash Flows From Financing Activities:
Dividends on preferred stockDividends on preferred stock(1)(1)Dividends on preferred stock— (1)
Short-term debt, netShort-term debt, net323 7 Short-term debt, net4 323 
Money pool borrowings, netMoney pool borrowings, net(19)0 Money pool borrowings, net— (19)
Capital contributions from parentCapital contributions from parent40 100 Capital contributions from parent— 40 
Redemption of preferred stockRedemption of preferred stock(13)0 Redemption of preferred stock— (13)
OtherOther(4)0 Other— (4)
Net cash provided by financing activitiesNet cash provided by financing activities326 106 Net cash provided by financing activities4 326 
Net change in cash, cash equivalents, and restricted cashNet change in cash, cash equivalents, and restricted cash2 15 Net change in cash, cash equivalents, and restricted cash4 2 
Cash, cash equivalents and restricted cash at beginning of yearCash, cash equivalents and restricted cash at beginning of year147 125 Cash, cash equivalents and restricted cash at beginning of year133 147 
Cash, cash equivalents, and restricted cash at end of periodCash, cash equivalents, and restricted cash at end of period$149 $140 Cash, cash equivalents, and restricted cash at end of period$137 $149 
The accompanying notes as they relate to Ameren Illinois are an integral part of these financial statements.
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AMEREN ILLINOIS COMPANY (d/b/a AMEREN ILLINOIS)
STATEMENT OF SHAREHOLDERS’ EQUITY
(Unaudited) (In millions)
Three Months Ended March 31, Three Months Ended March 31,
20212020 20222021
Common StockCommon Stock$0 $0 Common Stock$— $— 
Other Paid-in Capital:Other Paid-in Capital:Other Paid-in Capital:
Beginning of yearBeginning of year2,652 2,188 Beginning of year2,914 2,652 
Capital contribution from parent40 100 
Capital contributions from parentCapital contributions from parent— 40 
Other paid-in capital, end of periodOther paid-in capital, end of period2,692 2,288 Other paid-in capital, end of period2,914 2,692 
Preferred Stock:Preferred Stock:Preferred Stock:
Beginning of yearBeginning of year62 62 Beginning of year49 62 
Redemptions of preferred stockRedemptions of preferred stock(13)0 Redemptions of preferred stock— (13)
Preferred stock, end of periodPreferred stock, end of period49 62 Preferred stock, end of period49 49 
Retained Earnings:Retained Earnings:Retained Earnings:
Beginning of yearBeginning of year2,252 1,882 Beginning of year2,677 2,252 
Net incomeNet income150 121 Net income169 150 
Dividends on preferred stockDividends on preferred stock(1)(1)Dividends on preferred stock— (1)
Retained earnings, end of periodRetained earnings, end of period2,401 2,002 Retained earnings, end of period2,846 2,401 
Total Shareholders’ EquityTotal Shareholders’ Equity$5,142 $4,352 Total Shareholders’ Equity$5,809 $5,142 
The accompanying notes as they relate to Ameren Illinois are an integral part of these financial statements.
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AMEREN CORPORATION (Consolidated)
UNION ELECTRIC COMPANY (d/b/a Ameren Missouri)
AMEREN ILLINOIS COMPANY (d/b/a Ameren Illinois)
COMBINED NOTES TO FINANCIAL STATEMENTS
(Unaudited)
March 31, 20212022
NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
General
Ameren, headquartered in St. Louis, Missouri, is a public utility holding company whose primary assets are its equity interests in its subsidiaries. Ameren’s subsidiaries are separate, independent legal entities with separate businesses, assets, and liabilities. Dividends on Ameren’s common stock and the payment of expenses by Ameren depend on distributions made to it by its subsidiaries. Ameren’s principal subsidiaries are listed below. Ameren has other subsidiaries that conduct other activities, such as providing shared services.
•Union Electric Company, doing business as Ameren Missouri, operates a rate-regulated electric generation, transmission, and distribution business and a rate-regulated natural gas distribution business in Missouri.
•Ameren Illinois Company, doing business as Ameren Illinois, operates rate-regulated electric transmission, electric distribution, and natural gas distribution businesses in Illinois.
•ATXI operates a FERC rate-regulated electric transmission business in the MISO.
The COVID-19 pandemic continues to affect our results of operations, financial position, and liquidity, but we expect a gradual improvement inliquidity. While our electric sales volumes, in 2021, compared to 2020. In the first three months of 2021, our sales volumes were comparable to the same period in 2020, excluding the estimated effects of weather and customer energy-efficiency programs. However, we experiencedprograms, were comparable to the same period in 2021, and total sales volume levels were comparable to pre-pandemic levels, there has been a shift in sales volumes by customer class, which began in 2020, with an increase in our accounts receivable balances that were past due or that were a part of a deferred payment arrangement,residential sales, and a declinedecrease in our cash collections from customers.The continued effect of the COVID-19 pandemic on our results of operations, financial position, and liquidity in subsequent periods will depend on its severity and longevity, future regulatory or legislative actions with respect thereto, and the resulting impact on business, economic, and capital market conditions.In general, restrictions on social activities and nonessential businesses implemented in our service territories in 2020 have been relaxed. However, certain restrictions remain in place that limit individual activities and the operation of nonessential businesses and additional restrictions may be imposed in the future.
We continue to assess the impacts the COVID-19 pandemic is having on our businesses, including but not limited to impacts on our liquidity; demand for residential, commercial and industrial electric and natural gas services; changes in deferred payment arrangements for customers; the timing and extent to which recovery of incremental costs incurred, net of savings, and forgone customer late fee revenues at Ameren Missouri is allowed by the MoPSC; changes in our ability to disconnect customers for nonpayment; bad debt expense; supply chain operations; the availability of our employees and contractors; counterparty credit; capital construction; infrastructure operations and maintenance; energy-efficiency programs; and pension valuations. In March 2021, the MoPSC approved accounting authority orders that allowed Ameren Missouri to accumulate $9 million of certain costs incurred related to the COVID-19 pandemic, net of savings, as well as forgone customer late fees and reconnection fee revenues from March 2020 to March 2021, for potential recovery in the current electric and natural gas service regulatory rate reviews.sales. While the revenues from Ameren Illinois’ electric distribution business, residential and small nonresidential customers of Ameren Illinois’ natural gas distribution business, and Ameren Illinois’ and ATXI’s electric transmission businesses are decoupled from changes in sales volumes, earnings at Ameren Missouri and those associated with Ameren Illinois’ large nonresidential natural gas customers are exposed to such changes. Regarding uncollectible accounts receivable, Ameren Illinois’ electric distribution and natural gas distribution businesses have bad debt riders, which provide for recoveryThe continued effect of bad debt write-offs, net of any subsequent recoveries. Ameren Missouri does not have a bad debt rider or tracker, and thus its earnings are exposed to increases in bad debt expense, absent regulatory relief. However, Ameren Missouri does not expect a material impact to earnings from increases in bad debt expense. As of March 31, 2021, accounts receivable balances that were 30 days or greater past due or that were a part of a deferred payment arrangement represented 27%, 19%, and 32%, or $137 million, $33 million, and $104 million, of Ameren’s, Ameren Missouri’s, and Ameren Illinois’ customer trade receivables before allowance for doubtful accounts, respectively. As of March 31, 2020, these percentages were 21%, 16%, and 25%, or $99 million, $29 million, and $70 million, for Ameren, Ameren Missouri, and Ameren Illinois, respectively. For information regarding Ameren Illinois’ suspension and subsequent reinstatement of customer disconnections and late fee charges for nonpayment and Ameren Missouri’s accounting authority orders related to the COVID-19 pandemic see Note 2 – Rateon our results of operations, financial position, and Regulatory Matters below.liquidity in subsequent periods will depend on its severity and longevity, future regulatory or legislative actions with respect thereto, and the resulting impact on business, economic, and capital market conditions.
Ameren’s and Ameren Missouri’s financial statements are prepared on a consolidated basis and therefore include the accounts of itstheir majority-owned subsidiaries. All intercompany transactions have been eliminated. Ameren Missouri andMissouri’s subsidiaries were created for the ownership of renewable generation projects. Ameren Illinois havehas no subsidiaries. All tabular dollar amounts are in millions, unless otherwise indicated.
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Our accounting policies conform to GAAP. Our financial statements reflect all adjustments (which include normal, recurring adjustments) that are necessary, in our opinion, for a fair statementpresentation of our results. The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions. Such estimates and assumptions affect reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the dates of financial statements, and the reported amounts of revenues and expenses during the reportedreporting periods. Actual results could differ from those estimates. The results of operations offor an interim period may not give a true indication of results that may be expected for a full year. These financial statements should be read in conjunction with the financial statements and accompanying notes included in the Form 10-K.
Variable Interest Entities
As of March 31, 2021,2022, and December 31, 2020,2021, Ameren had unconsolidated variable interests as a limited partner in various equity method investments, primarily to advance clean and resilient energy technologies, totaling $41$60 million and $37$56 million, respectively, included in “Other assets” on Ameren’s consolidated balance sheet. Any earnings or losses related to these investments are included in “Other Income, Net” on Ameren’s consolidated statement of income and comprehensive income. Ameren is not the primary beneficiary of these investments because it does not have the power to direct matters that most significantly affect the activities of these variable interest entities. As of March 31, 2021,2022, the maximum exposure to loss related to these variable interests is limited to the investment in these partnerships of $41$60 million plus associated outstanding funding commitments of $33$28 million.
Company-owned Life Insurance
Ameren and Ameren Illinois have company-owned life insurance, which is recorded at the net cash surrender value. The net cash
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surrender value is the amount that can be realized under the insurance policies at the balance sheet date. As of March 31, 2021,2022, the cash surrender value of company-owned life insurance at Ameren and Ameren Illinois was $275$258 million (December 31, 20202021 – $272$278 million) and $117$112 million (December 31, 20202021 – $115$117 million), respectively, while total borrowings against the policies were $107$103 million (December 31, 20202021 – $107$109 million) at both Ameren and Ameren Illinois. Ameren and Ameren Illinois have the right to offset the borrowings against the cash surrender value of the policies and, consequently, present the net asset in “Other assets” on their respective balance sheets. The net cash surrender value of Ameren’s company-owned life insurance is affected by the investment performance of a separate account in which Ameren holds a beneficial interest.
NOTE 2 – RATE AND REGULATORY MATTERS
Below is a summary of updates to significant regulatory proceedings and related legal proceedings. See Note 2 – Rate and Regulatory Matters under Part II, Item 8, of the Form 10-K for additional information and a summary of our regulatory frameworks. We are unable to predict the ultimate outcome of these matters, the timing of final decisions of the various agencies and courts, or the impact on our results of operations, financial position, or liquidity.
Missouri
December 2021 MoPSC Electric Service Regulatoryand Natural Gas Rate ReviewOrders
In MarchDecember 2021, the MoPSC issued orders in Ameren Missouri’s 2021 electric service and natural gas delivery service regulatory rate reviews. The new electric and natural gas rates approved by these orders went into effect on February 28, 2022.
MoPSC Staff Review of Planned Rush Island Energy Center Retirement
In February 2022, the MoPSC issued an order directing the MoPSC staff to review Ameren Missouri’s planned accelerated retirement of the Rush Island Energy Center as a result of the NSR and Clean Air Act Litigation discussed in Note 9 – Commitments and Contingencies. The MoPSC staff’s review will include potential impacts on the reliability and cost of Ameren Missouri’s service to its customers, Ameren Missouri’s plans to mitigate the customer impacts of the accelerated retirement, and the prudence of Ameren Missouri’s actions and decisions with regard to the Rush Island Energy Center, among other things. In April 2022, the MoPSC staff filed an initial report with the MoPSC in which the staff concluded early retirement of the Rush Island Energy Center may cause reliability concerns. The MoPSC staff is under no deadline to complete this review. Ameren Missouri is unable to predict the results of this matter; however, results of the review could be used in other MoPSC proceedings, which could have a material adverse effect on the results of operations, financial position, and liquidity of Ameren and Ameren Missouri.
Illinois
MYRP ROE Performance Metrics
Under an MYRP, the ROE approved by the ICC would be subject to annual adjustments during the four-year period based on certain performance metrics, with aggregate symmetrical performance-based ROE incentives and penalties ranging from 20 to 60 basis points annually. In January 2022, Ameren Illinois filed a request with the MoPSC seeking approvalICC proposing performance metrics that would be used in determining ROE incentives and penalties. The ICC is required to increase its annual revenues for electric serviceissue an order on this matter by $299 million. The electric rate increase request is based on a 9.9% ROE, a capital structure composed of 51.9% common equity, a rate base of $10.0 billion, and a test year ended December 31, 2020, with certain pro-forma adjustments expected through an anticipated true-up date of September 30, 2021. Ameren Missouri also requested the continued use of the FAC and trackers for pension and postretirement benefits, uncertain income tax positions, and certain excess deferred income taxes that the MoPSC previously authorized in earlier electric rate orders. Additionally, Ameren Missouri requested to recover certain estimated costs associated with the Meramec Energy Center, which is expected to be retired in 2022, over a five-year period. Ameren Missouri requested the use of a tracker for any variances between certain costs collected in customer rates associated with the Meramec Energy Center and actual costs incurred after the date new rates become effective, which would be considered for recovery or refund in a future electric regulatory rate review. The electric rate increase request reflects the following:
•increased infrastructure investments made under Ameren Missouri’s Smart Energy Plan;
•the impact of the transition to a cleaner generation portfolio, including advancing the retirement dates of the Sioux and Rush Island energy centers consistent with Ameren Missouri’s 2020 IRP and 700 MWs of wind generation investment for the High Prairie and Atchison renewable energy centers, which are mitigated by reductions resulting from the request to recover certain Meramec Energy Center costs over a five-year period and the associated tracker;
•decreased weather-normalized customer sales volumes; and
•increased pension and other post-retirement benefits and tax amortization expenses, partially offset by decreased other operations and maintenance expenses.
The MoPSC proceeding relating to the proposed electric service rate changes will take place over a period of up to 11 months, with a decision by the MoPSC expected by February 2022 and new rates effective by March 2022. Ameren Missouri cannot predict the level of any electric service rate change the MoPSC may approve, whether the requested regulatory recovery mechanisms will be approved, or whether
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any rate change that may eventually be approved will be sufficient for Ameren Missouri to recover its costs and earn a reasonable return on its investments when the rate change goes into effect.
Wind Generation Facility
In January 2021, Ameren Missouri acquired an up-to 300-MW wind generation project located in northwestern Missouri and partially placed it in service as the Atchison Renewable Energy Center. As of the date of this filing, Ameren Missouri has placed approximately half of the project in service, representing a purchase price of approximately $250 million, including an immaterial amount of transaction costs. Ameren Missouri expects the remaining MWs of the project to be in service by the end of September 2021. The Atchison Renewable Energy Center will support Ameren Missouri’s compliance with the Missouri renewable energy standard.
2021 Natural Gas Delivery Service Regulatory Rate Review
In March 2021, Ameren Missouri filed a request with the MoPSC seeking approval to increase its annual revenues for natural gas delivery service by $9 million. The natural gas rate increase request is based on a 9.8% ROE, a capital structure composed of 51.9% common equity, a rate base of $310 million, and a test year ended December 31, 2020, with certain pro-forma adjustments expected through an anticipated true-up date of September 30, 2021. The request includes the continued use of the PGA, ISRS, and DCA and trackers for pension and other postretirement benefits and certain excess deferred taxes that the MoPSC previously authorized in earlier natural gas rate orders.
The MoPSC proceeding relating to the proposed natural gas delivery service rate changes will take place over a period of up to 11 months, with a decision by the MoPSC expected by February 2022 and new rates effective by March 2022. Ameren Missouri cannot predict the level of any natural gas delivery service rate change the MoPSC may approve, or whether any rate change that may eventually be approved will be sufficient for Ameren Missouri to recover its costs and earn a reasonable return on its investments when the rate change goes into effect.
Accounting Authority Orders Related to COVID-19 Pandemic Costs
In March 2021, the MoPSC issued orders approving nonunanimous stipulation and agreements related to Ameren Missouri’s electric and natural gas service accounting authority order requests. The orders allowed Ameren Missouri to accumulate $9 million of certain costs incurred related to the COVID-19 pandemic, net of cost savings, as well as forgone customer late fee and reconnection fee revenues from March 2020 to March 2021, for potential recovery in the electric and natural gas service regulatory rate reviews discussed above. As of March 31, 2021, Ameren Missouri deferred other operations and maintenance expenses of $5 million as a regulatory asset related to the accounting authority orders. If approved for recovery, Ameren Missouri would recognize the remaining $4 million associated with forgone customer late fee and reconnection fee revenue when billed to customers.
Illinois
Electric Distribution Service Rates Under IEIMA
In April 2021,2022, Ameren Illinois filed its annual electric distribution service performance-based formula rate update with the ICC to be used for 2023 rates, requesting an increase of $64 million in its rates.$83 million. This update reflects an increase to the annual performance-based formula rate based on 20202021 actual recoverable costs and expected net plant additions for 2022, an increase to include the 20202021 revenue requirement reconciliation adjustment including a capital structure composed of 54% common equity, and an increasea decrease for the conclusion of the 20192020 revenue requirement reconciliation adjustment, which will be fully refunded tocollected from customers in 2021,2022, consistent with the ICC’s December 20202021 annual update filing order. It also reflects an increase based on expected net plant additions for 2021. An ICC decision in this proceeding is expectedrequired by December 2021,2022, with new rates effective in January 2022.2023.
Electric Distribution Service Rate Reconciliation TariffCustomer Energy-Efficiency Investments
In March 2021, the ICC issued an order approving Ameren Illinois’ requested tariff to reconcile its electric distribution service revenue requirement for a period of up to two years after the final customer rate update under performance-based formula ratemaking. To utilize the reconciliation, the ICC-approved tariff requires Ameren Illinois to file a traditional regulatory rate review for its electric distribution service, which may be based on a future test year, by the end of March in the year following the last year in which an annual performance-based formula rate update was permitted. Pursuant to this order, and without legislative change or Ameren Illinois’ election to no longer use performance-based formula ratemaking, Ameren Illinois’April 2022, and 2023 revenues would reflect each year’s actual costs, year-end rate base, and a return at the applicable WACC, with the ROE based on the annual average of the monthly yields of the 30-year United States Treasury bonds plus 580 basis points. The revenue requirement adjustment will be collected from, or refunded to, customers within two years from the end of the reconciled year.
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Electric Energy Efficiency Plan
In March 2021, Ameren Illinois filed a revised energy-efficiency plan with the ICC an energy-efficiency plan which includes annual investmentsto invest approximately $120 million per year in electric energy-efficiency programs up to approximately $100 million per year from 2022 through 2025.2025, which reflects the increased level of annual investments allowed under the IETL. The ICC has the ability to reduce the amount of electric energy-efficiency savings goals in future plan program years if there are insufficient cost-effective programs available, which could reduce the investments in electric energy-efficiency programs. The electric energy-efficiency program investments and the return on those investments are collected from customers through a rider and are not included inrecovered through the electric distribution service performance-based formula ratemaking framework. A decision by theThe ICC is under no deadline to issue an order in this proceeding is expected by September 2021.proceeding.
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QIP Reconciliation OrderHearing
In March 2021,2020, Ameren Illinois filed a request with the ICC issued an order approving Ameren Illinois’ QIPfor a reconciliation for 2018. The ICC also found that Ameren Illinois’hearing to determine the accuracy and prudence of natural gas capital investments recovered under the QIP rider during 2018 were accurate and prudent. The ICC order effectively dismissed2019. In August 2021, the Illinois Attorney General’s challenge with respect to 2018office challenged the recovery of capital investments.
Service Disconnection Moratorium
From March 2020 through Marchinvestments that were made during 2019, alleging that the ICC should disallow approximately $70 million in natural gas capital investments as improper and imprudent, providing a potential over-recovery of approximately $3 million in 2019. In August and December 2021, the ICC limited disconnection activitiesstaff filed testimony that supports the prudence and late fees for customer nonpayment to varying degrees based on customer class. In March 2021,reasonableness of the capital investments made during 2019. Ameren Illinois’ 2019 QIP rate recovery request under review by the ICC issuedis within the rate increase limitations allowed by law. The ICC is under no deadline to issue an order allowing Ameren Illinois to resume disconnection activities for all residential customers through a phased-in approach, which began in April 2021 for customers with the largest past due balances and will resume by June 2021 for all remaining residential customers. The March 2021 order also requires Ameren Illinois to offer deferred payment arrangements, extending to 18 months, to all residential customers through June 2021. In addition, the order requires Ameren Illinois to extend the financial assistance program established by a June 2020 ICC order through 2021. Ameren Illinois is allowed to recover up to $4 million in costs incurred during 2021 related to this financial assistance program. These costs will be deferred as regulatory assets and the portion associated with Ameren Illinois’ electric distribution business will be recovered through its bad debt rider and the portion associated with its natural gas distribution business will be recovered through a special purpose rider.proceeding.
Federal
Transmission Formula Rate Revisions
In February 2020, the MISO, on behalf of Ameren Missouri, Ameren Illinois, and ATXI, filed requests with the FERC to revise each company’s transmission formula rate calculations with respect to the calculation used for materials and supplies inventories included in rate base. In May 2020, the FERC issued orders approving the revisions prospectively. In addition, the FERC declined to order refunds for earlier periods, as requested by intervenors in Ameren Illinois’ filing, but directed its audit staff to review historical rate recovery in connection with an ongoing FERC audit. In June 2020, Ameren Missouri, Ameren Illinois, and ATXI filed requests for rehearing arguing, among other things, the revisions should be applied retrospectively to include the period January 1, 2019, to June 1, 2020, and that the FERC should not require refunds for periods prior to 2019. In July 2020, the FERC denied the rehearing requests without addressing the issues raised. In July 2020, Ameren Missouri, Ameren Illinois, and ATXI filed an appeal of the July 2020 rehearing denials to the United States Court of Appeals for the District of Columbia Circuit, which is under no deadline to address the appeal. In October 2020, the FERC issued an order reaffirming its May 2020 order and denying the arguments raisedSeparately, in the rehearing requests filed by Ameren Missouri, Ameren Illinois, and ATXI. Regardless of the outcome of the appeal, the impacts of the May 2020 and October 2020 orders are not expected to be material to Ameren’s, Ameren Missouri’s, or Ameren Illinois’ results of operations, financial position, or liquidity.
In March 2021, the FERC issued an order related to an intervenor challenge to Ameren Illinois’ 2020 transmission formula rate update. As a result of this order, in March 2021, Ameren Illinois recorded a regulatory liability of $9 million, largely as a reduction of electric operating revenues, to reflect expected refunds, including interest, primarily related to the historical rate recovery of materials and supplies inventories included in rate base. In April 2021,The refund amount was reflected in rates as of January 2022 and will be refunded to customers by the end of 2022. Ameren Missouri, Ameren Illinois, and ATXI filed a requestappeals of the FERC's May 2020 and March 2021 orders, and related FERC orders denying requests for rehearing, withto the FERC regarding itsUnited States Court of Appeals for the District of Columbia Circuit. In January 2022, the appeals were consolidated by the court. The court is under no deadline to address the appeal. Regardless of the outcome of the appeal, the impact of the May 2020 and March 2021 order.orders is not expected to be material to Ameren’s, Ameren Missouri’s, or Ameren Illinois’ results of operations, financial position, or liquidity.
FERC Complaint Cases
InSince November 2013, a customer group filed a complaint case with the FERC seeking a reduction in the allowed base ROE for FERC-regulated transmission rate base under the MISO tariff from 12.38%has been subject to 9.15%. In September 2016, thecustomer complaint cases and has been changed by various FERC issued an order in the November 2013 complaint case, which lowered the allowed base ROE to 10.32%, or a 10.82% total allowed ROE with the inclusion of a 50 basis point incentive adder for participation in an RTO, that was effective from late September 2016 forward. The September 2016 order also required refunds for the period November 2013 to February 2015, which were paid in 2017. In November 2019, the FERC issued an order addressing the November 2013 complaint case, which set the allowed base ROE at 9.88%, superseding the 10.32% previously ordered, and required refunds, with interest, for the periods November 2013 to February 2015 and from late September 2016 forward. In December 2019, the MISO transmission owners, including Ameren Missouri, Ameren Illinois, and ATXI, filed requests for rehearing with the FERC.orders. In May 2020, the FERC issued an order, addressing the requests for rehearing, which set the allowed base ROE atto 10.02%, superseding the 9.88%
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previously ordered, and required refunds, with interest, for the periods November 2013 to February 2015 and from late September 2016 forward. In June 2020, various parties filed requests for rehearing with the FERC, challenging the new ROE methodology established by the May 2020 order. In July 2020, the FERC denied the rehearing requests without addressing the issues raised, and indicated it will address the requests for rehearing in a future order. Also in July 2020, Ameren Missouri, Ameren Illinois, and ATXI filed an appeal of the May 2020 order to the United States Court of Appeals for the District of Columbia Circuit challenging the refunds required for the period from September 2016 to May 2020. The court is under no deadline to address the appeal.
As of March 31, 2021,2022, Ameren and Ameren Illinois had recorded current regulatory liabilities of $17 million and $9 million, respectively, to reflectpaid the expected refunds, including interest, associated with the allowed base ROE set by the May 2020 order in the November 2013 complaint case. The increase in the FERC-allowed base ROE resulting from the May 2020 order is not material to Ameren Missouri’s results of operations, financial position, or liquidity.order.
NOTE 3 – SHORT-TERM DEBT AND LIQUIDITY
The liquidity needs of the Ameren Companies are typically supported through the use of available cash, drawings under committed credit agreements, commercial paper issuances, and, in the case of Ameren Missouri and Ameren Illinois, short-term affiliate borrowings. See Note 4 – Short-term Debt and Liquidity under Part II, Item 8, in the Form 10-K for a description of our indebtedness provisions and other covenants as well as a description of money pool arrangements.
Short-TermShort-term Borrowings
The Missouri Credit Agreement and the Illinois Credit Agreement are available to support issuances under Ameren (parent)’s, Ameren Missouri’s, and Ameren Illinois’ commercial paper programs, respectively, subject to borrowing sublimits, and the issuance of letters of credit. As of March 31, 2021,2022, based on commercial paper outstanding and letters of credit issued under the Credit Agreements, along with cash and cash equivalents, the net liquidity available to Ameren (parent), Ameren Missouri, and Ameren Illinois, collectively, was $1.4$1.2 billion. The Ameren Companies were in compliance with the covenants in their Credit Agreements as of March 31, 2021.2022. As of March 31, 2021,2022, the ratios of consolidated indebtedness to consolidated total capitalization, calculated in accordance with the provisions of the Credit Agreements, were 57%59%, 49%50%, and 46%44% for Ameren, Ameren Missouri, and Ameren Illinois, respectively.
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The following table presents commercial paper outstanding, net of issuance discounts, as of March 31, 2021,2022, and December 31, 2020.2021. There were no borrowings outstanding under the Credit Agreements as of March 31, 2021,2022, or December 31, 2020.2021.
March 31, 2021December 31, 2020March 31, 2022December 31, 2021
Ameren (parent)Ameren (parent)$362 $490 Ameren (parent)$466 $277 
Ameren MissouriAmeren Missouri204 0 Ameren Missouri528 165 
Ameren IllinoisAmeren Illinois323 0 Ameren Illinois107 103 
Ameren consolidatedAmeren consolidated$889 $490 Ameren consolidated$1,101 $545 
The following table summarizes the activity and relevant interest rates for Ameren (parent)’s, Ameren Missouri’s, and Ameren Illinois’ commercial paper issuances and borrowings under the Credit Agreements in the aggregate for the three months ended March 31, 20212022 and 2020:2021:
Ameren
(parent)		Ameren
Missouri		Ameren
Illinois		Ameren
Consolidated		Ameren
(parent)		Ameren
Missouri		Ameren
Illinois		Ameren
Consolidated
20222022
Average daily amount outstandingAverage daily amount outstanding$282 $408 $99 $789 
Weighted-average interest rateWeighted-average interest rate0.41 %0.44 %0.33 %0.41 %
Peak amount outstanding during period(a)
Peak amount outstanding during period(a)
$466 $539 $142 $1,101 
Peak interest ratePeak interest rate1.05 %1.06 %1.15 %1.15 %
202120212021
Average daily amount outstandingAverage daily amount outstanding$454 $99 $96 $649 Average daily amount outstanding$454 $99 $96 $649 
Weighted-average interest rateWeighted-average interest rate0.25 %0.22 %0.21 %0.24 %Weighted-average interest rate0.25 %0.22 %0.21 %0.24 %
Peak amount outstanding during period(a)
Peak amount outstanding during period(a)
$650 $206 $353 $916 
Peak amount outstanding during period(a)
$650 $206 $353 $916 
Peak interest ratePeak interest rate0.33 %0.25 %0.25 %0.33 %Peak interest rate0.33 %0.25 %0.25 %0.33 %
2020
Average daily amount outstanding$157 $395 $76 $628 
Weighted-average interest rate1.94 %1.86 %1.99 %1.89 %
Peak amount outstanding during period(a)
$425 $573 $150 $908 
Peak interest rate3.30 %5.05 %(b)3.40 %5.05 %(b)
(a)The timing of peak outstanding commercial paper issuances and borrowings under the Credit Agreements varies by company. Therefore, the sum of individual company peak amounts may not equal the Ameren consolidated peak for the period.
(b)Ameren’s and Ameren Missouri’s peak interest rate was affected by temporary disruptions in the commercial paper market in the first quarter of 2020.
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Money Pools
Ameren has money pool agreements with and among its subsidiaries to coordinate and provide for certain short-term cash and working capital requirements. The average interest rate for borrowings under the utility money pool for the three months ended March 31, 2021,2022, was 0.39% (2021 – 0.22% (2020 – 1.93%).). See Note 8 – Related-party Transactions for the amount of interest income and expense from the utility money pool arrangements recorded by Ameren Missouri and Ameren Illinois for the three months ended March 31, 20212022 and 2020.2021.
NOTE 4 – LONG-TERM DEBT AND EQUITY FINANCINGS
Ameren
For the three months ended March 31, 2021,2022, Ameren issued a total of 0.1 million shares of common stock under its DRPlus and 401(k) plan, and received proceeds of $12$5 million and had a receivable of $8 million. In addition, in the first quarter of 2021,2022, Ameren issued 0.50.4 million shares of common stock valued at $33$31 million upon the vestingsettlement of stock-based compensation.compensation awards.
In FebruaryMay 2021, Ameren settled the remainderentered into an equity distribution sales agreement pursuant to which Ameren may offer and sell from time to time up to $750 million of the forward sale agreement by physically delivering 1.6 million shares ofits common stock for cash proceeds of $113 million. The proceedsthrough an ATM program, which includes the ability to enter into forward sales agreements. There were used to fund a portion of Ameren Missouri’s wind generation investments. See Note 2 - Rate and Regulatory Mattersno shares issued under the ATM program for additional information about the wind generation investments.
In March 2021, Ameren (parent) issued $450 million of 1.75% senior unsecured notes due March 2028, with interest payable semiannually on March 15 and September 15 of each year, beginning September 15, 2021. Ameren received net proceeds of $447 million, which were used for general corporate purposes, including the repayment of short-term debt.
Ameren Missouri
Ameren Missouri received capital contributions totaling $113 million from Ameren (parent) during the three months ended March 31, 2021.2022. As of March 31, 2022, Ameren had approximately $320 million of common stock available to issue under the ATM program, which takes into account the forward sale agreements in effect as of March 31, 2022, discussed below.
Ameren Illinoishas entered into multiple forward sale agreements, including the April 2022 forward sale agreement discussed below, under the ATM program with various counterparties relating to 3.4 million shares of common stock. Ameren expects to settle the forward sale agreements by December 31, 2022.
Related to the forward sale agreements outstanding as of March 31, 2022, these agreements can be settled at Ameren’s discretion on or prior to dates ranging from May 3, 2023 to September 30, 2023. On a settlement date or dates, if Ameren elects to physically settle the forward sale agreement, Ameren will issue shares of common stock to the counterparties at the then-applicable forward sale price. The initial forward sale price for the agreements ranged from $86.35 to $88.81 with a weighted average initial sale price of $87.61. Each initial forward sale price is subject to adjustment based on a floating interest rate factor equal to the overnight bank funding rate less a spread of 75 basis points, and will be subject to decrease on certain dates specified in the forward sale agreements by specified amounts related to expected dividends on shares of the common stock during the term of the forward sale agreements. If the overnight bank funding rate is less than the spread on any day, the interest rate factor will result in a reduction of the forward sale price. The forward sale agreements will be physically
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settled unless Ameren elects to settle in cash or to net share settle. At March 31, 2022, Ameren could have settled the forward sale agreements with physical delivery of 3.2 million shares of common stock to the respective counterparties in exchange for cash of $276 million. The forward sale agreements could have also been settled at March 31, 2022, with delivery of approximately $21 million of cash or approximately 0.2 million shares of common stock to the counterparties. In connection to the forward sale agreements, the various counterparties, or their affiliates, borrowed from third parties and sold 3.2 million shares of common stock. The gross sales price of these shares totaled $280 million. In connection with such sales, the counterparties were deemed to have received commissions of $3 million. Ameren has not received any proceeds from such sales of borrowed shares. The forward sale agreements have been classified as equity transactions.
In March 2021,April 2022, Ameren Illinois redeemed its 6.625% and 7.75% series preferred stockentered into a forward sale agreement under the ATM program relating to 0.2 million shares of common stock. The April 2022 forward sale can be settled at parAmeren’s discretion on or prior to September 30, 2023. The forward sale price was initially $91.41 for $12 million and $1 million, respectively. The preferred stock of Ameren Illinois is reflected in “Noncontrolling Interests” on Ameren’s consolidated balance sheet.the April 2022 forward sale agreement.
Ameren IllinoisMissouri
In April 2022, Ameren Missouri issued $525 million of 3.90% first mortgage bonds due April 2052, with interest payable semiannually on April 1 and October 1 of each year, beginning October 1, 2022. Ameren Missouri received net proceeds of $519 million, which were used to repay short-term debt and for near-term capital contributions totaling $40expenditures. Ameren Missouri intends to allocate an amount equal to the net proceeds to sustainability projects meeting certain eligibility criteria.
ATXI
In November 2021, pursuant to a note purchase agreement, ATXI agreed to issue $95 million of its 2.96% senior unsecured notes due 2052, with interest payable semiannually on February 25 and August 25 of each year, beginning February 25, 2023, through a private placement offering exempt from registration under the Securities Act of 1933, as amended. ATXI expects to issue the notes and receive net proceeds of $95 million in August 2022, which will be used to refinance the remaining portion of an intercompany long-term note with Ameren (parent) during the three months ended March 31, 2021., repay a $50 million principal payment of its 3.43% senior unsecured notes, and to repay short-term debt.
Indenture Provisions and Other Covenants
See Note 5 – Long-TermLong-term Debt and Equity Financings under Part II, Item 8, in the Form 10-K for a description of our indenture provisions and other covenants, as well as restrictions on the payment of dividends. At March 31, 2021,2022, the Ameren Companies were in compliance with the provisions and covenants contained in their indentures and articles of incorporation, as applicable, and ATXI was in compliance with the provisions and covenants contained in its note purchase agreement.agreements.
Off-balance-sheet Arrangements
At March 31, 2021,2022, none of the Ameren Companies had any significant off-balance-sheet financing arrangements, other than variable interest entities.entities and the multiple forward sale agreements under the ATM program relating to common stock. See Note 1 – Summary of Significant Accounting Policies for further detail concerning variable interest entities.
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NOTE 5 – OTHER INCOME, NET
The following table presents the components of “Other Income, Net” in the Ameren Companies’ statements of income for the three months ended March 31, 20212022 and 2020:2021:
Three MonthsThree Months
2021202020222021
Ameren:Ameren:Ameren:
Allowance for equity funds used during constructionAllowance for equity funds used during construction$7 $4 Allowance for equity funds used during construction$8 $7 
Interest income on industrial development revenue bondsInterest income on industrial development revenue bonds6 6 Interest income on industrial development revenue bonds6 6 
Other interest income1 1 
Non-service cost components of net periodic benefit income(a)
Non-service cost components of net periodic benefit income(a)
34 23 
Non-service cost components of net periodic benefit income(a)
46 34 
Miscellaneous incomeMiscellaneous income4 2 Miscellaneous income7 5 
DonationsDonations(3)(13)(b)Donations(2)(3)
Miscellaneous expenseMiscellaneous expense(3)(2)Miscellaneous expense(5)(3)
Total Other Income, NetTotal Other Income, Net$46 $21 Total Other Income, Net$60 $46 
Ameren Missouri:Ameren Missouri:Ameren Missouri:
Allowance for equity funds used during constructionAllowance for equity funds used during construction$4 $2 Allowance for equity funds used during construction$4 $4 
Interest income on industrial development revenue bondsInterest income on industrial development revenue bonds6 6 Interest income on industrial development revenue bonds6 6 
Non-service cost components of net periodic benefit income(a)
Non-service cost components of net periodic benefit income(a)
14 5 
Non-service cost components of net periodic benefit income(a)
14 14 
Miscellaneous incomeMiscellaneous income1 1 Miscellaneous income2 1 
DonationsDonations0 (8)(b)Donations(1)— 
Miscellaneous expenseMiscellaneous expense(2)(2)Miscellaneous expense(2)(2)
Total Other Income, NetTotal Other Income, Net$23 $4 Total Other Income, Net$23 $23 
Ameren Illinois:Ameren Illinois:Ameren Illinois:
Allowance for equity funds used during constructionAllowance for equity funds used during construction$3 $2 Allowance for equity funds used during construction$4 $3 
Interest income1 1 
Non-service cost components of net periodic benefit incomeNon-service cost components of net periodic benefit income14 13 Non-service cost components of net periodic benefit income21 14 
Miscellaneous incomeMiscellaneous income0 1 Miscellaneous income2 1 
DonationsDonations(3)(4)Donations(1)(3)
Miscellaneous expenseMiscellaneous expense(1)(2)Miscellaneous expense(2)(1)
Total Other Income, NetTotal Other Income, Net$14 $11 Total Other Income, Net$24 $14 
(a)For the three months ended March 31, 20212022 and 2020,2021, the non-service cost components of net periodic benefit income were adjusted by amounts deferred of $6 million and less than $(1) million and $6 million, respectively, due to a regulatory tracking mechanism for the difference between the level of such costs incurred by Ameren Missouri under GAAP and the level of such costs included in rates.
(b)Includes $8 million pursuant to Ameren Missouri’s March 2020 electric rate order. See Note 2 – Rate and Regulatory Matters under Part II, Item 8, in the Form 10-K for additional information.
NOTE 6 – DERIVATIVE FINANCIAL INSTRUMENTS
We use derivatives to manage the risk of changes in market prices for natural gas, power, and power,uranium, as well as the risk of changes in rail transportation surcharges through fuel oil hedges. Such price fluctuations may cause the following:
•an unrealized appreciation or depreciation of our contracted commitments to purchase or sell when purchase or sale prices under the commitments are compared with current commodity prices;
•market values of natural gas and uranium inventories that differ from the cost of those commodities in inventory;
•actual cash outlays for the purchase of these commodities that differ from anticipated cash outlays; and
•actual off-system sales revenues that differ from anticipated revenuesrevenues.
The derivatives that we use to hedge these risks are governed by our risk management policies for forward contracts, futures, options, and swaps. Our net positions are continually assessed within our structured hedging programs to determine whether new or offsetting transactions are required. The goal of the hedging program is generally to mitigate financial risks while ensuring that sufficient volumes are available to meet our requirements. Contracts we enter into as part of our risk management program may be settled financially, settled by physical delivery, or net settled with the counterparty.
All contracts considered to be derivative instruments are required to be recorded on the balance sheet at their fair values, unless the NPNS exception applies. Many of our physical contracts, such as our purchased power contracts, qualify for the NPNS exception to derivative accounting rules. The revenue or expense on NPNS contracts is recognized at the contract price upon physical delivery. The following disclosures exclude NPNS contracts and other non-derivative commodity contracts that are accounted for under the accrual method of accounting.
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If we determine that a contract meets the definition of a derivative and is not eligible for the NPNS exception, we review the contract to determine whether the resulting gains or losses qualify for regulatory deferral. Derivative contracts that qualify for regulatory deferral are recorded at fair value, with changes in fair value recorded as regulatory assets or liabilities in the period in which the change occurs. We
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believe derivative losses and gains deferred as regulatory assets and liabilities are probable of recovery, or refund, through future rates charged to customers. Regulatory assets and liabilities are amortized to operating income as related losses and gains are reflected in rates charged to customers. Therefore, gains and losses on these derivatives have no effect on operating income. As of March 31, 2021,2022, and December 31, 2020,2021, all contracts that met the definition of a derivative and were not eligible for the NPNS exception received regulatory deferral. Cash flows for all derivative financial instruments are classified in cash flows from operating activities.
The following table presents open gross commodity contract volumes by commodity type for derivative assets and liabilities as of March 31, 2021,2022, and December 31, 2020.2021. As of March 31, 2021,2022, these contracts extended through October 2023,2024, October 2026,2027, May 2032 and May 2032March 2024 for fuel oils, natural gas, power and power,uranium, respectively.
Quantity (in millions, except as indicated)Quantity (in millions)
March 31, 2021December 31, 2020March 31, 2022December 31, 2021
CommodityCommodityAmeren MissouriAmeren IllinoisAmerenAmeren MissouriAmeren IllinoisAmerenCommodityAmeren MissouriAmeren IllinoisAmerenAmeren MissouriAmeren IllinoisAmeren
Fuel oils (in gallons)Fuel oils (in gallons)36 0 36 43 0 43 Fuel oils (in gallons)25 — 25 30 — 30 
Natural gas (in mmbtu)Natural gas (in mmbtu)34 114 148 33 114 147 Natural gas (in mmbtu)36 146 182 35 144 179 
Power (in MWhs)Power (in MWhs)7 7 14 6 7 13 Power (in MWhs)4 6 10 6 6 12 
Uranium (pounds in thousands)Uranium (pounds in thousands)496 — 496 586 — 586 
The following table presents the carrying value and balance sheet location of all derivative commodity contracts, none of which were designated as hedging instruments, as of March 31, 2021,2022, and December 31, 2020:2021:
March 31, 2021December 31, 2020
Balance Sheet LocationAmeren
Missouri		Ameren
Illinois		AmerenAmeren
Missouri		Ameren
Illinois		Ameren
March 31, 2022December 31, 2021
Balance Sheet LocationAmeren
Missouri		Ameren
Illinois		AmerenAmeren
Missouri		Ameren
Illinois		Ameren
Fuel oilsFuel oilsOther current assets$2 $0 $2 $2 $0 $2 Fuel oilsMark-to-market derivative assets$(a)$— $18 $(a)$— $8 
Other assets3 0 3 0 0 0 
Other current assets18 — — 8 — — 
Other assets8 — 8 5 — 5 
Natural gasNatural gasOther current assets2 10 12 1 8 9 Natural gasMark-to-market derivative assets(a)74 90 (a)28 35 
Other assets2 4 6 2 2 4 
Other current assets16 — — 7 — — 
Other assets10 23 33 5 13 18 
PowerPowerOther current assets4 0 4 7 0 7 PowerMark-to-market derivative assets(a)5 24 (a)— 23 
Other assets1 0 1 0 0 0 
Other current assets19 — — 23 — — 
Other assets— — — — — — 
UraniumUraniumMark-to-market derivative assets(a)— 5 (a)— — 
Total assets$14 $14 $28 $12 $10 $22 
Other current assets5 — — — — — 
Other assets2 — 2 1 — 1 
Total assets$78 $102 $180 $49 $41 $90 
Fuel oilsOther current liabilities$3 $0 $3 $7 $0 $7 
Other deferred credits and liabilities0 0 0 2 0 2 
Natural gasNatural gasOther current liabilities0 0 0 1 1 2 Natural gasMark-to-market derivative liabilities— (a)(a)2 (a)(a)
Other deferred credits and liabilities0 0 0 0 1 1 
Other current liabilities— 2 2 — 6 8 
Other deferred credits and liabilities1 1 2 1 2 3 
PowerPowerOther current liabilities9 16 25 3 17 20 PowerMark-to-market derivative liabilities109 (a)(a)50 (a)(a)
Other deferred credits and liabilities5 169 174 8 181 189 
Other current liabilities— 1 110 — 9 59 
Other deferred credits and liabilities26 78 104 23 108 131 
UraniumUraniumMark-to-market derivative liabilities— (a)(a)1 (a)(a)
Total liabilities$17 $185 $202 $21 $200 $221 Other current liabilities— — — — — 1 
Total liabilities$136 $82 $218 $77 $125 $202 
The Ameren Companies elect(a)Balance sheet line item not applicable to presentregistrant.
We believe that entering into master netting arrangements or similar agreements mitigates the fair value amountslevel of financial loss that could result from default by allowing net settlement of derivative assets and liabilities. These master netting arrangements allow the counterparties to net settle sale and purchase transactions. Further, collateral requirements are calculated at the master netting arrangement or similar agreement level by counterparty.
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The following table provides the recognized gross derivative liabilitiesbalances and the net amounts of those derivatives subject to an enforceable master netting arrangement or similar agreement at theas of March 31, 2022, and December 31, 2021.
Gross Amounts Not Offset in the Balance Sheet
Commodity Contracts Eligible to be OffsetGross Amounts Recognized in the Balance SheetDerivative Instruments
Cash Collateral Received/Posted(a)
Net
Amount
2022
Assets:
Ameren Missouri$78 $19 $5 $54 
Ameren Illinois102 6 9 87 
Ameren$180 $25 $14 $141 
Liabilities:
Ameren Missouri$136 $19 $92 $25 
Ameren Illinois82 6 — 76 
Ameren$218 $25 $92 $101 
2021
Assets:
Ameren Missouri$49 $15 $— $34 
Ameren Illinois41 4 — 37 
Ameren$90 $19 $— $71 
Liabilities:
Ameren Missouri$77 $15 $47 $15 
Ameren Illinois125 4 — 121 
Ameren$202 $19 $47 $136 
(a)Cash collateral received reduces gross amountsasset balances and is included in “Other current liabilities” and “Other deferred credits and liabilities” on the balance sheet. However, if theCash collateral posted reduces gross amounts recognizedliability balances and is included in “Other current assets” and “Other assets” on the balance sheet were netted with derivative instruments and cash collateral received or posted, the net amounts would not be materially different from the gross amounts at March 31, 2021, and December��31, 2020.sheet.
Credit Risk
In determining our concentrations of credit risk related to derivative instruments, we review our individual counterparties and categorize each counterparty into groupings according to the primary business in which each engages. As of March 31, 2021,2022, if counterparty groups were to fail completely to perform on contracts, the Ameren, Companies’Ameren Missouri, and Ameren Illinois' maximum exposure related to derivative assets, would have been immaterial withpredominantly from financial institutions, was $176 million, $79 million, and $97 million, respectively. The potential loss on counterparty exposures may be reduced or withouteliminated by the application of master netting arrangements or similar agreements and collateral held. As of March 31, 2022, the potential loss after consideration of the application of master netting arrangements or similar agreements and collateral held.held for Ameren, Ameren Missouri, and Ameren Illinois was $144 million, $56 million, and $88 million, respectively.
Certain of our derivative instruments contain collateral provisions tied to the Ameren Companies’ credit ratings. If our credit ratings were downgraded below investment grade, or if a counterparty with reasonable grounds for uncertainty regarding our ability to satisfy an obligation requested adequate assurance of performance, additional collateral postings might be required. The additional collateral required is the net liability position allowed under master netting arrangements or similar agreements, assuming (1) the credit risk-related contingent features underlying these arrangements were triggered and (2) those counterparties with rights to do so requested collateral. AsThe following table presents, as of March 31, 2021,2022, the aggregate fair value of all derivative instruments with credit risk-related contingent features in a gross liability position, the cash collateral posted, and the aggregate amount of additional collateral that counterparties could require were each immaterialrequire.
Aggregate Fair Value of
Derivative Liabilities(a)
Cash
Collateral Posted
Potential Aggregate Amount of
Additional Collateral Required(b)
Ameren Missouri$36 $18 $7 
Ameren Illinois4 — 4 
Ameren$40 $18 $11 
(a)Before consideration of master netting arrangements or similar agreements.
(b)As collateral requirements with certain counterparties are based on master netting arrangements or similar agreements, the aggregate amount of additional collateral required to Ameren, Amerenbe posted is determined after consideration of the effects of such arrangements.
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Missouri, and Ameren Illinois.
NOTE 7 – FAIR VALUE MEASUREMENTS
Fair value is defined as the price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Fair value measurements are classified in three levels based on the fair value hierarchy as defined by GAAP. See Note 8 – Fair Value Measurements under Part II, Item 8, of the Form 10-K for information related to hierarchy levels and valuation techniques.
We consider nonperformance risk in our valuation of derivative instruments by analyzing our own credit standing and the credit standing of our counterparties, and by considering any credit enhancements (e.g., collateral). Included in our valuation, and based on current market conditions, is a valuation adjustment for counterparty default derived from market data such as the price of credit default swaps, bond yields, and credit ratings. No material gains or losses related to valuation adjustments for counterparty default risk were recorded at Ameren, Ameren Missouri, or Ameren Illinois in the three months ended March 31, 20212022 or 2020.2021. At March 31, 2021,2022, and December 31, 2020,2021, the counterparty default risk valuation adjustment related to derivative contracts was immaterial for Ameren, Ameren Missouri, and Ameren Illinois.
The following table sets forth, by level within the fair value hierarchy, our assets and liabilities measured at fair value on a recurring basis as of March 31, 2021,2022, and December 31, 2020:2021:
March 31, 2021December 31, 2020March 31, 2022December 31, 2021
Level 1Level 2Level 3TotalLevel 1Level 2Level 3TotalLevel 1Level 2Level 3TotalLevel 1Level 2Level 3Total
Assets:Assets:Assets:
Ameren MissouriAmeren MissouriAmeren Missouri
Derivative assets – commodity contracts:Derivative assets – commodity contracts:
Fuel oils$4 $0 $1 $5 $0 $0 $2 $2 Fuel oils$24 $— $2 $26 $13 $— $— $13 
Natural gas0 4 0 4 0 3 0 3 Natural gas— 26 — 26 — 12 — 12 
Power2 0 3 5 2 0 5 7 Power18 — 1 19 10 — 13 23 
Uranium— — 7 7 — — 1 1 
Total derivative assets – commodity contracts$6 $4 $4 $14 $2 $3 $7 $12 Total derivative assets – commodity contracts$42 $26 $10 $78 $23 $12 $14 $49 
Nuclear decommissioning trust fund:Nuclear decommissioning trust fund:
Equity securities:Equity securities:
U.S. large capitalization$679 $0 $0 $679 $680 $0 $0 $680 U.S. large capitalization$719 $— $— $719 $824 $— $— $824 
Debt securities:Debt securities:
U.S. Treasury and agency securities0 133 0 133 0 115 0 115 U.S. Treasury and agency securities— 174 — 174 — 141 — 141 
Corporate bonds0 128 0 128 0 115 0 115 Corporate bonds— 133 — 133 — 131 — 131 
Other0 63 0 63 0 67 0 67 Other— 61 — 61 — 56 — 56 
Total nuclear decommissioning trust fund$679 $324 $0 $1,003 (a)$680 $297 $0 $977 (a)Total nuclear decommissioning trust fund$719 $368 $— $1,087 (a)$824 $328 $— $1,152 (a)
Total Ameren Missouri$685 $328 $4 $1,017 $682 $300 $7 $989 Total Ameren Missouri$761 $394 $10 $1,165 $847 $340 $14 $1,201 
Ameren IllinoisAmeren IllinoisAmeren Illinois
Derivative assets – commodity contracts:Derivative assets – commodity contracts:
Natural gas$0 $10 $4 $14 $0 $6 $4 $10 Natural gas$7 $77 $13 $97 $1 $33 $7 $41 
Power— — 5 5 — — — — 
Total Ameren Illinois$7 $77 $18 $102 $1 $33 $7 $41 
AmerenAmerenAmeren
Derivative assets – commodity contracts(b)
$6 $14 $8 $28 $2 $9 $11 $22 
Derivative assets – commodity contracts(b)
$49 $103 $28 $180 $24 $45 $21 $90 
Nuclear decommissioning trust fund(c)
679 324 0 1,003 (a)680 297 0 977 (a)
Nuclear decommissioning trust fund(c)
719 368 — 1,087 (a)824 328 — 1,152 (a)
Total Ameren$685 $338 $8 $1,031 $682 $306 $11 $999 Total Ameren$768 $471 $28 $1,267 $848 $373 $21 $1,242 
Liabilities:Liabilities:Liabilities:
Ameren MissouriAmeren MissouriAmeren Missouri
Derivative liabilities – commodity contracts:Derivative liabilities – commodity contracts:
Fuel oils$1 $0 $2 $3 $6 $0 $3 $9 
Natural gas0 0 0 0 0 1 — 1 Natural gas$— $1 $— $1 $— $2 $1 $3 
Power8 0 6 14 8 0 3 11 Power81 — 54 135 45 — 28 73 
Uranium— — — — — — 1 1 
Total Ameren Missouri$9 $0 $8 $17 $14 $1 $6 $21 Total Ameren Missouri$81 $1 $54 $136 $45 $2 $30 $77 
Ameren Illinois
Derivative liabilities – commodity contracts:
Natural gas$0 $0 $0 $0 $0 $1 $1 $2 
Power0 0 185 185 0 0 198 198 
Total Ameren Illinois$0 $0 $185 $185 $0 $1 $199 $200 
Ameren
Derivative liabilities – commodity contracts(b)
$9 $0 $193 $202 $14 $2 $205 $221 
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March 31, 2022December 31, 2021
Level 1Level 2Level 3TotalLevel 1Level 2Level 3Total
Ameren Illinois
Derivative liabilities – commodity contracts:
Natural gas$— $1 $2 $3 $— $5 $3 $8 
Power— — 79 79 — — 117 117 
Total Ameren Illinois$— $1 $81 $82 $— $5 $120 $125 
Ameren
Derivative liabilities – commodity contracts(b)
$81 $2 $135 $218 $45 $7 $150 $202 
(a)Balance excludesexcludes $7 million and $5 million of cash and cash equivalents, receivables, payables, and accrued income, net, for both March 31, 2021,2022, and December 31, 2020, respectively.2021.
(b)See the Ameren Missouri and Ameren Illinois sections of the table for a breakout of the fair value of Ameren’s derivative assets and liabilities by type of commodity.
(c)See the Ameren Missouri section of the table for a breakout of the fair value of Ameren's nuclear decommissioning trust fund by investment type.
Level 3 fuel oils, and natural gas, and uranium derivative contract assets and liabilities measured at fair value on a recurring basis were immaterial for all periods presented. The following table presents the fair value reconciliation of Level 3 power derivative contract assets and liabilities measured at fair value on a recurring basis for the three months ended March 31, 20212022 and 2020:2021:
20222021
Ameren MissouriAmeren IllinoisAmerenAmeren MissouriAmeren IllinoisAmeren
20212020
Ameren MissouriAmeren IllinoisAmerenAmeren MissouriAmeren IllinoisAmeren
For the three months ended March 31:For the three months ended March 31:For the three months ended March 31:
Beginning balance at January 1Beginning balance at January 1$2 $(198)$(196)$13 $(224)$(211)Beginning balance at January 1$(15)$(117)$(132)$2 $(198)$(196)
Realized and unrealized gains/(losses) included in regulatory assets/liabilitiesRealized and unrealized gains/(losses) included in regulatory assets/liabilities(5)9 4 11 (21)(10)Realized and unrealized gains/(losses) included in regulatory assets/liabilities(41)42 1 (5)9 4 
SettlementsSettlements0 4 4 (7)4 (3)Settlements3 1 4 — 4 4 
Ending balance at March 31Ending balance at March 31$(3)$(185)$(188)$17 $(241)$(224)Ending balance at March 31$(53)$(74)$(127)$(3)$(185)$(188)
Change in unrealized gains/(losses) related to assets/liabilities held at March 31Change in unrealized gains/(losses) related to assets/liabilities held at March 31$(3)$9 $6 $10 $(21)$(11)Change in unrealized gains/(losses) related to assets/liabilities held at March 31$(38)$42 $4 $(3)$9 $6 
All gains or losses related to our Level 3 derivative commodity contracts are expected to be recovered or returned through customer rates; therefore, there is no impact to either net income or other comprehensive income resulting from changes in the fair value of these instruments.
The following table describes the valuation techniques and significant unobservable inputs utilized for the fair value of our Level 3 power derivative contract assets and liabilities as of March 31, 2021,2022, and December 31, 2020:2021:
Fair Value
Weighted Average(b)
Fair Value
Weighted Average(b)
CommodityAssetsLiabilitiesValuation Technique(s)
Unobservable Input(a)
RangeCommodityAssetsLiabilitiesValuation Technique(s)
Unobservable Input(a)
Range
2021
Power(c)
$3$(191)Discounted cash flow
Average forward peak and off-peak pricing – forwards/swaps ($/MWh)
23 – 4029
20222022
Power(c)
$6$(133)Discounted cash flow
Average forward peak and off-peak pricing – forwards/swaps ($/MWh)
35 – 8251
Nodal basis ($/MWh)(5) – 0(1)Nodal basis ($/MWh)(16) – 0(3)
Trend rate (%)2 – 53Trend rate (%)(e)(1)
2020
Power(c)
$5$(201)Discounted cash flowAverage forward peak and off-peak pricing – forwards/swaps ($/MWh)23 – 3729
20212021
Power(d)
$13$(145)Discounted cash flowAverage forward peak and off-peak pricing – forwards/swaps ($/MWh)32 – 5540
Nodal basis ($/MWh)(6) – 0(2)Nodal basis ($/MWh)(14) – 0(2)
Trend rate (%)2 – 63Trend rate (%)(e)0
(a)Generally, significant increases (decreases) in these inputs in isolation would result in a significantly higher (lower) fair value measurement.
(b)Unobservable inputs were weighted by relative fair value.
(c)Valuations through 2031 use visible forward prices adjusted for nodal-to-hub basis differentials. Valuations beyond 2031 use a trend rate factor and are similarly adjusted for nodal-to-hub basis differentials.
(d)Valuations through 2029 use visible forward prices adjusted for nodal-to-hub basis differentials. Valuations beyond 2029 use a trend rate factor and are similarly adjusted for nodal-to-hub basis differentials.

(e)No meaningful range around weighted average.
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The following table sets forth the carrying amount and, by level within the fair value hierarchy, the fair value of financial assets and liabilities disclosed, but not recorded, at fair value as of March 31, 2021,2022, and December 31, 2020:2021:
Carrying
Amount		Fair ValueCarrying
Amount		Fair Value
Level 1Level 2Level 3TotalLevel 1Level 2Level 3Total
March 31, 2022
Ameren:Ameren:
Cash, cash equivalents, and restricted cashCash, cash equivalents, and restricted cash$154 $154 $— $— $154 
Investments in industrial development revenue bonds(a)
Investments in industrial development revenue bonds(a)
248 — 248 — 248 
Short-term debtShort-term debt1,101 — 1,101 — 1,101 
Long-term debt (including current portion)(a)
Long-term debt (including current portion)(a)
13,068 (b)— 12,615 526 (c)13,141 
Ameren Missouri:Ameren Missouri:
Cash, cash equivalents, and restricted cashCash, cash equivalents, and restricted cash$9 $9 $— $— $9 
Investments in industrial development revenue bonds(a)
Investments in industrial development revenue bonds(a)
248 — 248 — 248 
Short-term debtShort-term debt528 — 528 — 528 
Long-term debt (including current portion)(a)
Long-term debt (including current portion)(a)
5,619 (b)— 5,701 — 5,701 
Ameren Illinois:Ameren Illinois:
Cash, cash equivalents, and restricted cashCash, cash equivalents, and restricted cash$137 $137 $— $— $137 
Short-term debtShort-term debt107 — 107 — 107 
Long-term debt (including current portion)Long-term debt (including current portion)4,393 (b)— 4,457 — 4,457 
March 31, 2021December 31, 2021
Ameren:Ameren:Ameren:
Cash, cash equivalents, and restricted cashCash, cash equivalents, and restricted cash$172 $172 $0 $0 $172 Cash, cash equivalents, and restricted cash$155 $155 $— $— $155 
Investments in industrial development revenue bonds(a)
Investments in industrial development revenue bonds(a)
256 0 256 0 256 
Investments in industrial development revenue bonds(a)
248 — 248 — 248 
Short-term debtShort-term debt889 0 889 0 889 Short-term debt545 — 545 — 545 
Long-term debt (including current portion)(a)
Long-term debt (including current portion)(a)
11,535 (b)0 12,233 507 (c)12,740 
Long-term debt (including current portion)(a)
13,067 (b)— 13,930 591 (c)14,521 
Ameren Missouri:Ameren Missouri:Ameren Missouri:
Cash, cash equivalents, and restricted cashCash, cash equivalents, and restricted cash$12 $12 $0 $0 $12 Cash, cash equivalents, and restricted cash$8 $8 $— $— $8 
Investments in industrial development revenue bonds(a)
Investments in industrial development revenue bonds(a)
256 0 256 0 256 
Investments in industrial development revenue bonds(a)
248 — 248 — 248 
Short-term debtShort-term debt204 0 204 0 204 Short-term debt165 — 165 — 165 
Long-term debt (including current portion)(a)
Long-term debt (including current portion)(a)
5,104 (b)0 5,685 0 5,685 
Long-term debt (including current portion)(a)
5,619 (b)— 6,321 — 6,321 
Ameren Illinois:Ameren Illinois:Ameren Illinois:
Cash, cash equivalents, and restricted cashCash, cash equivalents, and restricted cash$149 $149 $0 $0 $149 Cash, cash equivalents, and restricted cash$133 $133 $— $— $133 
Short-term debtShort-term debt323 0 323 0 323 Short-term debt103 — 103 — 103 
Long-term debt (including current portion)Long-term debt (including current portion)3,947 (b)0 4,401 0 4,401 Long-term debt (including current portion)4,392 (b)— 4,971 — 4,971 
December 31, 2020
Ameren:
Cash, cash equivalents, and restricted cash$301 $301 $0 $0 $301 
Investments in industrial development revenue bonds(a)
256 0 256 0 256 
Short-term debt490 0 490 0 490 
Long-term debt (including current portion)(a)
11,086 (b)0 12,778 537 (c)13,315 
Ameren Missouri:
Cash, cash equivalents, and restricted cash$145 $145 $0 $0 $145 
Advances to money pool139 0 139 0 139 
Investments in industrial development revenue bonds(a)
256 0 256 0 256 
Long-term debt (including current portion)(a)
5,104 (b)0 6,160 0 6,160 
Ameren Illinois:
Cash, cash equivalents, and restricted cash$147 $147 $0 $0 $147 
Borrowings from money pool19 0 19 0 19 
Long-term debt (including current portion)3,946 (b)0 4,822 0 4,822 
(a)Ameren and Ameren Missouri have investments in industrial development revenue bonds, classified as held-to-maturity and recorded in “Other Assets,” that are equal to the finance obligations for the Peno Creek and Audrain CT energy centers. As of March 31, 2021,2022, and December 31, 2020,2021, the carrying amount of both the investments in industrial development revenue bonds and the finance obligations approximated fair value.
(b)Included unamortized debt issuance costs, which were excluded from the fair value measurement, of $86$94 million, $36$38 million, and $36$38 million for Ameren, Ameren Missouri, and Ameren Illinois, respectively, as of March 31, 2021.2022. Included unamortized debt issuance costs, which were excluded from the fair value measurement, of $84$94 million, $36$38 million, and $36$39 million for Ameren, Ameren Missouri, and Ameren Illinois, respectively, as of December 31, 2020.2021.
(c)The Level 3 fair value amount consists of ATXI’s senior unsecured notes.
NOTE 8 – RELATED-PARTY TRANSACTIONS
In the ordinary course of business, Ameren Missouri and Ameren Illinois have engaged in, and may in the future engage in, affiliate transactions. These transactions primarily consist of natural gas and power purchases and sales, services received or rendered, and borrowings and lendings. Transactions between Ameren’s subsidiaries are reported as affiliate transactions on their individual financial statements, but those transactions are eliminated in consolidation for Ameren’s consolidated financial statements. For a discussion of material related-party agreements and money pool arrangements, see Note 13 – Related-party Transactions and Note 4 – Short-term Debt and Liquidity under Part II, Item 8, of the Form 10-K. For information Ameren Missouri’s
Support Services Agreements
At both March 31, 2022 and Ameren Illinois’ capital contributions, see Note 4 – Long-term Debt and Equity Financings.
Electric Power Supply Agreement
In April 2021, Ameren Illinois conducted a procurement event, administered by the IPA, to purchase energy products. Ameren Missouri was among the winning suppliers in this event. As a result, in AprilDecember 31, 2021, Ameren Missouri and Ameren Illinois entered into an energy product agreement by whichhad long-term receivables included in “Other assets” from Ameren Missouri agreedServices of $77 million and $80 million, respectively, related to sellAmeren Services’ allocated portion of Ameren’s pension and Ameren Illinois agreed to purchase, 33,600 MWhs at an average price of $34 per MWh during the period of July 2022 through November 2022.postretirement benefit plans.
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Tax Allocation Agreement
See Note 1 – Summary of Significant Accounting Policies under Part II, Item 8, of the Form 10-K for a discussion of the tax allocation agreement. The following table presents the affiliate balances related to income taxes for Ameren Missouri and Ameren Illinois as of March 31, 2021,2022, and December 31, 2020:2021:
March 31, 2021December 31, 2020March 31, 2022December 31, 2021
Ameren MissouriAmeren IllinoisAmeren MissouriAmeren IllinoisAmeren MissouriAmeren IllinoisAmeren MissouriAmeren Illinois
Income taxes payable to parent(a)
Income taxes payable to parent(a)
$0 $6 $0 $6 
Income taxes payable to parent(a)
$— $42 $— $8 
Income taxes receivable from parent(b)
Income taxes receivable from parent(b)
14 18 9 15 
Income taxes receivable from parent(b)
33 — 27 18 
(a)Included in “Accounts payable – affiliates” on the balance sheet.
(b)Included in “Accounts receivable – affiliates” on the balance sheet.
Effects of Related-party Transactions on the Statement of Income
The following table presents the effectimpact on Ameren Missouri and Ameren Illinois of related-party transactions for the three months ended March 31, 20212022 and 2020:2021:
Three MonthsThree Months
AgreementAgreementIncome Statement
Line Item		Ameren
Missouri		Ameren
Illinois		AgreementIncome Statement
Line Item		Ameren
Missouri		Ameren
Illinois
Ameren Missouri power supplyAmeren Missouri power supplyOperating Revenues2021$2 $(a)Ameren Missouri power supplyOperating Revenues2022$4 $(a)
agreements with Ameren Illinoisagreements with Ameren Illinois20203 (a)agreements with Ameren Illinois20212 (a)
Ameren Missouri and Ameren IllinoisAmeren Missouri and Ameren IllinoisOperating Revenues2021$7 $(b)Ameren Missouri and Ameren IllinoisOperating Revenues2022$6 $(b)
rent and facility servicesrent and facility services20207 1 rent and facility services20217 (b)
Ameren Missouri and Ameren Illinois miscellaneousAmeren Missouri and Ameren Illinois miscellaneousOperating Revenues2021$(b)$(b)Ameren Missouri and Ameren Illinois miscellaneousOperating Revenues2022$(b)$1 
support services and services provided to ATXI2020(b)(b)
support services and other services provided to ATXIsupport services and other services provided to ATXI2021(b)(b)
Total Operating RevenuesTotal Operating Revenues2021$9 $(b)Total Operating Revenues2022$10 $1 
202010 1 20219 (b)
Ameren Illinois power supplyAmeren Illinois power supplyPurchased Power2021$(a)$2 Ameren Illinois power supplyPurchased Power2022$(a)$4 
agreements with Ameren Missouriagreements with Ameren Missouri2020(a)3 agreements with Ameren Missouri2021(a)2 
Ameren Missouri and Ameren IllinoisAmeren Missouri and Ameren IllinoisPurchased Power2021$1 $(b)Ameren Missouri and Ameren IllinoisPurchased Power2022$(b)$(b)
transmission services from ATXItransmission services from ATXI2020(a)(b)transmission services from ATXI20211 (b)
Total Purchased PowerTotal Purchased Power2021$1 $2 Total Purchased Power2022$(b)$4 
2020(a)3 20211 2 
Ameren Missouri and Ameren IllinoisAmeren Missouri and Ameren IllinoisOther Operations and Maintenance2021$(b)$1 Ameren Missouri and Ameren IllinoisOther Operations and Maintenance2022$(b)$1 
rent and facility servicesrent and facility services2020(b)1 rent and facility services2021(b)1 
Ameren Services support servicesAmeren Services support servicesOther Operations and Maintenance2021$35 $33 Ameren Services support servicesOther Operations and Maintenance2022$38 $35 
agreementagreement202035 33 agreement202135 33 
Total Other Operations andTotal Other Operations and2021$35 $34 Total Other Operations and2022$38 $36 
MaintenanceMaintenance202035 34 Maintenance202135 34 
Money pool borrowings (advances)Money pool borrowings (advances)(Interest Charges)/Other Income, Net2021$(b)$(b)Money pool borrowings (advances)(Interest Charges)/Other Income, Net2022$(b)$(b)
2020(b)(b)2021(b)(b)
(a)Not applicable.
(b)Amount less than $1 million.
NOTE 9 – COMMITMENTS AND CONTINGENCIES
We are involved in legal, tax, and regulatory proceedings before various courts, regulatory commissions, authorities, and governmental agencies with respect to matters that arise in the ordinary course of business, some of which involve substantial amounts of money. We believe that the final disposition of these proceedings, except as otherwise disclosed in the notes to our financial statements in this report and in the Form 10-K, will not have a material adverse effect on our results of operations, financial position, or liquidity.
Reference is made to Note 1 – Summary of Significant Accounting Policies, Note 2 – Rate and Regulatory Matters, Note 9 – Callaway Energy Center, Note 13 – Related-party Transactions, and Note 14 – Commitments and Contingencies under Part II, Item 8, of the Form 10-K. See also Note 1 – Summary of Significant Accounting Policies, Note 2 – Rate and Regulatory Matters, Note 8 – Related-party Transactions, and Note 10 – Callaway Energy Center of this report.

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Environmental Matters
Our electric and gas generation, transmission, and distribution and natural gas distribution and storage operations must comply with a variety of environmental statutorystatutes and regulatory requirements,regulations relating to the protection of the environment and human health and safety including permitting programs implemented via federal, state, and local authorities. Depending upon the specific business activity of the facility, suchSuch environmental laws address air emissions; discharges to water bodies; the storage, handling and disposal of hazardous substances and waste materials; siting and land use requirements; and potential ecological impacts. Complex and lengthy processes are required to obtain and renew approvals, permits, and licenses for new, existing, or modified facilities. Additionally, the use and handling of various chemicals or hazardous materials require release prevention plans and emergency response procedures. We employ dedicated personnel knowledgeable in environmental matters to oversee our business activities’ compliance with regulatory requirements.
Environmental regulations have a significant impact on the electric utility industry and compliance with these regulations could be costly for Ameren Missouri, which operates coal-fired power plants. Clean Air Act regulations that apply to the electric utility industry include the NSPS, the CSAPR, the MATS, and the National Ambient Air Quality Standards, which are subject to periodic review for certain pollutants. Collectively, these regulations cover a variety of pollutants, such as SO2, particulate matter, NOx, mercury, toxic metals and acid gases, and CO2 emissions from new power plants. Regulations implementing the Clean Water Act regulations applicable to coal-fired power plants govern both intake and discharges of water, and may require evaluation of the ecological and biological impact of our operations and could require modifications to water intake structures or more stringent limitations on wastewater discharges. Depending upon the scope of modifications ultimately required by state regulators, these capital expenditures could be significant. The management and disposal of coal ash is regulated under the Resource Conservation and Recovery Act and the CCR rule and requiresRule, which require the closure of our surface impoundments at Ameren Missouri’s coal-fired energy centers. The individual or combined effects of existing and new environmental regulations could result in significant capital expenditures, increased operating costs, or the closure or alteration of operations at some of Ameren Missouri’s energy centers. Ameren and Ameren Missouri expect that such compliance costs would be recoverable through rates, subject to MoPSC prudence review, but the timing of costs and their recovery could be subject to regulatory lag.
Ameren and Ameren Missouri estimate that they will need to make capital expenditures of $125 million to $175 million to $225 million from 20212022 through 20252026 in order to comply with existing environmental regulations. Additional environmental controls beyond 20252026 could be required. This estimate of capital expenditures includes ash pond closure and corrective action measures required by the CCR regulations,Rule and the effluent limitation guidelines applicable to steam electric generating units, and potential modifications to cooling water intake structures at existing power plants under Clean Water Act rules, and by effluent limitation guidelines applicable to steam electric generating units, all of which are discussed below. This estimate does not include capital expenditures that may be requiredIn addition to planned retirements of coal-fired energy centers as a result ofset forth in the 2020 IRP and as noted in the NSR and Clean Air Act litigation discussed below.below, Ameren Missouri’s current plan for compliance with existing air emission regulations includes the closure of the Venice Energy Center by 2030 as discussed below in Illinois Emission Standards, burning low-sulfur coal and installing new or optimizing existing air pollution control equipment. The actual amount of capital expenditures required to comply with existing environmental regulations may vary substantially from the above estimates because of uncertainty as to future permitting requirements made by state regulators and the EPA, potential revisions to regulatory obligations, and the cost of potential compliance strategies, among other things.
The following sections describe the more significant environmental laws and rules and environmental enforcement and remediation matters that affect or could affect our operations. The EPA has initiated an administrative review of several regulations and proposed amendments to regulations and guidelines, including to the effluent limitation guidelines and the CCR Rule,CSAPR, which could ultimately result in the revision of all or part of such rules. Additionally, Ameren Missouri’s wind generation facilities may be subject to operating restrictions to limit the impact on protected species. Seasonal nighttime curtailment began at the High Prairie Renewable Energy Center at the end of March 2022, but the extent and duration of the curtailment is unknown at this time as assessment of mitigation technologies is ongoing. Nighttime operating restrictions may be required during the critical biological season, which typically occurs from April through October. Ameren Missouri does not anticipate these operating curtailments to result in significant impacts on its results of operations, financial position, or liquidity.
Clean Air Act
Federal and state laws, including CSAPR, regulate emissions of SO2 and NOx through the reduction of emissions at their source and the use and retirement of emission allowances. CSAPR is implemented through a series of phases, and the second phase became effective in 2017. AdditionalIn April 2022, the EPA proposed revisions to the CSAPR and additional emission reduction requirements may apply in subsequent years. Ameren Missouri complies with current CSAPR requirements by minimizing emissions through the use of low-sulfur coal, operation of 2 scrubbers at its Sioux Energy Center, and optimization of other existing air pollution control equipment. Ameren Missouri could incur additional costs to lower its emissions at one or more of its energy centers to comply with additional CSAPR requirements in future years. These additional costs for compliance are expected to be recovered from customers through the FAC or higher base rates.
CO2 Emissions Standards
The EPA’s Affordable Clean Energy Rule repealed the Clean Power Plan and replaced it with a new rule that established emission guidelines for states to follow in developing plans to limit CO2 emissions and identified certain efficiency measures as the best system of
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emission reduction for coal-fired electric generating units. In January 2021, the United States Court of Appeals for the District of Columbia Circuit vacated the Affordable Clean Energy Rule, and ruled that the EPA had the discretion to consider emission reduction measures that include efficiency measures and generation shifting to lower carbon emissions. The United States Supreme Court has extendedagreed to review the deadline for seeking review,court of appeals’ ruling and oral arguments occurred in February 2022, with a decision on whetherexpected by mid-2022. A decision by the United States Supreme Court will reviewcould impact the circuit court's ruling could occur in fall 2021. RegardlessEPA’s development of the outcome of those legal challenges, the EPA is likely to develop new regulations to address carbon emissions from coalcoal- and natural gasgas-fired electric generating units. At this time, Ameren Missouri cannot predict the outcome of the legal challenges to the vacated Affordable Clean
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Energy Rulechallenge or future rulemakings. As such, theany impact on the results of operations, financial position, and liquidity of Ameren and Ameren Missouri is uncertain.
NSR and Clean Air Act Litigation
In January 2011, the United States Department of Justice, on behalf of the EPA, filed a complaint against Ameren Missouri in the United States District Court for the Eastern District of Missouri alleging that in performing projects at its coal-fired Rush Island Energy Center in 2007 and 2010, Ameren Missouri violated provisions of the Clean Air Act and Missouri law. In January 2017, the district court issued a liability ruling against Ameren Missouri and, in September 2019, entered a finalremedy order that required Ameren Missouri to install a flue gas desulfurization system at the Rush Island Energy Center and a dry sorbent injection system at the Labadie Energy Center. There were no finesAmeren Missouri appealed both the liability and remedy orders and, in the order as the Department of Justice previously dismissed claims for penalties. The district court stayed implementation of the majority of the requirements of its order while the case is under appeal toAugust 2021, the United States Court of Appeals for the Eighth Circuit.Circuit issued a decision that affirmed the liability ruling and the district court’s remedy order as it related to the installation of a flue gas desulfurization system at the Rush Island Energy Center, but reversed the order as it related to the installation of a dry sorbent injection system at the Labadie Energy Center. In December 2020,November 2021, the court of appeals heard oral arguments presentedissued an order denying requests for consideration previously sought by both Ameren Missouri and the parties.United States Department of Justice.
Based on its assessment of available legal, operational, and regulatory alternatives, Ameren Missouri has determined not to further appeal the court rulings and, in December 2021, filed a motion with the district court to modify the remedy order to allow the retirement of the Rush Island Energy Center in advance of its previously expected useful life in lieu of installing a flue gas desulfurization system. The district court is under no deadline to issue a ruling revising the remedy order. In January 2022, the MISO completed a preliminary informational assessment regarding potential impacts of the retirement to the regional electric power system, which indicated transmission upgrades and voltage support would be needed in advance of the retirement of the Rush Island Energy Center to address reliability concerns. In February 2022, Ameren Missouri formally notified the MISO of its intent to retire the Rush Island Energy Center and requested the MISO to perform a final reliability assessment, which is expected to be completed in May 2022. The MISO must also separately approve the specific upgrades and transmission support required to address reliability concerns noted in the final assessment. Additionally, the MISO will determine whether reliability concerns require the Rush Island Energy Center to be classified as a system support resource, which should continue operating until the completion of to-be-specified transmission upgrades. If the Rush Island Energy Center were identified as a system support resource, an agreement detailing the manner of and time for continued operation would be filed with the FERC for approval. The district court has the authority to determine the retirement date and operating parameters for the Rush Island Energy Center and is not bound by the MISO determination or FERC’s approval. Related to this casematter, in February 2022, the MoPSC issued an order directing the MoPSC staff to review the planned accelerated retirement of the Rush Island Energy Center. See Note 2 – Rate and Regulatory Matters for additional information.
In connection with the planned accelerated retirement of the Rush Island Energy Center, Ameren Missouri expects to seek approval from the MoPSC to finance the costs associated with the retirement, including the remaining unrecovered net plant balance associated with the facility, through the issuance of securitized utility tariff bonds pursuant to the Missouri securitization statute that became effective in August 2021. As of March 31, 2022, the Rush Island Energy Center had a net plant balance of approximately $0.6 billion included in plant to be abandoned, net, within “Property, Plant, and Equipment, Net” and a rate base of approximately $0.4 billion. See Note 1 – Summary of Significant Accounting Policies under Part II, Item 8, of the Form 10-K for additional information regarding plant to be abandoned, net. In addition, Ameren Missouri expects to file an update to the 2020 IRP with the MoPSC in June 2022 to reflect the planned acceleration of the retirement of the Rush Island Energy Center from 2039, the retirement year for the facility as reflected in the 2020 IRP and reflected in depreciation rates approved by the December 2021 MoPSC electric rate order.
Ameren Missouri is unable to predict the ultimate resolution of this matter. Ameren Missouri expects a ruling by the court of appeals during 2021.
The ultimatematter; however, such resolution of this matter could have a material adverse effect on the results of operations, financial position, and liquidity of Ameren and Ameren Missouri. Among other things and subject to economic and regulatory considerations, resolution of this matter could result in increased capital expenditures for the installation of air pollution control equipment, as well as increased operations and maintenance expenses. Based upon engineering studies from October 2019, capital expenditures to comply with the district court’s order for installation of a flue gas desulfurization system at the Rush Island Energy Center are estimated at approximately $1 billion. Further, the flue gas desulfurization system would result in additional operation and maintenance expenses of $30 million to $50 million annually for the life of the energy center. Engineering studies required to develop estimated capital expenditures and estimated additional operation and maintenance expenses for the Labadie Energy Center to comply with the district court’s order will not be undertaken while the case is under appeal. As a result of the district court’s stay, Ameren Missouri does not expect to make significant capital expenditures or incur operations and maintenance expenses related to the district court’s order while the case is under appeal.
Clean Water Act
The EPA’s regulations implementing Section 316(b) Rule requiresof the Clean Water Act require power plant operators to evaluate cooling water intake structures and identify measures for reducing the number of aquatic organisms impinged on a power plant’s cooling water intake screens or entrained through the plant’s cooling water system. All of Ameren Missouri’s coal-fired and nuclear energy centers are subject to the cooling water intake structures rule. Requirements of the rule are implemented by state regulators through the permit renewal process of each energy center’spower plant’s water discharge permit, which is expected to be completed by 2023.2023 for Ameren Missouri.
In 2015, the EPA issued a rule to revise the effluent limitation guidelines applicable to steam electric generating units. These guidelines established national standards for water discharges, prohibitsprohibit effluent discharges of certain waste streams, and imposesimpose more stringent
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limitations on certain water discharges from power plants. To meet the requirements of the guidelines, Ameren Missouri installed dry ash handling systems and in 2020 completed construction of wastewater treatment facilities at 3 of its 4 coal-fired energy centers. The Meramec Energy Center is scheduled to close permanentlyretire in 2022 and, as a result, does not require new wastewater and dry ash handling systems. Estimated capital expenditures to complete these projects are included in the CCR management compliance plan, discussed below.
CCR Management
The EPA’s CCR ruleRule establishes requirements for the management and disposal of CCR from coal-fired power plants and will result in the closure of certain surface impoundments at Ameren Missouri’s energy centers. Ameren Missouri is incompleted the processclosure of closingall surface impoundments at all of its facilities,Labadie and is scheduledRush Island energy centers in 2021, and has made significant progress by closing several impoundments at its Sioux and Meramec energy centers. Ameren Missouri plans to complete the lastclosures of such closuresthe remaining surface impoundments as required by the CCR Rule in 2023. TheIn January 2022, Ameren Missouri received notice of a proposed determination by the EPA that it has issued a series of revisionsrejected Ameren Missouri’s requests to extend the timeline for operating certain impoundments located at the Sioux and Meramec energy centers. Pursuant to the terms of the proposed determination, compliance with the CCR rule; however, noneRule’s requirements for closure of those revisionsthe impoundments would be required 135 days after the EPA issues a final determination, which Ameren Missouri expects to be issued in the spring of 2022. If Ameren Missouri was no longer able to use the surface impoundments at the Sioux or Meramec energy centers, Ameren Missouri would not be able to operate the energy centers unless an alternative for handling the CCR material was available. Ameren Missouri will retire the Meramec Energy Center in 2022, and construction is expectedunderway to materially impact our closure schedule. complete a CCR Rule-compliant impoundment at the Sioux Energy Center to allow for continued operations. Additionally, Ameren Missouri is seeking a reliability determination from the MISO, which, if granted and accepted by the EPA, would extend the deadline to comply with the requirement to close the surface impoundments and allow the energy centers to operate. Ameren expects the MISO determination to be completed in June 2022. Ameren Missouri does not expect that this matter will have a material adverse effect on its results of operations, financial position, or liquidity.
Ameren and Ameren Missouri have AROs of $103$79 million recorded on their respective balance sheets as of March 31, 2021,2022, associated with CCR storage facilities. Ameren Missouri estimates it will need to make capital expenditures of $75$60 million to $100$80 million from 20212022 through 20252026 to implement its CCR management compliance plan, which includes installation of groundwater monitoring equipment and watergroundwater treatment facilities.
Remediation
The Ameren Companies are involved in a number of remediation actions to clean up sites impacted by the use or disposal of materials containing hazardous substances. Federal and state laws can require responsible parties to fund remediation regardless of their degree of fault, the legality of original disposal, or the ownership of a disposal site.
As of March 31, 2021,2022, Ameren Illinois has remediated the majority of the 44 former MGP sites in Illinois and could substantially conclude remediation efforts at the remaining sites by 2023. The ICC allows Ameren Illinois to recover such remediation and related litigation costs from its electric and natural gas utility customers through environmental cost riders that are subject to annual prudence reviewreviews by the ICC. As
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of March 31, 2021,2022, Ameren Illinois estimated the remaining obligation related to these former MGP sites at $90$68 million to $150$125 million. Ameren and Ameren Illinois recorded a liability of $90$68 million to represent the estimated minimum obligation for these sites, as no other amount within the range was a better estimate.
The scope of the remediation activities at these former MGP sites may increase as remediation efforts continue. Considerable uncertainty remains in these estimates because many site-specific factors can influence the ultimate actual costs, including unanticipated underground structures, the degree to which groundwater is encountered, regulatory changes, local ordinances, and site accessibility. The actual costs and timing of completion may vary substantially from these estimates.
Our operations or those of our predecessor companies involve the use of, disposal of, and, in appropriate circumstances, the cleanup of substances regulated under environmental laws. We are unable to determine whether such historical practices will result in future environmental commitments or will affect our results of operations, financial position, or liquidity.
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Illinois Emission Standards
The IETL established emission standards that became effective in September 2021. Ameren Missouri's natural gas-fired energy centers in Illinois are subject to limits on emissions, including CO2 and NOx, equal to their unit-specific average emissions from 2018 through 2020, for any rolling twelve-month period beginning October 1, 2021, through 2029. Further reductions to emissions limits will become effective between 2030 and 2040, which could limit the operations of Ameren Missouri's 5 natural gas-fired energy centers located in the state of Illinois, and will result in the closure of the Venice Energy Center by 2030. These energy centers are utilized to support peak loads. Subject to conditions in the IETL, these energy centers may be allowed to exceed the emissions limits in order to maintain reliability of electric utility service as necessary. Ameren Missouri is reviewing the emission standards and the effect they may have on its generation strategy, including any increases in capital expenditures or operating costs, and changes to the useful life of the Venice Energy Center. Ameren Missouri expects to file an update to the 2020 IRP with the MoPSC in June 2022 to reflect, among other things, the impact of these new emissions standards.
NOTE 10 – CALLAWAY ENERGY CENTER
See Note 9 – Callaway Energy Center under Part II, Item 8, of the Form 10-K for information regarding spent nuclear fuel recovery, recovery of decommissioning costs, and the nuclear decommissioning trust fund. The fair value of the trust fund for Ameren Missouri’s Callaway Energy Center is reported as “Nuclear decommissioning trust fund” in Ameren’s and Ameren Missouri’s balance sheets. This amount is legally restricted and may be used only to fund the costs of nuclear decommissioning. Changes in the fair value of the trust fund are recorded as an increase or decrease to the nuclear decommissioning trust fund, with an offsetting adjustment to the related regulatory liability. Ameren and Ameren Missouri have recorded an ARO for the Callaway Energy Center decommissioning costs at fair value, which represents the present value of estimated future cash outflows. Annual decommissioning costs of $7 million are included in the costs used to establish electric rates for Ameren Missouri’s customers. Every three years, the MoPSC requires Ameren Missouri to file an updated cost study and funding analysis for decommissioning its Callaway Energy Center. An updated cost study and funding analysis was filed with the MoPSC in November 2020 and reflected within the ARO. In February 2021, the MoPSC approved no change in electric rates for decommissioning costs based on Ameren Missouri’s updated cost study funding analysis. See Note 13 – Supplemental Information for more information on Ameren Missouri’s AROs.
Maintenance Outage
During its return to full power after the completion of the last refueling and maintenance outage in late December 2020, theSee Note 9 – Callaway Energy Center experiencedunder Part II, Item 8, of the Form 10-K for information regarding a maintenance outage from a non-nuclear operating issue related to its generator. A thorough investigation of this matter was conducted. Work continues to replace certain key components of the Callaway Energy Center’s generator in order to return the energy center to service. Ameren Missouri expects generator repairs of approximately $65 million, which are expected to be largely capital expenditures. Due to the long lead time for the manufacture, repair,late December 2020 and installation of the components, the energy center is expected tosubsequent return to service on August 4, 2021, along with the related insurance claims. As of March 31, 2022, a $26 million insurance receivable was included in July 2021.“Miscellaneous accounts receivable” on Ameren’s and Ameren Missouri’s consolidated balance sheets related to lost sales insurance claims and capital expenditures. In April 2021,2022, Ameren Missouri’s insurance claims were accepted byMissouri received $22 million from NEIL which are expected to cover a significant portion of the capital expenditures and replacement power costs. Replacement power costs of up to $4.5 million weekly are covered by insurance after March 17, 2021. Insurance recoveries related to replacement power costs will be reflected in electric operating revenues and included in net energy costs under the FAC. Insurance recoveries related to the capital expenditures will be reflected as a reduction to property, plant, and equipment. Ameren Missouri continues to review other legal remedies available.lost sales insurance claims.
Insurance
The following table presents insurance coverage at Ameren Missouri’s Callaway Energy Center at April 1, 2021:2022:
Type and Source of CoverageType and Source of CoverageMost Recent
Renewal Date		Maximum CoveragesMaximum Assessments
for Single Incidents		Type and Source of CoverageMost Recent
Renewal Date		Maximum CoveragesMaximum Assessments
for Single Incidents
Public liability and nuclear worker liability:Public liability and nuclear worker liability:Public liability and nuclear worker liability:
American Nuclear InsurersAmerican Nuclear InsurersJanuary 1, 2021$450 $0 American Nuclear InsurersJanuary 1, 2022$450 $— 
Pool participationPool participation(a)13,210 
(a) 
138 
(b) 
Pool participation(a)13,073 
(a) 
138 
(b) 
$13,660 
(c) 
$138 $13,523 
(c) 
$138 
Property damage:Property damage:Property damage:
NEIL and EMANINEIL and EMANIApril 1, 2021$3,200 (d)$25 
(e) 
NEIL and EMANIApril 1, 2022$3,200 (d)$26 
(e) 
Replacement power:
Accidental outage:Accidental outage:
NEILNEILApril 1, 2021$490 
(f) 
$7 
(e) 
NEILApril 1, 2022$490 
(f) 
$7 
(e) 
(a)Provided through mandatory participation in an industrywide retrospective premium assessment program. The maximum coverage available is dependent on the number of United States commercial reactors participating in the program.
(b)Retrospective premium under the Price-Anderson Act. This is subject to retrospective assessment with respect to a covered loss in excess of $450 million in the event of an incident at any licensed United States commercial reactor, payable at $21 million per year.
(c)Limit of liability for each incident under the Price-Anderson liability provisions of the Atomic Energy Act of 1954, as amended. This limit is subject to change to account for the effects of inflation and changes in the number of licensed power reactors.
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(d)NEIL provides $2.7 billion in property damage, stabilization, decontamination, and premature decommissioning insurance for radiation events and $2.3 billion in property damage insurance for nonradiation events. EMANI provides $490 million in property damage insurance for both radiation and nonradiation events.
(e)All NEIL-insured plants could be subject to assessments should losses exceed the accumulated funds from NEIL.
(f)Provides replacement power costAccidental outage insurance provides for lost sales in the event of a prolonged accidental outage. Weekly indemnity up to $4.5 million for 52 weeks, which commences after the first 12 weeks of an outage, plus up to $3.6 million per week for a minimum of 71 weeks thereafter for a total not exceeding the policy limit of $490 million. Nonradiation events are limited to $328 million.
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The Price-Anderson Act is a federal law that limits the liability for claims from an incident involving any licensed United States commercial nuclear energy center. The limit is based on the number of licensed reactors. The limit of liability and the maximum potential annual payments are adjusted at least every five years for inflation to reflect changes in the Consumer Price Index. The most recent five-year inflationary adjustment became effective in November 2018. Owners of a nuclear reactor cover this exposure through a combination of private insurance and mandatory participation in a financial protection pool, as established by the Price-Anderson Act.
Losses resulting from terrorist attacks on nuclear facilities insured by NEIL are subject to industrywide aggregates, such that terrorist acts against one or more commercial nuclear power plants within a stated time period would be treated as a single event, and the owners of the nuclear power plants would share the limit of liability. NEIL policies have an aggregate limit of $3.2 billion within a 12-month period for radiation events, or $1.8 billion for events not involving radiation contamination, resulting from terrorist attacks. The EMANI policies are not subject to industrywide aggregates in the event of terrorist attacks on nuclear facilities.
If losses from a nuclear incident at the Callaway Energy Center exceed the limits of, or are not covered by insurance, or if coverage is unavailable, Ameren Missouri is at risk for any uninsured losses. If a serious nuclear incident were to occur, it could have a material adverse effect on Ameren’s and Ameren Missouri’s results of operations, financial position, or liquidity.
NOTE 11 – RETIREMENT BENEFITS
The following table presents the components of the net periodic benefit cost (income) incurred for Ameren’s pension and postretirement benefit plans for the three months ended March 31, 20212022 and 2020:2021:
Pension BenefitsPostretirement BenefitsPension BenefitsPostretirement Benefits
Three MonthsThree MonthsThree MonthsThree Months
20212020202120202022202120222021
Service cost(a)
Service cost(a)
$33 $27 $6 $4 
Service cost(a)
$33 $33 $5 $6 
Non-service cost components:Non-service cost components:Non-service cost components:
Interest costInterest cost38 43 8 10 Interest cost40 38 8 8 
Expected return on plan assetsExpected return on plan assets(75)(73)(20)(20)Expected return on plan assets(80)(75)(21)(20)
Amortization of:Amortization of:Amortization of:
Prior service benefitPrior service benefit0 0 (1)(1)Prior service benefit— — (1)(1)
Actuarial loss (gain)Actuarial loss (gain)17 14 (1)(2)Actuarial loss (gain)6 17 (4)(1)
Total non-service cost components(b)
Total non-service cost components(b)
$(20)$(16)$(14)$(13)
Total non-service cost components(b)
$(34)$(20)$(18)$(14)
Net periodic benefit cost (income)Net periodic benefit cost (income)$13 $11 $(8)$(9)Net periodic benefit cost (income)$(1)$13 $(13)$(8)
(a)Service cost, net of capitalization, is reflected in “Operating Expenses – Other operations and maintenance” on Ameren’s statement of income.
(b)Non-service cost components are reflected in “Other Income, Net” on Ameren’s statement of income. See Note 5 – Other Income, Net, for additional information.
Ameren Missouri and Ameren Illinois are responsible for their respective share of Ameren’s pension and other postretirement costs. The following table presents the respective share of net periodic pension and other postretirement benefit costs (income) incurred for the three months ended March 31, 20212022 and 2020:2021:
Pension BenefitsPostretirement BenefitsPension BenefitsPostretirement Benefits
Three MonthsThree MonthsThree MonthsThree Months
20212020202120202022202120222021
Ameren Missouri(a)
Ameren Missouri(a)
$6 $4 $(1)$(1)
Ameren Missouri(a)
$(1)$6 $(3)$(1)
Ameren IllinoisAmeren Illinois8 7 (7)(8)Ameren Illinois1 8 (10)(7)
OtherOther(1)0 0 0 Other(1)(1)— — 
Ameren(a)
Ameren(a)
$13 $11 $(8)$(9)
Ameren(a)
$(1)$13 $(13)$(8)
(a)Does not include the impact of the regulatory tracking mechanism for the difference between the level of pension and postretirement benefit costs incurred by Ameren Missouri under GAAP and the level of such costs included in rates.
Funding
Based on its assumptions at March 31, 2021, its investment performance in 2021, and its pension funding policy, the estimated aggregate contributions through 2025 has not changed from the $60 million expected aggregate contributions at December 31, 2020.
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NOTE 12 – INCOME TAXES
The following table presents a reconciliation of the federal statutory corporate income tax rate to the effective income tax rate for the three months ended March 31, 20212022 and 2020:2021:
AmerenAmeren MissouriAmeren Illinois
202220212022202120222021
Three MonthsThree Months
Federal statutory corporate income tax rateFederal statutory corporate income tax rate21 %21 %21 %21 %21 %21 %
Increases (decreases) from:Increases (decreases) from:
Amortization of deferred investment tax creditAmortization of deferred investment tax credit— (1)(1)(1)— — 
Amortization of excess deferred taxes(a)
Amortization of excess deferred taxes(a)
(8)(9)

(16)(17)

(2)(2)
Depreciation differencesDepreciation differences— — — 1 — (1)
Renewable and other tax credits(b)
Renewable and other tax credits(b)
(5)(6)(11)(11)— — 
State taxState tax5 6 3 3 7 7 
Stock-based compensationStock-based compensation(1)(1)— — — — 
Effective income tax rateEffective income tax rate12 %10 %(4)%(4)%26 %25 %
AmerenAmeren MissouriAmeren Illinois
202120202021202020212020
Three Months
Federal statutory corporate income tax rate:21%21%21%21%21%21%
Increases (decreases) from:
Amortization of deferred investment tax credit(1)0(1)(1)00
Amortization of excess deferred taxes(9)(9)

(17)(15)

(2)(3)
Depreciation differences0(1)10(1)(1)
Renewable and other tax credits(6)0(11)000
State tax663377
Stock-based compensation(1)(5)0000
Effective income tax rate10%12%(4)%8%25%24%
(a)Reflects the amortization of amounts resulting from the revaluation of deferred income taxes subject to regulatory ratemaking, which are being refunded to customers. Deferred income taxes are revalued when federal or state income tax rates change, and the offset to the revaluation of deferred income taxes subject to regulatory ratemaking is recorded to a regulatory asset or liability.
(b)Includes credits associated with the High Prairie and Atchison renewable energy centers. Ameren Missouri placed the High Prairie renewable energy center in service in December 2020. Additionally, Ameren Missouri placed in service the wind turbines at its Atchison renewable energy center throughout the first half of 2021. The benefit of the credits associated with Missouri renewable energy standard compliance is refunded to customers through the RESRAM.
NOTE 13 – SUPPLEMENTAL INFORMATION
Cash, Cash Equivalents, and Restricted Cash
The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the balance sheets and the statements of cash flows as ofat March 31, 2021,2022, and December 31, 2020:2021:
March 31, 2021December 31, 2020March 31, 2022December 31, 2021
AmerenAmeren
Missouri		Ameren
Illinois		AmerenAmeren
Missouri		Ameren
Illinois		AmerenAmeren
Missouri		Ameren
Illinois		AmerenAmeren
Missouri		Ameren
Illinois
Cash and cash equivalents$6 $1 $0 $139 $136 $0 
Restricted cash134 — 125 17 — 6 
“Cash and cash equivalents”“Cash and cash equivalents”$7 $1 $— $8 $— $— 
Restricted cash included in “Other current assets”Restricted cash included in “Other current assets”— 3 — — 5 — Restricted cash included in “Other current assets”10 3 5 16 4 6 
Restricted cash included in “Other assets”Restricted cash included in “Other assets”24 0 24 141 0 141 Restricted cash included in “Other assets”132 — 132 127 — 127 
Restricted cash included in “Nuclear decommissioning trust fund”Restricted cash included in “Nuclear decommissioning trust fund”8 8 0 4 4 0 Restricted cash included in “Nuclear decommissioning trust fund”5 5 — 4 4 — 
Total cash, cash equivalents, and restricted cashTotal cash, cash equivalents, and restricted cash$172 $12 $149 $301 $145 $147 Total cash, cash equivalents, and restricted cash$154 $9 $137 $155 $8 $133 
Restricted cash included in “Other current assets” primarily represents funds held by an irrevocable Voluntary Employee Beneficiary Association (VEBA) trust, which provides health care benefits for active employees. As of December 31, 2020, restrictedRestricted cash included in “Other assets” on Ameren’s and Ameren Illinois’ balance sheets primarily represents amounts collected under a cost recovery rider restricted for use in the procurement of renewable energy credits and amounts in a trust fund restricted for the use of funding certain asbestos-related claims. As of March 31, 2021, the amounts collected under a cost recovery rider restricted for use in Ameren Illinois’ procurement of renewable energy credits was reclassified to current as the amount is expected to be refunded to customers within a year.
Accounts Receivable
“Accounts receivable – trade” on Ameren’s and Ameren Illinois’ balance sheets include certain receivables purchased at a discount from alternative retail electric suppliers that elect to participate in the utility consolidated billing program. At March 31, 2021,2022, and December 31, 2020,2021, “Other current liabilities” on Ameren’s and Ameren Illinois’ balance sheets included payables for purchased receivables of $31$29 million and $28$27 million, respectively.
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The following table provides a reconciliation of the beginning and ending amount of the allowance for doubtful accounts for the three months ended March 31, 20212022 and 2020:2021:
Three MonthsThree Months
2021202020222021
Ameren:Ameren:Ameren:
Beginning of periodBeginning of period$50 $17 Beginning of period$29 $50 
Bad debt expenseBad debt expense4 3 Bad debt expense4 4 
Net write-offsNet write-offs(7)(1)Net write-offs(5)(7)
End of periodEnd of period$47 $19 End of period$28 $47 
Ameren Missouri:Ameren Missouri:Ameren Missouri:
Beginning of periodBeginning of period$16 $7 Beginning of period$13 $16 
Bad debt expenseBad debt expense1 2 Bad debt expense1 1 
Net write-offsNet write-offs(2)(1)Net write-offs(3)(2)
End of periodEnd of period$15 $8 End of period$11 $15 
Ameren Illinois:(a)
Ameren Illinois:(a)
Ameren Illinois:(a)
Beginning of Period$34 $10 
Beginning of periodBeginning of period$16 $34 
Bad debt expenseBad debt expense3 1 Bad debt expense3 3 
Net write-offsNet write-offs(5)0 Net write-offs(2)(5)
End of Period$32 $11 
End of periodEnd of period$17 $32 
(a)Ameren Illinois has rate-adjustment mechanisms that allow it to recover the difference between its actual net bad debt write-offs under GAAP, including those associated with receivables purchased from alternative retail electric suppliers, and the amount of net bad debt write-offs included in its base rates.
Net write-offs increasedSupplemental Cash Flow Information
Capital expenditures at Ameren and Ameren Missouri included wind generation expenditures of an immaterial amount for the three months ended March 31, 2021, compared with2022, and $193 million for the year-ago period, due to the resumption of disconnection activities for nonpayment. See Note 2 – Rate and Regulatory Matters for additional information.
Supplemental Cash Flow Informationthree months ended March 31, 2021.
The following table provides noncash financing and investing activity excluded from the statements of cash flows for the three months ended March 31, 20212022 and 2020:2021:
March 31, 2021March 31, 2020March 31, 2022March 31, 2021
AmerenAmeren
Missouri		Ameren
Illinois		AmerenAmeren
Missouri		Ameren
Illinois		AmerenAmeren
Missouri		Ameren
Illinois		AmerenAmeren
Missouri		Ameren
Illinois
InvestingInvesting
Accrued capital expendituresAccrued capital expenditures$345 $194 $147 $271 $141 $139 
Accrued capital expenditures, including wind generation expenditures$271 $141 $139 $235 $97 $127 
Accrued nuclear fuel expenditures0 0 0 7 7 0 
Net realized and unrealized gain (loss) – nuclear decommissioning trust fund
22 22 0 (111)(111)0 
Net realized and unrealized gain/(loss) – nuclear decommissioning trust fundNet realized and unrealized gain/(loss) – nuclear decommissioning trust fund(71)(71)— 22 22 — 
FinancingFinancingFinancing
Issuance of common stock for stock-based compensationIssuance of common stock for stock-based compensation33 0 0 38 0 0 Issuance of common stock for stock-based compensation$31 $— $— $33 $— $— 
Issuance of common stock under the DRPlusIssuance of common stock under the DRPlus8 — — — — — 
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Asset Retirement Obligations
The following table provides a reconciliation of the beginning and ending carrying amount of AROs for the three months ended March 31, 2021:2022:
Ameren
Missouri		Ameren
Illinois		Ameren
Balance at December 31, 2020$751 

$5 (a)$756 (b)
Liabilities incurred (c)
10 0 10 
Liabilities settled(3)0 (3)
Accretion8 (d)0 

8 (d)
Change in estimates(7)(e)0 (7)(e)
Balance at March 31, 2021$759 

$5 (a)$764 (b)
Ameren
Missouri		Ameren
Illinois		Ameren
Balance at December 31, 2021$760 (a)$4 (b)$764 (a)
Accretion8 (c)— 

8 (c)
Change in estimates4 (d)— 4 (d)
Balance at March 31, 2022$772 (a)$4 (b)$776 (a)
(a)Balance included $7 million in “Other current liabilities” on the balance sheet as of both March 31, 2022, and December 31, 2021.
(b)Included in “Other deferred credits and liabilities” on the balance sheet.
(b)Balance included $59 million and $60 million in “Other current liabilities” on the balance sheet as of March 31, 2021, and December 31, 2020, respectively.
(c)In the first quarter of 2021, Ameren Missouri recorded an ARO related to the decommissioning for the Atchison Renewable Energy Center.
(d)Accretion expense attributable to Ameren Missouri was recorded as a decrease to regulatory liabilities.
(e)(d)Ameren Missouri changed its fair value estimate primarily due to a decreasethe change in useful life of the cost estimate for closure of certain CCR storage facilities.Sioux Energy Center, as reflected in depreciation rates approved by the December 2021 electric rate order, which became effective in 2022.
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Stock-based Compensation
On January 1, 2021,In the first quarter of 2022, Ameren granted 293,058267,849 performance share units with a grant date fair value of $25 million and 125,562122,882 restricted share units with a grant date fair value of $10$11 million. Awards vest approximately 38 months3 years after the grant date or on a pro-rata basis upon death or eligible retirement. The performance share units vest based on the achievement of certain specified market performance measures (251,177(229,566 performance share units) or based on the achievement of renewable generation andclean energy storage installationtransition targets (41,881(38,283 performance share units). The exact number of shares issued pursuant to a performance share unit varies from 0% to 200% of the target award, depending on actual company performance relative to the performance goals.
For the three months ended March 31, 20212022 and 2020,2021, excess tax benefits associated with the settlement of stock-based compensation awards reduced income tax expense by $5 million and $8 million, respectively.in both periods.
Deferred Compensation
As of bothAt March 31, 2021,2022, and December 31, 2020,2021, the present value of benefits to be paid for deferred compensation obligations was $90$91 million in both periods, which was primarily reflected in “Other deferred credits and liabilities” on Ameren's consolidated balance sheet.
Operating Revenues
As of March 31, 20212022 and 2020,2021, our remaining performance obligations for contracts with a term greater than one year were immaterial. The Ameren Companies elected not to disclose the aggregate amount of the transaction price allocated to the performance obligations that are unsatisfied as of the end of the reporting period for contracts with an initial expected term of one year or less.
See Note 14 – Segment Information for disaggregated revenue information.
Excise Taxes
Ameren Missouri and Ameren Illinois collect from their customers excise taxes, including municipal and state excise taxes and gross receipts taxes that are levied on the sale or distribution of natural gas and electricity. The following table presents the excise taxes recorded on a gross basis in “Operating Revenues – Electric,” “Operating Revenues – Natural gas” and “Operating Expenses – Taxes other than income taxes” on the statements of income for the three months ended March 31, 20212022 and 2020:2021:
Three MonthsThree Months
2021202020222021
Ameren MissouriAmeren Missouri$31 $30 Ameren Missouri$34 $31 
Ameren IllinoisAmeren Illinois39 35 Ameren Illinois45 39 
AmerenAmeren$70 $65 Ameren$79 $70 
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Earnings per Share
The following table reconciles the basic weighted-average number of common shares outstanding to the diluted weighted-average number of common shares outstanding for the three months ended March 31, 20212022 and 2020:2021:
Three MonthsThree Months
2021202020222021
Weighted-average Common Shares Outstanding – BasicWeighted-average Common Shares Outstanding – Basic254.4 246.4 Weighted-average Common Shares Outstanding – Basic257.9 254.4 
Assumed settlement of performance share units and restricted stock unitsAssumed settlement of performance share units and restricted stock units1.5 1.1 Assumed settlement of performance share units and restricted stock units1.1 1.5 
Dilutive effect of forward sale agreement0 0.6 
Weighted-average Common Shares Outstanding – Diluted(a)
Weighted-average Common Shares Outstanding – Diluted(a)
255.9 248.1 
Weighted-average Common Shares Outstanding – Diluted(a)
259.0 255.9 
(a)There were 0 potentially dilutivewas an immaterial number of anti-dilutive securities excluded from the earnings per diluted share calculations for the three months ended March 31, 2021 and 2020.2022. There were no anti-dilutive securities excluded from the earnings per diluted share calculations for the three months ended March 31, 2021.
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NOTE 14 – SEGMENT INFORMATION
The following tables present revenues, net income (loss) attributable to common shareholders, and capital expenditures by segment at Ameren and Ameren Illinois for the three months ended March 31, 20212022 and 2020.2021. Ameren, Ameren Missouri, and Ameren Illinois management review segment capital expenditure information rather than any individual or total asset amount. For additional information about our segments, see Note 16 – Segment Information under Part II, Item 8, of the Form 10-K.
Ameren
Ameren MissouriAmeren Illinois Electric DistributionAmeren Illinois Natural GasAmeren TransmissionOtherIntersegment EliminationsAmerenAmeren MissouriAmeren Illinois Electric DistributionAmeren Illinois Natural GasAmeren TransmissionOtherIntersegment EliminationsAmeren
Three Months 2022:Three Months 2022:
External revenuesExternal revenues$808 $464 $481 $126 $— $— $1,879 
Intersegment revenuesIntersegment revenues10 1 — 20 — (31)— 
Net income attributable to Ameren common shareholdersNet income attributable to Ameren common shareholders50 49 80 58 (a)15 — 252 
Capital expendituresCapital expenditures414 138 49 172 2 (1)774 
Three Months 2021:Three Months 2021:Three Months 2021:
External revenuesExternal revenues$695 $411 $347 $113 $— $— $1,566 External revenues$695 $411 $347 $113 $— $— $1,566 
Intersegment revenuesIntersegment revenues9 0 0 17 — (26)— Intersegment revenues9 — — 17 — (26)— 
Net income attributable to Ameren common shareholdersNet income attributable to Ameren common shareholders47 46 75 47 (a)18 — 233 Net income attributable to Ameren common shareholders47 46 75 47 (a)18 — 233 
Capital expendituresCapital expenditures534 (b)157 48 141 1 6 887 (b)Capital expenditures534 (b)157 48 141 1 6 887 (b)
Three Months 2020:
External revenues$670 $389 $271 $110 $— $— $1,440 
Intersegment revenues10 1 0 13 — (24)— 
Net income (loss) attributable to Ameren common shareholders(10)37 55 47 (a)17 — 146 
Capital expenditures278 123 61 170 3 1 636 
(a)Ameren Transmission earnings reflect an allocation of financing costs from Ameren (parent).
(b)Includes $193 million at Ameren and Ameren Missouri for wind generation expenditures for the three months ended March 31, 2021.
Ameren Illinois
Ameren Illinois Electric DistributionAmeren Illinois Natural GasAmeren Illinois TransmissionIntersegment EliminationsAmeren IllinoisAmeren Illinois Electric DistributionAmeren Illinois Natural GasAmeren Illinois TransmissionIntersegment EliminationsAmeren Illinois
Three Months 2022:Three Months 2022:
External revenuesExternal revenues$465 $481 $78 $— $1,024 
Intersegment revenuesIntersegment revenues— — 20 (20)— 
Net income available to common shareholderNet income available to common shareholder49 80 40 — 169 
Capital expendituresCapital expenditures138 49 155 — 342 
Three Months 2021:Three Months 2021:Three Months 2021:
External revenuesExternal revenues$411 $347 $65 $— $823 External revenues$411 $347 $65 $— $823 
Intersegment revenuesIntersegment revenues0 0 16 (16)— Intersegment revenues— — 16 (16)— 
Net income available to common shareholderNet income available to common shareholder46 75 28 — 149 Net income available to common shareholder46 75 28 — 149 
Capital expendituresCapital expenditures157 48 132 — 337 Capital expenditures157 48 132 — 337 
Three Months 2020:
External revenues$390 $271 $62 $— $723 
Intersegment revenues0 0 12 (12)— 
Net income available to common shareholder37 55 28 — 120 
Capital expenditures123 61 140 — 324 
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The following tables present disaggregated revenues by segment at Ameren and Ameren Illinois for the three months ended March 31, 20212022 and 2020.2021. Economic factors affect the nature, timing, amount, and uncertainty of revenues and cash flows in a similar manner across customer classes. Revenues from alternative revenue programs have a similar distribution among customer classes as revenues from contracts with customers. Other revenues not associated with contracts with customers are presented in the Other customer classification, along with electric transmission and off-system revenues.
Ameren
Ameren MissouriAmeren Illinois Electric DistributionAmeren Illinois Natural GasAmeren TransmissionIntersegment EliminationsAmerenAmeren MissouriAmeren Illinois Electric DistributionAmeren Illinois Natural GasAmeren TransmissionIntersegment EliminationsAmeren
Three Months 2022:Three Months 2022:
ResidentialResidential$332 $263 $— $— $— $595 
CommercialCommercial240 158 — — — 398 
IndustrialIndustrial57 45 — — — 102 
OtherOther109 (1)— 146 (31)223 
Total electric revenuesTotal electric revenues$738 $465 $— $146 $(31)$1,318 
ResidentialResidential$51 $— $369 $— $— $420 
CommercialCommercial22 — 97 — — 119 
IndustrialIndustrial2 — 17 — — 19 
OtherOther5 — (2)— — 3 
Total natural gas revenuesTotal natural gas revenues$80 $— $481 $— $— $561 
Total revenues(a)
Total revenues(a)
$818 $465 $481 $146 $(31)$1,879 
Three Months 2021:Three Months 2021:Three Months 2021:
ResidentialResidential$312 $229 $0 $0 $0 $541 Residential$312 $229 $— $— $— $541 
CommercialCommercial216 132 0 0 0 348 Commercial216 132 — — — 348 
IndustrialIndustrial52 34 0 0 0 86 Industrial52 34 — — — 86 
OtherOther61 16 0 130 (26)181 Other61 16 — 130 (26)181 
Total electric revenuesTotal electric revenues$641 $411 $0 $130 $(26)$1,156 Total electric revenues$641 $411 $— $130 $(26)$1,156 
ResidentialResidential$34 $0 $251 $0 $0 $285 Residential$34 $— $251 $— $— $285 
CommercialCommercial15 0 64 0 0 79 Commercial15 — 64 — — 79 
IndustrialIndustrial1 0 14 0 0 15 Industrial1 — 14 — — 15 
OtherOther13 0 18 0 0 31 Other13 — 18 — — 31 
Total natural gas revenuesTotal natural gas revenues$63 $0 $347 $0 $0 $410 Total natural gas revenues$63 $— $347 $— $— $410 
Total revenues(a)
Total revenues(a)
$704 $411 $347 $130 $(26)$1,566 
Total revenues(a)
$704 $411 $347 $130 $(26)$1,566 
Three Months 2020:
Residential$297 $220 $0 $0 $— $517 
Commercial221 126 0 0 0 347 
Industrial53 35 0 0 0 88 
Other60 9 0 123 (24)168 
Total electric revenues$631 $390 $0 $123 $(24)$1,120 
Residential$33 $0 $213 $0 $0 $246 
Commercial13 0 54 0 0 67 
Industrial1 0 3 0 0 4 
Other2 0 1 0 0 3 
Total natural gas revenues$49 $0 $271 $0 $0 $320 
Total revenues(a)
$680 $390 $271 $123 $(24)$1,440 
(a)The following table presents increases/(decreases) in revenues from alternative revenue programs and other revenues not from contracts with customers for the three months ended March 31, 20212022 and 2020:2021:
Ameren MissouriAmeren Illinois Electric DistributionAmeren Illinois Natural GasAmeren TransmissionAmerenAmeren MissouriAmeren Illinois Electric DistributionAmeren Illinois Natural GasAmeren TransmissionAmeren
Three Months 2022:Three Months 2022:
Revenues from alternative revenue programsRevenues from alternative revenue programs$(6)$55 $(5)$1 $45 
Other revenues not from contracts with customersOther revenues not from contracts with customers— (a)2 1 — 3 (a)
Three Months 2021:Three Months 2021:Three Months 2021:
Revenues from alternative revenue programsRevenues from alternative revenue programs$(10)$61 $3 $(1)$53 Revenues from alternative revenue programs$(10)$61 $3 $(1)$53 
Other revenues not from contracts with customersOther revenues not from contracts with customers(2)3 1 0 2 Other revenues not from contracts with customers(2)3 1 — 2 
Three Months 2020:
Revenues from alternative revenue programs$(3)$46 $11 $12 $66 
Other revenues not from contracts with customers8 1 1 0 10 
(a)Includes insurance recoveries related to lost sales associated with the Callaway Energy Center maintenance outage. See Note 10 – Callaway Energy Center for additional information.
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Ameren Illinois
Ameren Illinois Electric DistributionAmeren Illinois Natural GasAmeren Illinois TransmissionIntersegment EliminationsAmeren IllinoisAmeren Illinois Electric DistributionAmeren Illinois Natural GasAmeren Illinois TransmissionIntersegment EliminationsAmeren Illinois
Three Months 2022:Three Months 2022:
ResidentialResidential$263 $369 $— $— $632 
CommercialCommercial158 97 — — 255 
IndustrialIndustrial45 17 — — 62 
OtherOther(1)(2)98 (20)75 
Total revenues(a)
Total revenues(a)
$465 $481 $98 $(20)$1,024 
Three Months 2021:Three Months 2021:Three Months 2021:
ResidentialResidential$229 $251 $0 $0 $480 Residential$229 $251 $— $— $480 
CommercialCommercial132 64 0 0 196 Commercial132 64 — — 196 
IndustrialIndustrial34 14 0 0 48 Industrial34 14 — — 48 
OtherOther16 18 81 (16)99 Other16 18 81 (16)99 
Total revenues(a)
Total revenues(a)
$411 $347 $81 $(16)$823 
Total revenues(a)
$411 $347 $81 $(16)$823 
Three Months 2020:
Residential$220 $213 $0 $0 $433 
Commercial126 54 0 0 180 
Industrial35 3 0 0 38 
Other9 1 74 (12)72 
Total revenues(a)
$390 $271 $74 $(12)$723 
(a)The following table presents increases/(decreases) in revenues from alternative revenue programs and other revenues not from contracts with customers for the Ameren Illinois segments for the three months ended March 31, 20212022 and 2020:2021:
Ameren Illinois Electric DistributionAmeren Illinois Natural GasAmeren Illinois TransmissionAmeren IllinoisAmeren Illinois Electric DistributionAmeren Illinois Natural GasAmeren Illinois TransmissionAmeren Illinois
Three Months 2022:Three Months 2022:
Revenues from alternative revenue programsRevenues from alternative revenue programs$55 $(5)$1 $51 
Other revenues not from contracts with customersOther revenues not from contracts with customers2 1 — 3 
Three Months 2021:Three Months 2021:Three Months 2021:
Revenues from alternative revenue programsRevenues from alternative revenue programs$61 $3 $(1)$63 Revenues from alternative revenue programs$61 $3 $(1)$63 
Other revenues not from contracts with customersOther revenues not from contracts with customers3 1 0 4 Other revenues not from contracts with customers3 1 — 4 
Three Months 2020:
Revenues from alternative revenue programs$46 $11 $10 $67 
Other revenues not from contracts with customers1 1 0 2 
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS.
The following discussion should be read in conjunction with the financial statements and Risk Factors contained in this Form 10-Q, as well as Management’s Discussion and Analysis of Financial Condition and Results of Operations and Risk Factors contained in the Form 10-K. We intend for this discussion to provide the reader with information that will assist in understanding our financial statements, the changes in certain key items in those financial statements, and the primary factors that accounted for those changes, as well as how certain accounting principles affect our financial statements. The discussion also provides information about the financial results of our business segments to provide a better understanding of how those segments and their results affect the financial condition and results of operations of Ameren as a whole. Also see the Glossary of Terms and Abbreviations at the front of this report and in the Form 10-K.
Ameren, headquartered in St. Louis, Missouri, is a public utility holding company whose primary assets are its equity interests in its subsidiaries. Ameren’s subsidiaries are separate, independent legal entities with separate businesses, assets, and liabilities. Dividends on Ameren’s common stock and the payment of expenses by Ameren depend on distributions made to it by its subsidiaries. Ameren’s principal subsidiaries are listed below. Ameren has other subsidiaries that conduct other activities, such as providing shared services.
•Union Electric Company, doing business as Ameren Missouri, operates a rate-regulated electric generation, transmission, and distribution business and a rate-regulated natural gas distribution business in Missouri.
•Ameren Illinois Company, doing business as Ameren Illinois, operates rate-regulated electric transmission, electric distribution, and natural gas distribution businesses in Illinois.
•ATXI operates a FERC rate-regulated electric transmission business in the MISO.
Ameren’s and Ameren Missouri’s financial statements are prepared on a consolidated basis and therefore include the accounts of itstheir majority-owned subsidiaries. All intercompany transactions have been eliminated. Ameren Missouri andMissouri’s subsidiaries were created for the ownership of renewable generation projects. Ameren Illinois havehas no subsidiaries. All tabular dollar amounts are in millions, unless otherwise indicated.
In addition to presenting results of operations and earnings amounts in total, we present certain information in cents per share. These amounts reflect factors that directly affect Ameren’s earnings. We believe this per share information helps readers to understand the impact of these factors on Ameren’s earnings per share.
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OVERVIEW
Net income attributable to Ameren common shareholdersshareholders in the three months ended March 31, 2021,2022, was $233$252 million, or $0.91$0.97 per diluted share, compared with $146$233 million, or $0.59$0.91 per diluted share, in the year-ago period. Net income for the three months ended March 31, 2021,2022, compared to the year-ago period, was favorably affected by the results of Ameren Missouri’s March 2020 electricincreased rate order, infrastructurebase investments that droveacross all segments and a higher earningsrecognized ROE at Ameren Transmission and Ameren Illinois Electric Distribution and increased earnings at Ameren Illinois Natural Gas as a result of a change in rate design, which concentrates more revenues in the winter heating season due to an increase in volumetric rates and a decrease in fixed customer rates, and higher delivery service rates.. Earnings for the three months ended March 31, 2021, compared to the year-ago period, were also favorably affected by lower other operations and maintenance expenses not subject to riders or regulatory tracking mechanisms, primarily due to changes in the value of company owned life insurance and disciplined cost management; increased Ameren Missouri electric retail sales, primarily resulting from colder winter temperatures experienced in 2021; and increased income tax benefit at Ameren (parent) and Ameren Missouri due to timing differences associated with certain income tax benefits, which is not expected to materially impact full year results. Net income for the three months ended March 31, 2021,2022, compared to the year-ago period, was unfavorablyalso favorably affected by the resultabsence in 2022 of the FERC’s March 2021 FERC order, primarily related to the historical recovery of materials and supplies inventories, and increased retail electric sales volumes at Ameren Missouri, primarily resulting from colder temperatures experienced in 2022. Earnings for the three months ended March 31, 2022, compared to the year-ago period, was unfavorably affected by which decreasedincreased other operations and maintenance expenses, primarily due to a reduction in the cash surrender value of company-owned life insurance and an increase due to the expiration of contracts relating to refined coal tax credits at Ameren Transmission earnings; the effect of dilution; and higherMissouri in 2021, increased financing costs at Ameren (parent).from debt issuances, and the effects of dilution.
Ameren’s strategic plan includes investing and operating its utilities in a manner consistent with existing regulatory frameworks, enhancing those frameworks, and advocating for responsible energy and economic policies, as well as creating and capitalizing on opportunities for investment for the benefit of its customers, shareholders, and the environment. Ameren remains focused on disciplined cost management and strategic capital allocation. Ameren invested $0.9$0.8 billion in its rate-regulated businesses in the three months ended March 31, 2021.2022.
The COVID-19 pandemic continues to affect our results of operations, financial position, and liquidity, but we expect a gradual improvement inliquidity. While our electric sales volumes, in 2021, compared to 2020. In the first three months of 2021, our sales volumes were comparable to the same period in 2020, excluding the estimated effects of weather and customer energy-efficiency programs. However, we experiencedprograms, were comparable to the same period in 2021, and total sales volume levels were comparable to pre-pandemic levels, there has been a shift in sales volumes by customer class, which began in 2020, with an increase in our accounts receivable balances that were past due or that were a part of a deferred payment arrangement,residential sales, and a declinedecrease in our cash collections from customers.commercial and industrial sales. The continued effect of the COVID-19 pandemic on our results of operations, financial position, and liquidity in subsequent periods will depend on its severity and longevity, future regulatory or legislative actions with respect thereto, and the resulting impact on business, economic, and capital market conditions. In general, restrictions on social activities and nonessential businesses implemented in our service territories in 2020 have been relaxed. However, certain restrictions remain in place that limit individual activities and the operation of nonessential businesses and additional restrictions may be imposed in the future. We continue to assess the impacts the COVID-19 pandemic is having on our businesses, including impacts on electric and natural gas sales volumes, liquidity, bad debt expense, and supply chain operations. For further discussion of these and other matters discussed below, see Note 1 – Summary of Significant Accounting Policies and Note 2 – Rate and Regulatory Mattersunder Part I, Item 1, of this report, and Results of Operations, Liquidity and Capital Resources, and Outlook sections below.
In addition,December 2021, Ameren Missouri filed a motion with the United States District Court for informationthe Eastern District of Missouri to modify a September 2019 remedy order issued by the district court to allow the retirement of the Rush Island Energy Center in advance of its previously expected useful life in lieu of installing a flue gas desulfurization system. The district court is under no deadline to issue a ruling revising the remedy order. In January 2022, the MISO completed a preliminary informational assessment regarding potential impacts of the retirement to the regional electric power system, which indicated transmission upgrades and voltage support would be needed in advance of the retirement of the Rush Island Energy Center to address reliability concerns. In February 2022, Ameren Illinois’ suspensionMissouri formally notified the MISO of its intent to retire the Rush Island Energy Center and subsequent reinstatementrequested the MISO to perform a final reliability assessment, which is expected to be completed in May 2022. The MISO must also separately approve the specific upgrades and transmission support required to address reliability concerns noted in the final assessment. Additionally, the MISO will determine whether reliability concerns require the Rush Island Energy Center to be classified as a system support resource, which should continue operating until the completion of to-be-specified transmission upgrades. If the Rush Island Energy Center were identified as a system support resource, an agreement detailing the manner of and time for continued operation would be filed with the FERC for approval. The district court has the authority to determine the retirement date and operating parameters for the Rush Island Energy Center and is not bound by the MISO determination or FERC’s approval. Related to this matter, in February 2022, the MoPSC issued an order directing the MoPSC staff to review Ameren Missouri’s planned accelerated retirement of the Rush Island Energy Center, including potential impacts on the reliability and cost of Ameren Missouri’s service to its customers, Ameren Missouri’s plans to mitigate the customer disconnection activitiesimpacts of the accelerated retirement, and late fee charges for nonpayment, seethe prudence of Ameren Missouri’s actions and decisions with regard to the Rush Island Energy Center, among other things. In April 2022, the MoPSC staff filed an initial report with the MoPSC in which the staff concluded early retirement of the Rush Island Energy Center may cause reliability concerns. The MoPSC staff is under no deadline to complete this review. Ameren Missouri expects to seek approval from the MoPSC to finance the costs associated with the retirement, including the remaining unrecovered net plant balance associated with the facility, through the issuance of securitized utility tariff bonds pursuant to the Missouri securitization statute that became effective in August 2021. See Note 29 – RateCommitments and Regulatory MattersContingencies under Part I, Item 1, of this report.
In January 2021, Ameren Missouri acquired an up-to 300-MW wind generation project located in northwestern Missouri and partially placed it in service as the Atchison Renewable Energy Center. As of the date of this filing, Ameren Missouri has placed approximately half of the project in service, representing a purchase price of approximately $250 million, including an immaterial amount of transaction costs. Ameren Missouri expects the remaining MWs of the project to be in service by the end of September 2021. The Atchison Renewable Energy Center will support Ameren Missouri’s compliance with the Missouri renewable energy standard.report for additional information.
In February 2021,2022, Ameren Missouri filed an update to its Smart Energy Plan with the MoPSC, which includes a five-year capital investment overview with a detailed one-year plan for 2021.2022. The plan is designed to upgrade Ameren Missouri’s electric infrastructure and includes investments that will upgrade the grid and accommodate more renewable energy. Investments under the plan are expected to total approximately $8.4 billion over the five-year period from 20212022 through 2025,2026, with expenditures largely recoverable under the PISA and the RESRAM. The planned investments in 2024 and 2025through 2026 are based on the assumption that Ameren Missouri requests and receives MoPSC approval of an extension of the PISA throughfrom December 2023 to December 2028.
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In March 2021,May 2022, Senate Bill 745 passed the Missouri General Assembly and was sent to the governor for approval. If enacted, among other things, the bill would extend the PISA election through December 2028 and allow for an additional five-year extension through December 2033 if requested by Ameren Missouri filedand approved by the MoPSC. In addition, a request with2.5% limit on customer rate increases resulting from PISA deferrals would become effective beginning in 2024. For information on the MoPSC seeking approval to increase its annual revenues for electric service by $299 million. The electric rate increase request is based on a 9.9% ROE, a capital structure composed of 51.9% common equity, a rate base of $10.0 billion and a test year ended December 31, 2020, with certain pro-forma adjustments expectedlimitation effective through an anticipated true-up date of September 30, 2021. The MoPSC proceeding relating to the proposed electric service rate changes will take place over a period of up to 11 months, with a decision by the MoPSC expected by February 2022 and new rates effective by March 2022. See2023, see Note 2 – Rate and Regulatory Mattersunder Part I,II, Item 1,8, of this report for additional information.
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the Form 10-K.
In March 2021,January 2022, Ameren MissouriIllinois filed a request with the MoPSC seeking approvalICC proposing performance metrics that would be used in determining ROE incentives and penalties under an MYRP. The ICC is required to increaseissue an order on this matter by September 30, 2022.
In April 2022, Ameren Illinois filed its annual revenueselectric distribution service performance-based formula rate update with the ICC to be used for natural gas delivery service by $92023 rates, requesting an increase of $83 million. The natural gasThis update reflects an increase to the annual performance-based formula rate increase request is based on a 9.8% ROE,2021 actual recoverable costs and expected net plant additions for 2022, an increase to include the 2021 revenue requirement reconciliation adjustment including a capital structure composed of 51.9%54% common equity, a rate base of $310 million, and a test year endeddecrease for the conclusion of the 2020 revenue requirement reconciliation adjustment, which will be fully collected from customers in 2022, consistent with the ICC’s December 31, 2020,2021 annual update filing order. An ICC decision in this proceeding is required by December 2022, with certain pro-forma adjustments expected through an anticipated true-up date of September 30, 2021. The MoPSC proceeding relating to the proposed natural gas delivery service rate changes will take place over a period of up to 11 months with a decision by the MoPSC expected by February 2022 and new rates effective by March 2022.in January 2023.
In March 2021, the MoPSC issued orders approving nonunanimous stipulation and agreements related to Ameren Missouri’s electric and natural gas service accounting authority order requests. The orders allowed Ameren Missouri to accumulate $9 million of certain costs incurred related to the COVID-19 pandemic, net of cost savings, as well as forgone customer late fee and reconnection fee revenues from March 2020 to March 2021, for potential recovery in the electric and natural gas service regulatory rate reviews discussed above. As of March 31, 2021, Ameren Missouri deferred $5 million as a regulatory asset related to the accounting authority orders. If approved for recovery, Ameren Missouri would recognize the remaining $4 million associated with forgone customer late fee and reconnection fee revenue when billed to customers.
In March 2021, the ICC issued an order approving Ameren Illinois’ requested tariff to reconcile its electric distribution service revenue requirement for a period of up to two years after the final customer rate update under performance-based formula ratemaking. To utilize the reconciliation, the ICC-approved tariff requires Ameren Illinois to file a traditional regulatory rate review for its electric distribution service, which may be based on a future test year, by the end of March in the year following the last year in which an annual performance-based formula rate update was permitted. Pursuant to this order, and without legislative change or Ameren Illinois’ election to no longer use performance-based formula ratemaking, Ameren Illinois’April 2022, and 2023 revenues would reflect each year’s actual costs, year-end rate base, and a return at the applicable WACC, with the ROE based on the annual average of the monthly yields of the 30-year United States Treasury bonds plus 580 basis points. The revenue requirement adjustment will be collected from, or refunded to, customers within two years from the end of the reconciled year.
In March 2021, Ameren Illinois filed a revised energy-efficiency plan with the ICC an energy-efficiency plan which includes annual investmentsto invest approximately $120 million per year in electric energy-efficiency programs up to approximately $100 million per year from 2022 through 2025.2025, which reflects the increased level of annual investments allowed under the IETL. The ICC has the ability to reduce the amount of electric energy-efficiency savings goals in future plan program years if there are insufficient cost-effective programs available, which could reduce the investments in electric energy-efficiency programs. The electric energy-efficiency program investments and the return on those investments are collected from customers through a rider and are not included inrecovered through the electric distribution service performance-based formula ratemaking framework. A decision by theThe ICC is under no deadline to issue an order in this proceeding is expected by September 2021.
In April 2021, Ameren Illinois filed its annual electric distribution service performance-based formula rate update with the ICC, requesting an increase of $64 million in its rates. This update reflects an increase to the annual performance-based formula rate based on 2020 actual costs, an increase to include the 2020 revenue requirement reconciliation adjustment, and an increase for the conclusion of the 2019 revenue requirement reconciliation adjustment, which will be fully refunded to customers in 2021, consistent with the ICC’s December 2020 annual update filing order. It also reflects an increase based on expected net plant additions for 2021. An ICC decision in this proceeding is expected by December 2021, with new rates effective January 2022.proceeding.
RESULTS OF OPERATIONS
Our results of operations and financial position are affected by many factors. Economic conditions, including those resulting from the COVID-19 pandemic discussed below, energy-efficiency investments by our customers and by us, technological advances, distributed generation, and the actions of key customers can significantly affect the demand for our services. Ameren and Ameren Missouri results are also affected by seasonal fluctuations in winter heating and summer cooling demands, as well as by non-nuclear energy center maintenance outages. Additionally, fluctuations in interest rates and conditions in the capital and credit markets affect our cost of borrowing, and our pension and postretirement benefits costs. Almost all of Ameren’s revenues are subject to state or federal regulation. This regulation has a material impact on the rates we charge customers for our services. Our results of operations, financial position, and liquidity are affected by our ability to align our overall spending, both operating and capital, with the frameworks established by our regulators. See Note 2 – Rate and Regulatory Matters under Part I, Item 1, of this report and Note 2 – Rate and Regulatory Matters under Part II, Item 8, of the Form 10-K for additional information regarding Ameren Missouri’s, Ameren Illinois’, and ATXI’s regulatory mechanisms.
We continue to assessmonitor the impacts of the COVID-19 pandemic on our businesses, including impacts on electric and natural gas sales volumes, liquidity, supply chain operations, and bad debt expense.Regarding uncollectible accounts receivable, Ameren Illinois’ electric distribution and natural gas distribution businesses have bad debt riders, which provide for recovery of bad debt write-offs, net of any subsequent recoveries. Ameren Missouri does not have a bad debt rider or tracker, and thus its earnings are exposed to increases in bad debt expense, absent regulatory relief. However, Ameren Missouri has not experienced and does not expect a material impact to earnings from increases in bad debt expense. As of March 31, 2021, accounts receivable balances that were 30 days or greater past due or that were a part of a deferred payment arrangement represented 27%, 19%, and 32%, or $137 million, $33 million, and $104 million, of Ameren’s, Ameren Missouri’s, and Ameren Illinois’
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customer trade receivables before allowance for doubtful accounts, respectively. As of March 31, 2020, these percentages were 21%, 16%, and 25%, or $99 million, $29 million, and $70 million, for Ameren, Ameren Missouri, and Ameren Illinois, respectively. Ameren Missouri's electric sales volumes have been, and continue to be, affected by the COVID-19 pandemic. In the three months ended March 31, 2021, compared to the same period in 2020, Ameren Missouri experienced a reduction in commercial and industrial electric sales volumes, offset by increased electric sales volumes to higher margin residential customers, excluding the estimated effects of weather and customer energy-efficiency programs. The following table provides the increases and (decreases) in Ameren Missouri electric sales volumes by customer class for the three months ended March 31, 2021, compared to the same period in 2020, excluding the estimated effects of weather and customer energy-efficiency programs:
Three months ended March 31, 2021, versus same period in 2020
Ameren Missouri Customer Class
Residential2.7 %
Commercial(2.8)%
Industrial(1.2)%
Total(0.1)%
Ameren Missouri principally uses coal and enriched uranium for fuel in its electric operations and purchases natural gas for its customers. Ameren Illinois purchases power and natural gas for its customers. The prices for these commodities can fluctuate significantly because of the global economic and political environment, weather, supply, demand, and many other factors. We have natural gas cost recovery mechanisms for our Illinois and Missouri natural gas distribution businesses, a purchased power cost recovery mechanism for Ameren Illinois’ electric distribution business, and a FAC for Ameren Missouri’s electric business.
We employ various risk management strategies to reduce our exposure to commodity risk and other risks inherent in our business. The reliability of Ameren Missouri’s energy centers and our transmission and distribution systems, and the level and timing of operations and maintenance costs and capital investment, are key factors that we seek to manage in order to optimize our results of operations, financial position, and liquidity.
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Earnings Summary
The following table presents a summary of Ameren’s earnings for the three months ended March 31, 20212022 and 2020:2021:
Three MonthsThree Months
2021202020222021
Net income attributable to Ameren common shareholdersNet income attributable to Ameren common shareholders$233 $146 Net income attributable to Ameren common shareholders$252 $233 
Earnings per common share – diluted
Earnings per common share – diluted
0.91 0.59 
Earnings per common share – diluted
0.97 0.91 
Net income attributable to Ameren common shareholders increased $87$19 million, or 6 cents per diluted share, in the three months ended March 31, 2021, 2022, compared with the year-ago period. The increase was due to net income increases of $20$11 million, $9$5 million, and $1$3 million, $3 million, at Ameren Transmission, Ameren Illinois Natural Gas, Ameren Missouri, and Ameren Illinois Electric Distribution, andrespectively. These increases were partially offset by a $3 million decrease in the net income for activity not reported as part of a segment, primarily at Ameren (parent), respectively. Additionally, Ameren Missouri had net income of $47 million, compared to a net loss of $10 million in the same period in 2020..
Earnings per diluted share were favorably affected in the three months ended March 31, 2021,2022, compared to the year-ago period, by:
•the resultsincreased rate base investments at Ameren Transmission and Ameren Illinois Electric Distribution and a higher recognized ROE due to a higher estimated annual average of the March 2020 MoPSC electric rate order, as discussed in Note 2 – Rate and Regulatory Matters under Part II, Item 8,monthly yields of the Form 10-K, which reduced the base level of expenses 30-year United States Treasury bonds at Ameren Missouri, partially offset by lower base rates, net of recovery for amounts associated with the reduction in sales volumes resulting from MEEIA programs and recoverable depreciation under the PISA (10 cents per share);
•decreased other operations and maintenance expense not subject to riders and trackers, primarily due to changes in the cash surrender value of company-owned life insurance and disciplined cost management, partially offset by 2 cents per share due to amortization of costs associated with the Callaway Energy Center’s scheduled refueling and maintenance outage completed in 2020 (6Illinois Electric Distribution, which increased revenues at these segments (4 cents per share);
•increased rate base investments and a higher recognized ROE, which increased earnings at Ameren Transmission and Ameren Illinois Electric Distribution (5 cents per share);
•increased income tax benefit at Ameren (parent), primarily due to increased interim period income tax benefits in 2021 related to wind generation facilities, and at Ameren Missouri primarily due to year-over-year timing differences associated with the recognition of excess deferred income taxes, both of which are not expected to materially impact full year results (4 cents per share);
•the impact of weather on electric retail sales at Ameren Missouri, primarily resulting from colder winter temperatures experienced in 2021 (estimated at 4 cents per share);
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•a change in rate design pursuant to the ICC's January 2021 natural gas rate order that concentrates more revenues in the winter heating season due to an increase in volumetric rates, which increased margins at Ameren Illinois Natural Gas forearnings from investments in qualifying infrastructure recovered under the three months ended March 31, 2021, but is not expected to materially impact full year results (4 cents per share);
•QIP and higher base rates pursuant to the ICC's January 2021 natural gas rate order (3 cents per share);
•the absence in 2022 of the FERC’s March 2021 order, primarily related to the historical recovery of materials and supplies inventories, which decreased Ameren Transmission revenues in 2021 (3 cents per share);
•increased base rate revenues for the inclusion of previously deferred interest charges pursuant to the December 2021 MoPSC electric rate order and increased margins at Ameren Illinois Natural Gasdeferral of interest charges related to infrastructure investments associated with the PISA and RESRAM (3 cents per share); and
•increased other income, net,electric retail sales at Ameren Missouri, due to the absence of charitable donations madeprimarily resulting from colder temperatures experienced in 2020 pursuant to the March 2020 electric rate order (22022 (estimated at 3 cents per share).
Earnings per diluted share were unfavorably affected in the three months ended March 31, 2021,2022, compared to the year-ago period, by:
•increased weighted-average basic common shares outstandingother operations and maintenance expenses not subject to riders and trackers, primarily due to a reduction in the effectcash surrender value of dilution (4company-owned life insurance and an increase due to the expiration of contracts relating to refined coal tax credits at Ameren Missouri in 2021 (8 cents per share);
•the result of the March 2021 FERC order, primarily related to the historical recovery of materials and supplies inventories, which decreased Ameren Transmission earnings (3 cents per share); and
•increased net financing costs, primarily at Ameren (parent), primarily and Ameren Missouri, largely due to higher long-term debt balances (2 cents per share); and
•increased weighted-average basic common shares outstanding resulting from issuances of common shares as detailed in Note 4 – Long-term Debt and Equity Financings under Part I, Item 1, of this report, and Note 5 – Long Term Debt and Equity Financings under Part II, Item 8, of the Form 10-K (1 cent per share).
The cents per share informationvariances above are presented is based on the weighted-average basic common shares outstanding in the three months ended March 31, 2020,2021, and doesdo not reflect any change inthe impact of dilution on earnings per share, resulting from dilution, unless otherwise noted. Amounts other than variances related to income taxes have been presented net of income taxes using Ameren’s 20212022 blended federal and state statutory tax rate of 26%. For additional details regarding the Ameren Companies’ results of operations, including explanations of Electric and Natural Gas Margins, Other Operations and Maintenance Expenses, Depreciation and Amortization Expenses, Taxes Other Than Income Taxes, Other Income, Net, Interest Charges, and Income Taxes, see the major headings below.
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Below is Ameren’s table of income statement components by segment for the three months ended March 31, 20212022 and 2020:2021:
Ameren
Missouri		Ameren
Illinois
Electric
Distribution		Ameren
Illinois
Natural Gas		Ameren TransmissionOther /
Intersegment
Eliminations		AmerenAmeren
Missouri		Ameren
Illinois
Electric
Distribution		Ameren
Illinois
Natural Gas		Ameren TransmissionOther /
Intersegment
Eliminations		Ameren
Three Months 2021:
Three Months 2022:Three Months 2022:
Electric revenuesElectric revenues$738 $465 $— $146 $(31)$1,318 
FuelFuel(176)— — — — (176)
Purchased powerPurchased power(50)(151)— — 24 (177)
Electric marginsElectric margins$488 $289 $— $130 $(7)$900 Electric margins512 314 — 146 (7)965 
Natural gas revenuesNatural gas revenues80 — 481 — — 561 
Natural gas purchased for resaleNatural gas purchased for resale(46)— (247)— — (293)
Natural gas marginsNatural gas margins32 — 213 — — 245 Natural gas margins34 — 234 — — 268 
Other operations and maintenance expensesOther operations and maintenance expenses(225)(125)(56)(16)2 (420)Other operations and maintenance expenses(232)(147)(63)(16)(3)(461)
Depreciation and amortization expensesDepreciation and amortization expenses(156)(75)(22)(28)— (281)Depreciation and amortization expenses(164)(81)(23)(30)(1)(299)
Taxes other than income taxesTaxes other than income taxes(77)(20)(25)(2)(4)(128)Taxes other than income taxes(85)(20)(31)(2)(4)(142)
Operating income (loss)Operating income (loss)65 66 117 98 (15)331 
Other income, netOther income, net23 8 3 3 9 46 Other income, net23 16 4 3 14 60 
Interest chargesInterest charges(39)(18)(10)(23)(10)(100)Interest charges(39)(18)(11)(22)(14)(104)
Income (taxes) benefitIncome (taxes) benefit2 (12)(28)(17)28 (27)Income (taxes) benefit2 (15)(30)(21)30 (34)
Net incomeNet income48 47 75 47 18 235 Net income51 49 80 58 15 253 
Noncontrolling interests – preferred stock dividends
Noncontrolling interests – preferred stock dividends
(1)(1)— — — (2)
Noncontrolling interests – preferred stock dividends
(1)— — — — (1)
Net income attributable to Ameren common shareholdersNet income attributable to Ameren common shareholders$47 $46 $75 $47 $18 $233 Net income attributable to Ameren common shareholders$50 $49 $80 $58 $15 $252 
Three Months 2020:
Three Months 2021:Three Months 2021:
Electric revenuesElectric revenues$641 $411 $— $130 $(26)$1,156 
FuelFuel(65)— — — — (65)
Purchased powerPurchased power(88)(122)— — 19 (191)
Electric marginsElectric margins$452 $280 $— $123 $(9)$846 Electric margins488 289 — 130 (7)900 
Natural gas revenuesNatural gas revenues63 — 347 — — 410 
Natural gas purchased for resaleNatural gas purchased for resale(31)— (134)— — (165)
Natural gas marginsNatural gas margins31 — 182 — — 213 Natural gas margins32 — 213 — — 245 
Other operations and maintenance expensesOther operations and maintenance expenses(239)(130)(57)(14)2 (438)Other operations and maintenance expenses(225)(125)(56)(16)2 (420)
Depreciation and amortization expensesDepreciation and amortization expenses(139)(71)(21)(24)— (255)Depreciation and amortization expenses(156)(75)(22)(28)— (281)
Taxes other than income taxesTaxes other than income taxes(79)(19)(22)(2)(3)(125)Taxes other than income taxes(77)(20)(25)(2)(4)(128)
Operating income (loss)Operating income (loss)62 69 110 84 (9)316 
Other income, netOther income, net4 7 2 2 6 21 Other income, net23 8 3 3 9 46 
Interest chargesInterest charges(40)(18)(10)(21)(4)(93)Interest charges(39)(18)(10)(23)(10)(100)
Income (taxes) benefitIncome (taxes) benefit1 (11)(19)(17)25 (21)Income (taxes) benefit2 (12)(28)(17)28 (27)
Net income (loss)(9)38 55 47 17 148 
Net incomeNet income48 47 75 47 18 235 
Noncontrolling interests – preferred stock dividends
Noncontrolling interests – preferred stock dividends
(1)(1)— — — (2)
Noncontrolling interests – preferred stock dividends
(1)(1)— — — (2)
Net income (loss) attributable to Ameren common shareholders$(10)$37 $55 $47 $17 $146 
Net income attributable to Ameren common shareholdersNet income attributable to Ameren common shareholders$47 $46 $75 $47 $18 $233 
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Below is Ameren Illinois’ table of income statement components by segment for the three months ended March 31, 20212022 and 2020:2021:
Ameren
Illinois
Electric
Distribution		Ameren
Illinois
 Natural Gas		Ameren
Illinois Transmission		Ameren IllinoisAmeren
Illinois
Electric
Distribution		Ameren
Illinois
 Natural Gas		Ameren
Illinois Transmission		Other /
Intersegment
Eliminations		Ameren Illinois
Three Months 2021:
Electric and natural gas margins$289 $213 $81 $583 
Three Months 2022:Three Months 2022:
Electric revenuesElectric revenues$465 $— $98 $(20)$543 
Purchased powerPurchased power(151)— — 20 (131)
Electric marginsElectric margins314 — 98 — 412 
Natural gas revenuesNatural gas revenues— 481 — — 481 
Natural gas purchased for resaleNatural gas purchased for resale— (247)— — (247)
Natural gas marginsNatural gas margins— 234 — — 234 
Other operations and maintenance expensesOther operations and maintenance expenses(125)(56)(13)(194)Other operations and maintenance expenses(147)(63)(13)— (223)
Depreciation and amortization expensesDepreciation and amortization expenses(75)(22)(18)(115)Depreciation and amortization expenses(81)(23)(20)— (124)
Taxes other than income taxesTaxes other than income taxes(20)(25)(1)(46)Taxes other than income taxes(20)(31)(2)— (53)
Operating income (loss)Operating income (loss)66 117 63 — 246 
Other income, netOther income, net8 3 3 14 Other income, net16 4 4 — 24 
Interest chargesInterest charges(18)(10)(14)(42)Interest charges(18)(11)(13)— (42)
Income taxesIncome taxes(12)(28)(10)(50)Income taxes(15)(30)(14)— (59)
Net income attributable to common shareholderNet income attributable to common shareholder$49 $80 $40 $— $169 
Three Months 2021:Three Months 2021:
Electric revenuesElectric revenues$411 $— $81 $(16)$476 
Purchased powerPurchased power(122)— — 16 (106)
Electric marginsElectric margins289 — 81 — 370 
Natural gas revenuesNatural gas revenues— 347 — — 347 
Natural gas purchased for resaleNatural gas purchased for resale— (134)— — (134)
Natural gas marginsNatural gas margins— 213 — — 213 
Other operations and maintenance expensesOther operations and maintenance expenses(125)(56)(13)— (194)
Depreciation and amortization expensesDepreciation and amortization expenses(75)(22)(18)— (115)
Taxes other than income taxesTaxes other than income taxes(20)(25)(1)— (46)
Operating income (loss)Operating income (loss)69 110 49 — 228 
Other income, netOther income, net8 3 3 — 14 
Interest chargesInterest charges(18)(10)(14)— (42)
Income taxesIncome taxes(12)(28)(10)— (50)
Net incomeNet income47 75 28 150 Net income47 75 28 — 150 
Preferred stock dividendsPreferred stock dividends(1)— — (1)Preferred stock dividends(1)— — — (1)
Net income attributable to common shareholderNet income attributable to common shareholder$46 $75 $28 $149 Net income attributable to common shareholder$46 $75 $28 $— $149 
Three Months 2020:
Electric and natural gas margins$280 $182 $74 $536 
Other operations and maintenance expenses(130)(57)(12)(199)
Depreciation and amortization expenses(71)(21)(15)(107)
Taxes other than income taxes(19)(22)(1)(42)
Other income, net7 2 2 11 
Interest charges(18)(10)(11)(39)
Income taxes(11)(19)(9)(39)
Net income38 55 28 121 
Preferred stock dividends(1)— — (1)
Net income attributable to common shareholder$37 $55 $28 $120 
Electric and Natural Gas Margins
Electric margins are defined as electric revenues less fuel and purchased power costs. Natural gas margins are defined as natural gas revenues less natural gas purchased for resale. We consider electric and natural gas margins useful measures to analyze the change in profitability of our electric and natural gas operations between periods. We have included the analysis below to complement the financial information we provide in accordance with GAAP. However, these margins may not be a presentation defined under GAAP, and they may not be comparable to other companies’ presentations or more useful than the GAAP information we provide elsewhere in this report.
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Electric Margins
Increase (Decrease) by Segment
Total by Segment(a)
Overall Ameren Increase of $54$65 Million
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(a)Includes other/intersegment eliminations of $(7) million and $(9)$(7) million in the three months ended March 31, 20212022 and 2020,2021, respectively.
Ameren MissouriAmeren Illinois Electric DistributionAmeren TransmissionOther/Intersegment Eliminations

Natural Gas Margins
Increase (Decrease) by Segment
Total by SegmentOverall Ameren Increase of $32$23 Million
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Ameren MissouriAmeren Illinois Natural Gas
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The following tabletables present the favorable (unfavorable) variations by Ameren segment for electric and natural gas margins for the three months ended March 31, 2021,2022, compared with the year-ago period:
Three MonthsAmeren MissouriAmeren Illinois
Electric Distribution		Ameren Illinois
Natural Gas
Ameren Transmission(a)
Other /Intersegment EliminationsAmeren
Electric revenue change:
Effect of weather (estimate)(b)
$18 $— $— $— $— $18 
Base rates (estimate)(c)
(6)3 — 7 — 4 
Sales volumes and changes in customer usage patterns (excluding the estimated effects of weather and MEEIA)(3)— — — — (3)
Off-system sales, capacity and FAC revenues, net(4)— — — — (4)
Energy-efficiency program investments— 3 — — — 3 
Other(4)4 — — (2)(2)
Cost recovery mechanisms – offset in fuel and purchased power(d)
3 12 — — — 15 
Other cost recovery mechanisms(e)
6 (1)— — — 5 
Total electric revenue change$10 $21 $— $7 $(2)$36 
Fuel and purchased power change:
Effect of weather (estimate)(b)
$(5)$— $— $— $— $(5)
Effect of lower net energy costs included in base rates36 — — — — 36 
Other(2)— — — 4 2 
Cost recovery mechanisms – offset in electric revenue(d)
(3)(12)— — — (15)
Total fuel and purchased power change$26 $(12)$— $— $4 $18 
Net change in electric margins$36 $9 $— $7 $2 $54 
Natural gas revenue change:
Effect of weather (estimate)(b)
$(3)$— $— $— $— $(3)
Base rates (estimate)— — 12 — — 12 
Change in rate design— — 12 — — 12 
Other— — 3 — — 3 
Cost recovery mechanisms – offset in natural gas purchased for resale(d)
17 — 45 — — 62 
Other cost recovery mechanisms(e)
— — 4 — — 4 
Total natural gas revenue change$14 $— $76 $— $— $90 
Natural gas purchased for resale change:
Effect of weather (estimate)(b)
$4 $— $— $— — $4 
Cost recovery mechanisms – offset in natural gas revenue(d)
(17)— (45)— — (62)
Total natural gas purchased for resale change$(13)$— $(45)$— $— $(58)
Net change in natural gas margins$1 $— $31 $— $— $32 
Electric and Natural Gas Margins
Three MonthsAmeren MissouriAmeren Illinois
Electric Distribution		Ameren Illinois
Natural Gas
Ameren Transmission(a)
Other /Intersegment EliminationsAmeren
Electric revenue change:
Effect of weather (estimate)(b)
$7 $— $— $— $— $7 
Base rates (estimate)(c)
18 19 — 16 — 53 
Sales volumes and changes in customer usage patterns (excluding the estimated effects of weather and MEEIA)4 — — — — 4 
Off-system sales, capacity, and FAC revenues, net52 — — — — 52 
Ameren Illinois energy-efficiency program investment revenues— 3 — — — 3 
Other(1)— — — — (1)
Cost recovery mechanisms – offset in fuel and purchased power(d)
24 29 — — (5)48 
Other cost recovery mechanisms(e)
(7)3 — — — (4)
Total electric revenue change$97 $54 $— $16 $(5)$162 
Fuel and purchased power change:
Energy costs (excluding the estimated effect of weather)$(47)$— $— $— $— $(47)
Effect of weather (estimate)(b)
(1)— — — — (1)
Effect of higher net energy costs included in base rates(1)— — — — (1)
Cost recovery mechanisms – offset in electric revenue(d)
(24)(29)— — 5 (48)
Total fuel and purchased power change$(73)$(29)$— $— $5 $(97)
Net change in electric margins$24 $25 $— $16 $— $65 
Natural gas revenue change:
Base rates (estimate)$1 $— $3 $— $— $4 
Change in rate design— — 1 — — 1 
QIP rider— — 9 — — 9 
Other— — 2 — — 2 
Cost recovery mechanisms – offset in natural gas purchased for resale(d)
15 — 113 — — 128 
Other cost recovery mechanisms(e)
1 — 6 — — 7 
Total natural gas revenue change$17 $— $134 $— $— $151 
Natural gas purchased for resale change:
Cost recovery mechanisms – offset in natural gas revenue(d)
$(15)$— $(113)$— $— $(128)
Total natural gas purchased for resale change$(15)$— $(113)$— $— $(128)
Net change in natural gas margins$2 $— $21 $— $— $23 
(a)Includes an increase in transmission margins of $7$17 million at Ameren Illinois for the three months ended March 31, 2021,2022, compared with the year-ago period.
(b)Represents the estimated variation resulting primarily from changes in cooling and heating degree-days on electric and natural gas demand compared with the year-ago period; this variation is based on temperature readings from the National Oceanic and Atmospheric Administration weather stations at local airports in our service territories.
(c)For Ameren Illinois Electric Distribution and Ameren Transmission, base rates include increases or decreases to operating revenues related to the revenue requirement reconciliation adjustment under formula rates. For Ameren Missouri, base rates exclude an increase of $7 million for the recovery of lost electric margins for the three months ended March 31, 2021, compared with the year-ago period, resulting from the MEEIA 2016 and 2019 customer energy-efficiency programs. This amount isprograms and an increase in base rates for RESRAM. These changes in base rates are included in the “sales“Sales volumes and changes in customer usage patterns (excluding the estimated effects of weather and MEEIA)” and “Cost recovery mechanisms” line item.items, respectively.
(d)Electric and natural gas revenue changes are offset by corresponding changes in “Fuel,” “Purchased power,” and “Natural gas purchased for resale” on the statement of income, resulting in no change to electric and natural gas margins. Activity in Other/Intersegment Eliminations represents the elimination of related-party transactions between Ameren Missouri, Ameren Illinois, and ATXI, as well as Ameren Transmission revenue from transmission services provided to Ameren Illinois Electric Distribution. See Note 8 – Related-party Transactions and Note 14 – Segment Information under Part I, Item 1, of this report for additional information on intersegment eliminations.
(e)Offsetting expense increases or decreases are reflected in “Other operations and maintenance,” “Depreciation and amortization,” or in “Taxes other than income taxes,” within the “Operating Expenses” section and "Income Taxes" in the statement of income. These items have no overall impact on earnings.
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Ameren
Ameren’s electric margins increased $54$65 million, or 6%7%, for the three months ended March 31, 2021,2022, compared with the year-ago period primarily because of, due to increased margins at Ameren Missouri, Ameren Illinois Electric Distribution, and Ameren Transmission, as discussed below. Ameren’s natural gas margins increased $32$23 million, or 15%9%, for the three months ended March 31, 2021,2022, compared with the year-agoyear-ago period, primarily because of increased margins at Ameren Illinois Natural Gas, as discussed below.
Ameren Transmission
Ameren Transmission’s margins increased $7$16 million, or 6%12%, for the three months ended March 31, 2021,2022, compared with the year-ago period. Base rate revenues were favorably affected by the absence in 2022 of the FERC’s March 2021 order (+$7 million), increased capital investment, investment, as evidenced by a 11% increase 10% increase in rate base used to calculate the revenue requirement partially offset by the March 2021 FERC order, which required refunds related to historical recovery of materials(+$5 million), and supplies inventories. higher recoverable expenses (+$4 million). See Transmission Formula Rate Revisions in Note 2 – Rate and Regulatory Matters under Part I, Item 1, of this report for additional information regarding the March 2021 FERC order.
Ameren Missouri
Ameren Missouri’s electric margins increased $36$24 million, or 8%5%, for the three months ended March 31, 2021,2022, compared with the year agoyear-ago period. Revenues associated with “Cost recovery mechanisms – offset in fuel and purchased power” increased $24 million for the three months ended March 31, 2022. The increased revenues are fully offset by an increase in fuel and purchased power costs, which increased primarily due to 2022 amortization of costs previously deferred under the FAC. The changes to “Cost recovery mechanisms - offset in fuel and purchased power” are fully offset by “Cost recovery mechanisms - offset in electric revenue,” in the table above, and result in no impact to margins. Ameren Missouri’s 5% exposure to net energy cost variances under the FAC is reflected within “Off-system sales, capacity, and FAC revenues, net” and “Energy costs (excluding the estimated effect of weather)”.
The following items had a favorable effect on Ameren Missouri’s electric margins between periods:
•The March 2020December 2021 MoPSC electric rate order effective February 28, 2022, that resulted in lowerhigher electric base rates, excluding the change in base rates for the MEEIA customer energy efficiency programs and the RESRAM, partially offset by higher net energy costs included in base rates, partially offset by lower electric base rates increased margins $30 million.$17 million. The change in electric base rates is the sum of the change in base“Base rates (estimate) (-” (+$618 million) and the effect“Effect of lowerhigher net energy costs included in base rates (+rates” (-$361 million) in the table above.
•Winter temperatures were colder as heating degree days increased 12%1% for the three months ended March 31, 2022. The aggregate effect of weather increased margins an estimated $13$6 million. The change in margins due to weather is the sum of the effect“Effect of weather (estimate)” on electric revenues (+$18 million)7 million) and the effect“Effect of weather (estimate)” on fuel and purchased power (-$51 million) in the table above.
The following items had an unfavorable effect on Ameren Missouri’s electric margins between periods:
•TheLower net energy costs increased margins $5 million. In 2021, the absence of the Callaway Energy Center generation and the significant increase in cost and customer demand caused by the extremely cold weather in mid-FebruaryFebruary 2021 drove higher net energy costs higher than those reflected in base rates, which reduced margins by $4 million, resulting from Ameren Missouri’s 5% exposure to net energy cost variances from base rates under the FAC. The change in net energy costs is the sum of the revenue change in “Off-system sales, capacity and FAC revenues, net” (+$52 million) and “Energy costs (excluding the estimated effect of weather)” (-$447 million) in the table above, and the change in “energy costs” (comparable between periods).above.
•Excluding the estimated effects of weather and the MEEIA customer energy-efficiency programs, electric revenues decreasedincreased an estimated $3 million. $4 million. The decreaseincrease was primarily due to a reductionan increase in the average retail price per kilowatthour due to changes in customer usage patternsand shifts in commercial and industrial usage betweenwithin rate classes. While the
Ameren Missouri’s other cost recovery mechanisms decreased margins $7 million primarily due to a reduction of recoverable MEEIA customer energy-efficiency programs reduced retail sales volumes, the recovery of lost electric margins under the MEEIA ensured that electric margins were not affected.program costs.
Ameren Missouri’s natural gas margins were comparable between periods. Purchased gas costs increased $17$15 million primarily resulting fromdue to 2022 amortization of natural gas costs previously deferred under the PGA, driven by a significant increase in cost and customer demand and prices for natural gas experienced in mid-February 2021 due toas result of the extremely cold weather.weather in February 2021, partially offset by lower natural gas prices in 2022. The increased purchased natural gas costs are fully offset by an increase in natural gas revenues under the PGA rider, resulting in no impact to margin. The increase in purchased natural gas cost is reflected in “cost“Cost recovery mechanisms -– offset in natural gas revenue” and the associated recoverability from customers is reflected in “cost“Cost recovery mechanisms -– offset in natural gas purchased for resale”. in the table above.
Ameren Illinois
Ameren Illinois’ electric margins increased $16$42 million, or 5%11%, for the three months ended March 31, 2021,2022, compared with the year-ago period, driven by increased margins at Ameren Illinois Electric Distribution and Ameren Illinois Transmission. Ameren Illinois Natural Gas’ margins increased $31$21 million, or 17%10%, between periods.for the three months ended March 31, 2022, compared with the year-ago period.
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Ameren Illinois Electric Distribution
Ameren Illinois Electric Distribution’s margins increased $9$25 million, or 3%9%, for the three months ended March 31, 2021,2022, compared with the year-ago period. Purchased power costs increased $12$29 million for the three months ended March 31, 2022, primarily resulting from the significant increase in customer demand andhigher electric prices for electricity experienced in mid-February 2021 due to the extremely cold weather. . The increased purchased power costs are fully offset by an increase in electric revenues under the cost recovery mechanisms for purchased power, resulting in no impact to margin. The increase in purchased power cost is reflected in “cost“Cost recovery mechanisms -– offset in electric revenue” and the associated recoverability
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from customers is reflected in “cost“Cost recovery mechanisms -– offset in fuel and purchased power”. in the table above.
The following items had a favorable effect on Ameren Illinois Electric Distribution’s margins between periods:
•MarginsBase rates increased due to a higher recognized ROE (+$42 million), as evidenced by an increase of 7229 basis points in the estimated annual average of the monthly yields of the 30-year United States Treasury bonds, and increased capital investment (+$2 million), as evidenced by a 6% 6% increase in rate base used to calculate the revenue requirement, partially offset by lowerand higher recoverable non-purchased power expenses (+$19 million), partially offset by the absence in 2022 of revenue requirement reconciliation adjustment true-ups (-$34 million). The sum of these changes collectively increased margins $3$19 million.
•Revenues increased $3$3 million due to the recovery of and return on increased energy-efficiency program investments under performance-based formula ratemaking.
Ameren Illinois Natural Gas
Ameren Illinois Natural Gas’ margins increased $31$21 million, or 17%10%, for the three months ended March 31, 20212022, compared with the year-ago period. Purchased gas costs increased $45$113 million primarily resulting fromfor thethree months ended March 31, 2022, due to 2022 amortization of natural gas costs previously deferred under the PGA, driven by a significant increase in cost and customer demand and prices for natural gas experienced in mid-February 2021 due toas a result of the extremely cold weather. weather in February 2021, partially offset by lower natural gas costs in 2022. The increased purchased natural gas costs are fully offset by an increase in natural gas revenues under the PGA rider, resulting in no impact to margin. The increase in purchased natural gas cost is reflected in “cost“Cost recovery mechanisms -– offset in natural gas revenue” and the associated recoverability from customers is reflected in “cost“Cost recovery mechanisms -– offset in natural gas purchased for resale”. in the table above.
The following items had a favorable effect on Ameren Illinois Natural Gas’ margins between periods:
•Revenues increased $9 million due to additional investment in qualified natural gas infrastructure under the QIP.
•Other cost recovery mechanisms increased revenues $6 million, primarily due to increased revenues for excise taxes.
•Revenues increased $12$3 million during January 2022 due to higher natural gas base rates as a result of the January 2021 natural gas rate order.
•The implementation of a change in rate design pursuant to the January 2021 natural gas rate order, which increased margins $12 million. This change in rate design concentrates more revenues in the winter heating season due to an increase in volumetric rates and a decrease in fixed customer rates. As such, the change is not expected to materially affect annual earnings comparisons.
Ameren Illinois Transmission
Ameren Illinois Transmission’s margins increased $7$17 million, or 9%21%, for the three months ended March 31, 2021,2022, compared with the year-ago period. MarginsBase rate revenues were favorably affected by the absence in 2022 of the FERC’s March 2021 order (+$7 million), increased capital investment, investment (+$5 million), as evidenced by a 17% increase 16% increase in rate base used to calculate the revenue requirement, prequirartially offset by the March 2021 FERC order, which required refunds related to historical recovery of materialsement, and supplies inventories. higher recoverable expenses (+$5 million).See Transmission Formula Rate Revisions in Note 2 – Rate and Regulatory Matters under Part I, Item 1, of this report for additional information regarding the March 2021 FERC order.


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Other Operations and Maintenance Expenses
Increase (Decrease) by Segment
Total by Segment(a)
Overall Ameren DecreaseIncrease of $18$41 Million
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(a)Includes other/intersegment eliminations of $(2)$3 million and $(2) million in the three months ended March 31, 20212022 and 2020,2021, respectively.
Ameren MissouriAmeren Illinois Natural GasOther/Intersegment Eliminations
Ameren Illinois Electric DistributionAmeren Transmission
Ameren
Other operations and maintenance expenses decreased $18increased $41 million in the three months ended March 31, 2021,2022, compared with the year-ago period, dueperiod. In addition to changes by segments discussed below.below, other operations and maintenance expenses increased $5 million for activity not reported as part of a segment, as reflected in “Other/Intersegment Eliminations” above, primarily because of increased costs for support services.
Ameren Transmission
Other operations and maintenance expenses were comparable between periods.
Ameren Missouri
The $14$7 million decreaseincrease in other operations and maintenance expenses in the three months ended March 31, 2021,2022, compared with the year-ago period, was primarily due to the following items:
•The absence in 2022 of $6 million service fees received from third parties under refined coal production agreements, as the result of the expiration of refined coal tax credits at the end of 2021.
•The cash surrender value of company-owned life insurance increased $8decreased $6 million, primarily because of unfavorable market returns in the year-ago period.2022.
•AmortizationThe absence of costs, primarily solar rebate costs incurred prior to the RESRAM, decreased $6a $5 million pursuant to the March 2020 MoPSC electric rate order.
•Deferraldeferral to a regulatory asset of $5 million of certain costs previously incurred related to the COVID-19 pandemic, pursuant to the March 2021 MoPSC orders.
•Transmission and distribution expenditures decreased $5 million, primarily resulting from less maintenance due to recent capital improvements and disciplined cost management.
The following items partially offset the above decreases in other operations and maintenance expenses between periods:
•Energy center maintenanceoperating costs, increased $8$3 million, primarily because of costs related to new wind generation facilities, which are recovered under the amortization of Callaway refueling and maintenance costs deferred as a regulatory asset in the year-ago period, pursuant to the February 2020 MoPSC order.RESRAM.
•Customer energy-efficiency program costs increased $6 million because of increased participation in the MEEIA programs in the current period.
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The above increases were partially offset by a $13 million decrease in MEEIA customer energy-efficiency program spend as approved by the MoPSC, compared with the year-ago period.
Ameren Illinois
Other operations and maintenance expenses decreased $5increased $29 million in the three months ended March 31, 2021,2022, compared with the year-ago period, as discussed below. Other operations and maintenance expenses were comparable between periods at Ameren Illinois Natural Gas and Ameren Illinois Transmission.
Ameren Illinois Electric Distribution
The $22 million increase in other operations and maintenance expenses in the three months ended March 31, 2022, compared with the year-ago period, was primarily due to the following items:
•Distribution system expenditures increased $10 million, primarily because of projects deferred in 2021 as a result of storm restoration efforts that were deferred as a regulatory asset in 2021.
•Increased bad debt expense of $5 million, primarily because of increased recovery of bad debt costs allowed by the ICC.
•The cash surrender value of company-owned life insurance decreased $3 million, primarily because of unfavorable market returns in 2022.
•Amortization of regulatory assets associated with customer energy-efficiency program investments under formula ratemaking increased $2 million.
Ameren Illinois Natural Gas
Other operations and maintenance expenses decreased $5increased $7 million in the three months ended March 31, 2021,2022, compared with the year-ago period, primarily because of a $4 million increase in distribution system expenditures, related to higher labor and contract service costs. Other operations and maintenance expenses also increased $2 million, primarily because of a decrease in the cash surrender value of company-owned life insurance due tobecause of unfavorable market returns in the year-ago period. Other operations and maintenance expenses also decreased because of a $3 million reduction in distribution expenditures, resulting from disciplined cost management and timing of expenditures.2022. These decreasesincreases were partially offset by a $2 million increasereduction in the amortizationcosts recovered through riders.
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Table of energy-efficiency program investments under performance-based ratemaking.Contents
Depreciation and Amortization Expenses
Increase (Decrease) by Segment
Total by Segment(a)
Overall Ameren Increase of $26$18 Million
aee-20210331_g10.jpgaee-20210331_g11.jpgaee-20220331_g10.jpgaee-20220331_g11.jpg
(a)Includes other/intersegment eliminations of $—$1 million and $— million in the three months ended March 31, 20212022 and 2020,2021, respectively.
Ameren MissouriAmeren Illinois Natural GasOther/Intersegment Eliminations
Ameren Illinois Electric DistributionAmeren Transmission
Depreciation and amortization expenses increased $26$18 million, $17$9 million, and $8 million in the three months ended March 31, 2021,2022, compared with the year-ago period, at Ameren, Ameren Missouri,Illinois, and Ameren Illinois,Missouri, respectively, primarily because of additional property, plant, and equipment investments across their respective segments. Ameren’s and Ameren Missouri’s depreciation and amortization expenses reflected a deferral to a regulatory asset of depreciation and amortization expenses pursuant to the PISA and the RESRAM. The PISA and RESRAM deferrals of depreciation and amortization expenses were $19$24 million and $13$19 million for the three months ended March 31, 2022 and 2021, respectively. The amount of depreciation and 2020, respectively.
amortization expenses included in base rates for PISA and RESRAM deferrals was updated when new customer rates became effective on February 28, 2022, pursuant to the December 2021 MoPSC electric rate order, which incorporated deferrals through September 30, 2021.
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Taxes Other Than Income Taxes
Increase (Decrease) by Segment
Total by Segment(a)
Overall Ameren Increase of $3$14 Million
aee-20210331_g12.jpgaee-20210331_g13.jpgaee-20220331_g12.jpgaee-20220331_g13.jpg
(a)Includes $2 million and $2 million at Ameren Transmission in the three months ended March 31, 20212022 and 2020,2021, respectively, and other/intersegment eliminations of $4 million and $3$4 million in the three months ended March 31, 20212022 and 2020,2021, respectively.
Ameren MissouriAmeren Illinois Natural GasOther/Intersegment Eliminations
Ameren Illinois Electric DistributionAmeren Transmission
Taxes other than income taxes increased $3$14 million in the three months ended March 31, 2021,2022, compared with the year-ago period, primarily because of a$6 million and $3 million increaseincreases in excise taxes at Ameren Illinois Natural Gas as a resultand Ameren Missouri, respectively, primarily because of increased sales.
Taxes other than income taxes also increased $4 million at Ameren Missouri because of increased property taxes, primarily resulting from property tax refunds received in 2021.
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Other Income, Net
Increase (Decrease) by Segment
Total by Segment
(a)Overall Ameren Increase of $25$14 Million
aee-20210331_g14.jpgaee-20210331_g15.jpgaee-20220331_g14.jpgaee-20220331_g15.jpg
Ameren MissouriAmeren Illinois Natural GasOther/Intersegment Eliminations
Ameren Illinois Electric DistributionAmeren Transmission
Other income, net, increased $25$14 million in the three months ended March 31, 2021,2022, compared with the year-ago period, primarily because of a $9 million increaseincreases in the non-service cost componentscomponent of net periodic benefit income atof $5 million, $4 million, and $2 million for Ameren Missouri and an $8 million decrease in charitable donations due to the absence of charitable donations made in the year-ago period pursuant to the March 2020 MoPSC electric rate order. Other income, net, also increased $3 million forIllinois Electric Distribution, activity not reported as part of a segment, primarily because of increased income from equity investments.and Ameren Illinois Natural Gas, respectively.
See Note 5 – Other Income, Net, under Part I, Item 1, of this report for additional information.
See Note 11 – Retirement Benefits under Part I, Item 1, of this report for more information on the non-service cost components of net periodic benefit income.
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Interest Charges
Increase (Decrease) by Segment
Total by SegmentOverall Ameren Increase of $7$4 Million
aee-20210331_g16.jpgaee-20210331_g17.jpgaee-20220331_g16.jpgaee-20220331_g17.jpg
Ameren MissouriAmeren Illinois Natural GasOther/Intersegment Eliminations
Ameren Illinois Electric DistributionAmeren Transmission
Interest charges increased $7$4 million in the three months ended March 31, 2021,2022, compared with the year-ago period, primarily due to abecause of issuances of long-term debt issuance at Ameren (parent) in April 2020, which increased interest charges by $7 million.March and November of 2021. Interest charges at Ameren and Ameren Missouri reflected a deferral to a regulatory asset of interest charges pursuant to PISA and RESRAM. The PISA and RESRAM deferrals of interest charges were $15$18 million and $9$15 million for the three months ended March 31, 2022 and 2021, respectively. A reduction in interest charges related to the increase in PISA and 2020, respectively.
RESRAM deferrals at Ameren Missouri was offset by the issuance of long-term debt at Ameren Missouri in June 2021, which increased interest charges by $3 million. The amount of interest charges included in base rates for PISA and RESRAM deferrals was updated when new customer rates became effective on February 28, 2022, pursuant to the December 2021 MoPSC electric rate order, which incorporated deferrals through September 30, 2021.
Income Taxes
The following table presents effective income tax rates for the three months ended March 31, 20212022 and 2020:2021:
Three Months(a)
Three Months(a)
2021202020222021
AmerenAmeren10 %12 %Ameren12 %10 %
Ameren MissouriAmeren Missouri(4)%8 %Ameren Missouri(4)%(4)%
Ameren IllinoisAmeren Illinois25 %24 %Ameren Illinois26 %25 %
Ameren Illinois Electric DistributionAmeren Illinois Electric Distribution22 %22 %Ameren Illinois Electric Distribution24 %22 %
Ameren Illinois Natural GasAmeren Illinois Natural Gas27 %26 %Ameren Illinois Natural Gas27 %27 %
Ameren Illinois TransmissionAmeren Illinois Transmission25 %24 %Ameren Illinois Transmission26 %25 %
Ameren TransmissionAmeren Transmission27 %26 %Ameren Transmission27 %27 %
(a)Estimate of the annual effective income tax rate adjusted to reflect the tax effect of items discrete to the three months ended March 31, 20212022 and 2020.2021.
See Note 12 – Income Taxes under Part I, Item 1, of this report for a reconciliation of the federal statutory corporate income tax rate to the effective income tax rate for the Ameren Companies.
The effective income tax rate was higher at Ameren Illinois Electric Distribution in the three months ended March 31, 2022, compared with the year-ago period, primarily because of lower amortization of excess deferred taxes.
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LIQUIDITY AND CAPITAL RESOURCES
Collections from our tariff-based revenues are our principal source of cash provided by operating activities. A diversified retail customer mix, primarily consisting of rate-regulated residential, commercial, and industrial customers, provides us with a reasonably predictable source of cash. In addition to using cash provided by operating activities, we use available cash, drawings under committed credit agreements, commercial paper issuances, and/or, in the case of Ameren Missouri and Ameren Illinois, short-term affiliate borrowings to support normal operations and temporary capital requirements. We may reduce our short-term borrowings with cash provided by operations or, at our
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discretion, with long-term borrowings, or, in the case of Ameren Missouri and Ameren Illinois, with capital contributions from Ameren (parent). As of March 31, 2022, there have been no material changes other than in the ordinary course of business related to cash requirements arising from these long-term commitments provided in Item 7 of the Form 10-K for the year ended December 31, 2021.
We expect to make significant capital expenditures over the next five years, supported by a combination of long-term debt and equity, as we invest in our electric and natural gas utility infrastructure to support overall system reliability, grid modernization, renewable energy targetstarget requirements, environmental compliance, and other improvements. For additional information about our long-term debt outstanding, including maturities due within one year, and the applicable interest rates, see Note 5 – Long-term Debt and Equity Financings under Part II, Item 8 of the Form 10-K and Note 4 – Long-term Debt and Equity Financings under Part I, Item 1, of this report. As part of its funding plan to fund the cash requirements for capital expenditures, Ameren is using newly issued shares of common stock, rather than market-purchased shares, to satisfy requirements under the DRPlus and employee benefit plans and expects to continue to do so through at least 2025.2026. Ameren expects these issuances to provide equity of about $100 million annually. In addition, to the issuance of common shares in connection with the 2021 settlement of the remaining portion of the forward sale agreement, Ameren plans to issue incremental equity of about $150 million in 2021, Ameren established an ATM program under which Ameren may offer and about $300sell from time to time up to $750 million each year from 2022of its common stock, which includes the ability to 2025. Ameren expects to establish an at-the-market equity program that will allow Ameren to meet equity needs through 2023,enter into forward sales agreements, subject to market conditions and other factors. There were no shares issued under the ATM program for the three months ended March 31, 2022. Ameren has entered into multiple forward sale agreements under the ATM program with various counterparties relating to 3.4 million shares of common stock. Ameren expects to settle the forward sale agreements by December 31, 2022. Ameren plans to issue approximately $300 million of equity each year from 2022 to 2026 in addition to issuances under the DRPlus and employee benefit plans. Ameren expects its equity to total capitalization ratio to be aboutapproximately 45% through December 31, 2025,2026, with the long-term intent to support solid investment-grade credit ratings. See Long-term Debt and Equity below and Note 4 – Long-term Debt and Equity Financings under Part I, Item 1, of this report for additional information on the 2021 settlement of the remaining portion ofATM program, including the forward sale agreement.agreements under the ATM program relating to common stock.
The use of cash provided by operating activities and short-term borrowings to fund capital expenditures and other long-term investments at the Ameren Companies frequently results in a working capital deficit, defined as current liabilities exceeding current assets, as was the case at March 31, 2021,2022, for Ameren, Ameren Missouri, and Ameren Illinois. With the credit capacity available under the Credit Agreements, and cash and cash equivalents, Ameren (parent), Ameren Missouri, and Ameren Illinois, collectively, had net available liquidity of $1.4$1.2 billion atMarch 31, 2021.2022. See Credit Facility Borrowings and Liquidity for additional information.
The following table presents net cash provided by (used in) operating, investing, and financing activities for the three months ended March 31, 20212022 and 2020:2021:
Net Cash Provided By (Used In)
Operating Activities		Net Cash Used In
Investing Activities		Net Cash Provided By
Financing Activities		Net Cash Provided By (Used In)
Operating Activities		Net Cash Used In
Investing Activities		Net Cash Provided By
Financing Activities
20212020Variance20212020Variance20212020Variance20222021Variance20222021Variance20222021Variance
AmerenAmeren$(35)$290 $(325)$(889)$(684)$(205)$795 $421 $374 Ameren$388 $(35)$423 $(780)$(889)$109 $391 $795 $(404)
Ameren MissouriAmeren Missouri(51)41 (92)(398)(328)(70)316 272 44 Ameren Missouri56 (51)107 (417)(398)(19)362 316 46 
Ameren IllinoisAmeren Illinois13 232 (219)(337)(323)(14)326 106 220 Ameren Illinois342 13 329 (342)(337)(5)4 326 (322)
Cash Flows from Operating Activities
Our cash provided by operating activities is affected by fluctuations of trade accounts receivable, inventories, and accounts and wages payable, among other things, as well as the unique regulatory environment for each of our businesses. Substantially all expenditures related to fuel, purchased power, and natural gas purchased for resale are recovered from customers through rate adjustment mechanisms, which may be adjusted without a traditional rate proceeding. Similar regulatory mechanisms exist for certain other operating expenses that can also affect the timing of cash provided by operating activities. The timing of cash payments for costs recoverable under our regulatory mechanisms differs from the recovery period of those costs. Additionally, the seasonality of our electric and natural gas businesses, primarily caused by seasonal customer rates and changes in customer demand due to weather, such as increased demand resulting from the extremely cold weather in mid-February 2021, significantly affects the amount and timing of our cash provided by operating activities.
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Ameren
Ameren’s cash provided by operating activities decreased $325increased $423 million in the first three months of 2021,2022, compared with the year-ago period. The following items contributed to the decrease:increase:
•A $309$471 million decreaseincrease resulting from increased purchases in natural gas for resalecustomer collections and purchased power costsdecreased expenditures under the PGA and FAC, primarily as a result of the significant increase infrom customer demand and prices for natural gas and electricity experienced in mid-February 2021 due to extremely cold weather which are recovered under the PGA, FAC, and Ameren Illinois’ purchased power rider; a net decreaseincrease attributable to other regulatory recovery mechanisms; and arecover mechanisms. See Outlook below for additional information about the extension of the collection period for the PGA related to the extremely cold weather in mid-February 2021.
•A $41 million decrease in customer collectionsthe cost of natural gas held in storage, primarily at Ameren Illinois, because of higher prices as a result of extremely cold winter weather in mid-February 2021.
•A $15 million decrease in major storm restoration costs at Ameren Illinois, primarily due to ana January 2021 storm.
The following items partially offset the increase in accounts receivable balances, which reflected anAmeren’s cash from operating activities between periods:
•A $25 million increase in amounts that were 30 days or greater pastnet collateral posted with counterparties, primarily due or that were a partto changes in the market prices of a deferred payment arrangement. These items were partially offset by increased customer collections resulting from base rate increases related to sales volumes and PISA at Ameren Missouri and increasedpower, natural gas, revenues at Ameren Illinois as a result of the January 2021 rate order.and other fuels.
•A $26$15 million increase in interest payments, primarily due to an increase in the average outstanding debt at Ameren (parent) and Ameren Missouri.debt.
•A $16$14 million decrease resulting from an increase in major storm restoration costscoal inventory levels at Ameren IllinoisMissouri, as less coal was purchased in 2021 due to a January 2021 storm.service-related delivery disruptions.
•A $9$12 million increase in property tax payments at Ameren Missouri, primarily due to higher assessed property tax values.
•A $7 million decrease in net collateral activity with counterparties, primarily resulting from changes in the market prices of power, natural gas, and other fuels.
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The following items partially offset the decrease in Ameren’s cash from operating activities between periods:
•A $35$10 million increase resulting from a decrease in coal inventory levels at Ameren Missouri due to increased consumption levels, compared with the year-ago period.
•An $11 million decrease in payments to settle ARO liabilities, primarily related to the closure of Ameren Missouri’s CCR storage facilities.for certain cloud computing arrangements.
Ameren Missouri
Ameren Missouri’s cash provided by operating activities decreased $92increased $107 million in the first three months of 2021,2022, compared with the year-ago period. The following items contributed to the decrease:
•A $111 million decrease resulting from increased purchases in natural gas for resale and purchased power costsperiod, primarily as a result of a $181 million increase from higher customer collections and decreased expenditures under the FAC and PGA due to the significant increase infrom customer demand and prices for natural gas and electricity experienced in mid-February 2021 due to extremely cold weather, which are recovered under the PGA and FAC and a net decreaseincrease attributable to other regulatory recovery mechanisms. TheseSee Outlook below for additional information about the extension of the collection period for the PGA related to the extremely cold weather in mid-February 2021.
The following items were partially offset by increased customer collections resultingthe increase in Ameren Missouri’s cash from base rate increases relatedoperating activities between periods:
•A $33 million increase in net collateral posted with counterparties, primarily due to sales volumeschanges in the market prices of power, natural gas, and PISA.other fuels.
•A $10$14 million decrease resulting from an increase in coal inventory levels, as less coal was purchased in 2021 due to service-related delivery disruptions.
•A $12 million increase in property tax payments, primarily due to higher assessed property tax values.
•A $9 million increase in interest payments, primarily due to an increase in the average outstanding debt.
•A $9$7 million increase in property tax payments primarily due to higher assessed property tax values.
•An $8 million decrease in net collateral activity with counterparties, primarily resulting from changes in the market prices of power, natural gas, and other fuels.
The following items partially offset the decrease in Ameren Missouri’s cash from operating activities between periods:
•A $35 million increase resulting from a decrease in coal inventory levels due to increased consumption levels, compared with the year-ago period.
•An $11 million decrease in payments to settle ARO liabilities, primarily related to the closure of CCR storage facilities.for certain cloud computing arrangements.
Ameren Illinois
Ameren Illinois’ cash provided by operating activities decreased $219increased $329 million in the first three months of 2021,2022, compared with the year-ago period. The following items contributed to the decrease:increase:
•A $202$289 million decreaseincrease resulting from increased purchases in natural gas for resalecustomer collections and purchased power costsdecreased expenditures under the PGA, primarily as a result of the significant increase infrom customer demand and prices for natural gas and electricity experienced in mid-February 2021 due to extremely cold weather which are recovered under the PGA and purchased power rider; a net decreaseincrease attributable to other regulatory recovery mechanisms; and arecover mechanisms. See Outlook below for additional information about the extension of the collection period for the PGA related to the extremely cold weather in mid-February 2021.
•A $39 million decrease in customer collections, primarily due to an increase in accounts receivable balances, which reflected an increase in amounts that were 30 days or greater past due or that were a partthe cost of a deferred payment arrangement. These items were partially offset by increased natural gas revenuesheld in storage because of higher prices as a result of the January 2021 rate order.extremely cold winter weather in mid-February 2021.
•A $16$15 million increasedecrease in major storm restoration costs, primarily due to a January 2021 storm.
•An $8 million increase in net collateral received from counterparties, primarily due to changes in the market prices of natural gas.
The increase in Ameren Illinois’ cash from operating activities between periods was partially offset by an $8 million increase in payments for certain cloud computing arrangements.
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Cash Flows from Investing Activities
Ameren’s cash used in investing activities increased $205decreased $109 million during the first three months of 2021,2022, compared with the year-ago period, primarily as a result of a $193$113 million increasedecrease in cash paid for the acquisition ofcapital expenditures, largely resulting from a reduction in expenditures related to wind generation assets and a $58 million increase in capital expenditures, which were driven by increases at Ameren Missouri, and Ameren Illinois, partially offset by a$17 million in insurance proceeds for the Callaway Energy Center’s generator. The decrease at ATXI primarily as a result of decreased Illinois Rivers transmission line expenditures, as it was placed in service in December 2020. The increase in Ameren’s cash used in investing activities was partially offset by a $34$15 million decreaseincrease due to the timing of nuclear fuel expenditures and a $13 million decrease due to net investment activity in the nuclear decommissioning trust fund at Ameren Missouri.
Ameren Missouri’s cash used in investing activities increased $70$19 million during the first three months of 2021,2022, compared with the year-ago period, primarily as a result of a $193 million increase in cash paid for the acquisition of wind generation assets and a $63 million increase in capital expenditures, primarily related to electric delivery infrastructure upgrades, electric distribution system reliability projects, and generator repairs to the Callaway Energy Center. The increase in Ameren Missouri’s cash used in investing activities was partially offset by a $139 million decrease inreturn of net money pool advances in the year-ago period, and a $34$15 million decreaseincrease due to the timing of nuclear fuel expenditures, andexpenditures. This increase was partially offset by a $13$120 million decrease duein capital expenditures, primarily resulting from a reduction in expenditures related to net investment activitywind generation assets, and $17 million in insurance proceeds for the nuclear decommissioning trust fund.Callaway Energy Center’s generator.
Ameren Illinois’ cash used in investing activities increased $14$5 million during the first three months of 2021,2022, compared with the year-ago period, due to anas a result of a $5 million increase in capital expenditures, primarily related to software and communication network projects.
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expenditures.
Cash Flows from Financing Activities
Cash provided by, or used in, financing activities is a result of our financing needs, which depend on the level of cash provided by operating activities, the level of cash used in investing activities, the level of dividends, and our long-term debt maturities, among other things. Due to extremely cold winter weather in mid-February 2021, Ameren Missouri and Ameren Illinois experienced higher than anticipated commodity costs for natural gas purchased for resale and purchased power, which contributed to the acceleration of the timing of certain planned 2021 debt issuances.
Ameren’s cash provided by consolidated financing activities increased $374decreased $404 million during the first three months of 2021,2022, compared with the year-ago period. During the first three months of 2022, Ameren utilized proceeds from net commercial paper issuances of $555 million along with cash provided by operating activities to fund, in part, investing activities. In addition, Ameren received aggregate cash proceeds of $5 million from the issuance of common stock under the DRPlus and the 401(k) plan. In comparison, during the first three months of 2021, Ameren utilized proceeds from the issuance of $450 million of long-term debt for general corporate purposes, including to repay then-outstanding short-term debt, and to fund, in part, investing activities. Ameren also utilized net proceeds from net commercial paper issuances of $399 million and cash on hand to fund operating activities, including increased purchases in natural gas for resale and purchased power costs as a result of the significant increase in customer demand and prices for natural gas and electricity experienced in mid-February 2021 due to extremely cold weather, and to fund, in part, investing activities. In addition, Ameren received aggregate cash proceeds of $113$125 million from the settlement of the remaining portion of the forward sale agreement of common stock that were used to fund a portionand the issuance of Ameren Missouri’s wind generation investments. In comparison, duringcommon stock under the first three months of 2020, Ameren utilized proceeds of $640 million from a long-term debt issuance, credit facility borrowings,DRPlus and net commercial paper issuances to repay at maturity long-term debt of $85 million and to fund, in part, investing activities.the 401(k) plan. During the first three months of 2021,2022, Ameren paid common stock dividends of $140$152 million, compared with $122$140 million in dividend payments in the year-ago period.period, as a result of an increase in both the dividend rate and the number of common shares outstanding.
Ameren Missouri’s cash provided by financing activities increased $44$46 million during the first three months of 2021,2022, compared towith the year-ago period. During the first three months of 2022, Ameren Missouri utilized proceeds from net commercial paper issuances of $363 million and cash provided by operating activities to fund, in part, investing activities. In comparison, during the first three months of 2021, Ameren Missouri utilized net proceeds from net commercial paper issuances of $204 million and cash on hand to fund operating activities, including increased purchases in natural gas for resale and purchased power costs as a result of the significant increase in customer demand and prices for natural gas and electricity experienced in mid-February 2021 due to extremely cold weather, and to fund, in part, investing activities. Additionally,In addition, Ameren Missouri utilizedreceived a $113 million capital contribution from Ameren (parent) to fund, in part, its wind generation expenditures. In comparison, during the first three months of 2020, Ameren Missouri utilized net proceeds from the issuance of $465 million in long-term debt to repay then-outstanding commercial paper issuances, including short-term debt incurred in connection with the repayment at maturity of long-term debt of $85 million. In 2020, Ameren Missouri repaid net short-term debt of $104 million and used cash provided by financing activities to fund, in part, investing activities.2021.
Ameren Illinois’ cash provided by financing activities increased $220decreased $322 million during the first three months of 2021,2022, compared with the year-ago period. During the first three months of 2021, Ameren Illinois utilized net proceeds from net commercial paper issuances of $323 million to fund operating activities, including increased purchases in natural gas for resale and purchased power costs as a result of the significant increase in customer demand and prices for natural gas and electricity experienced in mid-February 2021 due to extremely cold weather, and to fund, in part, investing activities. Ameren Illinois also received a $40 million capital contribution from Ameren (parent), during the first three months of 2021, compared to a $100 million capital contribution in the year-ago period.2021. In addition, Ameren Illinois repaid $19 million of money pool borrowings and redeemed $13 million of preferred stock induring the current year period.first three months of 2021.
See Long-term Debt and Equity in this section for additional information on maturities and issuances of long-term debt, issuances of common stock, and redemptions of preferred stock.
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Credit Facility Borrowings and Liquidity
The liquidity needs of the Ameren Companies are typically supported through the use of available cash, drawings under committed credit agreements, commercial paper issuances, and/or, in the case of Ameren Missouri and Ameren Illinois, short-term affiliate borrowings. See Note 3 – Short-term Debt and Liquidity under Part I, Item 1, of this report for additional information on credit agreements, commercial paper issuances, Ameren’s money pool arrangements and related borrowings, and relevant interest rates.
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The following table presents Ameren’s consolidated liquidity as of March 31, 2021:2022:
Available at March 31, 2022
Ameren (parent) and Ameren Missouri:
Missouri Credit Agreement – borrowing capacity
$1,200 
Less: Ameren (parent) commercial paper outstanding233300 
Less: Ameren Missouri commercial paper outstanding204528 
Less: Ameren Missouri letters of credit32 
Missouri Credit Agreement – subtotal760370 
Ameren (parent) and Ameren Illinois:
Illinois Credit Agreement – borrowing capacity
1,100 
Less: Ameren (parent) commercial paper outstanding129166 
Less: Ameren Illinois commercial paper outstanding323107 
Less: Ameren Illinois letters of credit1 
Illinois Credit Agreement – subtotal
647827 
Subtotal$1,4071,197 
Add: Cash and cash equivalents67 
Net Available Liquidity(a)
$1,4131,204 
(a)Does not include Ameren’s forward equity sale agreements. See Note 4 – Long-term Debt and Equity Financings under Part I, Item 1, of this report for additional information.
The Credit Agreements, among other things, provide $2.3 billion of credit until maturity in December 2024.2025. See Note 3 – Short-term Debt and Liquidity under Part I, Item 1, of this report for additional information on the Credit Agreements. During the three months ended March 31, 2021,2022, Ameren (parent), Ameren Missouri, and Ameren Illinois each issued commercial paper. Borrowings under the Credit Agreements and commercial paper issuances are based upon available interest rates at that time of the borrowing or issuance.
Ameren has a money pool agreement with and among its utility subsidiaries to coordinate and to provide for certain short-term cash and working capital requirements. As short-term capital needs arise, and based on availability of funding sources, Ameren Missouri and Ameren Illinois will access funds from the utility money pool, the Credit Agreements, or the commercial paper programs depending on which option has the lowest interest rates.
See Note 3 – Short-term Debt and Liquidity under Part I, Item 1, of this report for additional information on credit agreements, commercial paper issuances, Ameren’s money pool arrangements and related borrowings, and relevant interest rates.
The issuance of short-term debt securities by Ameren’s utility subsidiaries is subject to FERC approval under the Federal Power Act. In 2020,March 2022, the FERC issued ordersan order authorizing Ameren Missouri and Ameren Illinois to each issue up to $1 billion of short-term debt securities through March 2022 and2024. In 2020, the FERC issued an order authorizing Ameren Illinois to issue up to $1 billion of short-term debt securities through September 2022, respectively.2022. In July 2019,2021, the FERC issued an order authorizing ATXI to issue up to $300 million of short-term debt securities, which expires in July 2021.2023.
The Ameren Companies continually evaluate the adequacy and appropriateness of their liquidity arrangements for changing business conditions. When business conditions warrant, changes may be made to existing credit agreements or to other borrowing arrangements, or other arrangements may be made.
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Long-term Debt and Equity
The following table presents Ameren’s issuances (net of any issuance premiums or discounts) of long-term debt and equity, as well as maturities of long-term debt and redemptions of preferred stock for the three months ended March 31, 20212022 and 2020:2021:
Month Issued, Redeemed, or Matured20212020Month Issued, Redeemed, or Matured20222021
Issuances of Long-term DebtIssuances of Long-term DebtIssuances of Long-term Debt
Ameren:Ameren:Ameren:
1.75% Senior unsecured notes due 20281.75% Senior unsecured notes due 2028March$450 $— 1.75% Senior unsecured notes due 2028March$— $450 
Ameren Missouri:
2.95% First mortgage bonds due 2030March$— $465 
Total Ameren long-term debt issuancesTotal Ameren long-term debt issuances$450 $465 Total Ameren long-term debt issuances$— $450 
Issuances of Common StockIssuances of Common StockIssuances of Common Stock
Ameren:Ameren:Ameren:
DRPlus and 401(k) (a)
DRPlus and 401(k) (a)
Various$12 $13 
DRPlus and 401(k) (a)
Various$5 (b)$12 
Forward sale agreement (b)
February113 — 
Total common stock issuances (c)
$125 $13 
Total Ameren long-term debt and common stock issuances$575 $478 
Maturities of Long-term Debt
Ameren Missouri:
5.00% Senior secured notes due 2020February$— $85 
August 2019 forward sale agreement (c)
August 2019 forward sale agreement (c)
February— 113 
Total Ameren common stock issuances (d)
Total Ameren common stock issuances (d)
$5 $125 
Total Ameren long-term debt maturities$— $85 
Redemptions of Preferred StockRedemptions of Preferred StockRedemptions of Preferred Stock
Ameren Illinois:Ameren Illinois:Ameren Illinois:
6.625% Series6.625% SeriesMarch$12 $— 6.625% SeriesMarch$— $12 
7.75% Series7.75% SeriesMarch1 — 7.75% SeriesMarch— 1 
Total Ameren Illinois preferred stock redemptionsTotal Ameren Illinois preferred stock redemptions$13 $— Total Ameren Illinois preferred stock redemptions$— $13 
Total Ameren long-term debt maturities and preferred stock redemptions$13 $85 
(a)Ameren issued a total of 0.1 million and 0.20.1 million shares of common stock under its DRPlus and 401(k) plan in the three months ended March 31, 20212022 and 2020,2021, respectively.
(b)Excludes an $8 million receivable at March 31, 2022.
(c)Ameren issued 1.6 million shares of common stock to settle the remainder of the August 2019 forward sale agreement.
(c)(d)Excludes 0.50.4 million and 0.5 million shares of common stock valued at $33$31 million and $38$33 million issued for no cash consideration in connection with stock-based compensation for the three months ended March 31, 20212022 and 2020,2021, respectively.
See Note 4 – Long-TermLong-term Debt and Equity Financings under Part I, Item 1, of this report for additional information, including proceeds from issuances of long-term debt, including Ameren Missouri’s April 2022 issuance of first mortgage bonds, the use of those proceeds, and Ameren’s forward equity sale agreement.agreements, and the ATM program.
Indebtedness Provisions and Other Covenants
At March 31, 2021,2022, the Ameren Companies were in compliance with the provisions and covenants contained in their credit agreements, indentures, and articles of incorporation, as applicable, and ATXI was in compliance with the provisions and covenants contained in its note purchase agreement.agreements. See Note 3 – Short-term Debt and Liquidity under Part I, Item 1, of this report and Note 4 – Short-term Debt and Liquidity and Note 5 – Long-term Debt and Equity Financings under Part II, Item 8, of the Form 10-K for a discussion of provisions, (and applicable cross-default provisions)provisions, and covenants contained in our credit agreements, in ATXI’s note purchase agreement,agreements, and in certain of the Ameren Companies’ indentures and articles of incorporation.
We consider access to short-term and long-term capital markets to be a significant source of funding for capital requirements not satisfied by cash provided by our operating activities. Inability to raise capital on reasonable terms, particularly during times of uncertainty in the capital markets, could negatively affect our ability to maintain and expand our businesses. After assessing its current operating performance, liquidity, and credit ratings (see Credit Ratings below), Ameren, Ameren Missouri, and Ameren Illinois each believes that it will continue to have access to the capital markets on reasonable terms. However, events beyond Ameren’s, Ameren Missouri’s, and Ameren Illinois’ control may create uncertainty in the capital markets or make access to the capital markets uncertain or limited. Such events could increase our cost of capital and adversely affect our ability to access the capital markets.
Dividends
The amount and timing of dividends payable on Ameren’s common stock are within the sole discretion of Ameren’s board of directors. Ameren’s board of directors has not set specific targets or payout parameters when declaring common stock dividends, but it considers various factors, including Ameren’s overall payout ratio, payout ratios of our peers, projected cash flow and potential future cash flow requirements, historical earnings and cash flow, projected earnings, impacts of regulatory orders or legislation, and other key business
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considerations. Ameren expects its dividend payout ratio to be between 55% and 70% of annual earnings over the next few years. On May 7, 2021, Ameren’s board of directors declared a quarterly common stock dividend of 55 cents per share payable on June 30, 2021, to shareholders of record on June 9, 2021.
See Note 4 – Short-term Debt and Liquidity and Note 5 – Long-term Debt and Equity Financings under Part II, Item 8, of the Form 10-K for additional discussion of covenants and provisions contained in certain of the Ameren Companies’ financial agreements and articles of incorporation that would restrict the Ameren Companies’ payment of dividends in certain circumstances. At March 31, 2021,2022, none of these
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circumstances existed at Ameren, Ameren Missouri, or Ameren Illinois and, as a result, these companies were not restricted from paying dividends.
The following table presents common stock dividends declared and paid by Ameren Corporation to its common shareholders and by Ameren subsidiaries to their parent, Ameren Corporation, for the three months ended March 31, 20212022 and 2020:2021:
Three Months
20212020
Ameren$140 $122 
ATXI25 — 
Commitments
As of March 31, 2021, there have been no material changes other than in the ordinary course of business related to cash requirements arising from contractual obligations provided in Item 7 of the Form 10-K for the year ended December 31, 2020, with the exception of Ameren parent’s debt issuance discussed in Long-Term Debt and Equity section above.
Off-balance-sheet Arrangements
At March 31, 2021, none of the Ameren Companies had any significant off-balance-sheet financing arrangements, other than variable interest entities. See Note 1 – Summary of Significant Accounting Policies under Part I, Item 1, of this report for further detail concerning variable interest entities.
Three Months
20222021
Ameren$152 $140 
ATXI— 25 
Credit Ratings
Our credit ratings affect our liquidity, our access to the capital markets and credit markets, our cost of borrowing under our credit facilities and our commercial paper programs, and our collateral posting requirements under commodity contracts.
The following table presents the principal credit ratings by Moody’s and S&P, as applicable, effective on the date of this report:
Moody’sS&P
Ameren:
Issuer/corporate credit ratingBaa1BBB+
Senior unsecured debtBaa1BBB
Commercial paperP-2A-2
Ameren Missouri:
Issuer/corporate credit ratingBaa1BBB+
Secured debtA2A
Senior unsecured debtBaa1Not Rated
Commercial paperP-2A-2
Ameren Illinois:
Issuer/corporate credit ratingA3BBB+
Secured debtA1A
Senior unsecured debtA3BBB+
Commercial paperP-2A-2
ATXI:
Issuer credit ratingA2Not Rated
Senior unsecured debtA2Not Rated
A credit rating is not a recommendation to buy, sell, or hold securities. It should be evaluated independently of any other rating. Ratings are subject to revision or withdrawal at any time by the rating organization.
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Collateral Postings
Any weakening of our credit ratings may reduce access to capital and trigger additional collateral postings and prepayments. Such changes may also increase the cost of borrowing, resulting in an adverse effect on earnings. Cash collateral postings and prepayments made with external parties, including postings related to exchange-traded contracts, were $110 million for Ameren and Ameren Missouri and cash collateral posted by external parties were immaterial$35 million, $4 million, and $31 million for Ameren, Ameren Missouri, and Ameren Illinois, respectively, at March 31, 2021.2022. A sub-investment-grade issuer or senior unsecured debt rating (below “Baa3” from Moody’s or below “BBB-” from S&P) at March 31, 2021,2022, could have resulted in Ameren, Ameren Missouri, or Ameren Illinois being required to post additional collateral or other assurances for certain trade obligations amounting to $117$98 million, $104$68 million, and $13$30 million, respectively.
Changes in commodity prices could trigger additional collateral postings and prepayments. Based on credit ratings at March 31, 2021,2022, if market prices were 15% higher or lower than March 31, 20212022 levels in the next 12 months and 20% higher or lower thereafter through the end of the term of the commodity contracts, then Ameren and Ameren Missouri or Ameren Illinois could be required to post an immaterial amount, compared to each company’s liquidity, of collateral or provide other assurances for certain trade obligations.
OUTLOOK
Below are some key trends, events, and uncertainties that may reasonably affect our results of operations, financial condition, or liquidity, as well as our ability to achieve strategic and financial objectives, for 20212022 and beyond. The continued effect of the COVID-19 pandemic on our results of operations, financial position, and liquidity in subsequent periods will depend on its severity and longevity, future
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regulatory or legislative actions with respect thereto, and the resulting impact on business, economic, and capital market conditions. Although restrictions on social activities and nonessential businesses implemented in our service territories in 2020 have been relaxed, additional restrictions may be imposed in the future. We continue to assessmonitor the impacts the COVID-19 pandemic is having on our businesses, including but not limited to impacts on our liquidity; demand for residential, commercial, and industrial electric and natural gas services; changes in deferred payment arrangements for customers; the timing and extent to which recovery of incremental costs incurred, net of savings, and forgone customer late fee revenues at Ameren Missouri is allowed by the MoPSC; changes in our ability to disconnect customers for nonpayment; bad debt expense; supply chain operations; the availability of our employees and contractors; counterparty credit; capital construction; infrastructure operations and maintenance; energy-efficiency programs; and pension valuations. For additional information regarding recent rate orders, lawsuits, and pending requests filed with state and federal regulatory commissions, including those discussed below, see Note 2 – Rate and Regulatory Matters under Part I, Item 1, of this report and Note 2 – Rate and Regulatory Matters under Part II, Item 8, of the Form 10-K.
Operations
•In the first three months of 2021,2022, our sales volumes, which have been, and continue to be, affected by the COVID-19 pandemic, among other things, were comparable to the same period in 2020,2021, excluding the estimated effects of weather and customer energy efficiencyenergy-efficiency programs. We expectWhile total sales volume levels were also comparable to pre-pandemic levels, there has been a gradual improvementshift in sales volumes by customer class, which began in 2021, compared to 2020. Our customers’ payment for services has been adversely affected by the COVID-19 pandemic, which led to2020, with an increase in our accounts receivable balances that are past due or that areresidential sales, and a part of a deferred payment arrangement.decrease in commercial and industrial sales. Because of their regulatory frameworks, Ameren Illinois’ and ATXI’s revenues are largely decoupled from changes in sales volumes. See the Results of Operations section above for additional information on our accounts receivable balances, Ameren Illinois’ electric and natural gas bad debt riders, and changes in Ameren Missouri’s sales volumes in the first three months of 2021, compared to the same period in 2020, and sales volumes expected in 2021, compared to 2020. Additionally, see Note 2 – Rate and Regulatory Matters under Part I, Item 1, of this report and Note 2 – Rate and Regulatory Matters under Part II, Item 8, of the Form 10-K for information on Ameren Missouri’s and Ameren Illinois’ reinstatement of customer disconnection and late fee charges for non-payment, accounting authority orders issued by the MoPSC related to Ameren Missouri's electric and natural gas services to allow Ameren Missouri to accumulate certain costs incurred, net of savings, and forgone customer late fee revenues related to the COVID-19 pandemic for consideration of recovery in the current electric and natural gas service regulatory rate reviews, and orders issued by the ICC in a service disconnection moratorium proceeding, which required Ameren Illinois to implement more flexible credit and collection practices and allowed for recovery of costs incurred related to the COVID-19 pandemic and forgone late fees.
•The PISA permits Ameren Missouri to defer and recover 85% of the depreciation expense and earn a return at the applicable WACC on investments in certain property, plant, and equipment placed in service, and not included in base rates. The regulatory asset for accumulated PISA deferrals also earns a return at the applicable WACC, with all approved PISA deferrals added to rate base prospectively and recovered over a period of 20 years following a regulatory rate review. Additionally, under the RESRAM, Ameren Missouri is permitted to recover the 15% of depreciation expense not recovered under the PISA, and earn a return at the applicable WACC for investments in renewable generation plant placed in service.service to comply with Missouri’s renewable energy standard. Accumulated RESRAM deferrals earn carrying costs at short-term interest rates. The PISA and the RESRAM mitigate the effects of regulatory lag between regulatory rate reviews. Those investments not eligible for recovery under the PISA and the remaining 15% of certain property, plant, and equipment placed in service, unless eligible for recovery under the RESRAM, remain subject to regulatory lag. Ameren Missouri recognizes thedefers its cost of debt onrelating to PISA deferrals in revenue, instead of usingeligible investments as an offset to interest charges with the difference between the applicable WACC with the differenceand its cost of debt recognized in revenues when recovery of such deferrals is reflected in customer rates. As a result of the PISA election, additional provisions of the law apply to Ameren Missouri, including
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limitations on electric customer rate increases. Ameren Missouri does not expect to exceed these rate increase limitations in 2021.2022. Both the rate increase limitation and the PISA are effective through December 2023, unless Ameren Missouri requests and the MoPSC approves an extension through December 2028. In May 2022, Senate Bill 745 passed the Missouri General Assembly and was sent to the governor for approval. If enacted, among other things, the bill would extend the PISA election through December 2028 and allow for an additional five-year extension through December 2033 if requested by Ameren Missouri and approved by the MoPSC. In addition, a 2.5% limit on customer rate increases resulting from PISA deferrals would become effective beginning in 2024. For information on the rate increase limitation effective through 2023, see Note 2 – Rate and Regulatory Matters under Part II, Item 8, of the Form 10-K.
•In 2018, the MoPSC issued an order approving Ameren Missouri’s MEEIA 2019 plan. The plan includes a portfolio of customer energy-efficiency programs through December 20222023 and low-income customer energy-efficiency programs through December 2024, along with a rider. Ameren Missouri intends to invest $290approximately $360 million over the life of the plan, including $65 million in 2021 and $70 million in 2022.2022 and $75 million in 2023. The plan includes the continued use of the MEEIA rider, which allows Ameren Missouri to collect from, or refund to, customers any difference in actual MEEIA program costs and related lost electric margins and the amounts collected from customers. In addition, the plan includes a performance incentive that provides Ameren Missouri an opportunity to earn additional revenues by achieving certain customer energy-efficiency goals. If the target goals were achieved for 2020, additional revenues of $10 million would be recognized in 2021 and if target goals are achieved for 2021 and 2022, additional revenues of $24 million would be recognized in 2022. Incremental2022, and, if target goals are achieved for 2023, additional revenues of $3$13 million $3 million, and $1 million may be earned for 2020, 2021, and 2022, respectively, and would be recognized in the respective following year if Ameren Missouri exceeds its targeted goals. Ameren Missouri’s ability to achieve and/or exceed targeted goals could be affected by the COVID-19 pandemic. For the year ended December 31, 2020, Ameren Missouri recognized $6 million in revenues related to MEEIA performance incentives.2023.
•In MarchDecember 2021, Ameren Missouri filed a request with the MoPSC seeking approval to increase its annual revenues for electric service by $299 million. The MoPSC proceeding relating to the proposed electric service rate changes will take place over a period of up to 11 months, with a decision by the MoPSC expected by February 2022 and new rates effective by March 2022. Ameren Missouri cannot predict the level of any electric service rate change the MoPSC may approve, or whether any rate change that may eventually be approved will be sufficient for Ameren Missouri to recover its costs and earn a reasonable return on its investments when the rate change goes into effect.
•In March 2020, the MoPSC issued an order in Ameren Missouri’s July 20192021 electric service regulatory rate review, resulting in a decreasean increase of $32$220 million to Ameren Missouri’s annual revenue requirement for electric retail service. TheAs a result of this order, also approvedAmeren Missouri expects a change in rate design, which will result in winter rates appliedyear-over-year increase to May usage and summer rates applied to September usage beginning in 2021. Previously, blended rates were applied to both months’ usage. The quarterly year-over-year increases/(decreases)2022 earnings, compared to 2021, primarily in the third quarter of 2022 due to seasonal electric customer rates and higher demand during the summer. Ameren Missouri expects earnings to increase approximately $23 million in the third quarter of 2022, compared to the same periodsperiod in 2020, from the effect of the change in rate design are estimated at approximately ($50) million and $50 million for the second and third quarter comparisons, respectively.2021.
•Ameren Illinois and ATXI use a forward-looking rate calculation with an annual revenue requirement reconciliation for each company’s electric transmission business. Based on expected rate base growth and the currently allowed 10.52% ROE, which includes a 50 basis point incentive adder for participation in an RTO, the revenue requirements included in 20212022 rates for Ameren Illinois’ and ATXI’s electric transmission businesses are $380$422 million and $200$195 million, respectively. These revenue requirements represent an increase in Ameren Illinois’ revenue requirement of $42 million and a decrease in ATXI’s revenue requirements of $67$5 million and $8 million, respectively, from the revenue requirements reflected in 20202021 rates, primarily due to higher expected rate base growth.at Ameren Illinois and a lower expected rate base at ATXI. These
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rates will affect Ameren Illinois’ and ATXI’s cash receipts during 2021,2022, but will not determine their respective electric transmission service operating revenues, which will instead be based on 20212022 actual recoverable costs, rate base, and a return on rate base at the applicable WACC as calculated under the FERC formula ratemaking framework.
•The allowed base ROE for FERC-regulated transmission rates previously charged under the MISO tariff is the subject of an appeal filed with the United States Court of Appeals for the District of Columbia Circuit. Depending on the outcome of the appeal, the transmission rates charged during previous periods and the currently effective rates may be subject to change. Additionally, in March 2019, the FERC issued a Notice of Inquiry regarding its transmission incentives policy. In March 2020, the FERC issued a Notice of Proposed Rulemaking on its transmission incentives policy, which addressed many of the issues in the Notice of Inquiry on transmission incentives. The Notice of Proposed Rulemaking included an increased incentive in the allowed base ROE for participation in an RTO to 100 basis points from the current 50 basis points and revised the parameters for awarding incentives, while limiting the overall incentives to a cap of 250 basis points, among other things. In April 2021, the FERC issued a Supplemental Notice of Proposed Rulemaking, which proposes to modify the Notice of Proposed Rulemaking’s incentive for participation in an RTO by limiting this incentive for utilities that join an RTO to 50 basis points and only allowing them to earn the incentive for three years, among other things. If this proposal is included in a final rule, Ameren Illinois and ATXI would no longer be eligible for the 50 basis point RTO incentive adder, prospectively. The FERC is under no deadline to issue a final rule on this matter. Ameren is unable to predict the ultimate impact of any changes to the FERC’s incentives policy, or any further order on base ROE. A 50 basis point change in the FERC-allowed base ROE would affect Ameren’s and Ameren Illinois’ annual net income by an estimated $11$12 million and $7$8 million, respectively, based on each company’s 20212022 projected rate base.
•Ameren Illinois’ electric distribution service performance-based formula ratemaking framework under the IEIMA allows Ameren Illinois to reconcile electric distribution service rates to its actual revenue requirement on an annual basis.basis to reflect actual recoverable costs incurred and a return at the applicable WACC on year-end rate base. If a given year’s revenue requirement varies from the amount collected from customers, an adjustment is made to electric operating revenues with an offset to a regulatory asset or liability to
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reflect that year’s actual revenue requirement, independent of actual sales volumes. The regulatory balance is then collected from, or refunded to, customers within two years from the end of the year. Unless extendedPursuant to an order issued by legislation, the abilityICC in March 2021, Ameren Illinois expects to conductuse the current IEIMA formula framework to establish annual updates to performance-based formulacustomer rates expireseffective through 2023, and reconcile the related revenue requirement for customer rates established for 2022 and 2023. As such, Ameren Illinois’ 2022 and 2023 revenues would reflect each year’s actual recoverable costs, year-end rate base, and a return at the end of 2022. If not extended, Ameren Illinois would be required to establish future rates through a traditional regulatory rate reviewapplicable WACC, with the ROE component based on the annual average of the monthly yields of the 30-year United States Treasury bonds plus 580 basis points. For more information on the March 2021 ICC which would alloworder, see Note 2 – Rate and Regulatory Matters under Part II, Item 8, of the use of a future test year. TheForm 10-K. By law, the decoupling provisions extend beyond the end of 2022 by law,existing performance-based formula ratemaking, which ensures that Ameren Illinois’ electric distribution revenues authorized in a regulatory rate review are not affected by changes in sales volumes.
•Pursuant to the IETL, which was enacted in September 2021, Ameren Illinois is actively pursuing constructive ratemaking. In March 2021,may file an MYRP with the ICC issued an order approving Ameren Illinois’ requested tariff to reconcile itsestablish base rates for electric distribution service revenue requirementto be charged to customers for each calendar year of a period of up to two years after the final customer rate update under performance-based formula ratemaking. To utilize the reconciliation, the ICC-approved tariff requiresfour-year period. An MYRP would allow Ameren Illinois to reconcile electric distribution service rates to its actual revenue requirement on an annual basis, subject to a reconciliation cap and adjustments to the ICC-determined ROE for performance incentives and penalties. Ameren Illinois’ existing riders will remain effective whether it elects to file an MYRP or a traditional regulatory rate review for itsreview. Additionally, electric distribution service which mayrevenues would continue to be based ondecoupled from sales volumes under either election. Subject to a future test year,constructive outcome regarding the ICC’s determination of performance metrics, Ameren Illinois anticipates filing an MYRP by mid-January 2023, with rates effective beginning in 2024. If Ameren Illinois does not file an MYRP for rates effective beginning in 2024, its next opportunity to file an MYRP would be for rates effective beginning in 2028. For additional information regarding ratemaking under an MYRP, including details of the endreconciliation cap, see Note 2 – Rate and Regulatory Matters under Part II, Item 8, of March in the year following the last year in which an annual performance-based formula rate update was permitted.Form 10-K.
•In 2020,2021, the ICC issued an order in Ameren Illinois’ annual update filing that approved a $49$58 million decreaseincrease in Ameren Illinois’ electric distribution service rates beginning in January 2021. Illinois law provides for an annual reconciliation of the electric distribution revenue requirement as is necessary to reflect the actual costs incurred and a return at the applicable WACC on year-end rate base in a given year with the revenue requirement that was reflected in customer rates for that year. Consequently,2022. Ameren Illinois’ 20212022 electric distribution service revenues will be based on its 20212022 actual recoverable costs, 20212022 year-end rate base, and a return at the applicable WACC, with the ROE component based on the annual average of the monthly yields of the 30-year United States Treasury bonds plus 580 basis points. As of March 31, 2021,2022, Ameren Illinois expects its 20212022 electric distribution year-end rate base to be $3.7$3.9 billion. With or without extension of the formula ratemaking framework, the 2021The 2022 revenue requirement reconciliation adjustment will be collected from, or refunded to, customers in 2023.2024. A 50 basis point change in the annual average of the monthly yields of the 30-year United States Treasury bonds would result in an estimated $10$11 million change in Ameren’s and Ameren Illinois’ annual net income, based on Ameren Illinois’ 20212022 projected year-end rate base, including electric energy-efficiency investments. Ameren Illinois’ allowed ROE for the first three months of 20212022 was based on an estimated annual average of the monthly yields of the 30-year United States Treasury bonds of 2.37%2.66%.
•In April 2021,2022, Ameren Illinois filed its annual electric distribution service performance-based formula rate update with the ICC to be used for 2023 rates, requesting an increase of $64 million in its rates.$83 million. An ICC decision in this proceeding is expectedrequired by December 2021,2022, with new rates effective in January 2022.2023. These rates will affect Ameren Illinois' cash receipts during 2022,2023, but will not affect electric distribution service
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revenues, which will be based on 20222023 actual recoverable costs, 20222023 year-end rate base, and a return at the applicable WACC as calculated under the Illinois performance-based formula ratemaking framework.
•In January 2021, the ICC issued an order in Ameren Illinois’ February 2020 natural gas delivery service regulatory rate review, which resulted in an increase to its annual revenues for natural gas delivery service of $76 million. The new rates became effective in January 2021. As a result of this order, the rate base under the QIP was reset to zero. Ameren Illinois used a 2021 future test year in this proceeding. The order also approved the implementation of a change in rate design, which concentrates more revenues in the winter heating season due to an increase in volumetric rates and a decrease in fixed customer rates. As such, the change in rate design will have an impact on interim period 2021 earnings, compared to 2020, but is not expected to materially affect annual earnings comparisons. The quarterly year-over-year increases/(decreases) to 2021 earnings, compared to the same periods in 2020, from the combined effect of the rate increase and the change in rate design are estimated at $17 million, ($7) million, and $7 million for the first quarter, third quarter, and fourth quarter comparisons, respectively.
•Pursuant to Illinois law, Ameren Illinois’ electric energy-efficiency investments are deferred as a regulatory asset and earn a return at the applicable WACC, with the ROE component based on the annual average of the monthly yields of the 30-year United States Treasury bonds plus 580 basis points. The allowed ROE on electric energy-efficiency investments can be increased or decreased by up to 200 basis points, depending on the achievement of annual energy savings goals. While the ICC has approved a plan for Ameren Illinois plans to invest up to approximately $100 million per year in electric energy-efficiency programs through 2025. While the ICC has approved a plan consistent with this spending level through 2021,2025, the ICC has the ability to reduce the amount of electric energy-efficiency savings goals in future plan program years if there are insufficient cost-effective programs available, which could reduce the investments in electric energy-efficiency programs. The electric energy-efficiency program investments and the return on those investments are collected from customers through a rider and are not included inrecovered through the electric distribution service performance-based formula ratemaking framework. In March 2021,April 2022, Ameren Illinois filed a revised energy-efficiency plan with the ICC an energy-efficiency plan which includes annual investmentsto invest approximately $120 million per year in electric energy-efficiency programs upthrough 2025, which reflects the increased level of annual investments allowed under the IETL. The ICC is under no deadline to approximately $100 million per year from 2022 through 2025. A decision by the ICCissue an order in this proceeding is expected by September 2021.proceeding.
•During its return to full power after the completion of the lastAmeren Missouri's scheduled refueling and maintenance outage in late December 2020, theat its Callaway Energy Center experienced a non-nuclear operating issue related to its generator. A thorough investigation of this matter was conducted. Work continues to replace certain key components of the generatorbegan in order to return the energy center to service.April 2022. Ameren Missouri expects generator repairs ofto incur approximately $65 million, which are expected to be largely capital expenditures. Due to the long lead time for the manufacture, repair, and installation of the components, the energy center is expected to return to service in July 2021. In April 2021, Ameren Missouri’s insurance claims were accepted by NEIL, which are expected to cover a significant portion of the
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capital expenditures and replacement power costs. Replacement power costs of up to $4.5 million weekly are covered by insurance after March 17, 2021. Insurance recoveries related to replacement power costs will be reflected in electric operating revenues and included in net energy costs under the FAC. Insurance recoveries related to the capital expenditures will be reflected as a reduction to property, plant, and equipment. For the duration of the unplanned outage, Ameren Missouri expects an increase to its purchased power expense and a decrease to its off-system sales, with changes to both items recovered through the FAC. Ameren Missouri does not expect a significant increase to other operations and maintenance expense as a result of the unplanned outage. Pursuant to a February 2020 MoPSC order, Ameren Missouri deferred, as a regulatory asset, a total of $39$50 million in maintenance expenses related to itsthe outage. During a scheduled fall 2020 outage,refueling, which it began to amortize in January 2021. Theoccurs every 18 months, maintenance expenses are deferred as a regulatory asset will beand amortized until the completion of the next refueling and maintenance outage. During an outage, depending on the availability of its other generation sources and the market prices for power, Ameren Missouri’s purchased power costs may increase and the amount of excess power available for sale may decrease versus non-outage years. Changes in purchased power costs and excess power available for sale are included in the FAC, which results in limited impacts to earnings. In addition, Ameren Missouri may incur increased non-nuclear energy center maintenance costs in non-outage years. Ameren Missouri’s next refueling and maintenance outage at its Callaway energy center is scheduled for the fall of 2023.
•In December 2021, Ameren Missouri filed a motion with the United States District Court for the Eastern District of Missouri to modify a September 2019 remedy order issued by the district court to allow the retirement of the Rush Island Energy Center in advance of its previously expected useful life in lieu of installing a flue gas desulfurization system. The district court is under no deadline to issue a ruling revising the remedy order. In January 2022, the MISO completed a preliminary informational assessment regarding potential impacts of the retirement to the regional electric power system, which indicated transmission upgrades and voltage support would be needed in advance of the retirement of the Rush Island Energy Center to address reliability concerns. In February 2022, Ameren Missouri formally notified the MISO of its intent to retire the Rush Island Energy Center and requested the MISO to perform a final reliability assessment, which is expected to be completed in May 2022. The MISO must also separately approve the specific upgrades and transmission support required to address reliability concerns noted in the final assessment. Additionally, the MISO will determine whether reliability concerns require the Rush Island Energy Center to be classified as a system support resource, which should continue operating until the completion of to-be-specified transmission upgrades. If the Rush Island Energy Center were identified as a system support resource, an agreement detailing the manner of and time for continued operation would be filed with the FERC for approval. The district court has the authority to determine the retirement date and operating parameters for the Rush Island Energy Center and is not bound by the MISO determination or FERC’s approval. For additional information on the NSR and Clean Air Act litigation, see Note 9 – Commitments and Contingencies under Part I, Item 1, of this report. Ameren Missouri expects to file an update to the 2020 IRP with the MoPSC in June 2022 to reflect the planned acceleration of the retirement of the Rush Island Energy Center from 2039, the retirement year for the facility as reflected in the 2020 IRP. In February 2022, the MoPSC issued an order directing the MoPSC staff to review Ameren Missouri’s planned accelerated retirement of the Rush Island Energy Center, including potential impacts on the reliability and cost of Ameren Missouri’s service to its customers, Ameren Missouri’s plans to mitigate the customer impacts of the accelerated retirement, and the prudence of Ameren Missouri’s actions and decisions with regard to the Rush Island Energy Center, among other things. In April 2022, the MoPSC staff filed an initial report with the MoPSC in which the staff concluded early retirement of the Rush Island Energy Center may cause reliability concerns. The MoPSC staff is under no deadline to complete this review. As of December 31, 2021, and March 31, 2022, Ameren and Ameren Missouri classified the remaining net book value of the Rush Island Energy Center as plant to be abandoned, net, within “Property, Plant, and Equipment, Net” on Ameren’s and Ameren Missouri’s balance sheets. As part of the assessment of any potential future abandonment loss, consideration will be given to rate and securitization orders issued by the MoPSC to Ameren Missouri and to orders issued to other Missouri utilities with similar facts.
•In January 2022, Ameren Missouri received notice of a proposed determination by the EPA that it has rejected Ameren Missouri’s requests to extend the timeline for operating certain impoundments located at the Sioux and Meramec energy centers. Pursuant to the terms of the proposed determination, compliance with the CCR Rule’s requirements for closure of the impoundments would be required 135 days after the EPA issues a final determination, which Ameren Missouri expects to be issued in the spring of 2022. If Ameren Missouri was no longer able to use the surface impoundments at the Sioux or Meramec energy centers, Ameren Missouri would not be able to operate the energy centers unless an alternative for handling the CCR material was available. Ameren Missouri will retire the Meramec Energy Center in 2022, and construction is underway to complete a CCR Rule-compliant impoundment at the Sioux Energy Center to allow for continued operations. Additionally, Ameren Missouri is seeking a reliability determination from the MISO, which, if
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granted and accepted by the EPA, would extend the deadline to comply with the requirement to close the surface impoundments and allow the energy centers to operate. Ameren expects the MISO determination to be completed in June 2022. Ameren Missouri does not expect that this matter will have a material adverse effect on its results of operations, financial position, or liquidity.
•The IETL established emission standards that became effective in September 2021. Ameren Missouri's natural gas-fired energy centers in Illinois are subject to limits on emissions, including CO2 and NOx, equal to their unit-specific average emissions from 2018 through 2020, for any rolling twelve-month period beginning October 1, 2021, through 2029. Further reductions to emissions limits will become effective between 2030 and 2040, which could limit the operations of Ameren Missouri's five natural gas-fired energy centers located in the state of Illinois, and will result in the closure of the Venice Energy Center by 2030. These energy centers are utilized to support peak loads. Subject to conditions in the IETL, these energy centers may be allowed to exceed the emissions limits in order to maintain reliability of electric utility service as necessary. Ameren Missouri is reviewing the emission standards and the effect they may have on its generation strategy, including any increases in capital expenditures or operating costs, and changes to the useful life of the Venice Energy Center. Ameren Missouri expects to file an update to the 2020 IRP with the MoPSC in June 2022 to reflect, among other things, the impact of these new emissions standards.
•In April 2022, the MISO released the results of its 2022 capacity auction, which projected a capacity shortage in the central region of the MISO footprint, which includes Ameren Missouri’s and Ameren Illinois’ service territories. The projected shortage resulted in higher capacity prices for June 2022 through May 2023, and the MISO indicated that the shortage may lead to temporary, controlled interruptions of service to maintain system reliability.
•We are observing inflationary pressures on the prices of commodities, labor, services, materials, and supplies. Ameren Missouri and Ameren Illinois are generally allowed to pass on to customers prudently incurred costs for fuel, purchased power, and natural gas supply. Additionally, for certain non-commodity cost changes, the use of trackers, riders, and formula ratemaking, as applicable, mitigates our exposure. The inflationary pressures could impact our ability to control costs and/or make substantial investments in our businesses, including our ability to recover costs and investments, and to earn our allowed ROEs within frameworks established by our regulators, while maintaining rates that are affordable to our customers. Based on estimated power prices and customer demand, the capacity price set by the April 2022 MISO auction, and the amounts of energy and capacity hedged through IPA procurement events, Ameren Illinois estimates an increase to purchased power costs for calendar year 2022, compared to 2021, of approximately $400 million. The actual increase to purchased power costs will vary due to differences between estimated and realized power prices as well as customer demand, which will be affected by changes in customers' elections to use Ameren Illinois or an alternative retail electric supplier for their energy needs. Because of the power procurement riders, the difference between actual purchased power costs and costs billed to customers in a given period is deferred as a regulatory asset or liability. The deferred amount is either billed or refunded to customers in a subsequent period. These pass-through costs do not affect Ameren Illinois' net income, as any change in costs are offset by a corresponding change in revenues.
•Ameren Missouri and Ameren Illinois continue to make infrastructure investments and expect to seek increases to electric and natural gas rates to recover the cost of investments and earn an adequate return. Ameren Missouri and Ameren Illinois will also seek new, or to maintain existing, legislative solutions to address regulatory lag and to support investment in their utility infrastructure for the benefit of their customers. Ameren Missouri and Ameren Illinois continue to face cost recovery pressures, including limited economic growth in their service territories, increasing inflation, economic impacts of the COVID-19 pandemic, customer conservation efforts, the impacts of additional customer energy-efficiency programs, and increased customer use of increasingly cost-effective technological advances, including private generation and energy storage. However, over the long-term, we expect the decreased demand to be partially offset by increased demand resulting from increased electrification of the economy for efficiencies and as a means to address economy-wide CO2 emission concerns. We expect that increased investments, including expected future investments for environmental compliance, system reliability improvements, and potential new generation sources, will result in rate base and revenue growth but also higher depreciation and financing costs.
Liquidity and Capital Resources
•OurWhile our customers’ payment for our services hashad previously been adversely affected by the COVID-19 pandemic, resulting in a decreasepayment activity has returned to our cash flow from operations. See the Results of Operations section above for additional information on our accounts receivable balances. Further,levels more comparable to pre-pandemic levels. However, our liquidity and our capital expenditure plans could be adversely affected by other impacts resulting from the COVID-19 pandemic, including but not limited to potential impacts on our ability to access the capital markets on reasonable terms and when needed Ameren Missouri’s expected wind generation additions remaining in 2021, and the timing of tax payments and the utilization of tax credits. We expect to make significant capital expenditures to improve our electric and natural gas utility infrastructure, however, disruptions to the capital markets and the ability of our suppliers and contractors to perform as required under their contracts could impact the execution of our capital investment strategy. For further discussion on the impacts to our ability to access the capital markets, and Ameren Missouri’s expected wind generation additions remaining in 2021, see below.
•In February 2021,2022, Ameren Missouri filed an update to its Smart Energy Plan with the MoPSC, which includes a five-year capital investment overview with a detailed one-year plan for 2021.2022. The plan is designed to upgrade Ameren Missouri’s electric infrastructure
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and includes investments that will upgrade the grid and accommodate more renewable energy. Investments under the plan are expected to total approximately $8.4 billion over the five-year period from 20212022 through 2025,2026, with expenditures largely recoverable under the PISA and the RESRAM. The planned investments in 2024 and 2025through 2026 are based on the assumption that Ameren Missouri requests and receives MoPSC approval of an extension of the PISA throughfrom December 2023 to December 2028. For additional information on Senate Bill 745, and its impact on the PISA, see above.
•In connection with Ameren Missouri’s 2020 IRP, Ameren established a goal of achieving net-zero carbon emissions by 2050. Ameren is also targeting a 50% CO2 emission reduction by 2030 and an 85% reduction by 2040 from the 2005 level. The plan, which is subject to reviewAmeren’s CO2 emission reduction targets encompass direct emissions from Ameren Missouri’s and Ameren Illinois’ operations, with nearly all of those emitted by Ameren Missouri’s generation fleet. In 2021, the MoPSC forissued an order affirming the plan’s compliance with Missouri law,law. The plan targets cleaner and more diverse sources of energy generation, including solar, wind, hydro, and nuclear power, and supports increased investment in new energy technologies. It also includes expanding renewable sources by adding 3,100 MWs of renewable generation by the end of 2030 and a total of 5,400 MWs of renewable generation by 2040. These amounts include 700 MWs related to the High Prairie Renewable and Atchison renewableRenewable energy centers, which will support Ameren Missouri’s compliance with the state of Missouri’s requirement of achieving 15% of native load sales from renewable energy sources beginningthat began in 2021. The plan also includes advancingaccelerating the retirement dates of the Sioux and Rush Island coal-fired energy centers to 2028 and 2039, respectively, which are subject to the approval of a change in the assets’ depreciable lives by the MoPSC in Ameren Missouri’s current electric service regulatory rate review, the continued implementation of customer energy-efficiency programs, and the expectation that Ameren Missouri will seek NRC approval for an extension of the operating license for the Callaway Energy Center beyond its current 2044 expiration date. Additionally, the plan includes retiring the Meramec and Labadie coal-fired energy centers at the end of their useful lives (by 2022 and 2042, respectively). Ameren Missouri’s plan could be affected by, among other factors: Ameren Missouri’s ability to obtain a certificatecertificates of convenience and necessity from the MoPSC, and any other required approvals for the addition of renewable resources, retirement of energy centers, and new or continued customer energy-efficiency programs; the ability to enter into build-transfer agreements for renewable generation and acquire that generation at a reasonable cost; the ability of developers to meet contractual commitments and timely complete projects, which is dependent upon the availability of necessary labor, materials, and equipment, including those that are affected by the disruptions in the global supply chain caused by the COVID-19 pandemic or government actions, among other things; changes in the scope and timing of projects; the availability of federal production and investment tax credits related to renewable energy and Ameren
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Missouri’s ability to use such credits; the cost of wind, solar, and other renewable generation and storage technologies; changes in environmental regulations, including those related to carbon emissions; energy prices and demand; and Ameren Missouri’s ability to obtain timelynecessary rights-of-way, easements, and transmission interconnection agreements with the MISO or other RTOs at an acceptable cost.cost and in a timely fashion. In December 2021, the MoPSC issued an order in Ameren Missouri’s 2021 electric service regulatory rate review, which, among other things, approved a change in the depreciable lives of the Sioux and Rush Island energy centers’ assets consistent with Ameren Missouri’s 2020 IRP. Due to the NSR and Clean Air Act Litigation discussed in Note 9 – Commitments and Contingencies under Part I, Item 1, of this report, Ameren Missouri plans to retire the Rush Island Energy Center prior to the 2039 date discussed above. Ameren Missouri expects to file an update to the 2020 IRP with the MoPSC in June 2022 to reflect an accelerated retirement date for the Rush Island Energy Center and the impact of new emission standards pursuant to the IETL, as discussed in Note 9 – Commitments and Contingencies, among other things. The next integrated resource plan is expected to be filed in September 2023.
•Missouri law allows Missouri electric utility companies to petition the MoPSC for a financing order to authorize the issuance of securitized utility tariff bonds to finance the cost of retiring electric generation facilities before the end of their useful lives, including the repayment of existing debt. In connection with the planned accelerated retirement of the Rush Island Energy Center due to the NSR and Clean Air Act Litigation discussed above, Ameren Missouri expects to seek approval from the MoPSC to finance the costs associated with the retirement, including the remaining unrecovered net plant balance associated with the facility, through the issuance of securitized utility tariff bonds.
•In January 2021,February 2022, Ameren Missouri, acquired an up-to 300-MW windthrough a subsidiary, entered into a build-transfer agreement to acquire a 150-MW solar generation projectfacility after construction. The facility is expected to be located in northwestern Missourisoutheastern Illinois. The acquisition is subject to certain conditions, including the issuance of a certificate of convenience and partially placed it in service asnecessity by the Atchison Renewable Energy Center. As ofMoPSC, obtaining a MISO transmission interconnection agreement, and approval by the date of this filing, Ameren Missouri has placed approximately half of the project in service, representing a purchase price of approximately $250 million, including an immaterial amount of transaction costs.FERC. Ameren Missouri expects to file for a certificate of convenience and necessity with the remaining MWsMoPSC by mid-2022. Depending on the timing of regulatory approvals and the impact of potential sourcing issues discussed below, the project could be completed as early as 2024. Capital expenditures related to this facility are not included in Ameren’s and Ameren Missouri’s expected capital investments discussed below.
•Ameren Missouri's 2020 IRP targets cleaner and more diverse sources of energy generation, including solar generation. While rights to acquire the 150-MW solar facility discussed above were secured through a build-transfer agreement, supply chain disruptions, including solar panel shortages and increasing material costs as a result of government tariffs and other factors, could affect the costs as well as the timing of this project and other solar generation projects. The supply of solar panels to the United States has been significantly disrupted as a result of an investigation initiated by the Department of Commerce in late March 2022, which could result in punitive tariffs on solar panels imported from four Southeast Asian countries. The investigation is in response to complaints of Chinese solar manufacturers shifting solar cells to these countries to avoid tariffs required on imports from China. The Department of Commerce is
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required to issue a preliminary determination within 150 days of its initiation of an investigation, with final determination taking 300 days or more. Additionally, certain solar panels from China have been subject to detention by the United States Customs and Border Protection Agency as a result of the project to beUyghur Forced Labor Prevention Act that was passed in serviceDecember 2021. Any tariffs or other outcomes resulting from the investigation by the endDepartment of September 2021.Commerce or actions by the United States Customs and Border Protection Agency could affect the cost and the availability of solar panels and the timing and amount of Ameren Missouri's estimated capital expenditures associated with solar generation investments.
•Through 2025,2026, we expect to make significant capital expenditures to improve our electric and natural gas utility infrastructure, with a major portion directed to our transmission and distribution systems. We estimate that we will invest up to $17.8$18.0 billion (Ameren Missouri – up to $9.3$9.2 billion; Ameren Illinois – up to $8.2$8.6 billion; ATXI – up to $0.2 billion) of capital expenditures during the period from 20212022 through 2025. Ameren’s and Ameren Missouri’s estimates include 300 MWs of wind generation at the Atchison Renewable Energy Center, but exclude incremental renewable generation investment opportunities of 1,200 MWs by 2025, which are included in Ameren Missouri’s 2020 IRP. As of the date of this filing, no contractual agreements have been entered into, and no regulatory approvals have been requested, related to these opportunities.2026. These planned investments are based on the assumption of continued constructive regulatory frameworks, including an assumption that Ameren Missouri requests and receives MoPSC approval of an extension of the PISA throughfrom December 2023 to December 2028. Ameren’s and Ameren Missouri’s estimates exclude renewable generation investment opportunities of 1,200 MWs by 2026, which are included in Ameren Missouri’s 2020 IRP, and additional investment opportunities that may be approved by the MISO to address reliability concerns in connection with the planned accelerated retirement of the Rush Island Energy Center.
•In 2021, the MISO issued a report outlining a preliminary long-range transmission planning roadmap of projects through 2039, which considers the rapidly changing generation mix within MISO resulting from significant additions of renewable generation, actual and expected generation plant closures, and state mandates or goals for clean energy or carbon emissions reductions. In February 2022, the MISO updated a list of projects under consideration for the first phase of the roadmap, and is expected to approve certain projects for the first phase in late July 2022. Expenditures that result from the MISO long-range transmission planning roadmap may cause adjustments to our estimated 2022 through 2026 capital expenditures.
•Environmental regulations, including those related to CO2 emissions, or other actions taken by the EPA or state regulators, or requirements that may result from the NSR and Clean Air Act Litigation discussed in Note 9 – Commitments and Contingencies under Part I, Item 1, of this report, could result in significant increases in capital expenditures and operating costs. Regulations enacted by a prior federal administration can be reviewed and repealed, by the EPA, and replacement or alternative regulations can be proposed or adopted by the current federal administration including the EPA and state regulators.EPA. The ultimate implementation of any of these regulations, as well as the timing of any such implementation, is uncertain. However, the individual or combined effects of existing and new environmental regulations could result in significant capital expenditures, increased operating costs, or the closure or alteration of some of Ameren Missouri’s coal-firedcoal and natural gas-fired energy centers. Ameren Missouri’s capital expenditures are subject to MoPSC prudence reviews, which could result in cost disallowances as well as regulatory lag. The cost of Ameren Illinois’ purchased power and natural gas purchased for resale could increase. However, Ameren Illinois expects that these costs would be recovered from customers with no material adverse effect on its results of operations, financial position, or liquidity. Ameren’s and Ameren Missouri’s earnings could benefit from increased investment to comply with environmental regulations if those investments are reflected and recovered on a timely basis in customer rates.
•The Ameren Companies have multiyear credit agreements that cumulatively provide $2.3 billion of credit through December 2024,2025, subject to a 364-day repayment term for Ameren Missouri and Ameren Illinois, with the option to seek incremental commitments to increase the cumulative credit provided to $2.7 billion. See Note 3 – Short-term Debt and Liquidity under Part I, Item 1, of this report and Note 4 – Short-term Debt and Liquidity under Part II, Item 8, in the Form 10-K for additional information regarding the Credit Agreements. The Ameren Companies have no material maturitiesBy the end of 2022, $55 million, $400 million, and $50 million of long-term debt until 2022.obligations are due to mature at Ameren Missouri, and Ameren Illinois, expect to issue long-term debt in 2021 and to use the proceeds for general corporate purposes, including to repay short-term debt. With the recently completed Ameren (parent) debt issuance and availability under the Credit Agreements, as well as the proceeds from the recent settlement of the forward sale agreement,ATXI, respectively. Ameren, Ameren Missouri, and Ameren Illinois believe that their liquidity is adequate given their expected operating cash flows, capital expenditures, including expected wind generation additions remaining in 2021, and financing plans. The Ameren Companies continue to monitor the effect of the COVID-19 pandemic on their liquidity, including as a result of decreased sales and increased customer nonpayment. To date, the Ameren Companies have been able to access the capital markets on reasonable terms when needed. However, there can be no assurance that significant changes in economic conditions, disruptions in the capital and credit markets, or other unforeseen events will not materially affect their ability to execute their expected operating, capital, or financing plans.
•Ameren expects its cash used for currently planned capital expenditures and dividends to exceed cash provided by operating activities over the next several years. As part of its funding plan to fund the cash requirements for capital expenditures, Ameren is using newly issued shares of common stock, rather than market-purchased shares, to satisfy requirements under the DRPlus and employee benefit plans and expects to continue to do so through at least 2025.2026. Ameren expects these issuances to provide equity of about $100 million annually. In addition, to the issuance of common shares in connection with the 2021 settlement of the remaining portion of the forward sale agreement, Ameren plans to issue incremental equity of about $150 million in 2021, Ameren established an ATM program under which Ameren may offer and about $300sell from time to time up to $750 million each year from 2022of its common stock, which includes the ability to 2025. Ameren expects to establish an at-the-market equity program that will allow Ameren to meet equity needs through 2023,enter into forward sales agreements, subject to market conditions and other factors. For additional information regarding outstanding forward sale agreements, including settlement dates, see Note 4 – Long-Term Debt and Liquidity under Part I, Item 1, of this report. Ameren expects to settle the forward sale agreements by December 31, 2022. Ameren plans to issue approximately $300 million of equity each year from 2022 to 2026 in addition to issuances under the DRPlus and employee benefit plans. Ameren expects its equity to total capitalization ratio to be aboutapproximately 45% through December 31, 2025,2026, with the long-term intent to support solid investment-grade credit ratings. Ameren Missouri and Ameren Illinois expect to fund cash flow needs through debt issuances, adjustments of dividends to Ameren (parent), and/or capital contributions from Ameren (parent).
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•As of March 31, 2021,2022, Ameren had $95$136 million in tax benefits from federal and state income tax credit carryforwards $107and $35 million in tax benefits from federal and state net operating loss carryforwards, and $12 million in tax benefits from federal and state income tax overpayments and outstanding refunds, which will be utilized in future periods. Ameren expects federal income tax payments at the required minimum levels from 20212022 to 20252026 resulting from the anticipated use of existing production tax credits that will be generated by Ameren Missouri’s High Prairie Renewable and Atchison renewableRenewable energy centers, existing tax net operating losses, tax credit carryforwards, and tax overpayments, and outstanding refunds.
•As a result of the significant increase in customer demand and prices for natural gas and electricity experienced in mid-February 2021 due to extremely cold weather, for the month of February 2021, Ameren Missouri and Ameren Illinois had under-recovered commodity costs under their PGA clauses and, for Ameren Missouri, under the FAC (Ameren Missouri - PGA $53 million, FAC $50 million; Ameren Illinois - PGA $221 million). Ameren Missouri’s PGA and FAC under-recoveries are designed to be collected from customers over 12 months beginning November 2021 and eight months beginning October 2021, respectively. Longer recovery periods may be sought byIn October 2021, the MoPSC issued an order allowing Ameren Missouri or imposed byto extend the MoPSCcollection period for the cumulative PGA under-recovery as of August 2021, which includes the February 2021 under-recovery, from 12 months to 36 months beginning November 2021, to lessen the impact on customer rates. Ameren Illinois’Illinois is collecting the PGA under-recovery is being collected from customers over 1218 months beginning April 2021, but the collection period may be extended at Ameren Illinois’ election to lessen the impact on customer rates.2021.
The above items could have a material impact on our results of operations, financial position, and liquidity. Additionally, in the ordinary course of business, we evaluate strategies to enhance our results of operations, financial position, and liquidity. These strategies may include acquisitions, divestitures, opportunities to reduce costs or increase revenues, and other strategic initiatives to increase Ameren’s shareholder value. We are unable to predict which, if any, of these initiatives will be executed. The execution of these initiatives may have a material impact on our future results of operations, financial position, or liquidity.
REGULATORY MATTERS
See Note 2 – Rate and Regulatory Matters under Part I, Item 1, of this report.
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.
There have been no material changes to the quantitative and qualitative disclosures about interest rate risk, credit risk, investmentcommodity price risk, commodityinvestment price risk, and commodity supplier risk included in the Form 10-K.10-K, except for as discussed below. See Item 7A under Part II of the Form 10-K for a more detailed discussion of our market risk.
Ameren Missouri has an immaterial amount of enriched uranium that will be utilized later this decade sourced from a Russian supplier that could become subject to future sanctions. Ameren Missouri is reviewing options to reduce its exposure from Russian uranium suppliers. Ameren Missouri has inventories and supply contracts from non-Russian suppliers sufficient to meet all of its uranium (concentrate and hexafluoride), conversion, and enrichment requirements at least through the 2026 refueling of the Callaway Energy Center.
ITEM 4. CONTROLS AND PROCEDURES.
(a)Evaluation of Disclosure Controls and Procedures
As of March 31, 2021,2022, evaluations were performed under the supervision and with the participation of management, including the principal executive officer and the principal financial officer of each of the Ameren Companies, of the effectiveness of the design and operation of such registrant’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act). Based on those evaluations, as of March 31, 2021,2022, the principal executive officer and the principal financial officer of each of the Ameren Companies concluded that such disclosure controls and procedures are effective to provide assurance that information required to be disclosed in such registrant’s reports filed or submitted under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms and such information is accumulated and communicated to its management, including its principal executive officer and its principal financial officer, to allow timely decisions regarding required disclosure.
(b)Changes in Internal Controls over Financial Reporting
There has been no change in any of the Ameren Companies’ internal control over financial reporting during their most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, each of their internal control over financial reporting.
PART II. OTHER INFORMATION
ITEM 1. LEGAL PROCEEDINGS.
We are involved in legal and administrative proceedings before various courts and agencies with respect to matters that arise in the ordinary course of business, some of which involve substantial amounts of money. We believe that the final disposition of these proceedings, except as otherwise disclosed in this report, will not have a material adverse effect on our results of operations, financial position, or liquidity.
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Risk of loss is mitigated, in some cases, by insurance or contractual or statutory indemnification. We believe that we have established appropriate reserves for potential losses. For additional information on material legal and administrative proceedings, see Note 2 – Rate and Regulatory Matters, Note 9 – Commitments and Contingencies, and Note 10 – Callaway Energy Center, under Part I, Item 1, of this report. Pursuant to Item 103(c)(3)(iii) of Regulation S-K, our policy is to disclose environmental proceedings to which a governmental entity is a party if we reasonably believe such proceedings will result in monetary sanctions of $1 million or more.
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ITEM 1A. RISK FACTORS.
There have been no material changes to the risk factors disclosed in Part I, Item 1A, Risk Factors in the Form 10-K.
ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS.
Ameren Corporation, Ameren Missouri, and Ameren Illinois did not purchase equity securities reportable under Item 703 of Regulation S-K during the period from January 1, 2021,2022, to March 31, 2021.2022.
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ITEM 6. EXHIBITS.
The documents listed below are being filed or have previously been filed on behalf of the Ameren Companies and are incorporated herein by reference from the documents indicated and made a part hereof. Exhibits not identified as previously filed are filed herewith.
Exhibit
Designation		Registrant(s)Nature of ExhibitPreviously Filed as Exhibit to:
Instruments Defining Rights of Security Holders, Including Indentures
4.1Ameren
Ameren Missouri		March 5, 2021April 1, 2022 Form 8-K, Exhibits 4.3 and 4.4, Exhibit 4.2,
File No. 1-147561-2967
Rule 13a-14(a) / 15d-14(a) Certifications
31.1Ameren
31.2Ameren
31.3Ameren Missouri
31.4Ameren Missouri
31.5Ameren Illinois
31.6Ameren Illinois
Section 1350 Certifications
32.1Ameren
32.2Ameren Missouri
32.3Ameren Illinois
Interactive Data Files
101.INSAmeren CompaniesInline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document
101.SCHAmeren CompaniesInline XBRL Taxonomy Extension Schema Document
101.CALAmeren CompaniesInline XBRL Taxonomy Extension Calculation Linkbase Document
101.LABAmeren CompaniesInline XBRL Taxonomy Extension Label Linkbase Document
101.PREAmeren CompaniesInline XBRL Taxonomy Extension Presentation Linkbase Document
101.DEFAmeren CompaniesInline XBRL Taxonomy Extension Definition Document
104Ameren CompaniesCover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)
The file number references for the Ameren Companies’ filings with the SEC are: Ameren, 1-14756; Ameren Missouri, 1-2967; and Ameren Illinois, 1-3672.
Each registrant hereby undertakes to furnish to the SEC upon request a copy of any long-term debt instrument not listed above that such registrant has not filed as an exhibit pursuant to the exemption provided by Item 601(b)(4)(iii)(A) of Regulation S-K.
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SIGNATURES
Pursuant to the requirements of the Exchange Act, each registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. The signature for each undersigned company shall be deemed to relate only to matters having reference to such company or its subsidiaries.
AMEREN CORPORATION
(Registrant)
/s/ Michael L. Moehn
Michael L. Moehn
Executive Vice President and Chief Financial Officer
(Principal Financial Officer)
UNION ELECTRIC COMPANY
(Registrant)
/s/ Michael L. Moehn
Michael L. Moehn
Executive Vice President and Chief Financial Officer
(Principal Financial Officer)
AMEREN ILLINOIS COMPANY
(Registrant)
/s/ Michael L. Moehn
Michael L. Moehn
Executive Vice President and Chief Financial Officer
(Principal Financial Officer)
Date: May 10, 20216, 2022
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