Long-Term Debt | LONG-TERM DEBT Amounts in the table below represent the categories of long-term debt obligations incurred by the Company. December 31, 2019 2018 Vistra Operations Credit Facilities $ 2,700 $ 5,813 Vistra Operations Senior Secured Notes: 3.550% Senior Secured Notes, due July 15, 2024 1,500 — 3.700% Senior Secured Notes, due January 30, 2027 800 — 4.300% Senior Secured Notes, due July 15, 2029 800 — Total Vistra Operations Senior Secured Notes 3,100 — Vistra Operations Senior Unsecured Notes: 5.500% Senior Unsecured Notes, due September 1, 2026 1,000 1,000 5.625% Senior Unsecured Notes, due February 15, 2027 1,300 — 5.000% Senior Unsecured Notes, due July 31, 2027 1,300 — Total Vistra Operations Senior Unsecured Notes 3,600 1,000 Vistra Energy Senior Unsecured Notes: 7.375% Senior Unsecured Notes, due November 1, 2022 — 1,707 5.875% Senior Unsecured Notes, due June 1, 2023 500 500 7.625% Senior Unsecured Notes, due November 1, 2024 — 1,147 8.034% Senior Unsecured Notes, due February 2, 2024 — 25 8.000% Senior Unsecured Notes, due January 15, 2025 (a) 81 81 8.125% Senior Unsecured Notes, due January 30, 2026 166 166 Total Vistra Energy Senior Unsecured Notes 747 3,626 Other: 7.000% Amortizing Notes, due July 1, 2019 — 24 Forward Capacity Agreements 161 236 Equipment Financing Agreements 99 120 Mandatorily redeemable subsidiary preferred stock (b) — 70 8.82% Building Financing due semiannually through February 11, 2022 (c) 15 21 Other 12 — Total other long-term debt 287 471 Unamortized debt premiums, discounts and issuance costs (d) (55) 155 Total long-term debt including amounts due currently 10,379 11,065 Less amounts due currently (277) (191) Total long-term debt less amounts due currently $ 10,102 $ 10,874 ____________ (a) On January 15, 2020, Vistra Energy redeemed all outstanding 8.000% Senior Notes due 2025 at a redemption price equal to 104.0% of the aggregate principal amount thereof, plus accrued and unpaid interest to, but excluding the date of redemption. (b) Shares of mandatorily redeemable preferred stock in PrefCo. This subsidiary preferred stock is accounted for as a debt instrument under relevant accounting guidance. On October 3, 2019, PrefCo redeemed all of the issued and outstanding preferred stock at a price per share equal to the preferred liquidation amount, plus accrued and unpaid dividends to and including the date of redemption. (c) Obligation related to a corporate office space finance lease. This obligation will be funded by amounts held in an escrow account that is reflected in other noncurrent assets in our consolidated balance sheets. (d) Includes impact of recording debt assumed in the Merger at fair value. Vistra Operations Credit Facilities At December 31, 2019, the Vistra Operations Credit Facilities consisted of up to $5.425 billion in senior secured, first-lien revolving credit commitments and outstanding term loans, which consisted of revolving credit commitments of up to $2.725 billion, including a $2.35 billion letter of credit sub-facility (Revolving Credit Facility) and term loans of $2.7 billion (Term Loan B-3 Facility). These amounts reflect the following transactions and amendments completed in 2018 and 2019: • In November 2019, Vistra Operations used the net proceeds from the November 2019 Senior Secured Notes Offering described below and $799 million of incremental borrowings under the Term Loan B-3 Facility to repay the entire amount outstanding of $1.897 billion of term loans under the B-1 Facility (Term Loan B-1 Facility). Fees and expenses related to the transactions totaled $2 million in the year ended December 31, 2019, which were recorded as interest expense and other charges on the consolidated statements of operations. • In October 2019, Vistra Operations borrowed $550 million under the Revolving Credit Facility. The proceeds of the borrowings were used for general corporate purposes, including the funding of a $425 million dividend to Vistra Energy to pay the principal, premium and interest due in connection with the redemption by Vistra Energy of the entire $387 million aggregate principal amount outstanding of 7.625% senior notes described below. In November 2019, Vistra Operations repaid $200 million under the Revolving Credit Facility. • In June 2019, Vistra Operations used the net proceeds from the June 2019 Senior Secured Notes Offering described below to repay $889 million of loans under the Term Loan B-1 Facility, the entire amount outstanding of $977 million of term loans under the B-2 Facility (Term Loan B-2 Facility, and together with the Term Loan B-1 Facility and the Term Loan B-3 Facility, the Term Loan B Facility) and $134 million under the Term Loan B-3 Facility. We recorded an extinguishment loss of $4 million on the transactions in the year ended December 31, 2019. • In March 2019 and May 2019, the Vistra Operations Credit Facilities were amended whereby we obtained $225 million of incremental Revolving Credit Facility commitments. The letter of credit sub-facility was also increased by $50 million. Fees and expenses related to the amendments to the Vistra Operations Credit Facilities totaled $2 million in the year ended December 31, 2019, which were capitalized as a noncurrent asset. • In June 2018, the Vistra Operations Credit Facilities were amended whereby we incurred $2.050 billion of borrowings under the new Term Loan B-3 Facility and obtained $1.640 billion of incremental Revolving Credit Facility commitments. The letter of credit sub-facility was also increased by $1.585 billion. The maturity date of the Revolving Credit Facility was extended from August 4, 2021 to June 14, 2023. As discussed below, the proceeds from the Term Loan B-3 Facility were used to repay borrowings under the credit agreement that Vistra Energy assumed from Dynegy in connection with the Merger. Additionally, letter of credit term loans totaling $500 million (Term Loan C Facility) were repaid using $500 million of cash from collateral accounts used to backstop letters of credit. Fees and expenses related to the amendment to the Vistra Operations Credit Facilities totaled $42 million in the year ended December 31, 2018, of which $23 million was recorded as interest expense and other charges on the consolidated statements of operations, $9 million was capitalized as a reduction in the carrying amount of the debt and $10 million was capitalized as a noncurrent asset. The Vistra Operations Credit Facilities and related available capacity at December 31, 2019 are presented below. December 31, 2019 Vistra Operations Credit Facilities Maturity Date Facility Cash Available Revolving Credit Facility (a) June 14, 2023 $ 2,725 $ 350 $ 1,426 Term Loan B-3 Facility (b) December 31, 2025 2,700 2,700 — Total Vistra Operations Credit Facilities $ 5,425 $ 3,050 $ 1,426 ___________ (a) Facility to be used for general corporate purposes. Facility includes a $2.35 billion letter of credit sub-facility, of which $949 million of letters of credit were outstanding at December 31, 2019 and which reduce our available capacity. Cash borrowings under the Revolving Credit Facility are reported in short-term borrowings in our consolidated balance sheets. (b) Beginning in 2020, cash borrowings under the Term Loan B-3 Facility are subject to a required scheduled quarterly payment in annual amount equal to 1.00% of the original principal amount with the balance paid at maturity. Amounts paid cannot be reborrowed. In February 2018, June 2018 and November 2019, certain pricing terms for the Vistra Operations Credit Facilities were amended. We accounted for these transactions as modifications of debt. At December 31, 2019, cash borrowings under the Revolving Credit Facility would bear interest based on applicable LIBOR rates, plus a fixed spread of 1.75%, and there were $350 million outstanding borrowings. Letters of credit issued under the Revolving Credit Facility bear interest of 1.75%. Amounts borrowed under the Term Loan B-3 Facilities bear interest based on applicable LIBOR rates plus fixed spreads of 1.75%. At December 31, 2019, the weighted average interest rates before taking into consideration interest rate swaps on outstanding borrowings was 3.54% under the Term Loan B-3 Facilities. The Vistra Operations Credit Facilities also provide for certain additional fees payable to the agents and lenders, including fronting fees with respect to outstanding letters of credit and availability fees payable with respect to any unused portion of the available Revolving Credit Facility. Obligations under the Vistra Operations Credit Facilities are secured by a lien covering substantially all of Vistra Operations' (and its subsidiaries') consolidated assets, rights and properties, subject to certain exceptions set forth in the Vistra Operations Credit Facilities, provided that the amount of loans outstanding under the Vistra Operations Credit Facilities that may be secured by a lien covering certain principal properties of the Company is expressly limited by the terms of the Vistra Operations Credit Facilities. The Vistra Operations Credit Facilities also permit certain hedging agreements to be secured on a pari-passu basis with the Vistra Operations Credit Facilities in the event those hedging agreements met certain criteria set forth in the Vistra Operations Credit Facilities. The Vistra Operations Credit Facilities provide for affirmative and negative covenants applicable to Vistra Operations (and its restricted subsidiaries), including affirmative covenants requiring it to provide financial and other information to the agents under the Vistra Operations Credit Facilities and to not change its lines of business, and negative covenants restricting Vistra Operations' (and its restricted subsidiaries') ability to incur additional indebtedness, make investments, dispose of assets, pay dividends, grant liens or take certain other actions, in each case, except as permitted in the Vistra Operations Credit Facilities. Vistra Operations' ability to borrow under the Vistra Operations Credit Facilities is subject to the satisfaction of certain customary conditions precedent set forth therein. The Vistra Operations Credit Facilities provide for certain customary events of default, including events of default resulting from non-payment of principal, interest or fees when due, material breaches of representations and warranties, material breaches of covenants in the Vistra Operations Credit Facilities or ancillary loan documents, cross-defaults under other agreements or instruments and the entry of material judgments against Vistra Operations. Solely with respect to the Revolving Credit Facility, and solely during a compliance period (which, in general, is applicable when the aggregate revolving borrowings and issued revolving letters of credit (in excess of $300 million) exceed 30% of the revolving commitments), the agreement includes a covenant that requires the consolidated first lien net leverage ratio, which is based on the ratio of net first lien debt compared to an EBITDA calculation defined under the terms of the facilities, not to exceed 4.25 to 1.00. As of December 31, 2019, we were in compliance with this financial covenant. Upon the existence of an event of default, the Vistra Operations Credit Facilities provide that all principal, interest and other amounts due thereunder will become immediately due and payable, either automatically or at the election of specified lenders. Interest Rate Swaps — Vistra Energy employs interest rate swaps to hedge our exposure to variable rate debt. As of December 31, 2019, Vistra Energy has entered into the following series of interest rate swap transactions. Notional Amount Expiration Date Rate Range Swapped to fixed $3,000 July 2023 3.67 % - 3.91% Swapped to variable $700 July 2023 3.20 % - 3.23% Swapped to fixed (a) $720 February 2024 3.71 % - 3.72% Swapped to variable $720 February 2024 3.20 % - 3.20% Swapped to fixed (b) $3,000 July 2026 4.72 % - 4.79% Swapped to variable (b) $700 July 2026 3.28 % - 3.33% ____________ (a) In June 2018, we completed the novation of $1.959 billion of Vistra Energy (legacy Dynegy) interest rate swaps to Vistra Operations, of which $398 million expired and $841 million were terminated in June 2019. (b) These swaps are effective from July 2023 through July 2026. During the three months ended December 31, 2019, Vistra Energy entered into $2.120 billion of new interest rate swaps, pursuant to which Vistra Energy will pay a variable rate and receive a fixed rate. The terms of these new swaps were matched against the terms of certain existing swaps, effectively offsetting the hedge of the existing swaps and fixing the out-of-the-money position of such swaps. These matched swaps will settle over time, in accordance with the original contractual terms. The remaining existing swaps continue to hedge our exposure on $2.3 billion of debt from now through July 2026. Alternative Letter of Credit Facility Two alternate letter of credit facilities (each, an Alternative LOC Facility, and collectively, the Alternate LOC Facilities) with an aggregate facility limit of $500 million became effective in the year ended December 31, 2019. At December 31, 2019, $500 million of letters of credit were outstanding under the Alternate LOC Facilities. Of the total facility limit, $250 million matures in December 2020 and $250 million matures in December 2021. Vistra Operations Senior Secured Notes In 2019, Vistra Operations issued and sold $3.1 billion aggregate principal amount of senior secured notes (Senior Secured Notes) in offerings to eligible purchasers under Rule 144A and Regulation S under the Securities Act (Senior Secured Notes Offerings) consisting of the following: Senior Secured Notes Maturity Year Interest Terms June 2019 November 2019 Senior Secured Notes Offering (b) 3.550% Senior Secured Notes 2024 January 15 and July 15 $ 1,200 $ 300 3.700% Senior Secured Notes 2027 January 30 and July 30 — 800 4.300% Senior Secured Notes 2029 January 15 and July 15 800 — Total senior secured notes $ 2,000 $ 1,100 Net proceeds $ 1,976 $ 1,099 Debt issuance and other fees (c) $ 20 $ 10 ___________ (a) The June 2019 Senior Secured Notes were sold pursuant to a purchase agreement by and among Vistra Operations, certain direct and indirect subsidiaries of Vistra Operations and Citigroup Global Markets Inc., as representative of the several initial purchasers. Net proceeds, together with cash on hand, were used to prepay certain amounts outstanding and accrued interest (together with fees and expenses) under the Vistra Operations Credit Facility's Term Loan B Facility. (b) The November 2019 Senior Secured Notes were sold pursuant to a purchase agreement by and among Vistra Operations, certain direct and indirect subsidiaries of Vistra Operations and J.P. Morgan Securities LLC., as representative of the several initial purchasers. Net proceeds, together with borrowings under the Term Loan B-3 Facility and cash on hand, were used to repay the entire amount outstanding and accrued interest (together with fees and expenses) under the Term Loan B-1 Facility. (c) Capitalized as a reduction in the carrying amount of the debt. The Senior Secured Notes are and will be fully and unconditionally guaranteed by certain of Vistra Operations' current and future subsidiaries that also guarantee the Vistra Operations Credit Facilities. The Senior Secured Notes are secured by a first-priority security interest in the same collateral that is pledged for the benefit of the lenders under the Vistra Operations Credit Facilities, which consists of a substantial portion of the property, assets and rights owned by Vistra Operations and certain direct and indirect subsidiaries of Vistra Operations as subsidiary guarantors (collectively, the Guarantor Subsidiaries) as well as the stock of Vistra Operations held by Vistra Intermediate. The collateral securing the Senior Secured Notes will be released if Vistra Operations' senior, unsecured long-term debt securities obtain an investment grade rating from two out of the three rating agencies, subject to reversion if such rating agencies withdraw the investment grade rating of Vistra Operations' senior, unsecured long-term debt securities or downgrade such rating below investment grade. Vistra Operations Senior Unsecured Notes In 2018 and 2019, Vistra Operations issued and sold $3.6 billion aggregate principal amount of senior unsecured notes (Vistra Operations Senior Unsecured Notes) in offerings to eligible purchasers under Rule 144A and Regulation S under the Securities Act (Senior Unsecured Notes Offerings) consisting of the following: Senior Unsecured Notes Maturity Year Interest Terms August 2018 Senior Unsecured Notes Offering (a) February 2019 Senior Unsecured Notes Offering (b) June 2019 5.500% Senior Unsecured Notes 2026 March 1 and September 1 $ 1,000 $ — $ — 5.625% Senior Unsecured Notes 2027 February 15 and August 15 — 1,300 — 5.000% Senior Unsecured Notes 2027 January 31 and July 31 — — 1,300 Total $ 1,000 $ 1,300 $ 1,300 Net Proceeds $ 990 $ 1,287 $ 1,287 Debt issuance and other fees (d) $ 12 $ 16 $ 13 ___________ (a) The August 2018 Senior Unsecured Notes were sold pursuant to a purchase agreement by and among Vistra Operations, the Guarantor Subsidiaries and Citigroup Global Markets Inc., as representative of the several initial purchasers. Net proceeds, together with cash on hand and cash received from the funding of the Receivables Facility (see Note 10), were used to pay the purchase price and accrued interest (together with fees and expenses) required in connection with the 2018 Tender Offers. (b) The February 2019 Senior Unsecured Notes were sold pursuant to a purchase agreement by and among Vistra Operations, the Guarantor Subsidiaries and J.P. Morgan Securities LLC., as representative of the several initial purchasers. Net proceeds, together with cash on hand, were used to pay the purchase price and accrued interest (together with fees and expenses) required in connection with (i) the February 2019 Tender Offer, (ii) the redemption of approximately $35 million aggregate principal amount of our 7.375% senior unsecured notes due 2022 (7.375% senior notes) and approximately $25 million aggregate principal amount of our outstanding 8.034% senior unsecured notes due 2024 (8.034% senior notes). (c) The June 2019 Senior Unsecured Notes were sold pursuant to a purchase agreement by and among Vistra Operations, the Guarantor Subsidiaries and Goldman Sachs & Co. LLC, as representative of the several initial purchasers. Net proceeds, together with cash on hand, were used to pay the purchase price and accrued interest (together with fees and expenses) required in connection with (i) the June 2019 Tender Offer and (ii) the redemption of approximately $306 million of our outstanding 7.375% senior notes and approximately $87 million of our 7.625% senior unsecured notes due 2024 (7.625% senior notes) in July 2019. We recorded an extinguishment gain of $2 million on the redemptions in the year ended December 31, 2019. (d) Capitalized as a reduction in the carrying amount of the debt. The indentures governing the Vistra Operations Senior Unsecured Notes (collectively, as each may be amended or supplemented from time to time, the Vistra Operations Senior Unsecured Indentures) provide for the full and unconditional guarantee by the Guarantor Subsidiaries of the punctual payment of the principal and interest on such notes. The Vistra Operations Senior Unsecured Indentures contain certain covenants and restrictions, including, among others, restrictions on the ability of the Issuer and its subsidiaries, as applicable, to create certain liens, merge or consolidate with another entity, and sell all or substantially all of their assets. Vistra Energy Senior Unsecured Notes Bond Repurchase Program — In November 2018, our board of directors (the Board) authorized a bond repurchase program under which up to $200 million principal amount of outstanding Vistra Energy Senior Unsecured Notes could be repurchased. Through December 31, 2019, $119 million principal amount of Vistra Energy Senior Unsecured Notes had been repurchased. In July 2019, the Board authorized up to $1.0 billion to repay or repurchase any outstanding debt of the Company (or its subsidiaries), with its authority superseding the previously authorized bond repurchase program. January 2020 Redemption — In January 2020, Vistra Energy redeemed the entire $81 million aggregate principal amount outstanding of 8.000% senior unsecured notes due 2025 (8.000% senior notes) at a redemption price equal to 104.0% of the aggregate principal amount thereof, plus accrued and unpaid interest to, but excluding, the date of redemption. November 2019 Redemption — In November 2019, Vistra Energy redeemed the entire $387 million aggregate principal amount outstanding of 7.625% senior notes at a redemption price equal to 103.8% of the aggregate principal amount thereof, plus accrued and unpaid interest to, but excluding, the date of redemption. We recorded an extinguishment gain of $9 million on the transaction in the year ended December 31, 2019. June 2019 Tender Offer — In June 2019, Vistra Energy used the net proceeds from the June 2019 Notes Offering to fund a cash tender offer (the June 2019 Tender Offer) to purchase for cash $845 million aggregate principal amount of certain notes assumed in the Merger, including $173 million of 7.375% senior notes and $672 million of 7.625% senior notes. We recorded an extinguishment gain of $7 million on the transactions in the year ended December 31, 2019. In July 2019, Vistra Energy accepted and settled an additional approximately $1 million aggregate principal amount of outstanding 7.625% senior notes that were tendered after the early tender date of the June 2019 Tender Offer. February 2019 Tender Offer and Consent Solicitation — In February 2019, Vistra Energy used the net proceeds from the February 2019 Senior Unsecured Notes Offering to fund a cash tender offer (the February 2019 Tender Offer) to purchase for cash $1.193 billion aggregate principal amount of 7.375% senior notes assumed in the Merger. In connection with the February 2019 Tender Offer, Vistra Energy also commenced solicitation of consents from holders of the 7.375% senior notes. Vistra Energy received the requisite consents from the holders of the 7.375% senior notes and amended the indenture governing these senior notes to, among other things, eliminate substantially all of the restrictive covenants and certain events of default. August 2018 Tender Offers and Consent Solicitations — In August 2018, Vistra Energy used the net proceeds from the August 2018 Senior Unsecured Notes Offering, proceeds from the Receivables Facility (see Note 10) and cash on hand to fund cash tender offers (the 2018 Tender Offers) to purchase for cash $1.542 billion aggregate principal amount of Vistra Energy Senior Unsecured Notes assumed in the Merger. We recorded an extinguishment loss of $27 million on the transactions in the year ended December 31, 2018. Notes purchased consisted of the following: • $26 million of 7.625% senior notes; • $163 million of 8.034% senior notes; • $669 million of 8.000% senior notes, and • $684 million of 8.125% senior unsecured notes due 2026 (8.125% senior notes). In connection with the 2018 Tender Offers, Vistra Energy also commenced solicitations of consents from holders of the 7.375% senior notes, the 7.625% senior notes, the 8.034% senior notes, the 8.000% senior notes and the 8.125% senior notes to amend certain provisions of the applicable indentures governing each series of senior notes and the registration rights agreement with respect to the 8.125% senior notes. Vistra Energy received the requisite consents from the holders of the 8.034% senior notes, the 8.000% senior notes and the 8.125% senior notes (collectively, the Consent Senior Notes) and amended (a) the indentures governing each series of the applicable senior notes to, among other things, eliminate substantially all of the restrictive covenants and certain events of default and (b) the registration rights agreement with respect to the 8.125% senior notes to remove, among other things, the requirement that Vistra Energy commence an exchange offer to issue registered securities in exchange for the existing, nonregistered notes. Assumption of Senior Notes in Merger — On the Merger Date, Vistra Energy assumed $6.138 billion principal amount of Dynegy's senior unsecured notes. In May 2018, $850 million of outstanding 6.75% senior unsecured notes due 2019 were redeemed at a redemption price of 101.7% of the aggregate principal amount, plus accrued and unpaid interest up to but not including the date of redemption. Fees and expenses related to the redemption totaled $14 million in the year ended December 31, 2018 and were recorded as interest expense and other charges on the consolidated statements of operations. In June 2018, each of the Company's subsidiaries that guaranteed the Vistra Operations Credit Facilities (and did not already guarantee the senior notes) provided a guarantee on the senior notes that remained outstanding. The senior notes that remain outstanding after the closing of the June 2019 Tender Offer, the February 2019 Tender Offer and the 2018 Tender Offers are unsecured and unsubordinated obligations of Vistra Energy and are guaranteed by substantially all of its current and future wholly owned domestic subsidiaries that from time to time are a borrower or guarantor under the agreement governing the Vistra Operations Credit Facilities (Credit Facilities Agreement) (see Note 22). Except with respect to the Consent Senior Notes, the respective indentures of the senior notes of Vistra Energy (collectively, as each may be amended or supplemented from time to time, the Vistra Energy Senior Unsecured Indentures) limit, among other things, the ability of the Company or any of the guarantors to create liens upon any principal property to secure debt for borrowed money in excess of, among other limitations, 30% of total assets. The Vistra Energy Senior Unsecured Indentures also contain customary events of default which would permit the holders of the applicable series of senior notes to declare such notes to be immediately due and payable if not cured within applicable grace periods, including the failure to make timely principal or interest payments on such notes or (except with respect to the Consent Senior Notes) other indebtedness aggregating $100 million or more, and, except with respect to the Consent Senior Notes, the failure to satisfy covenants, and specified events of bankruptcy and insolvency. Other Long-Term Debt Amortizing Notes — On the Merger Date, Vistra Energy assumed the obligations of Dynegy's senior unsecured amortizing note (Amortizing Notes) that matured on July 1, 2019. The Amortizing Notes were issued in connection with the issuance of the tangible equity units (TEUs) by Dynegy (see Note 14). Each installment payment per Amortizing Note was paid in cash and constituted a partial repayment of principal and a payment of interest, computed at an annual rate of 7.00%. Interest was calculated on the basis of a 360-day year consisting of twelve 30-day months. Payments were applied first to the interest due and payable and then to the reduction of the unpaid principal amount, allocated as set forth in the indenture (Amortizing Notes Indenture). On the maturity date, the Company paid all amounts due under the Amortizing Notes Indenture and the Amortizing Notes Indenture ceased to be of further force and effect. Forward Capacity Agreements — On the Merger Date, the Company assumed the obligation of Dynegy's agreements under which a portion of the PJM capacity that cleared for Planning Years 2018-2019, 2019-2020 and 2020-2021 was sold to a financial institution (Forward Capacity Agreements). The buyer in this transaction will receive capacity payments from PJM during the Planning Years 2019-2020 and 2020-2021 in the amounts of $51 million and $110 million, respectively. We will continue to be subject to the performance obligations as well as any associated performance penalties and bonus payments for those planning years. As a result, this transaction is accounted for as long-term debt of $161 million with an implied interest rate of 3.01%. Equipment Financing Agreements — On the Merger Date, the Company assumed Dynegy's Equipment Financing Agreements. Under certain of our contractual service agreements in which we receive maintenance and capital improvements for our gas-fueled generation fleet, we have obtained parts and equipment intended to increase the output, efficiency and availability of our generation units. We have financed these parts and equipment under agreements with maturities ranging from 2019 to 2026. The portion of future payments attributable to principal will be classified as cash outflows from financing activities, and the portion of future payments attributable to interest will be classified as cash outflows from operating activities in our statements of consolidated cash flows. Mandatorily Redeemable Subsidiary Preferred Stock — In October 2019, PrefCo voluntarily redeemed the entire $70 million aggregate principal amount outstanding of its authorized preferred stock at a price per share equal to the preferred liquidation amount, plus accrued and unpaid dividends to and including the date of redemption. Debt Assumed in Crius Transaction — On the Crius Acquisition Date, Vistra Energy assumed $140 million in long-term debt obligations in connection with the Crius Transaction consisting of the following: • $44 million of 9.5% promissory notes due July 2025 (2025 promissory notes); • $8 million of 2% Connecticut Department of Economic and Community Development (CT DECD) term loans due February 2027, and • $88 million of borrowings and $9 million of issued letters of credit under the legacy Crius credit facility. In July 2019, borrowings of $88 million under the legacy Crius credit facility were repaid using cash on hand. In November 2019, (i) borrowings of approximately $38 million under the 2025 promissory notes were repaid using cash on hand and (ii) borrowings of approximately $2 million were offset by legacy indemnification obligations of the holders of the 2025 promissory notes. In November 2019, borrowings of $8 million under the CT DECD term loans were repaid using cash on hand. Debt Assumed in Ambit Transaction — All of the indebtedness outstanding at Ambit immediately prior to the closing of the Ambit Transaction was repaid at closing out of the purchase price. At December 31, 2019, approximately $8 million of letters of credit were outstanding under legacy Ambit agreements, all of which are collateralized with cash and recorded as restricted cash in the consolidated balance sheets. Vistra Energy (legacy Dynegy) Credit Agreement — On the Merger Date, Vistra Energy assumed the obligations under Dynegy's $3.563 billion credit agreement consisting of a $2.018 billion senior secured term loan facility due 2024 and a $1.545 billion senior secured revolving credit facility. As of the Merger Date, there were no cash borrowings and $656 million of letters of credit outstanding under the senior secured revolving credit facility. On April 23, 2018, $70 million of the senior secured revolving credit facility matured. In June 2018, the $2.018 billion senior secured term loan facility due 2024 was repaid using proceeds from the Term Loan B-3 Facility. In addition, all letters of credit outstanding under the senior secured revolving credit facility were replaced with letters of credit under the amended Vistra Operations Credit Facilities discussed above, and the revolving credit facility assumed from Dynegy in connection with the Merger was paid off in full and terminated. Maturities Long-term debt maturities at December 31, 2019 are as follows: December 31, 2019 2020 $ 273 2021 94 2022 42 2023 538 2024 1,538 Thereafter 7,949 Unamortized premiums, discounts and debt issuance costs (55) Total long-term debt, including amounts due currently $ 10,379 |