 Soleil Securities Diversified Utility and Energy Conference Chaka Patterson, VP and Treasurer April 1, 2010 Exhibit 99.1 |
 2 Forward-Looking Statements This presentation includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, that are subject to risks and uncertainties. The factors that could cause actual results to differ materially from these forward-looking statements include those discussed herein as well as those discussed in (1) Exelon’s 2009 Annual Report on Form 10-K in (a) ITEM 1A. Risk Factors, (b) ITEM 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations and (c) ITEM 8. Financial Statements and Supplementary Data: Note 18; and (2) other factors discussed in filings with the Securities and Exchange Commission (SEC) by Exelon Corporation, Commonwealth Edison Company, PECO Energy Company and Exelon Generation Company, LLC (Companies). Readers are cautioned not to place undue reliance on these forward-looking statements, which apply only as of the date of this presentation. None of the Companies undertakes any obligation to publicly release any revision to its forward- looking statements to reflect events or circumstances after the date of this presentation. |
 3 Key Messages Continued strong operations across geographically diverse nuclear fleet ComEd regulatory recovery plan producing improvement in earned returns Successfully refinanced ComEd ~$1 billion credit facility with strong bank representation and fair pricing Filing of PECO electric and gas rate cases on March 31 paves way for continued strong financial performance Preview of key 2010 events for remainder of the year Solid platform to pursue value-enhancing growth opportunities Continuing to manage the elements of our business we can control, while being strategic, thoughtful and disciplined about the elements we cannot control |
 4 0 10 20 30 40 50 60 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 Industry (w/o Exelon) Exelon Note: Exelon data includes Salem. 2009 average includes 23 days of TMI outage that extended into 2010 reflecting steam generator replacement. Exelon Generation Consistently Delivers Top-Tier Results Nuclear Reliability 30 Longest Continuous U.S. Runs Exelon Generation has ability to replicate best practices on a large scale Source: Platts News Flashes and Company Press Releases, 11/3/09 Refueling Outage Duration • 93.6% capacity factor – the 7 consecutive year exceeding 93% • Clinton and Quad Cities 1 units established new continuous run records of 596 and 594 days, respectively • TMI 1 unit set a new PWR world record for a 705-day continuous run • Equipment upgrades and power uprates added 70 MW of nuclear capacity 2009 Nuclear Fleet Achievements 0 200 400 600 800 Byron 1 Limerick 2 Byron 2 Braidwood 2 Quad Cities 1 Clinton Three Mile Island 1 Three Mile Island 1 Three Mile Island 1 LaSalle 1 Three Mile Island 1 Three Mile Island 1 Peach Bottom-3 Peach Bottom-3 LaSalle 2 LaSalle 1 (Days) th |
 5 Exelon Generation PJM Capacity Offers Regional Diversity 2013/2014 Capacity by Region (1) Exelon Generation expects modest upside in upcoming RPM auction (1) All generation values are approximate and not inclusive of wholesale transactions. Notes: All capacity values are in installed capacity terms (summer ratings) located in the areas. Eddystone 2 to retire 12/31/13. MAAC = Mid-Atlantic Area Council; EMAAC = Eastern MAAC; the MAAC area encompasses EMAAC. 10,300 MW 9,000 MW 1,500 MW RTO EMAAC MAAC 7% 50% 43% PJM 2013/14 RPM Auction Results Expected in May 0 25 50 75 100 125 150 175 200 2007-08 2008-09 2009-10 2010-11 2011-12 2012-13 2013-14 RTO EMAAC |
 6 6.1 6.9 2.0 2.0 7.3 6.4 2.0 2.2 Transmission Distribution ComEd Building Strength Producing Results with Regulatory Recovery Plan ~46% ~47% 8.5% 46.4% Earned ROE Equity (1) 5.5% 45.4% $8.1 $8.4 $9.4 2008 2009 2011 (Illustrative) (2) Average Annual Rate Base ($ in billions) (1) Equity based on definition provided in most recent Illinois Commerce Commission (ICC) distribution rate case order (book equity less goodwill). (2) Provided solely to illustrate possible future outcomes that are based on a number of different assumptions, including an ROE target, all of which are subject to uncertainties and should not be relied upon as a forecast of future results. Note: Amounts may not add due to rounding. 2010E $8.9 ComEd executing on regulatory recovery plan resulting in healthy increases in earned ROE >10% >10% • Significant improvement in earned ROE, from 5.5% in 2008 to 8.5% in 2009, targeting at least 10% in 2010 • Continued strong operational performance • Anticipate electric distribution rate filing in 2Q 2010 • Benefiting from regular transmission updates through a formula rate plan • Illinois Power Agency’s 2010 procurement plan event scheduled to take place in April-May 2010 • Uncollectibles expense rider tariff approved by ICC in February 2010 • Smart Meter pilot program and rider approved by ICC and underway • Standard & Poor’s raised credit ratings in 3Q09 and Fitch in 1Q10 |
 7 ComEd Credit Facility One of the largest utility bank refinancings launched to-date in 2010, with strong participation and new benchmark pricing • Successfully closed refinancing of $1B revolving credit facility on March 25 – 3-year unsecured facility; initial term to expire 3/25/13 – Use for general corporate purposes and letters of credit – Replaces previous $952M facility that was due to expire on 2/16/11 • Moved the bar on market pricing – Undrawn fee of 0.375%; fully drawn fee of 2.25% – Refinancing deals for similar rated utilities launched late last year priced approximately 0.50-0.75% higher (drawn fee) • Reflects strong relationships with large, diverse bank group – 22 banks in facility – none with exposure of more than 6% – Syndication 1.6x oversubscribed th |
 8 PECO – Electric & Gas Distribution Rate Case Filings On March 31, PECO filed electric and gas distribution rate cases • First electric distribution rate case since 1989 – Act 129 energy efficiency and smart meter costs recovered separately through rider • Last gas delivery rate case in 2008 53.18% 53.18% Common Equity Ratio R-2010-216-1592 R-2010-216-1575 Docket # 2010 (1) 2010 (1) Test Year ROE: 11.75% ROR: 8.95% ROE: 11.75% ROR: 8.95% Requested Returns $1,100 million $3,236 million Rate Base 6.94% (2) $316 million Electric $44 million Revenue Requirement Increase 5.28% 2011 Proposed Distribution Price Increase as % of Overall Customer Bill Gas Rate Case Request PECO executing its post-transition regulatory plan to secure fair and reasonable returns on its distribution investment (1) With pro forma adjustments. (2) Excluding Alternative Energy Portfolio Standards and default service surcharge. Note: Electric and gas rate case filings available on PAPUC website or www.peco.com/know. |
 9 PECO – Timeline for Rate Cases • Filed: March 31, 2010 • Opposing Parties’ Testimony: June 2010 • Rebuttal Testimony: July 2010 • Hearings: August 2010 • Administrative Law Judge (ALJ) Orders: October 2010 • Final Orders Expected: December 2010 • New Rates Effective: January 1, 2011 Note: Dates are based on typical approach to rate cases but the Pennsylvania Public Utility Commission (PAPUC) will set the actual schedule. Expect schedule to be set at pre-hearing with ALJ around mid-May. The PAPUC has a nine-month process for litigation of the rate case filings |
 10 2010 Events of Interest Q1 Q2 Q3 Q4 RPM Auction (May) Uncollectibles rider tariff (2/2) Illinois Power Agency supply procurement RFP (April, results in May) Illinois Primaries (2/2) Pennsylvania Primaries (5/18) Electric and gas distribution rate case filings (3/31) Procurement RFP (May, results in June) Procurement RFP (Sep., results in Oct.) Electric distribution rate case filing (Q2) Illinois Elections (11/2) Pennsylvania Elections (11/2) |