Exelon (EXC) 8-K Exelon Reports Third Quarter 2018 Results

Q3 2018 GAAP Earnings $0.76 per share We have met or beaten1 the midpoint of our earnings guidance Adjusted earnings range for 13 of the past 15 quarters of $0.88 per share* OPERATING METRICS Zero Emissions Credit (ZEC) Utilities Legality of Illinois’ and New York’s zero ComEd’s smart meter installation completed emissions credit (ZEC) programs upheld, 3 years ahead of original schedule and more supporting the clean, resilient, aordable than $20 million under budget electricity nuclear power provides Top decile performance for ComEd and PHI in CORPORATE STEWARDSHIP CAIDI (outage duration) Gas Odor response remains strong, Climate Leadership performing in top decile across the utilities Council (CLC) Customer performance metrics continue to be solid across all utilities, with BGE and Joined CLC in ComEd performing in top decile for Customer support of carbon Satisfaction and PHI performing in top decile dividends policy that for Service Level combats climate change while unleashing innovation HeForShe 93.6% Q3 2018 Nuclear Capacity Factor² Concluded successful STEM Innovation Leadership Academy for teen girls aimed at advancing gender equality and developing future leaders 95.7% Q3 2018 Renewables energy capture Equality Act Pledge 95.8% Exelon joined the Human Rights Campaign’s Q3 2018 Power dispatch match Business Coalition in pledging to support passage of the Equality Act, encouraging workplace fairness for LGBTQ people 39.7 TWhs Owned and operated Q3 production * For reconciliation of GAAP Net Income to Adjusted (non-GAAP) Operating Earnings, refer to the tables in our press release (1) Non-GAAP Earnings are used for setting guidance and comparing to actual results (2) Excludes Salem and EDF’s equity ownership share of the CENG Joint Venture