Constellation Energy vs Duke Energy
Side-by-side comparison of AI visibility scores, market position, and capabilities
Baltimore largest US nuclear operator (NASDAQ: CEG) at $23.6B FY2024 revenue; 21 reactors, Three Mile Island restarted Sept 2024 for Microsoft AI data center, 24/7 carbon-free power competing with Vistra and NRG.
About
Constellation Energy Corporation is a Baltimore, Maryland-based clean energy company — publicly traded on NASDAQ (NASDAQ: CEG) as an S&P 500 Utilities component with a market capitalization of approximately $70 billion — operating the United States' largest fleet of carbon-free nuclear power plants with 21 nuclear reactors at 13 generating stations across Illinois, Pennsylvania, Maryland, New Jersey, and New York, through approximately 13,000 employees generating approximately 10% of all clean electricity in the United States. In fiscal year 2024, Constellation Energy reported revenue of $23.6 billion. Constellation was separated from Exelon Corporation in February 2022, when Exelon spun off its power generation business as an independent company while retaining the regulated utility subsidiaries (ComEd, PECO, BGE, Pepco, Delmarva, Atlantic City Electric). CEO Joe Dominguez leads Constellation's strategy of capitalizing on the AI data center electricity demand surge — nuclear power's unique combination of 24/7 carbon-free reliability makes Constellation the preferred clean power supplier for tech companies' 24/7 carbon-free electricity commitments that intermittent wind and solar cannot fulfill. Constellation's landmark achievement was the September 2024 restart of Three Mile Island Unit 1 (renamed Crane Clean Energy Center) — the reactor that operated safely for decades before closing in 2019 due to economic competition from cheap natural gas — under a 20-year power purchase agreement with Microsoft to supply the data center campus supporting Microsoft's Azure AI infrastructure in Pennsylvania.
Charlotte NC regulated utility (NYSE: DUK) ~$29B revenue; 8.4M electric customers, Carolinas load growth 8x prior trend from semiconductor/data center boom, 4,000 MW solar by 2034, competing with NextEra and Southern Company.
About
Duke Energy Corporation is a Charlotte, North Carolina-based regulated electric utility holding company — publicly traded on the New York Stock Exchange (NYSE: DUK) as an S&P 500 Utilities component — serving approximately 8.4 million electric customers and 1.7 million natural gas customers across the Carolinas, Florida, Indiana, Ohio, and Kentucky through regulated subsidiary utilities including Duke Energy Carolinas, Duke Energy Progress (North and South Carolina), Duke Energy Florida, and Duke Energy Indiana/Ohio/Kentucky, through approximately 28,000 employees. Duke Energy is one of the largest regulated utilities in the United States with approximately $29 billion in annual revenue, managing a generation fleet spanning nuclear, natural gas, coal (transitioning to retirement), solar, and wind across a 100,000-square-mile service territory. CEO Lynn Good, who has led Duke Energy since 2013, filed the company's 2025 Carolinas Resource Plan responding to unprecedented load growth — North Carolina attracted $19 billion in announced business investments and 25,000+ new jobs in 2025 alone, driven by semiconductor manufacturing, data center construction, and electric vehicle manufacturing — resulting in electricity demand growth projections 8x greater than the prior 15-year trend. The plan calls for 4,000 megawatts of solar capacity by 2034 and battery storage expansion to 5,600 megawatts by 2034 (+2,900 MW from current levels).
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