Ameren vs Entergy
Side-by-side comparison of AI visibility scores, market position, and capabilities
St. Louis MO regulated utility (NYSE: AEE) ~$8.2B revenue; 2.4M electric + 900K gas customers in MO/IL, 250MW solar project near Callaway Nuclear (2028), formula rate in Illinois competing with Evergy.
About
Ameren Corporation is a St. Louis, Missouri-based regulated electric and natural gas utility holding company — publicly traded on the New York Stock Exchange (NYSE: AEE) as an S&P 500 Utilities component — serving approximately 2.4 million electric customers and 900,000 natural gas customers in Missouri and Illinois through two primary regulated subsidiaries: AmerenMissouri (electric and gas in Missouri, including the Callaway Nuclear Power Station — Missouri's only commercial nuclear plant) and AmerenIllinois (electric and gas distribution across central and southern Illinois), through approximately 9,000 employees. In fiscal year 2024, Ameren reported revenue of approximately $8.2 billion, with continued capital investment in transmission upgrades, distribution modernization, and renewable energy additions. Ameren Missouri's clean energy transition includes the announced Reform Renewable Energy Center — a 250-megawatt solar facility near the Callaway Nuclear site, with construction beginning in 2026 and expected to power 44,000 homes by 2028, creating 300 construction jobs. CEO Martin Lyons, who succeeded Warner Baxter in 2022, has maintained Ameren's steady capital investment trajectory targeting 6-8% annual EPS growth through infrastructure modernization and renewable energy additions in both states. The company's transmission infrastructure — spanning MISO (Midcontinent Independent System Operator) in Missouri and PJM Interconnection in Illinois — positions Ameren to benefit from grid investment programs enabling renewable energy integration across the Midwest.
New Orleans Gulf South regulated utility (NYSE: ETR) ~$12B revenue; 1,500 MW new gas gen for Meta data center (Entergy Louisiana), nuclear baseload, Mississippi River industrial corridor competing with Cleco.
About
Entergy Corporation is a New Orleans, Louisiana-based regulated electric utility holding company — publicly traded on the New York Stock Exchange (NYSE: ETR) as an S&P 500 Utilities component — providing electricity generation, transmission, and distribution to approximately 3 million customers across Arkansas, Louisiana, Mississippi, and Texas through four regulated utility subsidiaries: Entergy Arkansas, Entergy Louisiana, Entergy Mississippi, and Entergy Texas, along with Entergy New Orleans, through approximately 13,000 employees. Entergy Louisiana broke ground in 2025 on two new combined-cycle natural gas combustion turbine plants totaling approximately 1,500 megawatts of generation capacity in Richland Parish, Louisiana — directly supporting Meta's new data center development in the region — representing one of the largest generation investments in Entergy Louisiana's recent history, with the facilities projected to save customers $650 million through 2040 through more efficient power generation displacing higher-cost units. CEO Drew Marsh leads Entergy's strategy of executing on the unprecedented data center and industrial load growth in Louisiana, where the combination of affordable land, available water for cooling, reliable power infrastructure, and the Mississippi River industrial corridor creates favorable economics for hyperscale data center siting. Entergy's nuclear fleet (Grand Gulf Nuclear Station in Mississippi, Arkansas Nuclear One, Waterford 3 in Louisiana, River Bend Station in Louisiana) provides low-carbon baseload power that supports Entergy's reliability obligations and serves data center customers' clean energy procurement preferences.
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