Entergy vs Marathon Petroleum
Side-by-side comparison of AI visibility scores, market position, and capabilities
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.
Findlay OH petroleum refining (NYSE: MPC); largest US refiner 3M barrels/day, CEO Maryann Mannen elected Chairman (Jan 2026), MPLX midstream MLP, Martinez renewable diesel conversion competing with Valero and Phillips 66.
About
Marathon Petroleum Corporation is a Findlay, Ohio-based petroleum refining and midstream company — publicly traded on the New York Stock Exchange (NYSE: MPC) as an S&P 500 Energy component — operating the largest crude oil refining system in the United States with 13 refineries and approximately 3 million barrels per day of crude oil processing capacity across Texas, Louisiana, Illinois, Michigan, Ohio, North Dakota, California, and Washington, along with a majority ownership interest in MPLX LP (NYSE: MPLX), a midstream pipeline, terminal, and marine vessel MLP that gathers, processes, transports, and stores crude oil, natural gas, and petroleum products. In a defining leadership development, Marathon Petroleum's board elected CEO Maryann T. Mannen as Chairman of the Board effective January 1, 2026, succeeding Michael Hennigan who retired after leading the company through the Speedway divestiture and pandemic recovery — consolidating corporate governance leadership in Mannen following her tenure as CEO during which she managed the company's operations and capital allocation strategy. Marathon Petroleum's large-scale refining system (including the Galveston Bay refinery in Texas City as the largest US refinery at 631,000 barrels/day) processes crude oil into gasoline, diesel, jet fuel, and specialty products distributed through branded Speedway (sold to 7-Eleven in 2021) and independent dealer networks and MPLX's logistics infrastructure.
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