Alliant Energy vs Constellation Energy
Side-by-side comparison of AI visibility scores, market position, and capabilities
Madison WI Midwest regulated utility (NASDAQ: LNT) at $3.04 EPS (2024); 1,500 MW solar + 1,800 MW wind completed, coal exit by 2040, new CEO Lisa Barton (Jan 2024), DOE loan commitment for grid resilience competing with WEC Energy.
About
Alliant Energy Corporation is a Madison, Wisconsin-based regulated electric and natural gas utility — publicly traded on NASDAQ (NASDAQ: LNT) as an S&P 500 Utilities component — serving approximately 1 million electric customers and 430,000 natural gas customers in Iowa and Wisconsin through two regulated subsidiaries: Interstate Power and Light Company (IPL, Iowa) and Wisconsin Power and Light Company (WPL, Wisconsin), through approximately 3,000 employees. In fiscal year 2024, Alliant Energy reported ongoing earnings per share of $3.04 (up from $2.82 in 2023), meeting analyst expectations, with 2025 guidance affirmed at $3.15-$3.25 per share. CEO Lisa Barton assumed leadership in January 2024, initiating the next phase of Alliant's clean energy transition strategy. The company completed 1,500 megawatts of solar generation investments in 2024, supplementing its existing 1,800 MW wind portfolio to accelerate the retirement of coal-fired generation — with plans to cease coal operations at Wisconsin facilities before 2030 and eliminate coal from the entire fleet by 2040, targeting net-zero carbon emissions by 2050. Alliant's foundation traces to 1917 through predecessor utility companies serving the Upper Midwest. The US Department of Energy's Loan Programs Office issued a conditional commitment to Alliant for loan support to improve grid resilience in Iowa and Wisconsin, enabling investment in transmission and distribution modernization that supports renewable energy integration and grid reliability under increasing extreme weather events.
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.
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