Alliant Energy Corporation

Alliant Energy Corporation is a public utility holding company headquartered in Madison, Wisconsin, primarily engaged in providing regulated electric and natural gas services. Its mission is to deliver energy solutions and exceptional service to its customers and communities safely, cost-effectively, efficiently, and responsibly.

Through its utility subsidiaries, Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL), Alliant Energy serves approximately 1 million electric and 430,000 natural gas retail customers across Iowa and Wisconsin. The company's core offerings include electricity generation, transmission, and distribution, as well as natural gas distribution, supported by a diverse energy portfolio that increasingly emphasizes wind, solar, and other renewable resources.

In recent news, Alliant Energy reported strong first-quarter 2026 results and reaffirmed its full-year guidance, driven by significant growth in data center contracts, which now represent approximately 3.4 GW of total contracted demand. Lisa Barton serves as the President and CEO. The company is a component of the S&P 500 and is actively pursuing a clean energy transition, with a goal to achieve net-zero greenhouse gas emissions from its utility operations by 2050, positioning itself as a leading owner-operator in regulated wind and solar energy.