Company Overview
About Alliant Energy
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.
Business Model & Competitive Advantage
Alliant Energy's regulated utility model addresses the essential energy services need that Midwest residential, commercial, and industrial customers require with the predictability and rate-regulated economics that enable long-term capital investment: Alliant's Iowa and Wisconsin regulators (the Iowa Utilities Board and the Public Service Commission of Wisconsin) approve rate cases that set the allowed return on equity (typically 9-10%) on Alliant's $10+ billion rate base of generation, transmission, and distribution assets — creating the stable, predictable earnings stream that supports Alliant's dividend policy and investment-grade bond ratings. The clean energy transition investment cycle (solar and wind replacing coal capacity through 2030-2040) represents the primary capital deployment opportunity for Alliant, with each megawatt of new renewable generation adding to the rate base that earns the regulated return — aligning Alliant's investment incentive with state renewable portfolio standard requirements and customer decarbonization goals.
Competitive Landscape 2025–2026
In 2025, Alliant Energy competes in the Midwest regulated electric and natural gas utility market with MidAmerican Energy (private, Berkshire Hathaway Energy, Iowa and Illinois), WEC Energy Group (NYSE: WEC, Wisconsin and Illinois electric and gas), and Evergy (NYSE: EVRG, Kansas and Missouri electric) for regulatory approval of capital expenditures, renewable energy project development, and large industrial load growth opportunities driven by data center construction and EV fleet charging in Iowa and Wisconsin. Alliant's DOE Loan Programs commitment positions the company to access below-market federal financing for transmission upgrades that private market financing would price at higher cost — a competitive advantage for grid modernization investment. The 2025 strategy under Lisa Barton focuses on executing the renewable generation build program (adding solar and wind to replace retiring coal capacity), pursuing transmission investment for grid resilience with DOE loan support, and managing the customer rate impact of the clean energy capital program through cost efficiency initiatives.
The Alliant Energy Story
Founders
Company Timeline
Major milestones in Alliant Energy's journey
Leadership Team
Meet the leaders behind Alliant Energy
Lisa M. Barton
Lisa Barton has served as President and CEO of Alliant Energy Corporation since January 2024, leading the company and its two utility subsidiaries, Interstate Power and Light and Wisconsin Power and Light. She joined Alliant Energy in February 2023 as President and COO before being promoted to CEO. Under her leadership, the company completed 1,500 megawatts of solar generation investments in 2024 and continues to strengthen the clean energy element of Alliant's balanced generation portfolio.
John O. Larsen
John Larsen has served as Executive Chairman of Alliant Energy since January 2024, after previously serving as Chairman and CEO. He was elected to the position of executive chairman as part of a planned leadership transition. Larsen has extensive experience in the utility industry and continues to provide strategic guidance to the company's board of directors.
Robert J. Durian
Robert Durian has served as Executive Vice President and CFO of Alliant Energy since February 2020. He is responsible for the company's financial functions, including financial planning, accounting, tax, treasury, investor relations, and risk management. Durian has played a key role in the company's financial performance, including achieving $3.04 earnings per share in 2024.
Alberto Ruocco
Alberto Ruocco has served as Senior Vice President and CIO since September 2023. He leads the company's information technology strategy and digital transformation initiatives, supporting grid modernization and operational excellence across Alliant Energy's service territory.
David de Leon
David de Leon serves as President of Alliant Energy's Wisconsin energy company and Senior Vice President of Operations. He oversees the operations and customer service for Wisconsin Power and Light Company, ensuring reliable energy delivery to customers across Wisconsin.
Open Positions
Reddit Discussions
Key Differentiators
Market Leader
Alliant Energy is recognized as a market leader in the Energy & Utilities sector, demonstrating strong industry presence and customer trust.
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