Operations, values and compliance

Alliant Energy Corporation (NASDAQ: LNT) provides regulated energy service to 995,000 electric and 425,000 natural gas retail customers across Iowa and Wisconsin.

With a focus on powering beyond the market challenges of today, Alliant Energy is committed to powering what’s next in energy. Guided by our purpose-driven strategy to serve customers and build stronger communities, our mission is to deliver the energy solutions and exceptional service our customers and communities count on – safely, efficiently and responsibly.

Alliant Energy takes its responsibility as a corporate citizen seriously. We are thoughtful stewards of the environment and supporters of the communities in which we do business. We aggressively pursue emerging technologies and safe, sustainable methods of energy production.

We are also an Equal Opportunity Employer and appreciate the differences and perspectives a diverse culture brings to our work environment, company and customers. We recognize and respect diversity and take pride in providing an inclusive work environment. This has earned Alliant Energy placement on the Nasdaq CRD Sustainability Index, Bloomberg’s Gender-Equality Index and the S&P 500 index.

We have two public energy companies: Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL). Both companies are principally engaged in the generation and distribution of electricity to retail electric customers, along with the distribution and transportation of natural gas to customers in primarily rural communities across Iowa and Wisconsin.

IPL provides electricity to approximately 500,000 retail electric customers and transports natural gas to approximately 225,000 customers across Iowa. As directed by the IUB, we provide utility services to incorporated communities and utilize non-exclusive franchises, which cover the use of public rights-of-way for utility facilities in incorporated communities for a maximum term of 25 years. In Iowa, we also sell electricity to wholesale customers in Minnesota, Illinois and Iowa.

WPL provides electricity to approximately 495,000 electric retail customers and transports natural gas to about 200,000 natural gas retail customers across Wisconsin. We operate in municipalities pursuant to permits of indefinite duration and state statutes authorizing utility operation in areas annexed by a municipality. In addition, we sell electricity to wholesale customers in Wisconsin.

Operations at a glance

Number of electric customers
Number of natural gas customers
Number of employees
Operating revenues (year-end 2022)
$4.2 billion
Total assets (year-end 2022) $20.2 billion
Headquarters Madison, Wisconsin 
Service area 54,369 square miles in Iowa and Wisconsin
Electric generation 33 million megawatt-hours per year
Maximum summer peak hour demand 5,629 megawatts
Utility natural gas sold and transported 159,833 thousands of dekatherms

All numbers are approximations. Updated 2/24/23 .

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