Emergency? Call 1-800-ALLIANT (800-255-4268)

Operations and Organization

Alliant Energy truck

Alliant Energy Corporation (NYSE: LNT) is a Midwest U.S. energy company with annual operating revenues of more than $3 billion. Our company is primarily engaged in electric generation and the distribution of electricity and natural gas. Alliant Energy’s utility businesses, Interstate Power and Light and Wisconsin Power and Light, serve approximately 1 million electric customers and 420,000 natural gas customers in Iowa, Wisconsin and Minnesota.

Headquartered in Madison, Wisconsin, Alliant Energy has approximately 4,200 employees and more than 29,000 shareowners of record. Based on electric sales, the largest cities served in Iowa and Wisconsin are Cedar Rapids and Janesville, respectively.

Operations at a glance

For more than 100 years, Alliant Energy and our predecessor companies have kept homes warm, lights burning and factories running across the upper Midwest and around the world.

  • Approximately 4,200 employees across the country.
  • Operating revenues of $3.3 billion (year-end 2014).
  • Total assets of more than $12 billion (year-end 2014).

In addition, our focus extends beyond our energy operations. Every day, we demonstrate our commitment to community involvement.

How we're organized

Alliant Energy's utility operations serve about 1.4 million customers in Iowa, Minnesota and Wisconsin. Our service territory covers 69,000 square miles in the heartland of America and includes 9,700 miles of electric transmission lines and more than 9,000 miles of natural gas main.

We maintain a strong fleet of fossil fuel and renewable generating facilities across the upper Midwest, generating more than 30 million megawatt hours of electricity each year.

Utility business
Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL) are Alliant Energy’s two utility subsidiaries. As the primary targets of our future capital investments, the utilities also represent our growth platform. The strategic plan for Alliant Energy’s utility operations is concentrated on:

Non-regulated businesses
Alliant Energy Resources is the parent company of Alliant Energy’s non-regulated businesses. The strategic plan for Alliant Energy’s non-regulated operations involves maintaining a portfolio of businesses that are accretive to earnings but not significant users of capital.

Learn more about our non-regulated businesses

Support services
Alliant Energy Corporate Services, Inc. supports the company with traditional administrative functions including strategy, accounting, communications, legal, regulatory, information technology, environmental and safety management and more.