line technician working on top of a power pole

About Alliant Energy

We use our energy every day to bring our Purpose to life: To serve our customers and build stronger communities.

Alliant Energy Corporation (NASDAQ: LNT) provides regulated energy service to approximately 1 million electric and 425,000 natural gas retail customers across Iowa and Wisconsin.

Our mission statement: We deliver the energy solutions and exceptional service our customers and communities count on – safely, cost-effectively, efficiently and responsibly.

Learn how we're Powering Beyond for you

Alliant Energy employee standing in front of a truck

We're powering beyond the challenges of today to drive what’s next in energy.

Our long-term plan expands our generation capacity. It includes a balanced mix of wind, solar, hydropower, natural gas, coal and energy storage. It is designed to deliver the reliable, cost-effective energy you count on.

Pictured: Rendering of the Columbia Energy Storage Project, the first long-duration energy storage project of its kind to be developed in the United States.

See our Energy Blueprint

Long Duration Energy Storage rendering (Columbia County Wis.)

We take our responsibility as a corporate citizen seriously.

We are stewards of the environment. We aspire to achieve net-zero greenhouse gas emissions from our utility operations by 2050. See all our environmental stewardship goals.

We give our time and energy to support the communities we serve. In 2024, our employee and retiree volunteers logged 80,053 volunteer hours.

Through the Alliant Energy Foundation, we support projects that help families thrive, encourage communities to innovate and protect the natural beauty of Iowa and Wisconsin.

See all our community programs

We promote a culture of belonging.

We want everyone to share their unique perspectives and experiences and be themselves. This helps us all contribute to solving the energy challenges facing our region.

Learn about life at Alliant Energy

Learn more about us:

Our energy companies

We have two public energy companies that 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.

Interstate Power and Light Company (IPL)

Provides electricity to approximately 500,000 retail electric customers in Iowa.
Transports natural gas to approximately 230,000 customers in Iowa.
Regulated by the Iowa Utilities Commission (IUC).
Provides utility services to incorporated communities and utilize nonexclusive franchises that cover the use of public rights-of-way for utility facilities in incorporated communities for a maximum term of 25 years.
Sells electricity to wholesale customers in Minnesota, Illinois and Iowa.

Wisconsin Power and Light Company (WPL)

Provides electricity to approximately 500,000 electric retail customers in Wisconsin.
Transports natural gas to about 200,000 natural gas retail customers in Wisconsin.
Regulated by the Public Service Commission of Wisconsin (PSC).
Operates in municipalities pursuant to permits of indefinite duration and state statutes authorizing utility operation in areas annexed by a municipality.
Sells electricity to wholesale customers in Wisconsin.

Operations at a glance

Number of electric customers	1,005,882
Number of natural gas customers	430,699
Number of employees	2,998
Operating revenues (year-end 2024)	$4 billion
Total assets (year-end 2024)	$22.7 billion
Headquarters	Madison, Wisconsin
Service area	54,369 square miles in Iowa and Wisconsin
Electric generation	33.7 million megawatt-hours per year
Maximum summer peak hour demand	5,638 megawatts
Utility natural gas sold and transported	166,875 thousands of dekatherms

All numbers are approximations. Updated 2/21/25.

How we're organized

Energy business

Alliant Energy has two energy generation and distribution subsidiaries, one in Wisconsin and one in Iowa. The company has a strategic plan built upon two key elements: Growth and Optimization.

Growth - The growth element of the strategic plan includes accelerating the growth of customers’ electric and gas usage and expanding our portfolio of energy resources to include more clean and renewable energy.
Optimization - The second key element of the strategic plan focuses resources on providing reliable electric and natural gas service to customers in our Iowa and Wisconsin service areas. We do this through continued modernization of the power grid, upgrades to the gas distribution system and optimization of the generation fleet.

Alliant Energy owns a portfolio of electric generating facilities operating on a diverse mix of fuels, including coal, natural gas and renewable resources. The output from these generating facilities is supplemented with purchased power.

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 add to earnings but do not require significant amounts 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, human resources, marketing, communications, legal, regulatory, information technology, environmental and safety management and more.

Commitment to compliance

A message from our Corporate Compliance department

Honesty and integrity have always been important to Alliant Energy. We’re proud to be a company that values ethical behavior and understands the importance of compliance.

To ensure a continued focus on integrity and compliance, we offer a toll-free ethics hotline and a web reporting system run by an independent company.

Employees, customers, suppliers or any concerned citizen can call 1-844-218-3357 at any time to speak confidentially with a professional interviewer. These experts are trained in taking down information about potentially unethical behavior. A web reporting system is also available.

For customer service concerns please call 1-800-ALLIANT (800-255-4268).

Angela Arrington
Compliance Program

Alliant Energy's Code of Conduct

Our Code of Conduct sets forth the minimum standards of ethical conduct. These guidelines are applicable to all employees at every level, members of the Alliant Energy Board of Directors, vendors, contractors and suppliers.

Alliant Energy Code of Conduct.pdf

If you have a question about the Alliant Energy Code of Conduct, email us at [email protected].

For additional corporate governance information, visit our Investor Relations site.

Alliant Energy's Core Values

Our six Core Values shape everything we do.

Live safety. Everyone. Always.

Our first priority is that nobody gets hurt.

Do the right thing.

We keep our promises and conduct our business openly and honestly.

Care for others.

Together we create a workplace where people feel like they belong and can use their unique backgrounds, talents and perspectives to their fullest potential.

Make things better.

We partner with our customers and communities to solve problems, create opportunities and help make life better.

Act for tomorrow.

We use resources wisely, care for the environment and continuously improve ourselves and our company.

Think beyond. Be bold.

We create and embrace change, innovate beyond current practices and use our curiosity to find new solutions.

Our leadership

Alliant Energy executives and board of directors.

Read bios

Annual report

An overview of our annual report, with links to all financial performance data.

See the report

Responsibility report

Responsible energy delivery through a balanced resource portfolio.

Read the report

Awards and recognition

We are honored to be recognized by a variety of organizations.

Learn more

Communities we serve

A listing of the communities we serve in Iowa and Wisconsin.

See the list

News Center

Recent announcements and news releases.

See news