Alliant energy headquarters details
Madison, Wisconsin, United States
Madison
Wisconsin
53706
United States
Location map
Open in Google MapsAll Alliant energy office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Madison HQ | Wisconsin | United States | Headquarters |
About Alliant energy
Alliant energy (Nasdaq (NASDAQ): LNT) is headquartered in Madison, Wisconsin, United States. Founded in , the company operates across 2 countries with approximately 2,948 employees worldwide.
Where is Alliant energy's main office?
Alliant energy's main headquarters office is located at Madison, Wisconsin, United States, Madison, Wisconsin 53706. This serves as the company's primary corporate address and is home to its executive leadership team.
Alliant energy regional offices
Beyond its headquarters in Madison, Alliant energy maintains 124 offices across 2 countries. Regional offices span 2 countries.
Alliant energy contact information
The main switchboard for Alliant energy headquarters can be reached at 608-458-3311. For investor relations, visit alliantenergy.com/investor-relations.
What does Alliant energy do?
Alliant Energy Corporation provides public-utility services. The Company supplies electricity, natural gas, and water to residential and commercial customers. Alliant Energy serves customers in the States of Illinois, Iowa, Minnesota, and Wisconsin.
Frequently asked questions
Where is Alliant energy headquarters?
Alliant energy's headquarters is located at Madison, Wisconsin, United States, Madison, Wisconsin 53706, United States.
How many offices does Alliant energy have?
Alliant energy operates 124 offices across 2 countries as of 2026.
What is Alliant energy's corporate address?
The official corporate address is Madison, Wisconsin, United States, Madison, Wisconsin 53706.
When was Alliant energy founded?
Alliant energy was founded in and has grown to employ approximately 2,948 people worldwide.
What is Alliant energy's phone number?
The main phone number for Alliant energy headquarters is 608-458-3311.