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• Incorporated in 1981, Alliant Energy Corporation is a public utility holding company. It is comprised of several subsidiaries which provide electricity to northern Iowa, southern Minnesota, Illinois and Wisconsin.

  The company also provides non-regulated services, including ground transportation and wind and geothermal energy engineering.

• Fast Facts

  1. Stock symbol: NYSE: LNT
  2. Annual revenue (2007): $3.36 billion
  3. Primary subsidiary: Interstate Power and Light Company (IPL)
  4. Primary subsidiary: Wisconsin Power and Light Company (WPL)
  5. Incorporated: 1981
  6. Industry: Electricity
  7. Phone: 608.458.3311
  8. Fax: 608.458.0100
  9. HQ: Madison, WI
  10. CEO: William D. Harvey
  11. CFO: Eliot G. Protsch
  12. Employees: 8,500

• Customer Contact

  • Phone: 1.800.ALLIANT (800.255.4268)
  • Email: customercare@alliantenergy.com
  • Fax: 608.458.0100
  • Mail:
    • Alliant Energy
    • 4902 North Biltmore Lane
    • P.O. Box 77007
    • Madison WI 53707-1007

• Emergency Contacts

  • Report outage (IPL): 1.877.740.5050
  • Report outage (WPL): 1.800.862.6261
  • Report gas emergency (IPL): 1.800.255.4268
  • Report gas emergency (WPL): 1.800.862.6263

• Related Mahalo Pages

  MidAmerican Energy | Wisconsin Energy | Xcel Energy | Southern Company

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