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

Insulate & Weatherize Your Home



Upgrading attic insulation from three inches to 12 inches can cut your heating bills by 20 percent - and air conditioning bills by 10 percent.

Advice from energy experts at our PowerHouse: Home Comfort Tips site

Find an energy-smart insulation dealer

You can find an energy-smart insulation contractor or retailer by using our online Dealer Locator. These professionals participate in Alliant Energy's Energy Efficiency Participating Dealer program, which ensures energy expertise, quality workmanship and excellent customer service.

Cash in with money-saving incentives

If you get your heating energy from Alliant Energy, you might be eligible for our professional Home Energy Assessment - and great cash rebates when you upgrade your weatherizing and attic insulation!

new rule


You can save more than $150 each winter on your heating bills by simply weatherizing your home. It can be a quick, easy, inexpensive project that takes one Saturday afternoon. And all supplies can be bought at your local home store.

Our Powerhouse TV weatherizing page has loads of helpful information on:

  • Caulking windows and openings
  • Installing plastic window film
  • Insulating gaskets behind the wall outlets and switch covers
  • Attic weatherizing
  • Fireplace weatherizing
  • and more!

new rule

More information

Insulating and weatherizing your home [PDF]
101 easy ways to save energy [PDF]