Alliant Energy Interstate Power and Light (Gas) - Residential Energy Efficiency Program

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Last modified on February 12, 2015.

Financial Incentive Program

Place Minnesota

Name Alliant Energy Interstate Power and Light (Gas) - Residential Energy Efficiency Program
Incentive Type Utility Rebate Program
Applicable Sector Residential
Eligible Technologies Boilers, Building Insulation, Comprehensive Measures/Whole Building, Duct/Air sealing, Furnaces, Programmable Thermostats, Water Heaters, Windows
Active Incentive Yes

Implementing Sector Utility
Energy Category Energy Efficiency Incentive Programs
Amount ENERGY STAR New Construction: $600-$3500/home

Home Energy Audit: Free
Boilers: $150 or $400 depending on AFUE
Furnaces: $250 or $400 depending on AFUE
Programmable Thermostats: $25
Insulation: 70% of cost
Water Heaters: $50
Windows/Sashes: $20/each
Appliance Recycling: $20

Eligible System Size Water Heaters: 40 gallon tank or greater

Windows/Sash: minimum size of 8 sq. ft. each.
Boilers/Furnaces: Maximum 300,000 Btu

Equipment Requirements Boilers: minimum AFUE rating of 85%

Furnaces: minimum AFUE rating of 92% Programmable Thermostats: must be Energy Star rated Attic Insulation: Insulation must be minimum R-19 and a maximum of R-38 Water Heaters: 40 gallon tank or greater, minimum EF of .62 Windows/Sash: Must be Energy Star rated for northern climate zone (U-factor .35 or less)

Installation Requirements Alliant Energy must supply primary heating energy.

Home must be built before January 1, 2001. Renters need owner’s prior approval (Alliant Energy can contact owner). A Home Energy Audit must be completed before new insulation is installed.

Maximum Incentive Attic and Wall Insulation: $1000


Last DSIRE Review 2012-06-12
Last Substantive Modification
to Summary by DSIRE

Incentive Source The given value was not understood.


Interstate Power and Light (Alliant Energy) offers a number of rebates for energy efficiency for Minnesota residential customers a variety of high efficiency heating and cooling measures, including water heaters, gas furnaces, gas boilers, windows, insulation, and thermostats. After completing an energy audit, a residential customer is eligible for up to $500 in rebates for attic and wall insulation. Qualifying attic insulation will have a rating of R-19 to R-38. More details, the incentive application, and an energy audit request form are available on the program web site.

Customers are eligible for room air conditioners and water heaters through the Appliance Rebate Program. Room air conditioners qualify for a rebate of $25 and water heaters qualify for a rebate of $50. Room Air Conditioners are limited to a maximum of three rebates. Qualifying windows and sashes are eligible for a rebate of $20; windows should be certified by the National Fenestration Rating Council and have a rating of a least .35 or less U-Factor. Further information can be found at the program web site.

Incentive Contact

Contact Name Alliant Energy-IP&L

Address 4902 North Biltmore Lane

Place Madison, Wisconsin
Zip/Postal Code 53707
Phone (800) 255-4268


  • Incentive and policy data are reviewed and approved by the N.C. Solar Center's DSIRE project staff.[1]


  1. 1.0 1.1  "Database of State Incentives for Renewables and Efficiency (DSIRE)"