Alliant Energy Interstate Power and Light (Gas) - Business Energy Efficiency Rebate Programs

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Local Government
State Government
Federal Government
Multifamily Residential
Savings Category: 
Geothermal Heat Pumps
Equipment Insulation
Water Heaters
Heat Pumps
Air conditioners
Steam-system upgrades
Programmable Thermostats
Duct/Air sealing
Building Insulation
Motor VFDs
Comprehensive Measures/Whole Building
Custom/Others pending approval
Food Service Equipment
Vending Machine Controls
LED Lighting
Commercial Refrigeration Equipment
Maximum Rebate: 

Building Sealing: Up to $1,500
Insulation: $5,000 (each type)
Sealing: $1,500

Program Info
Sector Name: 
Interstate Light and Power (Alliant Energy)
Program Type: 
Rebate Program
Rebate Amount: 

Heating & Cooling
Air Conditioners: $200 - $650, depending on SEER
Air-Source Heat Pumps: $400 - $800, depending on SEER
Chillers: $7 - $25/ton
Chiller Pipe Insulation: $2/linear ft.
Geothermal Heat Pump: $350 - $1,600/ton
Hotel Key Card System: $50 or $70/control
Natural Gas Boiler: $150 - $300
Natural Gas Boiler Pipe Insulation: $2/linear ft.
Natural Gas Furnace: $100 - $700
Package Terminal Air Conditioner: $40
Premium-Efficiency Air Conditioner: $50/ton
Steam Trap: $100
System Tuneup: $0.35/MBTU, $10/ton, or $20/ton
Thermostats: Up to $50

Insulation & Air Sealing
Building Sealing: 70% of total cost
Duct Insulation: $0.30/linear ft.
Duct Repair & Sealing: $0.15/linear ft.
Insulation: 70% of assessor’s estimate or 70% of installed cost, whichever is less

Exit Signs: $5 or $10/fixture
LEDs: $10 - $50/unit
Lighting Evaluation: Free
Metal Halide Replacement Lamp: $3/lamp
Pulse Start or Ceramic Metal Halide: $25 or $50/fixture

Computer Equipment: $5 - $10
Custom: 150% of the annual energy dollar savings
Energy Assessment: Free
Food Service Equipment: $40 - $1,500
Freezer/Refrigerator Recycling: $50
Multi-Family New Construction: $0.25 - $1/sq. ft.
New Construction: $0.60 - $1.90/Therm, plus modeling and design assistance
Room A/C Recycling: $25

Motors & Drives
Motors: $30 - $1,650
Variable Frequency Drives: $35/HP

Anti-Sweat Heater Control: $35
Display Case Night Cover: $7/linear ft.
ECM Motor for Refrigerated Display Case: $100
Refrigeration Lighting: $2/linear ft. or $30
Refrigeration Tune-Up: $20/ton (non-self contained) or $50/year (self-contained)
Scroll Compressor: $70
Vending Machines/Controller: $75 or $50, respectively
Walk-In Refrigerators & Freezers: $5 - $100

Water Heating
Drain Water Heat Transfer System: $400
Spa & Hot Tub Cover: $7/sq. ft.
Swimming Pool Cover: $0.50/sq. ft.
Water Heater: $75 - $500


Interstate Power and Light (IPL) offers a wide variety of incentives for commercial customers to save energy in eligible facilities, whether they are upgrading existing facilities or building new ones. IPL also offers a free business energy audit program. Landlords and renters of multi-family homes can also take advantage of various cash-back rewards for energy-efficient equipment in the residential and commercial programs.

Existing Facilities

IPL offers standard rebates for a variety of appliances; heating, cooling and hot water equipment; lighting; food service and refrigeration equipment; premium efficiency motors and variable speed drives; and vending machine controllers. A Cash Rewards Booklet can be found on the program web site outlining incentive amounts and program guidelines. This booklet details which incentives are specifically available to gas and electric customers.

Commercial New Construction

IPL's Commercial New Construction program offers commercial customers incentives for both the design of high efficiency buildings as well as the construction. Design team incentives are based on the square footage of the building. Construction incentives are per kilowatt-hour plus an additional per therm rebate. Further information on incentive amounts, construction specifications, and how to apply are located on the program web site.