At Home

The following incentives are available for energy efficiency upgrades.

SolutionsEfficiency Maine Income-Eligible or Home-Value-Eligible Maximum IncentiveEfficiency Maine Any Income Maximum Incentive
Air Sealing and Energy Assessment$600$500
Clothes Washers$50$50
ECM Circulator Pumps$75 – $250$75 – $250
Electric Vehicles$2,000 – $7,500$500 – $1,000
Geothermal Systems$3,000$3,000
Heat Pump Water Heaters100% of installed cost$850 – $950
Heat Pumps$2,400$1,200
Insulation$8,000 (low income)
$6,000 (moderate income)
Natural Gas “Combi” Boilers*$300$300
Natural Gas On-Demand Water Heaters*$300$300
Pellet Boilers$6,000$6,000
Room Air Purifiers$25$25

* Rebate amounts and loan eligibility vary according to natural gas utility.

Eligibility requirements apply. Program and incentives subject to change or termination.


Efficiency Maine offers home energy loans to help pay for energy upgrades. Maine homeowners can borrow up to $15,000 over 10 years with no fees and interest rates as low as 4.99% APR. Electric vehicles are not eligible.

Non-Efficiency Maine Incentives

Natural gas utilities: Natural gas customers may be eligible for additional rebates from their utility. Contact your natural gas provider for more information.

2023 Federal Tax Credits:

  • Battery storage: 30% no cap
  • Electric vehicles: $7,500
  • Electric vehicle chargers: $1,000
  • Geothermal: 30% no cap
  • Solar: 30% no cap

30% up to the following annual maximums:

  • 200+ amp circuit panels: $600
  • Energy audits: $150
  • Exterior doors: $250/door (max 2 doors)
  • Fans: $600
  • Furnace/boilers: $600
  • Heat pumps: $2,000 
  • Heat pump water heaters: $2,000
  • Insulation and air sealing: $1,200 
  • Windows: $600
  • Wood/pellet stove/boilers: $2,000

Please note this is not a complete list.