Energy efficiency rebates in Maine.
Every federal, state, and utility incentive for heat pumps, insulation, air sealing, and weatherization in Maine — cross-referenced and kept current.
Tell us about your project. We'll match you with local pros and every rebate you qualify for.
Efficiency Maine Trust
- Type
- Quasi State
- Website
- www.efficiencymaine.com
- Phone
- (866) 376-2463
- IRA allocation
- $72M
Active rebate programs
8 programs currently accepting applications in Maine.
| Program | Amount | Eligibility | Status |
|---|---|---|---|
| Heat Pumps (Any Income) | $1,000/unit (max $3,000) | All homeowners | Active |
| Heat Pumps (Moderate Income) | $2,000/unit (max $6,000) | AGI up to $70K single / $100K joint | Active |
| Heat Pumps (Low Income) | $3,000/unit (max $9,000) | MaineCare, HEAP, SNAP, or TANF | Active |
| Whole-Home Heat Pump Bonus | $500 bonus | Whole-home upgrade, March-Dec 2026 | Active |
| Insulation & Air Sealing (Any Income) | 40% of cost up to $4,000 | All homeowners, lifetime limit | Active |
| Insulation & Air Sealing (Moderate) | 60% of cost up to $6,000 | Income-qualified | Active |
| Insulation & Air Sealing (Low Income) | 80% of cost up to $8,000 | Income-qualified | Active |
| Green Bank Home Energy Loans | 0% APR 1-yr / 5.99% 5-yr / 7.99% 10-yr | Up to $25,000, no lien required | Active |
Run the numbers for Maine.
Free, no account needed. Every figure is cited, so you have a benchmark before a Maine contractor quotes you one.
IRA implementation status
How Maine is implementing the Inflation Reduction Act home energy rebates.
Metro areas in Maine
Local utility programs and municipal incentives by metro area.
Central Maine Power. No separate municipal incentives — all through Efficiency Maine.
Versant Power Eco Rates for heat pumps. CDBG weatherization.
Auburn has ARPA-funded match for Efficiency Maine rebates.
Local tools with Maine prices
Local tariff and fuel-survey defaults, with clearly labeled alternatives.
Rebates are step one
Once you know what Maine pays, here's the rest of the path: what order to do the work in, and what belongs on a fair quote.
What order to do it in
Envelope first, equipment second — how to sequence a retrofit to your budget and your rebates' deadlines.
How to read a quote
What belongs on a heat pump or insulation quote, and the red flags that mean keep shopping.
What attic insulation costs
Per-square-foot prices by material, and why this is the work rebate programs subsidize hardest.
Claim rebates after install
The document kit, the application walkthrough, and the mistakes that get claims rejected.
Rebates cover part of it. Here's the rest.
What Maine pays is the first rung. These cover the money questions underneath it: the 2026 federal rules, the state and utility loan programs worth checking before a bank, and the borrowing routes that come after.
How to pay for it
The whole money picture in order of cost: rebates first, then low-interest loans, then borrowing.
State energy loans
The state and utility loan programs we have verified at the administrator, with rates and conditions.
The 2026 rebate rules
What DOE Program Notices 26-1 and 26-2 changed about HEAR and HOMES, and which states are live.
Latest Maine energy news
Recent Maine rebate, policy, and efficiency coverage from our monitored sources.
Meter socket adapters are approved by 86 utilities across 33 states
A new device called a meter socket adapter (MSA) is now approved for customer use by 86 utilities in 33 states, according to a regulatory filing from Efficiency Maine Trust, the Maine Office of the Public Advocate, and consultancy EquinoxDG. An MSA attaches to your home's electric meter socket and connects to solar panels, a battery, or an EV charger, bypassing the main electrical panel. That can save you from a costly panel upgrade when adding this kind of equipment. Even where a state allows MSAs, not every local utility does. Maine is one example: the state's utility CMP has raised safety concerns, though device certification to a safety standard called UL 414 is meant to address that. The filing argues MSAs matter most for home batteries. In Maine, using a Tesla MSA for a battery installation reportedly saves about $700 in parts and two or more hours of electrician labor compared with other approved wiring methods. Lower installation costs make programs like Efficiency Maine's small battery incentive more worthwhile for homeowners, since batteries can earn money by sending power back to the grid at peak times. As an example, Efficiency Maine projects that a customer using 600 kWh a month who installs a 15 kWh, $20,000 battery could earn about $500 a year in grid-sharing payments plus $500 a year in savings by shifting usage to cheaper off-peak hours, cutting the battery's net cost in half over ten years. A household with higher usage, such as one with an EV and a heat pump, could see similar savings with a larger, 30 kWh battery. Whether any of this applies to you depends on what your own state and utility currently allow, so it's worth checking local rules before planning a battery or solar installation.
Winter Tips to Help Mainers Keep Warm and Save Energy
Heating fuel costs are high again this winter, and Efficiency Maine has put out a list of low-cost ways to cut how much energy your home uses to stay warm. Several of the tips are simple fixes you can do yourself: caulk small cracks and gaps, use spray foam for bigger openings, add door sweeps (peel-and-stick, cut to size with scissors), and apply weather stripping around doors and windows. Foam gaskets behind outlet covers and switch plates also block drafts, though you should follow the included instructions to avoid touching exposed wiring. For windows, adding a second layer — storm windows, shrink film, or interior inserts — cuts heat loss. If you have rarely used doors or windows, like one leading to an unheated basement, rope caulk makes a removable seasonal seal you can peel off and reuse come spring. Inside, check that floor vents and registers aren't blocked by furniture or rugs, and that ducts are sealed and connected. If you heat with a boiler or furnace, having it cleaned and serviced each year keeps it running safely and efficiently, and extends its life. If your home has heat pumps, Efficiency Maine has a separate guide on getting the most savings out of them. Efficiency Maine also offers a free Energy Efficiency Tips booklet (downloadable, or mailed on request) with more suggestions, along with online tools to compare annual heating costs across different systems and estimate water-heating costs for your household.
Ready to see what you qualify for in Maine?
Tell us about your project and we'll match you with up to 3 licensed local contractors. Every quote itemizes the Maine incentives you qualify for. Free, no obligation.
Maine: up to $8,000 back right now
Get quotes