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Program active for instant rebates at participating distributors; first solicitation for pilot projects expected late spring 2026. No fixed deadline found on page.
New England Heat Pump Accelerator (Efficiency Maine Rebates) is sponsored by Efficiency Maine (funded by Federal grant through Connecticut Department of Energy and Environmental Protection). This multi-state initiative, supported by federal funding, provides rebates to eligible households in Maine for the installation of high-efficiency heat pump water heaters. The goal is to rapidly increase the adoption of heat pump technology.
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New England Heat Pump Accelerator in Maine - Efficiency Maine Biomass Boilers and Furnaces Geothermal Heat Pump Rebates Income-Based Eligibility Verification Residential Forms and Brochures Best Heat Pump Water Heater Deals Compare Your Home’s Overall Energy Efficiency Compare Home Heating Costs Compare Water Heating Costs Electricity Monitor Loaners Lighting Savings Calculator Heating, Ventilation, and Air Conditioning (HVAC) Multifamily Weatherization Heating, Ventilation, and Air Conditioning (HVAC) Multifamily Weatherization Architecture and Engineering (A&E) Firms Become A Qualified Partner Commercial Heating Calculator Commercial and Industrial Prescriptive Incentives Commercial and Industrial Custom Commercial Property Assessed Clean Energy (C-PACE) Small Business Energy Loans Virtual Customer Consultations Commercial Property Assessed Clean Energy (C-PACE) Long-Term Care Facility Loans Mobile Home Initiative Loans Small Business Energy Loans Residential Forms and Brochures Resources for Municipalities New England Heat Pump Accelerator in Maine The New England Heat Pump Accelerator (Accelerator) is a multistate initiative to rapidly increase the adoption of heat pump technology in single-family and multifamily residential buildings in the New England region.
Maine is one of five states participating in the Accelerator. The other states are Connecticut, Massachusetts, Rhode Island, and New Hampshire. How will the Accelerator be implemented in Maine?
In Maine, the Accelerator’s primary function will be to fund incentives for heat pump water heaters sold at participating distributors and retail stores and installed in Maine homes. Maine’s portion of the Accelerator’s budget is approximately $43 million dollars. Maine will also use Accelerator funds to conduct a range of innovative pilot projects.
The first category of pilot projects will be administered by Efficiency Maine to overcome specific technical, design, and economic barriers to whole-home heat pump adoption. The second category of pilot projects is focused on communities.
This category of pilots seeks to encourage community-level pilot projects focusing on providing consumer information, education and outreach campaigns, coordination, and/or workforce training to address barriers to heat pumps that are experienced by specific classes or communities of customers, such as rural, low-income, and renting residents.
These projects may last one or multiple years, up until the conclusion of the grant period in 2029. The first solicitation for projects is expected in late spring 2026. Maine will be sharing more information about the application process as it becomes available.
If you’d like to receive email notifications about these grant opportunities, please complete the form below. Maine released a Request for Information (RFI) in October 2025 to collect stakeholder input on project priorities, technology solutions, and other ideas for how to deploy the pilot funds in Maine. Why has Maine decided to focus on heat pump water heaters?
Heating up water in a home — for a hot shower, to clean the dishes or run the laundry — is responsible for about 18% of a typical home’s energy use . To save money and reduce pollution, homeowners can switch from a conventional water heater to one that uses heat pump technology.
As the Efficiency Maine Water Heating Cost Calculator shows, heat pump water heaters are extremely energy efficient, consuming less than half as much electricity as a standard electric resistance water heater. It is especially important for homeowners to consider the option of switching to a heat pump water heater when their old water heater nears the end of its useful life (or when it stops working entirely).
To make this switch attractive to homeowners, it needs to be affordable, quick, and easy. Using the Accelerator funds to provide instant discounts at participating distributors and retail stores is a proven strategy to meet these criteria in Maine. How many heat pump water heaters will be funded through the Initiative?
Maine forecasts that it will incentivize more than 30,000 heat pump water heaters with this initiative. New England Heat Pump Accelerator Updates
According to the current listing, eligibility includes: Eligible households in Maine purchasing heat pump water heaters at participating distributors and retailers; pilot project opportunities open to broader participants. Confirm the full requirements in the official notice before applying.
The current listing shows over $1,000 instant discount on heat pump water heater purchases. Verify award ceilings, matching requirements, and allowable costs in the official notice.
New England Heat Pump Accelerator (Efficiency Maine Rebates) is funded by Efficiency Maine (funded by Federal grant through Connecticut Department of Energy and Environmental Protection). Verify program details on the funder's official page before applying.
This opportunity targets applicants in Maine. If your organization operates elsewhere, check the official notice for location requirements.
Applications go through the funder's official portal — the Apply Now link on this page goes there directly.
Parkland Acquisitions and Renovations for Communities (PARC) Grant Program is a grant from the Massachusetts Executive Office of Energy and Environmental Affairs that funds the acquisition and development of public parkland and outdoor recreational facilities. Eligible applicants include Massachusetts cities of any size and towns with 35,000 or more year-round residents that have an established park or recreation commission and an approved Open Space and Recreation Plan. Smaller communities may qualify under small town, regional, or statewide provisions. Awards reach up to $425,000, with a deadline of July 8, 2025. The program supports community green space, conservation, and recreational access across the Commonwealth.
Bats for the Future Fund is a grant from the National Fish and Wildlife Foundation (NFWF), in partnership with the U.S. Fish and Wildlife Service, that funds efforts to slow or halt the spread of white-nose syndrome (WNS) disease and support the recovery of affected bat populations in North America. Funded projects may address disease treatment, habitat conservation, population monitoring, or public education strategies that contribute to bat species survival. Additional support is provided by NextEra Energy Resources through its charitable foundation. Eligible applicants include researchers, nonprofits, universities, and government agencies with relevant conservation expertise. Awards range from $50,000 to $250,000, with the 2025 deadline on August 14, 2025.
Northern California Environmental Grassroots Fund is a grant from Rose Foundation for Communities and the Environment that funds small and emerging grassroots organizations in California building climate resilience and advancing environmental justice. The fund prioritizes groups rooted in historically marginalized communities, including BIPOC, frontline, and low-income populations, with strong advocacy, organizing, and outreach components. Eligible applicants are nonprofit organizations or fiscally-sponsored groups with annual income or expenses of $150,000 or less; government agencies, colleges, and universities are not eligible. Awards typically range from $4,000 to $7,500, with a maximum of $7,500.
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