Biomass boiler grants in England and Wales come through the Boiler Upgrade Scheme, which pays a fixed £5,000 toward a qualifying installation and now runs until 2028. Scotland offers up to £7,500 through Home Energy Scotland, plus an optional interest-free loan of the same amount. In the United States, the federal tax credit that covered residential biomass heating expired on 31 December 2025, and no equivalent replacement is in place for 2026.
The £5,000 is deducted from your installer’s invoice, so the money never passes through your hands. The scheme is funded by the UK government and administered by Ofgem.
Who Qualifies for the £5,000 Grant
Biomass boilers face tighter eligibility rules under the Boiler Upgrade Scheme than heat pumps do. Most applicants are screened out at the property stage, not the equipment stage.
- The property must have no connection to the mains gas network. If a gas main runs to your home, you cannot get a biomass grant even if you never use gas.
- The property must be in a rural area. Urban and suburban homes are excluded regardless of their fuel setup.
- The system must replace an existing heating arrangement. Most new-build developments are ineligible, and self-build properties are specifically excluded from biomass grants (though they can still qualify for heat pump grants).
- Social housing is excluded, including any rental or owned accommodation provided at below-market value and shared ownership arrangements.
You will also need a valid Energy Performance Certificate. An earlier version of the scheme blocked applications where the EPC recommended loft or cavity wall insulation. That requirement has been dropped. Recommendations may still appear on your EPC, but they no longer stop the grant.
What Counts as an Eligible Biomass Boiler
The grant does not apply to just any wood-burning appliance. The rules set specific technical limits.
The boiler must be a standalone unit that provides both space heating and domestic hot water. A system that only heats radiators does not qualify, and neither does one paired with a fossil fuel backup. It has to be the sole heating system for the property.
Total heating capacity cannot exceed 45 kilowatts thermal. That ceiling covers almost all homes and small non-domestic buildings; above it, the system falls outside the scheme entirely.
Heat has to be distributed by liquid, typically water or a glycol mix. Direct-heat appliances like wood-burning stoves that simply radiate warmth into the room they sit in do not qualify. Cooking appliances are also excluded.
Emissions are capped as well. The scheme carries forward the nitrogen oxide and particulate matter limits that applied under the old Renewable Heat Incentive, and your installer must provide an emissions certificate proving the boiler meets them. All equipment must carry MCS product certification.
How the Application Works
The Boiler Upgrade Scheme is installer-led. You do not submit the application yourself. An installer certified by the Microgeneration Certification Scheme (MCS) files it through their account on Ofgem’s portal. You can find certified installers through the MCS “Find an Installer” tool or by calling the MCS helpdesk. Check the certification is current before signing anything, because if it lapses between quote and install, the grant falls through.
After your installer submits, Ofgem will contact you to confirm the installer is acting on your behalf. You have to respond. Miss that step and the application stalls.
Once Ofgem approves, it issues a voucher with a fixed validity window. The installation must be completed and the voucher redeemed inside that window; miss it and the voucher expires, meaning a fresh application from scratch. After commissioning, the installer submits evidence of the completed work through Ofgem to redeem the voucher. The £5,000 goes to the installer, who must pass the full value through as a discount on your invoice. Installers are prohibited from requesting or accepting separate payment for the grant amount.
Biomass Grants in Scotland
Scotland does not use the Boiler Upgrade Scheme. Funding runs instead through the Home Energy Scotland Grant and Loan scheme, which is more generous: up to £7,500 for a biomass boiler, with an additional £7,500 available as an optional interest-free loan. Households in remote rural and island areas can claim a further £1,500 uplift on top of the base grant.
The eligibility rules are not the same as the BUS, so qualifying under one scheme does not mean you qualify under the other. Scottish residents can contact Home Energy Scotland directly for an assessment.
The Boiler Upgrade Scheme applies only in England and Wales. Northern Ireland has separate arrangements not covered here.
What US Homeowners Can Claim in 2026
There is currently no federal residential grant or tax credit for biomass heating in the United States. The Energy Efficient Home Improvement Credit under Section 25C of the tax code, which had offered a 30 percent credit up to $2,000 per year for qualifying biomass stoves and boilers with a thermal efficiency of at least 75 percent, expired on 31 December 2025.
The USDA’s Rural Energy for America Program (REAP) does fund biomass installations, but it is not for individual homeowners. REAP covers up to 50 percent of eligible project costs, with grants from $2,500 to $1 million, and is restricted to agricultural producers and rural small businesses in areas with a population of 50,000 or less. To qualify as a farm, at least half of gross income has to come from agriculture. Someone heating their own house cannot use REAP.
What You Will Still Pay Out of Pocket
The £5,000 grant is a discount, not the whole bill. Installed costs for a residential biomass boiler in the UK typically run from around £4,000 for a basic pellet stove system up to £20,000 or more for a fully automated boiler with a bulk fuel store and integrated hot water cylinder. Most mid-range installations for an average home come in between £10,000 and £15,000, so the grant offsets roughly a third to half of the total.
Fuel and maintenance are ongoing costs on top of that. Wood pellets need dry storage, automated feed systems need periodic servicing, and the day-to-day involvement is greater than with a gas boiler. The offset comes from fuel bills: for properties currently running on oil or LPG, which is the audience the eligibility rules are aimed at, running costs typically fall.