Which grants apply in Wales — and free quotes from vetted local installers.
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In Wales you can access the Boiler Upgrade Scheme (£7,500), 0% VAT, the Smart Export Guarantee, ECO4, and the Welsh Government's Nest scheme for eligible lower-income households.
Solar panels, heat pumps, batteries and insulation are charged at 0% VAT across the UK until 31 March 2027 — an automatic saving for everyone, applied by your installer.
Typically: 0% VAT (saves ~£1,300 on 4kW solar) · Who: Everyone · full guide · official
Funded by energy suppliers, ECO4 helps lower-income households (on qualifying benefits, with an EPC of D or below) with free or subsidised insulation and heating upgrades. Ends 31 December 2026, with the Warm Homes Plan taking over.
Typically: Free/subsidised insulation & heating · Who: Low-income / on qualifying benefits + poorer EPC · full guide · official
The Welsh Government's Nest scheme offers free energy-efficiency improvements (insulation, heating, sometimes solar) to eligible lower-income households in Wales.
Typically: Free energy-efficiency improvements · Who: Eligible low-income Welsh households · full guide · official
Free, no obligation. We match you with vetted MCS-certified local installers.
Possibly. Low-income households on qualifying benefits with a poorer EPC may get free or heavily subsidised insulation through ECO4, the Warm Homes: Local Grant (England), Nest (Wales), or Home Energy Scotland. Eligibility is income- and property-based — check the guide for your nation.
Loft insulation can be a few hundred pounds; cavity wall £500–£1,500; solid-wall insulation £8,000–£15,000. Grants can cover much or all of it for eligible homes.
A well-insulated home needs a smaller, cheaper heat pump and runs it more efficiently. Many grant routes expect insulation first.