Solar panel funding in Wales: what's true in 2026

If you previously looked up solar panel grants for your Welsh town or county, this page replaces those searches with one straight answer. Fully funded solar mostly ended with ECO4 in March 2026. What remains is one narrow free route, and a broad set of discounts that still change the arithmetic decisively.

The one remaining free route: Nest, sometimes

The Welsh Government's Nest scheme designs funded packages from a whole-home assessment, and where solar PV is the right technical answer for an eligible lower-income household, it can be included. The honest emphasis is on can: insulation and heating improvements come first in almost every package, and you cannot apply "for solar panels" — you apply for the scheme, and the assessment decides the measures. If your household is on a low income, receives means-tested benefits, or includes someone with a qualifying health condition, start there before reading further.

What ended, so you can ignore adverts for it

ECO4 funded solar in many Welsh whole-house retrofits, particularly electrically heated and off-gas homes. It closed to applications on 31 March 2026 — the full story is in our closure guide. The Feed-in Tariff, whose generous payments once made "free solar" roof-lease schemes viable, closed to new entrants back in 2019. Any Welsh advert promising free panels in 2026 that doesn't say "Nest" is selling something else: finance, a roof lease, or your phone number.

The discounts every Welsh household can use

0% VAT until 31 March 2027. Supply-and-install solar (and battery) work on homes is zero-rated UK-wide. On a typical 4 kWp installation at £5,000–£8,000, that is £1,000–£1,500 the quote simply never includes. No application; just check the quote doesn't wrongly show VAT.

Smart Export Guarantee. Licensed suppliers must pay for the solar electricity you export, and rates vary from token to genuinely worthwhile — shopping the tariff is worth £100–£300 a year on a typical Welsh system. You will need MCS paperwork from your installer and a smart meter.

Welsh yields, for the sceptics. Welsh roofs produce around 850–950 kWh per installed kWp per year depending on county and orientation — modestly behind Cornwall, comfortably ahead of the pessimism. Pembrokeshire and coastal Glamorgan sit at the top of that range. Rain keeps panels clean; it does not stop them working.

Pair with a heat pump and the maths improves again. A heat pump roughly doubles household electricity demand, converting export-priced generation into import-priced savings. With the £7,500 Boiler Upgrade Scheme live across Wales, the pump-plus-panels package is the strongest whole-home play of 2026 — especially for the oil-heated rural homes this site keeps returning to.

Buying well in Wales

Use MCS-certified installers only — verify at mcscertified.com, since certification gates both the Smart Export Guarantee and any future grant claims. Get three quotes; rural counties have fewer local firms, so expect and query travel-inflated pricing. Confirm the quote covers scaffolding, bird-proofing if you want it, and DNO notification. And for listed buildings or homes in the national parks, ask the planning question explicitly — most domestic solar is permitted development in Wales, but the exceptions cluster exactly where rural Wales is prettiest.