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 is rarer than the adverts suggest: ECO4 runs until 31 December 2026 but pays for solar only where a whole-house assessment supports it. Beyond that there is one narrow free route, and a broad set of discounts that still change the arithmetic decisively.

The other 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 is still open and what ended — so you can ignore the adverts

ECO4 still funds solar in Welsh whole-house retrofits where the assessment calls for it, particularly in electrically heated and off-gas homes. Its original end date was 31 March 2026, but it has been extended to 31 December 2026 — the full story is in our extension 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. Panels also change the arithmetic of a Welsh heat pump more than anything else you can buy, because a pump roughly doubles daytime demand and daytime is when a roof generates.

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.

Are there solar grants available in Wales for 2026?

One, and it is not a solar grant: Nest, the Welsh Government's Warm Homes programme, whose funded packages "may include boiler repairs, heat pumps, insulation and solar panels" depending on what the assessment finds. You cannot apply to it for panels. You apply to the scheme, and the surveyor decides. Everything else marketed as a Welsh solar grant in 2026 is one of three things: the 0% VAT relief (automatic, not a grant), the Smart Export Guarantee (income, not a grant), or a commercial roof-lease offer. There is no county-level solar grant in Wales — not in Cardiff, Swansea, Wrexham or anywhere else — and a page promising one for your town is selling something.

Source: Welsh Government, Nest Warm Homes Programme.

Can you get a grant for free solar panels?

Only through Nest, and only as part of a wider package. The distinction matters because the adverts blur it deliberately. Nest has funded free measures for over 60,000 Welsh households since 2011; where a home is electrically heated or off the gas grid and the fabric work is already done or unnecessary, solar can be part of what it installs. What Nest will not do is fit panels on a gas-heated, reasonably insulated home because the owner would like them. The scheme exists to cut fuel poverty, and the measure list follows from that, not from the applicant's preference.

How do you qualify for free solar panels?

Through Nest's eligibility test, which has three parts and all three must hold:

Test	What has to be true
Tenure	You own your home or rent it privately. Local authority and housing association tenants are not eligible — their landlord has separate routes.
Money	You receive a means-tested benefit, or your household income falls within the scheme's low-income thresholds for your household size.
The building	An EPC rating of 54 (E) or worse — or 68 (D) or worse if someone in the household has an eligible health condition. The condition list covers respiratory disease, circulatory disease, mental health conditions, dementia, and intellectual or developmental disorders.

That second EPC band is the part most people miss, and it is a wide door: a D-rated home is an ordinary home. If anyone in the household has one of those conditions, check before assuming you are out. Criteria: Welsh Government, Nest eligibility. Free advice is available to every Welsh household regardless of the test, on 0808 808 2244.

How much does it cost to install solar panels in Wales?

A typical domestic 4 kWp system installs at £5,000–£8,000 in Wales, and because supply-and-install work is zero-rated until 31 March 2027, that figure should already contain no VAT — a quote showing 20% VAT on the panels is wrong, not expensive. At Welsh yields of 850–950 kWh per installed kWp, a 4 kWp array generates roughly 3,400–3,800 kWh a year. What that is worth depends far more on when you use it than on where you live: electricity you use yourself avoids the full import price, while electricity you export earns the Smart Export Guarantee rate, which is a fraction of it. Self-consumption is worth roughly double export, which is why a heat pump, an EV or simply running the washing machine at noon changes the arithmetic more than another kilowatt-peak of panels does.

Figures are indicative and confirmed at survey. If you want the version for your own roof, county and heating, the check below returns it by email.

Why are people getting rid of their solar panels?

This question is doing the rounds and the honest answer is: mostly they are not. What does happen, and what feeds the story, is three specific situations. Roof work — a re-tile or a leak repair forces removal and refitting, which is why panels should go on a roof with fifteen years left in it. Old Feed-in Tariff systems changing hands, where the incoming owner does not understand the payments and treats the array as clutter. And undersized or badly sited installs from the 2010s boom, on north-facing or heavily shaded roofs, which never performed and were never going to. None of those is an argument against solar in 2026; they are arguments for a survey that is willing to tell you no.