Solar panel grants in the UK, sorted by route

Here is the direct answer to solar panel grants in the UK: there is no blanket scheme that pays for a typical household's panels outright. What exists is a small, means-tested grant for the lowest-income homes through ECO4, a wider means-tested option through the Warm Homes: Local Grant, and for everyone else the Warm Homes Loan, which cuts the cost of borrowing rather than removing it. Layer 0% VAT and Smart Export Guarantee income on top and the real cost of solar drops a long way. It just does not drop to zero for most people.

That gap between the marketing and the mechanics is where most searches go wrong. Sort the five routes by who they are actually for, and the picture gets much simpler.

Why "free solar panels" rarely means what it says

The phrase has a history. The Feed-in Tariff paid households for every unit of solar electricity generated, whether used or exported, and it closed to new applicants on 1 April 2019. Its replacement, the Smart Export Guarantee, only pays for what you send back to the grid, and it is income, not funding towards the panels themselves. Older blog posts and forum threads still describe the Feed-in Tariff as if it were live. It is not, and no scheme has replaced it as a flat subsidy for installing panels.

Search results built for volume tend to repeat "free solar" language because it ranks well, then bury the eligibility rules three screens down. Most UK homeowners do not qualify for a fully-funded install. Knowing that early saves a wasted application.

Route 1: ECO4, for the narrowest slice of households

ECO4 is the route that genuinely can deliver solar at no cost, but it is narrow by design. Solar PV under ECO4 is typically bundled with insulation, for low-income households with an EPC of D to G. You need to be on a qualifying benefit such as Universal Credit or Pension Credit, and your home usually needs an energy efficiency upgrade alongside the panels, not solar in isolation.

The scheme also has a fixed shelf life. New applications close on 31 December 2026, after which there is no ECO5 or successor obligation scheme lined up to replace it. If you think you qualify, the practical move is to check now through your energy supplier or an ECO4-registered installer rather than wait, since a late application risks missing the cutoff entirely.

Route 2: the Warm Homes: Local Grant

This is the other means-tested door, and it is run by local authorities rather than energy suppliers. Solar PV panels sit on the list of measures it can fund, alongside insulation and clean heat systems such as air source heat pumps, up to a combined £30,000 per property.

Here is the catch worth knowing before you apply. A retrofit assessment at your home decides which measures actually go in, based on what will cut your energy use most. Solar is on the eligible list; it is not guaranteed for every applicant. Read the full detail on our Warm Homes: Local Grant page before assuming solar is the outcome.

Route 3: the Warm Homes Loan, for most other households

If neither of those means tests fits, the Warm Homes Loan is the route built for you, and it is the one behind most of the "grant" searches once people understand the other two do not apply. It is not free money. You borrow from an FCA-approved lender, and the government pays that lender a grant of up to 20% of the loan, which reduces the balance and drops your rate by up to around 5 percentage points. Solar is capped at £15,000, repayable over 3 to 10 year terms.

Public loans are expected from September 2026. Line up a quote now so you are ready the day lenders open, and see the full mechanism in our guide to how the warm homes loan scheme works.

The 0% VAT that already applies, no form needed

Whichever route you use, one relief is already baked into your quote. Installers charge 0% VAT until 31 March 2027 on solar panels fitted to a UK home, applied at the point of purchase rather than claimed back afterwards. You do not need to be on a benefit, register anywhere, or ask for it. Check your quote shows it correctly, because the discount only exists if the installer has applied it.

After that date the rate rises to 5%, still well below the standard rate, but the saving is largest for installs completed before the cutoff.

What you earn back once panels are fitted

The Smart Export Guarantee is not a grant. It is a running payment from a licensed electricity supplier for every unit of solar power you export rather than use in the house. Rates vary a lot by tariff and by condition. An unconditional tariff open to any exporter pays around 6p a unit, while the best deals, usually tied to a specific supplier and a battery, reach 25p a unit.

A battery does not open up any grant here, but it changes which tariffs you can access. Use less of your own generation on export and more on your own consumption, and the maths often improves faster than the export rate alone suggests. Our home battery storage guide works through the sizing and cost side of that decision.

Put the routes together before you apply anywhere

Households sometimes assume the routes stack automatically. They do not, and applying to the wrong one first wastes time. Check ECO4 and the Local Grant if your income and EPC rating put you in scope, since both can be worth thousands with no repayment. If neither applies, the Warm Homes Loan plus VAT relief plus Smart Export Guarantee income is the realistic combination for most homeowners, and it beats paying the full personal loan rate most lenders quote for unsecured home improvement borrowing. Our home energy grants map sets solar alongside every other funded measure if you are weighing more than one job at once.

Common questions

One number to take away: £15,000. That is the Warm Homes Loan solar cap most households will actually use, and it is the figure worth checking against a real installer quote before you assume ECO4 or the Local Grant will step in instead.