Can You Really Get Free Solar Panels for a School?

“Free solar panels for schools” — the honest answer

Search “free solar panels for schools” and you will find a mix of overblown promises and cagey non-answers. So here is the honest version up front: there is no scheme that simply gifts a school a rooftop full of panels with nothing expected in return. But that is not the useful question. The useful question is: can a school get solar onto its roof without finding a large lump of capital first? And the answer to that is a firm yes — through several well-established routes, at least one of which usually leaves the school better off from year one.

There are effectively three ways a UK school gets solar at little or no upfront cost: interest-free finance repaid from savings, capital grants that cover most or all of the bill, and a power purchase agreement where a third party owns the panels. Let’s take them in turn, because which one fits depends on whether your school is maintained, an academy, or independent.

Route one: Salix — as close to “free” as it gets

The Salix Decarbonisation Loan is the reason “free solar panels for schools” is not a myth for most state schools. It is interest-free, and — crucially — it is repaid from the energy savings the panels generate, not from your teaching budget. Because there is no interest and the repayments come out of money you would otherwise have handed to your electricity supplier, a well-sized system is typically cash-flow positive from day one: the annual bill saving is larger than the annual repayment, so the school’s finances are better off immediately.

That is why an SBM can honestly tell governors the project is “effectively free”. You are not spending capital you don’t have. You are diverting money that was already leaving the building as electricity charges into paying off an interest-free loan, then keeping all of the savings once the loan clears. Key points:

• No interest and no hidden fees — it is a genuine decarbonisation loan, not a commercial product.
• Repaid over up to around eight years from auditable energy savings.
• Available to maintained schools, academies and FE/sixth-form colleges.
• Once the loan is repaid, 100% of the savings flow back into the school budget for the panels’ remaining 15–20+ years of life.

The one thing Salix insists on is a defensible energy-savings calculation. We build that from your half-hourly meter data so the figure you submit stands up to scrutiny.

It helps to picture the cash flow, because “cash-flow positive” is the phrase that reassures governors most and is the one most often glossed over. Suppose a system saves a school £11,000 a year on its electricity bill, and the interest-free Salix repayment is £9,000 a year over the loan term. From year one, the school is £2,000 a year better off — the saving covers the repayment with room to spare, so no money comes out of the teaching budget at any point. Once the loan clears after seven or eight years, the full £11,000 a year (and rising, as electricity prices climb) flows straight back into the school. Those figures are illustrative, but the shape is the point: a well-sized Salix project puts a school in credit from the very first year and leaves it substantially better off for the panels’ remaining 15-plus years of life.

Route two: grants that pay 50–100% of the bill

If you want something closer to a literal grant — money you never repay — two routes exist, both competitive:

• Public Sector Decarbonisation Scheme (PSDS) Phase 4 — a capital grant of up to 100% of eligible measures, open to all public-sector buildings including schools. It is competitive, and it strongly favours bids that combine solar with heat decarbonisation (heat pumps, fabric upgrades). Win it, and there is genuinely nothing to repay.
• Condition Improvement Fund (CIF) — for academies, sixth-form colleges and voluntary aided schools. The CIF can fund a large share of a project, and it scores best when solar is paired with roof refurbishment your building needs anyway.

These grants are harder to secure than Salix because you are bidding against other schools. But for the right project — a larger scheme, or one bundled with heating or roofing work — they can cover most or all of the capital. Our full grants and funding page and our Salix vs PSDS vs CIF decision guide explain how to choose between them.

Route three: the solar PPA — genuinely no upfront capital

There is a fourth route that comes closest to the “free panels” idea, and it is the one competitors rarely explain: the solar power purchase agreement (PPA).

Under a PPA, a third-party investor owns and pays for the panels, and the school buys the electricity they generate at an agreed, usually below-grid rate over a long-term contract (often 15–25 years). The school puts in no capital at all — the panels appear on the roof, and the school simply pays a lower unit rate for the solar electricity it uses. At the end of the term, ownership can transfer to the school. Providers such as solar power purchase agreement specialists structure these arrangements for schools and academy trusts specifically because the no-upfront model suits capital-constrained estates.

A PPA is not always the best value over the full life of the system — you are, in effect, paying the investor for the capital you didn’t provide. But if your school genuinely cannot access capital or an interest-free loan, or wants the panels entirely off its balance sheet, a PPA can be the difference between having solar and not. It is especially worth weighing for multi-academy trusts rolling out across many sites, and for independent schools that can’t access Salix. We model a PPA side by side with the funded-purchase routes so you can see the true lifetime difference before deciding.

Which “free” route fits which school?

• Maintained school, wants the best long-term value → Salix. Effectively free, cash-flow positive, and you keep every penny of savings after the loan clears.
• Academy or VA school with an ageing roof → CIF, ideally paired with roof refurbishment.
• Larger public-sector project, especially with heating work → PSDS combined bid.
• Any school that can’t or won’t provide capital, or wants panels off-balance-sheet → a solar PPA.
• Independent school → PPA or reserves — the public schemes don’t apply.

What “free” doesn’t mean

Two honest caveats so no governor is surprised later. First, a Salix loan is still a loan — cash-flow positive, but a repayment obligation on the books until it clears. Second, a PPA means you don’t own the electricity outright; you buy it at the contracted rate, and over a full lifetime that can cost more than owning the system. Neither of these makes “free solar” a con — they just mean “free” describes the upfront position, not the whole-life ledger. A good installer will show you both numbers.

The bottom line

Can you really get free solar panels for a school? At the point of installation, yes — through Salix’s interest-free, savings-repaid loan, through PSDS or CIF grants, or through a no-capital PPA. The right route depends on your legal status, your roof, and whether you value long-term ownership or zero upfront outlay. For a school of your type, see our pages for primary schools and multi-academy trusts, and check our FAQs for the questions governors always raise.

Rather than guess which route leaves your school best off, let us run the numbers. Request a free feasibility and we will model Salix, grants and a PPA side by side against your own meter data, and tell you plainly which one gets panels on your roof for the least real cost.