Solar Panels for Schools: Costs, Funding & Installation (2026)
A practical guide for school leaders, business managers and academy trusts — what a school solar system costs, the five ways to fund it, how long it takes, and the savings a well-sized array can realistically deliver.
Why schools are ideal for solar
Schools consume most of their electricity during the day — exactly when solar panels generate. Classrooms, kitchens, IT suites and lighting run on-site generation rather than imported grid power, which is what makes the economics work better for schools than for almost any other public building.
Roofs are usually large, unshaded and unobstructed, and energy is a significant, controllable line in the school budget. Every pound not spent on electricity is a pound available for teaching.
Solar also does measurable work for the school's climate action plan: it is visible to pupils, quantifiable in carbon reporting, and increasingly expected by trusts, parents and inspectors. Multi-site trusts and colleges get additional portfolio benefits — see our guides for academy trusts and colleges.
Source: Department for Education / Great British Energy, July 2026 announcement. Savings depend on roof area, consumption and tariffs — a site-specific feasibility study, not a national average, is the right basis for budgeting.
What do solar panels cost for a school?
Rooftop systems for UK schools typically fall between £15,000 and £100,000 or more, driven by usable roof area, system size, roof type and electrical work.
| School type | Typical system size | Indicative installed cost* |
|---|---|---|
| Primary school | 20–30 kW | £20,000 – £40,000 |
| Secondary school | 50–100 kW | £40,000 – £90,000 |
| Large campus / academy trust site | 100–250 kW+ | £90,000 – £200,000+ |
*Indicative pre-survey ranges for guidance only — actual costs depend on roof condition and access, structural surveys, electrical capacity, DNO connection requirements and installation timing. Larger multi-site trust programmes spread fixed costs across more roofs and can improve the per-kW rate. UEC models each site individually before any commitment.
Two cost drivers are easy to underestimate. First, roof readiness: panels last 20–25 years, so a roof near the end of its life should be refurbished first — sequencing matters more than panel price. Second, grid connection: export limits and DNO applications affect both design and timeline and should be checked at feasibility stage, not after.
Five ways schools pay for solar
From outright grants to zero-capital contracts — each route fits a different budget situation.
Great British Energy grant
Government-funded rooftop solar for state schools and colleges in England — 245 schools already fitted, with 100 more being funded in the current up-to-£40m wave. Panels are owned by the school and savings stay in the budget. Waves are periodic; readiness matters. See our GBE solar schools guide.
Salix funding
Salix-administered public-sector funding (PSDS) can cover energy-efficiency measures, and in some routes solar, on condition-based criteria — £1bn+ delivered to date. Where eligible, it can bring the school's contribution close to zero. See our Salix funding guide.
Condition Improvement Fund (CIF)
Academies, sixth-form colleges and voluntary-aided schools can bid for CIF for building condition works — relevant where roof refurbishment and solar can be combined into one project and one disruption window.
Capital purchase / borrowing
Outright purchase delivers the fastest full return and simplest ownership, but requires capital (or borrowing) and carries the maintenance and inverter-replacement costs over the system life. Best suited to schools with reserves and a roof in good condition.
Solar PPA — zero capital cost
A funding partner installs, owns, insures and maintains the system at zero capital cost; the school buys the on-site electricity at a single price per kWh, fixed for 15 years and not linked to inflation, with full O&M included and an asset transfer option at year 15. This is the model the government is piloting with 150 schools — and it is available independently now via UEC Energy and the RECfA programme. Full detail in our solar PPA for schools guide and the schools capability statement.
Rule of thumb: if a grant window is open and the school is eligible, take the grant. If not, the PPA route delivers the same physical outcome without touching the capital budget — the trade-off is sharing part of the generation value with the funder for the contract term.
Schools generate most when they need it least
Weekends, half-terms and the six-week summer holiday coincide with peak solar output — so a well-sized school array can export a significant share of its annual generation. Today that surplus is typically sold back to a supplier at standard export rates of around 5p per kWh.
That is changing. BSC Modification P441 will let local supply schemes settle electricity between a generator and a nearby user, and the SENfA platform matches a school's surplus with local off-takers — other schools in the trust, council buildings, leisure centres — at illustrative rates of 12–18p per kWh. For a school exporting 20,000 kWh a year, that is the difference between roughly £1,000 and £3,000 of annual income.
Read the Schools Capability Statement (P441 & SENfA)From feasibility to first kWh
The roof work takes weeks; the surrounding process is what needs planning. Most schools install in holidays to avoid disruption to teaching.
Feasibility (2–4 weeks)
Half-hourly consumption review, roof and structure check, shading and orientation assessment, indicative yield and savings model, and a funding-route comparison. This is the stage that determines everything downstream.
Funding & approvals (4–12 weeks)
Grant application or PPA contracting, governor/trust approvals, and planning confirmation where required (most rooftop installs are permitted development).
DNO & design (parallel)
Grid connection application, export-limit assessment, detailed system design and procurement of the installation team.
Install & commission (1–3 weeks on site)
Scaffold, mounting, panels and inverters, electrical connection, commissioning and handover — scheduled for holidays or term breaks, with safeguarding-compliant contractors.
Durations are typical, not guaranteed — roof condition, DNO queues and funding rounds dominate the critical path. Schools that prepare their evidence pack (consumption data, roof reports, capacity information) move fastest.
What schools are actually saving
The best current evidence comes from the Great British Energy programme itself. One school in the first wave reported a 35% reduction in electricity use with projected savings of around £3,000 a year from solar alone; LIFT Feversham School in Yorkshire reported around £23,000 saved in its first year from solar combined with other efficiency measures.
At programme level, the first wave of around 250 schools and colleges is expected to save £220 million combined over the panels' lifetime, with secondary schools adding LED lighting saving an estimated £58,600 a year and primaries £21,000.
Payback for a capital purchase typically falls in the 4–8 year range depending on system size, self-consumption and tariffs — but a school does not need to fund payback at all under a PPA, where the saving is immediate (a cheaper tariff than grid) and the risk sits with the funder.
Illustrative: 50 kW secondary-school system
Illustration for orientation only — actual yield depends on roof orientation, shading, tariffs and consumption patterns. UEC models each site individually; figures should not be treated as an offer.
School solar questions, answered
How much do solar panels cost for a school?
As an indicative guide, rooftop systems for UK schools typically fall between £15,000 and £100,000 or more depending on roof area and system size — roughly £20,000–£40,000 for a small primary system (20–30 kW), £40,000–£90,000 for a typical secondary (50–100 kW) and above £90,000 for large campuses. A site survey is the only reliable basis for a budget.
Can a school get solar panels for free?
Yes, in two ways: a Great British Energy grant (245 schools already fitted, 100 more being funded in the current £40m wave) or a power purchase agreement, where a funding partner installs, owns and maintains the system at zero capital cost and the school buys the electricity generated at a fixed price below its grid tariff.
Do schools need planning permission for solar panels?
Most rooftop solar on schools is permitted development and does not need a planning application. Listed buildings, conservation areas and some car-port or ground-mount installs may need consent — check with the local planning authority early if the site is heritage-constrained.
How long does a school solar installation take?
The physical installation on a typical school roof takes one to three weeks, but the full journey — feasibility, funding, grid application and scheduling — usually takes several months. Most schools schedule the roof work in holidays or term breaks.
What happens to the power generated during school holidays?
Weekends and the six-week summer holiday coincide with peak output, so a well-sized array can export a significant share of its generation. Surplus is currently sold at standard export rates (~5p/kWh); under P441 and the SENfA platform, schools will be able to sell locally at materially better rates (illustratively 12–18p/kWh).
Should our school buy the panels or use a PPA?
Buying outright gives the fastest full return but needs capital and a sound roof. A 15-year fixed-price PPA needs no capital, includes full operation and maintenance, gives immediate savings and typically includes an asset transfer option at the end. A feasibility study should model both before deciding.
Book a free feasibility study for your school
UEC Energy assesses your roofs, consumption and funding eligibility — grant, Salix or zero-capex PPA — and models the whole-site opportunity: solar, battery storage, EV charging and future P441/SENfA income. No obligation.