Multi-Academy Trusts (MATs): Solar panels for schools

Why a Multi-Academy Trust is a programme, not a project

A Multi-Academy Trust changes the whole shape of a solar decision. You are no longer costing one roof — you are scoping an estate, typically 3 to 30 schools, and the right approach treats the whole portfolio as a single decarbonisation programme rather than a string of unconnected quotes. At trust scale the numbers get large: an estate-wide programme runs 200 kW to 1.5 MW of installed capacity across multiple sites, with a portfolio-wide project value of £250,000 to £1.5m and a blended payback around six years — faster than any single school, because scale drives the cost per kW down and lets you cherry-pick the strongest roofs first.

The economies are real. A trust that procures once, mobilises one crew across a cluster of nearby schools, and negotiates hardware at portfolio volume pays materially less per kW than each of its schools would pay alone. Sub-100 kW installs typically cost £900 to £1,200 per kW; procured as part of a multi-megawatt trust programme, the blended rate falls towards £750 to £900. Just as importantly, the trust-level capital allocation is simpler than fighting for capital school by school: the board makes one investment decision and the estates team delivers against it.

One feasibility study scopes the whole estate

The single biggest efficiency at trust level is that one feasibility study can scope the entire estate. We work with the trust estates or operations team to pull half-hourly meter data across every site, assess roof condition, orientation and structural capacity building by building, and produce a ranked portfolio: which schools deliver the strongest economics, which need a roof refurbishment first, which are constrained by a single-phase supply, and which order to deliver them in across successive holiday windows. That ranked programme becomes the portfolio business case the CFO and trustees actually need — one document, one set of assumptions, one auditable savings model, rather than a drawer full of inconsistent contractor quotes. Each school in the estate is different — a 1960s primary with a single-phase supply, a rebuilt secondary with a big flat roof, a special school with a year-round baseload — and a single co-ordinated study captures all of that in one ranked plan.

The single-application funding advantage

Funding is where the trust model is most powerful. Rather than each school applying separately, a single Salix or PSDS application can fund a whole programme. The Salix Decarbonisation Loan — interest-free, repaid from savings — can cover a multi-site rollout under one agreement, and the Public Sector Decarbonisation Scheme, which funds up to 100 per cent of eligible measures, is designed for exactly this kind of estate-wide public-sector programme, scoring strongest when solar is paired with heat decarbonisation. Individual academies within the trust can also draw on the Condition Improvement Fund where a roof refurbishment sits alongside the PV. We write one auditable savings calculation spanning the estate, so the trust submits a single, coherent application instead of coordinating a dozen. For trusts that would rather preserve capital, a portfolio-wide solar power purchase agreement — a no-upfront-cost model across multiple sites — is also on the table. The full route-by-route detail is on our grants and funding page.

ESFA governance — the compliance layer unique to trusts

Trusts carry a governance layer that no single maintained school has, and getting it right is part of the specialist's job. The ESFA Academy Trust Handbook governs how a trust spends capital, and projects above the £100,000 threshold typically require ESFA notification. An estate-wide solar programme will almost always cross that line, so we structure the business case and delivery plan to sit cleanly within Handbook requirements, and we make sure the paperwork supports the whole-trust risk register update that a capital programme of this size triggers. Trusts also watch their financial ratios closely, and a portfolio approach lets the programme be presented sensibly against the metrics trustees monitor. The usual safeguarding standards still apply at every site — DBS-cleared crews to Enhanced level with the Children's Barred List, KCSIE 2025 compliance, SBM induction and holiday scheduling — and several trusts have written our induction protocol into their own estates standards, so the same safeguarding regime applies consistently across every school we touch.

Central monitoring across the estate

A trust wants one view of its whole estate, not a dozen separate dashboards. We set up central monitoring that reports generation, self-consumption, savings and CO2 avoided across every site into a single portal — the reporting the estates director takes to the board and the evidence the trust needs against the DfE Sustainability and Climate Change Strategy milestones at 2030 and 2035 on the way to a net-zero estate by 2050. Portfolio-level data also lets the trust benchmark schools against each other, spot an underperforming inverter across the estate quickly, and build a credible, auditable net-zero narrative for its annual report and DfE returns.

A worked example

Consider a four-school trust whose flagship secondary faced costs rising from around £85,000 to £170,000 in two years. Rather than treat that school in isolation, the trust commissioned a single feasibility study across all four sites. The flagship's 950 square metre main block took a 118 kW array generating around 108,000 kWh a year, saving roughly £26,000 for a 6.2-year payback, funded 100 per cent through Salix and cash-flow positive from year one. Crucially, the same study had already scoped the remaining three schools — so when the first result landed, phase two across the rest of the estate was approved at the next trustees' meeting against a business case that was already written. That is the pattern the trust model is built to produce: prove it once on a flagship, roll it out with the paperwork already done, and report the whole thing through one monitoring portal.

Can you roll this out across all our schools at once?

Yes, and the economics are stronger at trust scale. We develop a single portfolio business case, one Salix or PSDS application covering all sites, and a phased delivery plan aligned to each school's holiday windows. Central monitoring gives the estates team one view across every site. Most trusts start with a flagship, prove the model, then roll out against a business case that is already approved.

How does the ESFA £100k threshold affect us?

An estate-wide programme will normally exceed the ESFA Academy Trust Handbook notification threshold of £100,000, so we build the business case and delivery plan to sit cleanly within Handbook requirements and support your notification and risk-register update. We are used to working alongside trust finance teams on this — it is a documentation exercise, not an obstacle.

Will every school get the same safeguarding standard?

Yes — that consistency is a core reason trusts use a single specialist. Every site gets the same DBS-cleared, KCSIE-2025-compliant crews, the same SBM induction, and the same holiday scheduling. Several trusts have adopted our induction protocol as their estates standard so the regime is identical at every school, rather than varying with whichever local contractor each school might otherwise use.

A board-level net-zero strategy the trust can actually stand behind

Trust boards are increasingly asked a direct question by members, parents and the DfE alike: what is the trust doing about net zero? A scatter of individual school projects gives a weak answer; an estate-wide solar programme gives a strong one. Because the programme is scoped, funded and reported as a single portfolio, the trust can point to a concrete installed-capacity figure across all its schools, a measured tonnage of CO2 avoided each year, and a clear trajectory against the DfE Sustainability and Climate Change Strategy milestones at 2030 and 2035. That turns net zero from an aspiration in a policy document into an auditable line in the trust's annual report and its DfE returns. For a chief executive or estates director, being able to show trustees a live, portfolio-wide dashboard of generation and savings is worth as much politically as the money it saves — it is evidence of estate stewardship, which is precisely what a trust board exists to assure.

Procurement, value for money and the trust's own duties

A trust does not just want a good price — it has to demonstrate value for money and regularity to the ESFA and its own auditors, and a coordinated solar programme makes that far easier to evidence than a scatter of ad-hoc quotes. A single competitively-tendered programme gives the trust one clear audit trail, one set of comparable unit rates across every site, and one supplier to hold to account, which is exactly the kind of documented, defensible procurement the Academy Trust Handbook expects for capital of this size. It also lets the trust standardise the hardware — the same panels, inverters and monitoring platform across the estate — so spares, maintenance and staff familiarity are consistent rather than fragmented across a dozen incompatible systems. Where a trust operates under a procurement framework, we work within it; where it tenders directly, we provide the comparable, itemised pricing the finance team needs to show best value to trustees.

Phased delivery logistics across many sites

Delivering 200 kW to 1.5 MW across several schools is a logistics exercise as much as an engineering one, and the school calendar is the master constraint. Each site's disruptive works must land in a holiday window, each secondary's exam season must stay clear, and a single crew can only be in one place at a time — so the ranked feasibility study doubles as a delivery sequence, mapping which schools go in which vacation across one, two or three years. Grid connections are run in parallel from the start, because on constrained parts of the network a G99 application is the longest single item and cannot wait until the crew is free. Central procurement of hardware means a supply issue is managed once for the whole programme rather than repeatedly. The trust sees the whole sequence up front — which school, which holiday, which funding tranche — so the estates director can report a credible multi-year rollout to the board rather than an open-ended intention.

Do our schools have to be geographically close for this to work?

No, though clusters help with crew mobilisation and cost. A dispersed trust still benefits from single procurement, a single funding application, standardised hardware and one monitoring portal; we simply build travel and sequencing into the phased plan. Many trusts whose schools span several local-authority areas run a single co-ordinated programme precisely to get consistent quality and reporting rather than a different local contractor in every town.

See how a single flagship building performs on our secondary schools page, review the estate-wide funding routes on our grants and funding page, or book a trust-wide feasibility study through our quote page. The full cost picture is in our cost guide.