Solar Panels for Schools and Colleges: Costs & Savings

From classroom lighting and computer suites to kitchens, workshops and sports facilities, education buildings can have substantial daytime electricity demand.

Many also have something solar panels rather like - a large, otherwise unproductive roof.

A well-designed solar PV system can bring those two things together, helping a school or college reduce grid electricity use, lower its carbon emissions and make energy costs more predictable.

But this is not simply a case of covering every available roof with panels and hoping for the best.

The strongest projects are designed around the building’s actual electricity use, roof condition, operating hours, grid connection and long-term estates plan.

In this guide, we explain how solar panels for schools and colleges work, what they could cost, how much they may save and the funding routes available in 2026.

🔑 Key Takeaways:

• Schools and colleges can be excellent candidates for solar because much of their electricity is used during daylight hours.

• Indicative commercial solar costs range from around £16,000–£30,000 for 20kWp, £33,000–£60,000 for 50kWp and £70,000–£110,000+ for systems of 100kWp or more.

• The financial case is usually strongest when most of the solar electricity is consumed on site rather than exported.

• Batteries can help where there is evening demand or surplus generation, but they are not automatically necessary for every school.

• Funding routes may include outright purchase, finance, grants and Power Purchase Agreements.

• A structural survey, electricity-data analysis and grid assessment should take place before a final system is proposed.

Are schools and colleges suitable for solar panels?

Often, yes.

Schools tend to be busiest between the morning and late afternoon, while colleges may operate into the evening. This creates a useful overlap between electricity demand and solar generation.

Suitable education sites commonly have:

• Large pitched or flat roofs

• Regular daytime electricity consumption

• Sports halls, kitchens, IT suites or workshops with higher electrical loads

• Several buildings sharing one site

• Staff or visitor car parks that could support solar canopies

• Long-term ownership or occupation of the premises

Solar will not necessarily power the entire site, particularly during winter or periods of high demand. It can, however, reduce how much electricity needs to be purchased from the grid.

The word to remember is self-consumption.

This means using solar electricity inside the school or college at the time it is generated.

Summer holidays complicate the picture slightly. Solar generation is at its highest when many schools are quieter, so holiday demand, export arrangements and battery storage should all be considered during system design.

Colleges, universities, leisure facilities and sites used throughout the year may naturally consume a greater proportion of their summer generation.

How do solar panels work in a school?

Solar photovoltaic panels convert daylight into direct-current electricity.

An inverter then converts that electricity into alternating current that can be used by the building.

The electricity can be:

• Used immediately on site

• Stored in a battery for later

• Exported to the grid

• A commercial school solar system will normally include:

• Solar PV panels

• One or more inverters

• Roof mounting equipment

• Cabling and isolators

• Electrical protection equipment

• Generation and export metering

• Online performance monitoring

• Grid connection equipment

• Optional battery storage

• Optional EV charger integration

Although the technology is familiar, commercial solar design is more involved than a typical domestic installation.

The installer must consider structural loading, fire safety, roof access, asbestos information, electrical capacity, safeguarding, grid requirements and how installation work will be separated from pupils and staff.

Benefits of solar panels for schools and colleges

[1] Lower electricity bills

Every unit of solar electricity used on site is one less unit that needs to be purchased from an electricity supplier.

That can release money for staffing, learning resources, building improvements and other priorities.

Solar will not make the electricity bill disappear entirely. The site will still require grid power at night, during darker winter periods and whenever demand exceeds generation.

But a properly sized system can make a meaningful dent in daytime grid consumption.

[2] More predictable energy costs

School budgets generally prefer pleasant surprises. Energy markets have not always been cooperative on that front.

Generating electricity on site reduces exposure to future price changes because part of the school’s demand is supplied by an asset with no fuel cost.

The exact saving will still depend on system performance, electricity prices and consumption patterns, but solar can improve long-term budget visibility.

[3] Lower carbon emissions

Solar PV generates electricity without producing operational carbon emissions.

It can therefore support an education setting’s decarbonisation plans and wider net-zero objectives.

Decarbonisation and net zero form one of the plan’s four central pillars. Read the DfE climate action plan guidance.

[4] A practical learning resource

A solar installation can be more than equipment sitting quietly on a roof.

Live monitoring data can be displayed inside the building and incorporated into subjects such as:

• Science

• Mathematics

• Geography

• Computing

• Design and technology

• Business studies

• Environmental science

Students can analyse generation data, compare seasonal performance and see how weather and electricity consumption affect the site in real time.

It turns renewable energy from an abstract topic into something happening directly above the classroom.

[5] Better use of existing space

Solar panels allow schools to generate electricity without sacrificing classrooms, sports pitches or playgrounds.

Roof-mounted systems are the obvious option, but suitable sites may also consider ground-mounted arrays or solar carports.

Solar carports can generate power while providing sheltered parking and supporting EV charging, although they are generally more expensive than a straightforward rooftop installation.

[6] Visible climate leadership

Solar provides an obvious sign that a school or college is acting on its environmental commitments.

That can help engage pupils, parents, staff, governors and the wider community, particularly when the installation forms part of a properly documented climate action plan.

How much do solar panels for schools cost?

There is no standard price for a school solar installation.

As a broad guide, indicative UK commercial solar costs are often:

Annual generation figures assume approximately 850–1,100kWh per installed kWp. Actual output depends on location, orientation, pitch, shading, equipment and system losses.

These figures should be treated as early budgeting ranges rather than quotations.

The final price can be affected by:

• System size and panel specification

• Roof type, height and accessibility

• Structural reinforcement

• Scaffolding or lifting equipment

• Electrical distribution upgrades

• Asbestos management requirements

• Planning or heritage constraints

• Fire-safety provisions

• Grid connection work

• Monitoring and metering

• Battery storage

• Groundworks or solar carport structures

• Out-of-hours or holiday working requirements

Larger systems often cost less per installed kWp, but complex roofs and electrical upgrades can quickly change the calculation.

How much could a school save with solar panels?

Savings depend on four main figures:

• How much electricity the system generates

• How much is used on site

• The price of imported electricity

• The payment received for exported electricity
  
  Here is a simplified example:
  
  Imagine a 50kWp school solar system that:

• Generates 45,000kWh per year

• Supplies 80% of that electricity directly to the school

• Avoids imported electricity costing 22p per kWh

• Exports the remaining electricity at 5p per kWh

The calculation would look like this:

• On-site saving: 36,000kWh × £0.22 = £7,920

• Export income: 9,000kWh × £0.05 = £450

• Indicative first-year benefit: £8,370

If the system cost £45,000, the simple payback would be approximately 5.4 years.

That is only an illustration. It excludes financing, maintenance, degradation, tariff changes and other project-specific costs.

Be cautious with any quotation that promises a precise saving before anyone has examined how the site uses electricity.

How many solar panels does a school need?

The answer should be based on demand, not simply how many panels will fit.

A 50kWp array might use approximately 100–120 modern commercial panels, depending on their individual wattage.

It may require roughly 230–300m² of usable roof area once spacing, access routes and obstructions are considered.

However, filling the roof is not always the best commercial decision.

An installer should assess:

• At least 12 months of electricity consumption

• Half-hourly data where available

• Weekday and weekend demand

• Term-time and holiday consumption

• Planned heat pumps or electrification

• Existing or planned EV chargers

• Roof orientation and shading

• Structural capacity

• Available grid connection capacity

• Export limitations

• Future building or roof works

• The aim is not the biggest possible system.

It is the system that delivers the strongest operational and financial result for the site.

Does a school need solar battery storage?

Not necessarily.

Schools already use electricity during the day, so they may be able to consume a large share of their solar generation immediately.

In that situation, adding a battery may increase the project cost without improving the return enough to justify it.

Battery storage becomes more interesting where:

• Large amounts of generation would otherwise be exported

• The site has substantial early-morning or evening demand

• Buildings are used outside normal school hours

• The network operator limits exports

• EV charging creates demand later in the day

• Electricity prices vary significantly by time

• The site wants additional energy-management capability

A battery should be sized using real load and generation data.

“The biggest one that fits” is not a storage strategy.

It is also important to distinguish ordinary solar battery storage from backup power.

Most standard grid-connected batteries will not automatically keep an entire school operating during a power cut.

Backup capability requires specific design, controls and electrical separation.

Can schools sell excess solar electricity?

Potentially, yes.

The Smart Export Guarantee allows eligible small-scale generators in Great Britain to receive payment for electricity exported to the grid.

Solar PV systems with a total installed capacity of up to 5MW can qualify, subject to the scheme’s requirements.

Export income can be useful, particularly during weekends and school holidays.

However, it should normally be treated as secondary to self-consumption. A unit of electricity used on site will often be worth more than the same unit exported.

Larger installations may have access to other export or power-purchase arrangements, depending on their capacity and metering setup.

Grants and funding for school solar panels

Funding changes frequently and differs across England, Scotland, Wales and Northern Ireland.

Schools should confirm current eligibility with their responsible body, local authority, trust and the relevant funding provider before building a business case around any particular scheme.

Common routes include the following.

Outright purchase

The school, college, trust or responsible body pays for the installation and owns the system.

This usually provides the greatest long-term benefit because the organisation keeps the electricity savings and any export income.

It also requires the highest upfront investment.

Commercial finance

A loan or asset-finance arrangement can spread the cost over several years.

This may allow the project to proceed without using the entire capital budget immediately, but interest and fees will affect overall payback.

Decision-makers should compare the expected annual energy benefit with repayments under realistic performance and tariff assumptions.

Power Purchase Agreements

Under a solar Power Purchase Agreement, a third party funds, owns and usually maintains the system.

The school then buys the electricity generated by the panels at an agreed rate, which is intended to be lower than the cost of grid electricity.

This can provide solar with little or no upfront capital expenditure, but the contract may run for 15–25 years.

Before signing, schools should examine:

• The starting electricity rate

• Inflation or index-linked price increases

• Minimum purchase requirements

• Maintenance responsibilities

• Roof repair arrangements

• Ownership at the end of the term

• Early termination costs

• Treatment of export income

• Building sale, lease or redevelopment provisions

Performance guarantees

A PPA can be useful, but “free solar panels” is an incomplete description. The school is accepting a long-term energy and property agreement.

Great British Energy and DfE programmes

In July 2026, the government reported that 245 schools and colleges had received government-funded solar panels, with another 100 joining the Great British Energy Solar Partnership.

It estimated combined lifetime energy-bill savings of approximately £220 million. Read the government announcement.

The pilot is not a general open grant application. Participating settings are selected by the DfE, which hopes to make the PPA route more widely available from the 2027–28 financial year. See the current DfE PPA guidance.

Schools outside these programmes should check:

• Their local authority

• Multi-academy trust funding

• Regional net-zero funds

• Community energy organisations

• Local business sponsorship

• Public-sector decarbonisation opportunities

• Current education-estate funding programmes

Do not assume an older grant mentioned online remains open.

Renewable funding pages have a habit of lingering around long after the money has packed its bags.

Do schools need planning permission for solar panels?

Many rooftop solar installations can be completed under permitted development rights, but this should never be assumed.

Planning permission or additional consultation may be required where:

• The building is listed

• The site is in a conservation area

• Panels would be visually prominent

• The installation is ground-mounted

• A solar carport is proposed

• Equipment exceeds permitted development limits

• The site is subject to specific planning restrictions

Building regulations and electrical safety requirements still apply even where planning permission is not needed.

Depending on the building’s ownership and funding arrangement, consent may also be needed from a local authority, academy trust, landlord, lender or the Department for Education.

For academy and maintained-school estates, land and property rules should be checked before agreeing to a lease or long-term PPA.

What should be checked before installation?

A proper feasibility assessment should cover more than an aerial image of the roof.

Roof condition

Solar panels may remain in place for 25 years or longer, so fitting them to a roof that needs replacing in five years rarely makes sense.

The roof should be surveyed for condition, remaining life, load capacity and signs of water ingress.

Where repair or replacement is already planned, coordinating the two projects can avoid paying to remove and reinstall the array later.

The DfE’s current PPA guidance specifically states that applications will not be approved where the relevant roof is in poor condition.

Structural suitability

A structural engineer may need to assess the additional dead load, wind loading and mounting arrangement.

Flat roofs can be suitable for solar, but ballast, membrane condition, drainage and access must be considered carefully.

Asbestos

Many education buildings contain asbestos-containing materials.

The installer must receive up-to-date asbestos information and plan work so that materials are not disturbed. Any uncertainty should be resolved before drilling, cabling or roof access begins.

Electrical capacity

The existing electrical system must be checked to establish where the solar system can connect and whether switchgear, protection or cabling requires upgrading.

Grid connection

The local Distribution Network Operator may need to approve the connection.

Export capacity can be limited in some locations. This does not always prevent a project, but it may require export-limitation equipment, battery storage or changes to system size.

Fire safety and access

The design should preserve safe access routes and consider roof compartmentation, emergency isolation, signage and the location of inverters and batteries.

Any proposal should align with the site’s fire strategy rather than treating fire safety as paperwork to complete afterwards.

What happens during installation?

A commercial school installation normally follows these stages:

• Initial consultation and electricity-data review

• Site, roof and electrical surveys

• Outline system design and financial modelling

• Structural and asbestos checks

• Planning and third-party approvals where required

• Grid connection application

• Final design and installation plan

• Scaffolding, roof preparation and installation

• Electrical connection and commissioning

• Handover, certification and monitoring setup

The timescale can range from several weeks to several months, depending on the system size, surveys, approvals and grid requirements.

Physical installation may be scheduled during school holidays or phased to minimise disruption.

Safeguarding, deliveries, contractor access, noise and separation from pupils should all be included in the project plan.

Maintenance and monitoring

Solar PV is relatively low maintenance, but it is not maintenance-free.

The school should have a clear plan covering:

• Remote performance monitoring

• Periodic electrical inspection

• Visual checks for damage or loose components

• Inverter servicing or replacement planning

• Vegetation management for ground-mounted systems

• Cleaning where dirt or bird fouling is materially affecting output

• Roof and drainage access

• Battery inspections where applicable

• Fault response times

• Warranty claims

Panels do not automatically need an annual scrub. In much of the UK, rainfall deals with ordinary dust.

Cleaning should be based on inspection and performance data, using a competent contractor where roof access is required.

Monitoring is particularly important. A failed inverter can quietly turn a useful solar installation into an expensive piece of roof decoration if nobody notices.

Choosing a solar installer for a school or college

Education sites require commercial design, compliance and project-management experience.

When comparing installers, look for:

• Experience with schools, colleges or public-sector estates

• Site-specific consumption modelling

• Commercial solar design expertise

• Appropriate MCS certification where relevant

• NAPIT, NICEIC or equivalent electrical credentials

• Structural and grid connection capability

• Clear safeguarding arrangements

• Battery and EV charging expertise if required

• Strong equipment and workmanship warranties

• Monitoring and aftercare

• Insurance and relevant case studies

• Transparent costs and assumptions

• A good proposal should explain:

• Why the recommended system size was chosen

• Expected annual generation

• Expected self-consumption and export

• Assumed electricity and export rates

• Likely annual savings

• Maintenance and replacement allowances

• Simple payback and longer-term cash flow

• Roof, planning and grid constraints

• What is included and excluded from the price

If the proposal contains an enormous savings figure but no explanation of the assumptions behind it, ask for the workings.

Are solar panels worth it for schools and colleges?

For many education sites, yes.

Schools and colleges often combine large roofs with predictable daytime electricity demand, which is precisely the sort of profile commercial solar likes.

The strongest projects can:

• Reduce electricity costs

• Improve long-term budget certainty

• Cut operational carbon emissions

• Support climate action plans

• Create practical learning opportunities

• Prepare sites for EV charging and wider electrification

Solar is not right for every building.

A shaded roof nearing the end of its life, a highly constrained grid connection or very low daytime demand can weaken the case considerably.

That is why design should begin with the building and its energy data, not a predetermined number of panels.

Speak to a Commercial Solar Expert Today ☀️

Every education estate is different.

Heatable can assess your electricity consumption, roof space, grid position and long-term objectives before recommending a suitable commercial solar system.

Here’s what schools and colleges can expect:

• Site-Specific Design - A system based on your buildings, operating hours and electricity demand.

• Clear Financial Forecasting - See the estimated cost, generation, annual savings and payback before committing.

• Multiple Funding Routes - Explore outright purchase, finance and Power Purchase Agreement options.

• Experienced Installation - Commercial solar professionals working to the relevant technical and safety standards.

• End-to-End Support - From initial assessment and grid applications to commissioning and ongoing monitoring.

• Straightforward Advice - No mystery maths, oversized systems or suspiciously sunny assumptions.

Book a free commercial solar consultation with Heatable today.