Commercial solar for care homes in the UK

Commercial solar for care homes in the UK

Commercial solar panels for care homes in the UK can be a strong investment where the site has consistent daytime electricity use, suitable roof space, manageable grid connection requirements and a long enough occupancy plan to benefit from the savings. Care homes are often well matched to solar PV because they operate every day and use electricity for lighting, kitchens, laundry, lifts, ventilation, pumps, medical equipment, offices and, increasingly, EV charging.

Solar will not usually make a care home fully energy independent. In most cases, a commercial solar PV system reduces grid imports during daylight hours, with surplus electricity exported or stored if battery storage is included. The commercial case depends less on the number of panels alone and more on how much generated electricity is used on site at the time it is produced.

A sensible care home solar proposal should assess roof condition, structural loading, shading, fire safety, electrical capacity, DNO approval, resident disruption, insurance requirements and future energy plans. The cheapest quote is rarely the best comparison point unless every installer has allowed for the same surveys, access, grid work, monitoring and operational constraints. **Author note:** This guide has been prepared by Kilowatts UK’s commercial renewable-energy content team, drawing on UK solar PV procurement, electrical compliance, DNO connection and building-suitability considerations for commercial premises. It is intended to help care home owners, operators, estates teams and finance directors ask better questions before commissioning a site-specific design. It is not a substitute for a structural survey, electrical design, planning advice, insurance review or tax advice.

Why care homes are often good solar sites

Care homes differ from many commercial buildings because they use power seven days a week. There is usually a steady daytime base load from kitchens, laundry, lighting, ventilation, office equipment, refrigeration and care-related systems. That improves the chance that solar generation is consumed on site rather than exported at a lower value.

Homes with larger laundry facilities, electric cooking, air conditioning, heat pumps or EV charging plans may be particularly suitable. East-west roof layouts can also work well because they spread generation more evenly through the day, rather than concentrating output around midday.

Solar still produces electricity in cloudy UK weather because solar panels use daylight, not heat. Output is lower in winter and on dark days, so design assumptions should be realistic. A commercial solar panel system that looks excellent in summer may only make a modest contribution in December, especially for sites with higher evening and winter demand. For care home operators, the main attraction is usually a combination of:

• Lower imported electricity consumption.
• Better control over long-term energy costs.
• Reduced carbon emissions for ESG and sustainability reporting.
• Potential support for future electrification, such as EV charging or heat pumps.
• A visible investment in lower-carbon operations for residents, families, commissioners and staff.

What a care home solar system includes

A commercial solar PV system for a care home normally includes roof-mounted or ground-mounted panels, mounting equipment, inverters, cabling, isolators, metering, monitoring and grid connection equipment. Larger sites often have a three-phase electrical supply, and the design must account for load balancing, protection settings and the capacity of the existing distribution boards.

The panels convert daylight into direct current electricity. Inverters convert that electricity into alternating current for use in the building. The care home uses solar generation first where demand is present, reducing imported electricity from the grid. Surplus power may be exported under an export tariff, restricted by export limitation equipment, or stored in a battery if the system includes one.

Batteries are optional. They can increase self-consumption, help with evening demand, support peak tariff management and contribute to resilience planning. However, they are not always financially justified where the care home already uses most of the solar electricity during the day. Backup-capable solar and battery systems need specialist design because a standard grid-connected solar PV system shuts down during a power cut for safety reasons. If resilience is a key requirement, the installer should explain exactly which circuits can be supported, for how long, under what conditions and whether additional switchgear is required.

How much commercial solar costs for care homes

Typical UK commercial solar costs are often around £700 to £1,200 per kWp installed, excluding VAT. Smaller systems usually cost more per kWp than larger systems because design, access, electrical work and project management are spread across fewer panels.

Indicative commercial solar panel installation costs for care homes may be:

• A 30 kWp system: roughly £25,000 to £45,000 excluding VAT.
• A 50 kWp system: roughly £40,000 to £70,000 excluding VAT.
• A 100 kWp system: roughly £75,000 to £120,000 excluding VAT.
• Full design and generation modelling.
• Scaffolding, edge protection and safe access.
• Structural assessment or structural engineer input.

Those ranges are only a starting point. Real care home solar projects can move above or below them depending on the building and the electrical connection. Cost is affected by roof access, scaffolding, roof type, structural work, asbestos management, monitoring, grid applications, export limitation, inverter location, fire stopping, cable routes and any upgrades needed to the main distribution board. VAT can also be complex for care homes. Some energy-saving materials installed in residential accommodation may qualify for temporary VAT relief in certain circumstances, but care homes can fall into specific VAT categories depending on the nature of the accommodation and care provided. Operators should not rely on a generic VAT assumption without professional advice. When comparing care home solar quotes, check whether the price includes: Asbestos-related checks or exclusions. DNO application and export arrangements. Monitoring hardware and software. Fire stopping and labelling. Commissioning, handover documents and maintenance guidance. Any provisional sums for electrical upgrades.

What affects payback and savings

Payback for UK care home solar is often around 4 to 8 years, but the actual result depends on site-specific data. The most important factor is how much solar electricity the home uses directly, because avoided imported electricity is usually worth more than exported electricity.

A 50 kWp system may generate roughly 42,500 to 55,000 kWh per year in the UK. A 100 kWp system may generate roughly 85,000 to 110,000 kWh per year. Annual output depends on location, orientation, pitch, shading, inverter design and maintenance.

Self-consumption for care homes may be around 50% to 90%, depending on demand and system size. A smaller system on a high-load site may use nearly all generation on site, while an oversized system on a lower-load site may export more. Export still has value, but the Smart Export Guarantee is usually secondary to bill savings. The main financial factors are: Daytime electricity unit rate. Amount of solar generation used on site. Export tariff and export metering arrangements. Installed system cost and finance structure. Roof and electrical upgrade requirements. DNO requirements and any grid reinforcement costs. Care homes on fixed contracts, flexible purchasing arrangements or half-hourly tariffs may see different savings from the same solar system. The proposal should compare solar generation against the tariff structure, not just the annual electricity bill. For stronger financial modelling, ask for savings projections using: Planned future loads such as EV charging or heat pumps. Maintenance costs and inverter replacement assumptions. Whether the property is owned, leased or part of a wider care group estate. At least 12 months of electricity consumption data. Half-hourly data where available. Current and expected future import rates. A clearly stated export tariff assumption. Conservative generation estimates. Degradation assumptions over the system life. A sensitivity analysis showing what happens if prices, export rates or self-consumption change.

Government support, export payments and tax treatment

UK government support for solar changes over time. Current support is generally more about export payments, tax treatment and planning policy than direct grants for private care home operators. Public sector or charity-linked care facilities may have different routes, but most private care homes should not assume grant funding is available.

The Smart Export Guarantee allows eligible sites to be paid for exported solar electricity. Rates vary by supplier, and some suppliers require MCS certification or an equivalent recognised installation standard. Commercial sites may also need half-hourly metering and an export MPAN before export payments are fully operational.

Companies may be able to use capital allowances for solar investment. The Annual Investment Allowance or full expensing may be relevant in some cases, depending on the ownership structure and accounting position. This should be checked with an accountant before final investment approval. Care home operators should also confirm how a solar PV asset will be treated within their wider financial and operational structure, especially where:

• The care home property and operating company are separate entities.
• The building is leased.
• Energy costs are recharged internally.
• The operator is part of a multi-site group.
• The care home is run by a charity, CIC or public-sector body.
• Finance, leasing or power purchase agreement options are being considered.

Roof, planning and grid connection checks

Roof suitability is one of the first practical questions. Many care homes are made up of original buildings, later extensions, plant rooms, flat roofs, pitched roofs and mixed roof coverings. A desktop estimate can be useful, but it should not replace a proper survey.

A good early assessment should check:

Roof age and condition. Structural loading capacity. Shading from trees, chimneys, parapets and nearby buildings. Asbestos information. Safe access for installation and maintenance. Roof warranty implications. Planning rules vary across England, Scotland, Wales and Northern Ireland. Many rooftop commercial solar installations in England may fall under permitted development if they meet the relevant conditions, but listed buildings, conservation areas, National Parks, Areas of Outstanding Natural Beauty and World Heritage Sites need particular care. Ground-mounted solar normally requires more planning consideration than rooftop solar. Grid connection is another major issue. Smaller systems may fall under G98 rules, while larger commercial systems usually require G99 approval. The Distribution Network Operator may approve the system, require export limitation, request further studies, or identify upgrade work. This can affect project timescale, cost and viable system size. For care homes, grid and electrical checks should be treated as core design items, not late-stage administration. The installer should confirm: Space for inverters, isolators and cable routes. Existing lightning protection and whether it needs review. Location of plant rooms, ventilation equipment and roof access hatches. Whether a roof replacement or refurbishment is likely during the solar system’s life. Whether the existing supply is single-phase or three-phase. The agreed supply capacity. Whether the proposed system needs G98 or G99 approval. Whether export limitation is required. Whether an export MPAN is needed. Whether the main distribution board has sufficient capacity. Whether shutdowns will be required for connection works. How critical circuits will be protected during installation and commissioning.

Fire safety and operational disruption

Fire safety is especially important in care homes because residents may be vulnerable and evacuation can be complex. Solar PV does not remove the need for a conventional fire risk assessment, and the fire strategy should be reviewed when a system is added.

Design should consider fire service access routes, safe inverter locations, cable routing, isolation, labelling and fire-rated penetrations. DC cable runs should be planned carefully, and unnecessary internal routing should be avoided where practical. Insurers may also have specific requirements for competence, installation standards, isolators, inspection and maintenance records.

Installation in an occupied care home needs more planning than a normal commercial roof. Resident safety, safeguarding, infection control, deliveries, ambulance access, staff parking, noise and planned shutdowns all matter. The final electrical connection may require a shutdown, so this must be coordinated with critical systems such as nurse call equipment, refrigeration, lifts, fire alarms and medical equipment. A good project plan should include:

• Site-specific RAMS.
• Working-at-height controls.
• Resident and visitor segregation.
• Contractor sign-in and safeguarding arrangements.
• Delivery and storage locations.
• Noise and disruption controls.

Care home operators should also notify their insurer before installation. Some insurers may ask for details of installer competence, system design, isolation arrangements, maintenance schedules and fire safety measures before confirming cover. Agreed working hours. Emergency access arrangements. Shutdown planning and advance notice. Commissioning and handover procedures.

When solar may not be suitable

Solar is not right for every care home. A site with a poor roof, major shading, uncertain ownership or disproportionate grid costs may struggle to justify the investment. Buildings due for roof replacement or redevelopment should normally deal with those works before installing panels.

Solar may be less suitable where:

The roof is heavily shaded for much of the day. The roof condition is poor or near replacement. The operator has only a short lease without landlord consent. Daytime electricity demand is low. Grid connection costs are too high. Planning constraints prevent a practical design. In these cases, it may still be worth reviewing future options. For example, a planned roof refurbishment can be a good opportunity to design solar-ready roof coverings, cable routes and inverter locations. If solar is not viable immediately, a care home may still reduce energy costs through LED lighting, controls, heating optimisation, voltage management, power factor correction, improved maintenance or better tariff procurement. These measures can sometimes improve the case for solar later by creating clearer load profiles and freeing electrical capacity for future projects. The site is likely to be redeveloped soon. The roof structure cannot take the additional load without expensive strengthening. Insurance conditions make the proposed design impractical. Resident disruption would be unacceptable during the proposed programme.

Choosing an installer for a care home project

Care home solar procurement should focus on competence, evidence and scope clarity. The right installer should understand commercial PV, occupied sites, DNO applications, three-phase electrical systems, roof constraints and the operational realities of care environments.

Ask for a proposal that explains:

System size and estimated annual generation. Expected self-consumption and export assumptions. Roof layout and access requirements. Structural survey requirements. DNO application route and likely timescale. Fire safety and isolation approach. Be cautious with quotes that look complete but exclude scaffolding, structural checks, asbestos considerations, grid applications, monitoring, export setup or electrical upgrades. These items can materially change the final cost and programme. For multi-site care groups, it can be efficient to standardise surveys, data collection and procurement. Even so, each care home still needs its own roof, planning and grid assessment because two apparently similar buildings can have very different constraints. When shortlisting commercial solar panel installers for care homes, ask for evidence of: Monitoring and maintenance arrangements. Inverter replacement assumptions. Exclusions and provisional sums. Relevant installation standards and certification. How the contractor will manage safeguarding and resident disruption. How handover information will be provided to the estates or management team. Commercial solar PV experience, not only domestic installations. Electrical competence and suitable accreditations. DNO application experience. Insurance cover for the proposed works. Working-at-height competence. Familiarity with occupied and sensitive sites. Clear maintenance and monitoring support. References or case studies from comparable commercial buildings.

What information to gather before asking for quotes

The quality of a solar quote depends heavily on the information provided at the start. Monthly bills can indicate annual usage, but half-hourly data is much better for sizing because it shows when electricity is being used.

Before requesting proposals, gather:

12 months of electricity bills. Half-hourly consumption data where available. MPAN details and supply capacity. Roof plans, roof age and roof warranty information. Asbestos records. Structural information if available. This information helps installers avoid guesswork and gives the care home a better basis for comparing offers. A well-prepared request for quotation should also state whether the care home wants: Details of future EV charging, heat pumps or laundry upgrades. Landlord consent position if the property is leased. Insurance requirements. Listed building or planning constraint information. Site access restrictions and preferred working hours. Known electrical issues or planned upgrades. Details of standby generators or UPS systems if present. Any corporate carbon, ESG or net zero targets. A lowest-capital-cost design. A fastest-payback design. A design that maximises carbon reduction. A system sized around future EV charging or heat pump demand. Battery storage included from the start. A solar-ready design with batteries considered later. A multi-site survey and rollout plan.

Making a decision

Commercial solar for care homes works best when the design is based on real electricity data, a proper roof survey and a realistic view of grid, planning, safety and operational constraints. The strongest projects usually combine high daytime demand, suitable unshaded roof space, good self-consumption and clear long-term occupancy.

Do not judge the project only by the number of panels or the lowest headline price. A well-specified system should reduce electricity imports, support carbon reporting, provide clear monitoring data and fit safely into the day-to-day operation of the home.

Before approving a care home solar PV project, decision-makers should be comfortable that: The savings model uses realistic import, export and self-consumption assumptions. The roof and structure have been properly considered. DNO requirements are understood. Planning constraints have been checked. Fire safety, insurance and maintenance requirements are covered. Installation disruption can be managed safely around residents and staff. For many UK care homes, solar panels can be a practical way to reduce exposure to electricity prices and demonstrate long-term investment in lower-carbon care. The best results come from careful sizing, competent installation and an honest assessment of the building before contracts are signed. The proposal is clear on inclusions, exclusions and future costs.