What solar costs a UK care home, what it saves, and the VAT rule most quotes get wrong
A care home uses most of the electricity it generates, which is why four to six year paybacks are normal here and rare almost everywhere else. It also pays 0% VAT on the installation rather than 20%, because HMRC treats it as residential accommodation. Get both right and a 50 kWp system costs around £42,600 and returns roughly £8,000 in year one.
You are here because electricity is one of the few costs in the building you can still do something about. Wages are set nationally, insurance keeps climbing, and fee uplifts arrive late and small. This guide gives you installed cost by home size, the year-one saving, the tax treatment that moves the sums by a fifth, and the situations where the honest answer is not yet.
- Budget £850 to £1,050 per kWp installed. A 40 to 60 bed home usually lands on 35 to 60 kWp at £31,000 to £54,000, generating 30,000 to 53,000 kWh a year.
- Payback is typically 4 to 6 years, or 3 to 5 after tax relief. Faster than most commercial rooftops because you consume 70% to 85% of what you generate instead of exporting it.
- Care homes pay 0% VAT on the installation until 31 March 2027. VAT Notice 708/6 lists homes providing care for elderly and disabled people as residential accommodation. From 1 April 2027 the rate becomes 5%.
- That relief is worth the full 20% in cash. Care fees are VAT-exempt, so you cannot reclaim input VAT. A contractor billing 20% by default adds about £8,500 of unrecoverable cost to a £42,600 job.
- The decisive variable is how you heat water. Gas boilers, gas hot water and outsourced laundry pull self-consumption down towards 55%. Electric immersion, heat pumps or electric laundry push it past 85%.
What it costs and what it saves
Commercial rooftop solar runs £850 to £1,050 per kWp installed in 2026 for the 30 to 100 kWp systems most care homes end up with. Below 30 kWp the rate climbs towards £1,200 because scaffolding, design and grid paperwork are near-fixed costs. Care homes usually sit at the upper end for their size, because the roof is pitched and tiled with dormers, hips and vents rather than a clean warehouse plane.
| Home size | System (kWp) | Installed cost (£) | Generation (kWh/yr) | Year one (£) |
|---|---|---|---|---|
| 25-40 beds | 20-35 | 19,000-33,000 | 17,000-31,000 | 3,000-6,000 |
| 40-60 beds | 35-60 | 31,000-54,000 | 30,000-53,000 | 5,500-10,500 |
| 60-90 beds | 60-100 | 51,000-88,000 | 52,000-88,000 | 9,000-16,000 |
| 90+ beds or village site | 100-200 | 80,000-160,000 | 88,000-175,000 | 15,000-28,000 |
Those savings assume 850 to 880 kWh per kWp of annual yield, 75% to 80% self-consumption, 22p import and 5p export. The usual reason a real quote falls outside the range is roof geometry: a home with three usable pitches at different orientations costs more per kWp and yields less than one with a single long south-west elevation.
Scaffolding and labour are 36% of that bill. That is the line to interrogate when quotes differ, because it is where a contractor who has never worked around a dementia unit will have underpriced the job and will come back for more.
Why care homes beat other commercial buildings
Because the building never empties. An office generates its solar peak at midday on a Friday in August when half the staff are away, then exports it at 5p. A care home at that same moment is running a commercial kitchen, laundry, lifts, nurse call, refrigeration, hoists and lighting in occupied rooms. It buys back almost nothing.
Every point of self-consumption is worth roughly four times an exported unit, because you avoid a 22p import instead of earning a 5p export. That ratio decides your payback, not panel efficiency and not brand.
The one thing that decides your self-consumption
Whether hot water and laundry run on gas or electricity. Heating and hot water are the majority of a care home’s total energy, and in most UK homes that is gas. If your boilers, calorifiers and laundry are all gas-fired, your electrical load is lighting, catering, lifts and equipment, which is flatter and lower than the sales pitch implies. Self-consumption there is realistically 55% to 70%. Homes with electric immersion heating, a heat pump, electric laundry or air conditioning in a dementia unit are the ones that reach 85% and above. If a boiler replacement or heat pump is coming in the next five years, size for the building you will have. Putting scaffolding up twice costs more than the extra panels.
Before speaking to any installer, ask your electricity supplier for 12 months of half-hourly data. It is free, it arrives as a spreadsheet, and it shows your actual 10am to 4pm load. A designer sizing an array without it is guessing, and the guess is usually 20% too big.
The tax position, where most quotes go wrong
This is the section worth the most money, and it is missing from nearly every care home solar page online.
VAT: care homes pay 0%, not 20%
The zero rate for energy-saving materials applies to installations in residential accommodation, and HMRC’s list of what counts in VAT Notice 708/6 includes homes providing care for elderly and disabled people, plus hospices. Solar PV with cabling, control panel and inverter is a named qualifying material, and battery storage was added from February 2024. The relief runs to 31 March 2027, after which the rate becomes 5%. Hospitals and prisons are standard-rated, which is why generic commercial solar pages telling you to expect 20% are wrong about your building.
This relief is worth the full 20% to you in cash, which is not true for a factory. A CQC-registered home supplies welfare services, exempt under Schedule 9, Group 7 of VATA 1994, and exempt businesses cannot reclaim input VAT. A warehouse operator charged 20% recovers it on the next return. A care home charged 20% in error absorbs it permanently: £8,520 on the system above, pushing payback from 5.3 years to 6.4. State the building’s use in writing at quotation stage and ask for the VAT treatment to appear on the quote, not the invoice.
Capital allowances and business rates
Solar PV is plant and machinery, but HMRC classes it as special rate expenditure, so it does not qualify for full expensing. That is restricted to main-pool assets and claiming it on solar invites an enquiry. The correct route is the Annual Investment Allowance: 100% relief on the first £1 million of qualifying spend in the year. For a company paying corporation tax at 25%, a £42,600 system cuts the tax bill by £10,650 in year one. Above £1 million, companies claim a 50% first-year allowance on the balance with the remainder written down at 6%. Partnerships and sole traders use AIA and relieve at their income tax rate.
Separately, eligible plant used in on-site renewable generation and storage is exempt from business rates from 1 April 2022 to 31 March 2035 in England, with equivalent treatment in Wales and Scotland. The Valuation Office Agency applies it by leaving the equipment out of your rateable value, so there is no form to file. If the array appears in a revised assessment, that is an error to challenge.
What a saved kilowatt-hour is worth to you
Not your contract unit rate. Two adjustments pull in opposite directions. Electricity supplied to a building used for a relevant residential purpose carries VAT at 5% rather than 20%, and you cannot reclaim it, so a 21p contract rate actually costs you 22.05p. Quotes built on the ex-VAT rate understate your saving by 5%.
The other way: qualifying use also excludes you from the main rate of Climate Change Levy, 0.801p per kWh from April 2026. Standard commercial models add avoided CCL to the savings column. If you hold a valid qualifying use certificate with your supplier you are not paying it, so that line should be zero. On 34,000 kWh of self-consumption, an installer who includes it has overstated your annual return by £272. Neither adjustment changes the decision. Both tell you whether the projection you were shown was built for your building or pulled from a template.
A worked example on a 55-bed home
A 55-bed residential home in the East Midlands, gas boilers, electric laundry, importing 205,000 kWh a year at a contracted 21p. The roof carries 50.2 kWp across a main south-west pitch and a smaller south-east return.
Generation is 50.2 kWp at 875 kWh per kWp, so 43,900 kWh. Of that, 78% is used on site: 34,200 kWh. Each avoided unit is worth 21p plus irrecoverable VAT at 5%, so 22.05p. Self-consumption saving, £7,541. The remaining 9,700 kWh exports at 5p, worth £485. Year one, £8,026.
Against £42,600 of capital at 0% VAT, simple payback is 5.3 years. Claim the AIA and the net cost after 25% relief is £31,950, bringing payback to 4.0 years. Note which figure each percentage applied to. Self-consumption was applied to generation, not to total consumption. Installers present that the other way round more often than you would expect, and it is where optimistic projections come from.
Trading care homes are valued on a multiple of maintainable EBITDA. An £8,000 annual reduction in operating cost is £8,000 of additional EBITDA, and at the 8x to 12x multiples seen on single-asset sales that is £64,000 to £96,000 of enterprise value from a £42,600 spend. A buyer’s valuer will test whether the saving is maintainable, and a system sitting under a long power purchase agreement will not count the same way as one you own outright. If a sale is on the horizon, that distinction matters more than the payback period does.
When solar is the wrong call
The roof needs work within ten years. Re-roof first. Removing and refitting a 50 kWp array so a roofer can get underneath costs £6,000 to £10,000 plus a second scaffold, and nobody prices that into the original payback. Ask for a written roof condition report before you sign.
You lease the building. Many UK homes sit under sale-and-leaseback arrangements with healthcare landlords. You need consent, and you need to know what happens to the asset at lease end. With under 15 years to run and no compensation clause for tenant improvements, you may be funding something you hand back.
The building is listed or in a conservation area. Plenty of homes are converted Victorian and Edwardian houses. Permitted development does not apply, listed building consent is a separate application from planning, and a refusal on the principal elevation can cut a viable 40 kWp scheme to an unviable 12 kWp one.
Your daytime electrical load is small. A 30-bed home with gas heating, gas hot water, outsourced laundry and no air conditioning may only draw 12 to 18 kW between 10am and 4pm. Fit 40 kWp there and you have built an export business at 5p a unit.
Your DNO will not accept export. On a constrained network you may be offered a zero-export or heavily limited connection. That is survivable where self-consumption is high, but it removes the export line from the model, and the numbers are worth re-running before you proceed rather than after.
Installing on an occupied home
The physical work is one to two weeks. The programme around it is longer, and the difference between a smooth job and a complaint to the manager sits entirely in the planning.
Twelve months of consumption data, then a survey of purlin and rafter loading, tile condition and unshaded area. Two to four weeks.
Anything above 3.68 kW per phase, so 11.04 kW on three-phase, needs prior written approval rather than simple notification. Budget up to 45 working days and submit before ordering equipment.
Roof-mounted solar on a non-domestic building is usually permitted development where panels project no more than 200mm and sit below the ridge. Listed buildings and conservation areas need a formal application.
Noise windows, no drilling during medication rounds or rest periods, scaffold bases secured against residents who wander, DBS-checked operatives, and dust control near residents with respiratory conditions.
Nurse call, lifts and medication fridges need a scheduled shutdown window with temporary cover agreed in advance. Panel layout must preserve fire service roof access. Then MCS certificate, export MPAN and half-hourly export meter.
Capex, hire purchase or PPA
Buying outright gives the best return and the only route to the capital allowance, but puts the whole cost in one year. Hire purchase or an asset finance lease spreads it over five to seven years and usually leaves the monthly payment below the monthly saving from the first month. Because you take title, you keep the allowances and the asset appears on your balance sheet, which matters if you refinance or sell. A power purchase agreement means a third party funds, owns and maintains the system and sells you the electricity: no capital, no maintenance risk, and no capital allowance because you own nothing.
Read the PPA term before the headline discount. Twenty to twenty-five years is standard, the rate usually escalates with RPI, and the discount to grid is commonly 10% to 25% rather than the half you might assume. Two clauses decide whether it works: what happens on a sale of the home, and the buy-out schedule if you want the asset back early. A buyer inheriting a 22-year agreement at an above-market rate prices that into their offer, and the discount usually exceeds the value of the electricity saved.
On batteries: storage adds £600 to £900 per usable kWh and lifts self-consumption from roughly 70% towards 85%, but on its own arithmetic it pays back in eight to twelve years rather than four to six. What it buys is continuity for nurse call, lifts, medication refrigeration and emergency lighting through an outage, and that only works if the system is specified with an emergency power supply function and the critical circuits are physically wired to it. It is not a substitute for a standby generator on anything life-critical. Specify lithium iron phosphate chemistry, site the unit away from escape routes, and update the fire risk assessment before commissioning.
What to insist on in every quote
- VAT stated as 0% on the quotation. With the reason: installation of energy-saving materials in residential accommodation under VAT Notice 708/6.
- Self-consumption modelled from your half-hourly data, not a national profile or a bed count. Ask what percentage was assumed and what it was applied to.
- Separate lines for panels, inverters, mounting, scaffolding, labour and G99. A lump sum hides where access has been underpriced.
- A written roof condition report and structural calculation, including expected remaining roof life.
- Workmanship warranty in writing. Ten years is the benchmark, and it is separate from the panel and inverter manufacturer warranties.
- MCS certification, and clarity on who carries the risk if the DNO imposes an export limit after design. Deposit no more than 25%, with staged payments tied to scaffold up, panels fixed and commissioning.
- kWp
- Kilowatt-peak, the array’s rated output. A UK rooftop typically yields 850 to 900 kWh per kWp per year.
- Self-consumption
- The share of generation used in the building rather than exported. Avoided import is worth about four times export, so this drives the return.
- Relevant residential purpose
- HMRC’s category covering care homes, hospices, children’s homes and student accommodation. It gives 0% VAT on installation and 5% VAT on your electricity supply.
- G99
- The grid connection process for generation above 3.68 kW per phase. Requires written DNO approval before commissioning, unlike the simpler G98 notification.
Frequently asked questions
How much do solar panels cost for a care home?
£850 to £1,050 per kWp installed in 2026 for a typical 30 to 100 kWp system. A 40 to 60 bed home usually spends £31,000 to £54,000. Care homes pay 0% VAT until 31 March 2027, so the quoted figure is the figure you pay.
Do care homes pay VAT on solar panel installation?
No, not until 31 March 2027. VAT Notice 708/6 lists homes providing care for elderly and disabled people as residential accommodation, which qualifies for the zero rate on installed energy-saving materials including solar PV and battery storage. From 1 April 2027 the rate rises to 5%. Because care fees are VAT-exempt and input VAT is not recoverable, being charged 20% in error is a permanent cost rather than a cash-flow one.
What payback period should a care home expect?
Four to six years on simple payback, three to five once the Annual Investment Allowance is claimed. Care homes sit at the fast end of the commercial range because 70% to 85% of generation is used on site. Homes with electric hot water or heat pumps land at the fast end of that band; homes with gas heating, gas hot water and outsourced laundry land at the slow end.
Are there grants for solar panels on care homes?
There is no general capital grant scheme for privately owned care homes in 2026. The support is tax-based: 0% VAT, the Annual Investment Allowance, and exemption from business rates on the equipment to March 2035. Local authority owned homes may be eligible through public sector decarbonisation funding, and charity-run homes and hospices can approach charitable trusts for capital appeals. Treat any page promising a solar grant to a private operator with caution.
Do we need planning permission?
Usually not. Roof-mounted solar on a non-domestic building is generally permitted development where panels project no more than 200mm from the roof surface and do not exceed the ridge. Permission is needed if the home is listed, in a conservation area, or if you are proposing wall-mounted panels on a principal elevation or tilted frames visible from the street.
How disruptive is installation for residents?
Manageable with planning. Physical works run one to two weeks, with scaffolding up for around three. The disruptive elements are scaffold erection, roof-level noise and the electrical isolation window. Agree quiet periods, secure scaffold bases, DBS-checked operatives and a scheduled shutdown for nurse call and lifts in advance. Contractors experienced in the sector will phase the work wing by wing.
The building type is the advantage, the tax treatment is the margin
A care home is close to the ideal commercial solar host. The load never stops, midday summer demand is real, and 70% to 85% of generation displaces electricity you would otherwise buy at over 22p. That produces four to six year paybacks where an office would see ten.
The part almost nobody tells you is that HMRC treats your building as residential accommodation, so the installation is zero-rated to 31 March 2027, and because your care fees are VAT-exempt you could never have reclaimed the 20% anyway. That relief is worth about a fifth of the project cost in permanent cash, and it expires.
Two things before you take a quote. Get 12 months of half-hourly data so the array is sized to your real daytime load, and get the VAT treatment stated on the quotation with the reason attached. Everything else is detail by comparison.
METHODOLOGY: Installed costs reflect UK commercial rooftop pricing published by MCS-certified installers during 2026, adjusted upward for pitched tiled roofs with complex geometry, which is the typical care home condition. Generation modelled at 850-880 kWh per kWp. Savings modelled at 75-80% self-consumption, 21p per kWh contracted import plus 5% irrecoverable VAT, and 5p per kWh export.
SOURCES: VAT treatment per HMRC VAT Notice 708/6, sections 2.7, 2.11, 2.19 and 2.21. Welfare services exemption per Schedule 9, Group 7, VAT Act 1994. Reduced-rate electricity and CCL exclusion per VAT Notice 701/19 and Excise Notice CCL1/3. Business rates exemption for on-site renewable generation runs 1 April 2022 to 31 March 2035 in England. Capital allowances per HMRC classification of solar PV as special rate expenditure.
DISCLAIMER: Prices are indicative and subject to survey. This is general information, not tax or financial advice; confirm your VAT and capital allowances position with your accountant before committing. Figures current as at August 2026. The 0% VAT window closes 31 March 2027 and the CCL main rate changes each April.
