Care Home Solar Cost 2026: 30, 50 & 130 kWp Prices

Most care-home solar pages quote a single vague “from £X” figure and leave you guessing. This guide does the opposite: real 2026 price ranges per kWp, what a 30, 50 and 130 kWp system actually costs gross and after tax relief, the roof area you need, and the specific factors that push the bill up or down. Every number here is supplier-neutral — we don’t install, so we have no reason to inflate them.

How care home solar is priced: £/kWp, not £/panel

Commercial solar is priced per kilowatt-peak (kWp) of installed capacity, and the rate falls as the system gets bigger — economies of scale on scaffolding, design, inverters and labour. In 2026, fully installed turnkey care-home systems land in the £650–£1,000/kWp band:

• Smaller systems (20–40 kWp): ~£850–£1,000/kWp. Fixed costs (scaffolding, DNO application, commissioning) spread over fewer panels.
• Mid systems (40–80 kWp): ~£750–£900/kWp. The sweet spot for a typical 50–80 bed home.
• Larger systems (100 kWp+): ~£650–£800/kWp. Best rate per unit, but may trigger a more involved grid connection.

What you pay inside that range depends on roof type, electrical works and whether battery storage is included. We break those drivers down below — and you can model your own figures against our solar payback calculator before requesting a single quote.

Care home solar cost by system size (2026)

The table below shows indicative installed costs across the three system sizes care homes most commonly fit. “Net after AIA” assumes the full spend is claimed against the £1m Annual Investment Allowance at a 25% corporation tax rate — i.e. a 25% reduction in effective cost for a profit-making operator (more on the tax position below).

System size	Typical home	Roof area	Gross installed cost	Net after AIA (≈25% relief)	Indicative year-1 saving	Typical payback
30 kWp	20–35 bed residential	~150–180 m²	£27,000–£30,000	~£20,000–£22,500	£4,000–£4,800	5–7 yrs
50 kWp	50 bed residential/nursing	~250–300 m²	£40,000–£48,000	~£30,000–£36,000	£6,500–£7,200	5–8 yrs
130 kWp	80–120 bed nursing group	~650–750 m²	£90,000–£110,000	~£67,500–£82,500	£18,000–£21,000	5–7 yrs

Figures assume south-facing roof space, no major structural works, and battery storage priced separately. Payback ranges reflect flat energy prices at the longer end and rising prices (which shorten payback) at the shorter end.

The 50 kWp worked example

A 50-bed home in southern England spending roughly £48,000/year on electricity is the sector’s reference case. A 50 kWp system generates around 45,000 kWh/year. Because care homes run 24/7, self-consumption is high — typically 40–60%:

• 55% self-consumed: 24,750 kWh × 25p = £6,188 saved
• 45% exported: 20,250 kWh × 5p (SEG) = £1,013 earned
• Year-1 benefit ≈ £7,200

That is the core economic point: a self-consumed unit of solar is worth roughly five times an exported one (25p avoided vs ~5p exported). It’s why care homes — running lights, lifts, laundry, kitchens and heating around the clock — beat offices on ROI. A daytime-only office self-consumes 20–30% of its generation; a nursing home soaks up 40–60%. Same panels, far better return. Full sector economics sit on our care home solar cost page.

What drives the cost up or down

Two homes can fit the same 50 kWp and pay £8,000 apart. The variables that move the number:

Pushes cost up

• Roof complexity: clay tile, slate or fragile asbestos roofs need slower, more careful mounting than profiled metal or flat membrane.
• Electrical distance: long cable runs from roof to the main distribution board, or a board that needs upgrading.
• DNO constraints: larger systems (typically 100 kWp+) may need a G99 application and, occasionally, grid-reinforcement works.
• Access: multi-storey buildings, tight courtyards or live care environments needing out-of-hours working.
• Battery storage: worthwhile for 24/7 evening loads, but it’s an additional capital line — see our solar battery storage for care homes guidance before adding it.

Pulls cost down

• Simple roof, single plane, south-facing: fewer panels wasted on orientation, faster install.
• Larger system: better £/kWp, as shown above.
• 0% VAT: until 31 March 2027, solar (and battery) carries 0% VAT for the customer — a genuine 20% saving versus the pre-2022 position. Plan installs before that deadline.
• Existing capacity: an adequate incoming supply and modern distribution board avoid upgrade costs.

Gross vs net: the tax position done honestly

A lot of competitor content overstates the tax relief, so be precise:

• Solar PV sits in the special-rate pool (6% writing-down allowance). It is not eligible for 100% full expensing.
• It does qualify for the Annual Investment Allowance (£1m) — so most care-home-sized systems can be written off in year one against profits — or the 50% First-Year Allowance on special-rate spend.
• Ignore any “FETF 40%” claim — that grant doesn’t apply here.
• Business rates: solar installations are exempt from business-rates increases in England until 2035, so you won’t be penalised on rateable value for going green.

For a profitable operator claiming AIA at 25% corporation tax, that turns a £48,000 gross install into roughly £36,000 net — the figures in the table. Charities and non-trading structures should take their own advice, as the relief works differently.

Funding can change the cost entirely

The cost above is the capital purchase route. Several funding paths reduce or eliminate the upfront figure — and this is where most competitors go silent. Full detail lives on our care home solar grants page; in brief:

• SHDF Wave 2.2: a £1.29bn fund administered by Salix Finance for DESNZ, offering up to 50% match funding — but only for registered providers of social housing (sheltered, extra-care and supported-living schemes they own). Round 2 is expected Q4 2026.
• PPA (Power Purchase Agreement): zero capex. A funder owns the system; you buy the solar electricity at a rate below grid, with day-one positive cashflow. See solar PPA for care homes.
• SEG: export income on surplus generation (4–6p/kWh in 2026).
• Lease and hire purchase: spread the cost while still benefiting from the savings.

When solar is not worth it for a care home

Honesty matters more than a sale here. Solar may not stack up if:

• Your usable south/east/west roof is below ~20 kWp (≈100 m²) — the fixed costs swamp the savings.
• The roof is near end-of-life and needs replacing within a few years (re-roof first, then mount).
• The home is on a fixed energy contract well below market rate — your avoided-cost per kWh is lower, lengthening payback.
• The building runs a low daytime base load (some sheltered/retirement schemes) — though battery or load-shifting can rescue the case.

Different sub-verticals behave differently: nursing and dementia homes have the heaviest 24/7 demand and the best self-consumption; mid for residential; lower for sheltered. We segment all of these under care home types.

CQC and the wider case

A well-executed install also gives you documented evidence for the CQC “Well-led” Key Line of Enquiry — financial stewardship and sustainability. It won’t lift a rating on its own, but it’s a clean line in your governance file alongside an 11-tonne/year CO2 reduction for a 50 kWp system.

Get your exact figure

The ranges here will get you to within a sensible budget, but your roof, supply and energy contract decide the final number. Model your own payback with our solar payback calculator, then request a free, supplier-neutral assessment via our quote form — we’ll size the system, run the gross-vs-net maths and flag any funding route you qualify for before you talk to a single installer.