Tier 1 automotive component manufacturer · 720kWp solar PV
720 kWp · Coventry, West Midlands · commissioned 2025.
Capex: £720,000
Grant value: £210,000 (IETF)
Net cost: £382,500
Payback: 2.8 years
UK commercial solar · Anonymised composite case studies
Real-world solar grant stacks across UK commercial sectors
Four detailed case studies covering manufacturer, hospitality, education and agriculture — each with full funding stack, post-tax-and-grant economics, year-one performance versus modelled, and lessons learned. All anonymised composites with real underlying patterns.
Sector by sector
UK commercial solar case studies
All projects below are anonymised composites — names, dates and exact figures changed; structure, technology, funding combinations, and order-of-magnitude figures are real.
Independent country house hotel, North Wales · 120kWp
120 kWp (annex roof) · North Wales (Grade II listed main house) · commissioned 2024.
Capex: £96,000
Grant value: £0 (no direct grant)
Net cost: £72,000 (after loan)
Payback: 3.4 years
Multi-academy trust · 22 primary school solar PV rollout
615 kWp combined (avg 28 kWp per school) · North East England (Durham, Tyne & Wear, Northumberland) · commissioned 2025.
Capex: £3,600,000
Grant value: £3.6m (PSDS Phase 3b — 100%)
Net cost: £0
Payback: N/A (fully grant-funded)
Lincolnshire arable farm, 280 acres · 145kWp combined
145 kWp (split across grain store + Dutch barn) · Lincolnshire (East Midlands) · commissioned 2025.
Capex: £128,000
Grant value: £32,500 (FETF)
Net cost: £52,300
Payback: 1.2 years
NHS Foundation Trust acute hospital · 1.2 MWp solar + integrated decarbonisation
1.2 MWp solar PV (plus heat pumps, insulation, LED) · Yorkshire and the Humber · commissioned 2024.
Capex: £8,400,000
Grant value: £8.4m (PSDS Phase 3a — 100%)
Net cost: £0
Payback: N/A (fully grant-funded)
Russell Group university campus · 650kWp programme + heat pumps
650 kWp across 8 buildings · North West England · commissioned 2025.
Capex: £2,600,000
Grant value: £2.6m (PSDS Phase 3c — 100%)
Net cost: £0
Payback: N/A (fully grant-funded)
Scottish single-malt distillery · 220kWp + Scottish IETF stack
220 kWp (roof of warehouse + maturation buildings) · Speyside, Scotland · commissioned 2025.
Capex: £195,000
Grant value: £85,000 (Scottish IETF) + £30,000 cashback (Scotland SME Loan)
Net cost: £31,250
Payback: 0.7 years
UK ready-meal manufacturer · 380kWp + refrigeration + heat recovery
380 kWp (production hall + cold store roofs) · East Midlands · commissioned 2024.
Capex: £420,000
Grant value: £168,000 (IETF Phase 3 — 40% of refrigeration package)
Net cost: £147,000
Payback: 1.8 years
Grade II listed Anglican parish church · 25kWp on vestry roof
25 kWp (south-facing vestry roof — unlisted curtilage) · Suffolk (Diocese of St Edmundsbury and Ipswich) · commissioned 2025.
Capex: £21,000
Grant value: £14,500 (combined: Methodist Insurance £5k + Allchurches Trust £7k + Diocesan Trust £2.5k)
Net cost: £6,500
Payback: 1.4 years (post-grant)
Tier-1 UK 3PL operator · 2MWp solar across 4 distribution centres
2.0 MWp combined across 4 distribution centres · East Midlands + South East + North West · commissioned 2025.
Capex: £1,400,000
Grant value: £0 (PPA structure — 0% capex from operator)
Net cost: £0 capex; £74,000 net annual saving vs grid (year 1)
Payback: N/A (PPA — immediate positive cashflow)
County council net zero programme · 1.5 MWp solar across portfolio
1.5 MWp combined across 14 buildings · South West England · commissioned 2025.
Capex: £1,050,000
Grant value: £1.05m (PSDS Phase 3c — 100%)
Net cost: £0
Payback: N/A (fully grant-funded)
UK food retail chain · 22 MWp solar across 320 sites
22 MWp combined across 320 sites (avg 65 kWp per site) · England, Scotland, Wales · commissioned 2024.
Capex: £18,000,000
Grant value: £0 (capex programme)
Net cost: £13.5m
Payback: 2.4 years post-tax
Multi-academy trust · 22 secondary schools · 3.2 MWp combined
3.2 MWp combined (avg 145 kWp per secondary) · Midlands and South · commissioned 2025.
Capex: £8,600,000
Grant value: £8.6m (PSDS Phase 3c — 100%)
Net cost: £0
Payback: N/A (fully grant-funded)
English cathedral · 65kWp solar PV on chapter house roof
65 kWp (chapter house and visitor centre roofs) · Northern England (Diocese) · commissioned 2025.
Capex: £64,000
Grant value: £48,000 combined (Allchurches Trust £18k + Cathedrals Plus £14k + National Lottery successor £10k + Diocesan fund £6k)
Net cost: £16,000
Payback: 1.4 years (post-grant)
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