UK Regional Solar Funds Compared 2026 — 30+ programmes mapped

Commercial Solar Finance has compiled the most comprehensive UK reference of regional, devolved-nation, and national funding programmes available for commercial solar PV projects. The reference covers 30+ active programmes across combined authorities, Investment Zones, devolved-nation schemes, foundation grants, and innovation funding routes.

Key findings for journalists

• The funding landscape is fragmented but substantial. Public-sector decarbonisation alone has attracted multi-billion-pound capital across PSDS, Salix, and combined-authority programmes since 2021.
• Private-sector commercial solar primarily relies on the tax system. Direct cash grants for private-sector commercial solar are rare; the 50% First Year Allowance and Annual Investment Allowance deliver the bulk of "funding" for businesses, worth typically 17-25% of capex.
• Investment Zones add capital allowance enhancements rather than direct grants. The 8 active Investment Zone designations across England provide capital allowance reliefs for qualifying advanced-manufacturing and energy investments — solar accompanies broader capex packages.
• Devolved-nation programmes operate parallel to England. Scotland, Wales, and Northern Ireland each operate their own dedicated decarbonisation routes that don't overlap with English regional programmes.
• Charitable foundation grants underexploited. Big Lottery Climate Action Fund, Patagonia Environmental Grant Programme, and Garfield Weston Foundation collectively distribute millions annually to charity-sector decarbonisation including solar.

Notable themes

• Bundled applications win. PSDS Phase 4 awards consistently favour solar+heat-pump+fabric packages over solar-only applications because cost-per-tonne metrics drive scoring.
• Combined-authority programmes are growing fast. Cross-borough green-finance facilities (GMCA, WMCA, WYCA, SYMCA, NECA) have collectively grown by ~£500m in committed capital since 2023.
• Cluster decarbonisation is heat-focused. Industrial cluster programmes (Solent, Humber, Black Country, Mersey Dee) primarily target heavy industrial heat decarbonisation. Solar PV qualifies as supporting measure but not headline.
• City Deals provide novel structures. Bristol City Leap (£424m, 20-year Ameresco partnership) and Cardiff Capital Region City Deal (£1.2bn) demonstrate scalable models for region-wide energy transformation.

Reference resources

• Full table on commercialsolarfinance.co.uk — 30+ programmes with eligibility, terms, sector coverage, and notes
• Downloadable CSV — same data in structured format for analysis
• Grants & funding overview — broader UK commercial solar funding context

For interview / commentary

Commercial Solar Finance is an independent UK commercial solar finance advisory based in Covent Garden, London. We model six finance structures (capital purchase, green loans, finance lease, operating lease, PPA, asset finance) across UK businesses, public-sector estates, charities, and property owners. We do not accept manufacturer commissions, installer commissions, or lender introducer fees.

For interview availability, briefing requests, or data-set queries:

• Email: info@commercialsolarfinance.co.uk
• Phone: 020 3946 2840
• Office: 71-75 Shelton Street, Covent Garden, London WC2H 9JQ