Every resource for UK commercial solar funding 2026.
Calculators, eligibility checkers, scheme directories, location guides, vertical guides, technical glossary and deep-dive blog content. Everything we use in client engagements is published here.
Tools
- Solar capex + payback calculator
Estimate system size, capex, savings - Grant eligibility checker
Active 2026 schemes for your business - Free quote request
4-step scoping form
Scheme directories
- Glossary + scheme status
Active vs closed for every scheme - All UK funding schemes
Master overview - Annual Investment Allowance
- AIA
- Local Growth Fund
- Smart Export Guarantee
- Power Purchase Agreements
- Solar leasing UK
Vertical sector guides
Adjacent technologies
Location guides — UK city coverage
See which grants your business qualifies for — free 20-minute funding review.
Tell us your sector, roof size and energy spend. We reply by email with a shortlist of grants and the realistic capex you can expect to recover.
No obligation. We don't charge for grant scoping.
Funding by asset class
The allowance depends on the asset, and most pages on this topic get it the wrong way round. Solar PV is special-rate expenditure (HMRC Capital Allowances Manual CA22335), so the 100% year-one route is the Annual Investment Allowance — Full Expensing is a main-rate measure and does not reach it. Battery storage, EV charging and heat pumps are Heat pumps for space or water heating are special-rate: AIA, then the 50% FYA. Standalone batteries are probably main-rate (full expensing for companies), but HMRC has no specific guidance; confirm with your adviser.
- commercial heat pump prices by system size
Special-rate integral feature: AIA up to £1m, then the 50% special-rate first-year allowance for companies; full expensing does not apply.
- battery storage economics for commercial sites
Probably main-rate plant (HMRC has no specific guidance, so confirm with your adviser). Stacks with solar for self-consumption.
- commercial solar capex bands for 2026
Capex bands per kWp before any relief.
- solar panels for industrial buildings
Large roofs, high daytime load — the strongest case.
- AIA on a commercial solar installation
Solar is special-rate, so AIA is the 100% year-one route.
Find out which 2026 schemes your site actually qualifies for
- 1. A short written funding note naming every scheme your site qualifies for in 2026 — and the ones it does not.
- 2. Indicative system size and a capex band for your roof.
- 3. Year-one tax treatment per asset in £ — solar is special-rate expenditure, so the route is the Annual Investment Allowance; heat pumps for building heating are also special-rate integral features, and standalone battery storage is probably main-rate plant (HMRC has no specific guidance, so confirm with your adviser). Most pages get this the wrong way round.
- 4. Projected SEG export revenue at current rates.
- 5. Any red-flag eligibility or DNO issues we can see up front.
Covers solar PV, battery storage, EV charging and commercial heat pumps — separately or as one bundled project. If your project is a heat pump or a battery rather than a roof, say so in the message box and the note is written against that asset instead.
- · We do not pass your details to multiple installers.
- · We do not run a lead auction, and your phone number is optional.
- · No marketing lists, no unsolicited calls.
- · We are an independent funding information service — not an installer.