How to Get a Solar Panel Grant in 2026 UK
In 2026 UK, you can secure a fully-funded solar PV install via ECO4 if you receive qualifying benefits and your home has an EPC rating of D, E, F or G. Without benefits, the GBIS scheme contributes ~£1,500, and 0% VAT applies to every install until 31 March 2027 (saving £700–£1,400 on a typical 4kW system). Plus, the Smart Export Guarantee (SEG) pays you 5–30p/kWh for exported energy.
Solar grants 2026 UK — the short version
- ECO4 — fully-funded install if you claim qualifying benefits and your home is EPC D–G
- GBIS — £1,500 contribution for households in lower Council Tax bands (A–D England, A–C Scotland/Wales) with EPC D–G, even without benefits
- 0% VAT on all solar PV, batteries and installation until 31 March 2027
- Smart Export Guarantee (SEG) — 5–30p/kWh for electricity you export back to the grid
- Home Energy Scotland — interest-free loan up to £6,000 (Scotland-only)
- Nest Cymru — Wales-only support for low-income households
Typical 2026 saving combining 0% VAT + GBIS: £2,200–£2,900 off a 4kW install (gross cost £6,500–£8,500, net to customer £3,800–£6,000). With ECO4: £0 to install if you qualify.
How to apply — the 6-step playbook
Step 1 — Check your EPC rating
Search the EPC register at gov.uk/find-energy-certificate. ECO4 and GBIS both target EPC D–G properties. If your EPC is C or above, you don't qualify for grant funding (but 0% VAT and SEG still apply).
Step 2 — Check ECO4 / GBIS eligibility
ECO4: if you receive Pension Credit, Universal Credit, Income Support, ESA, JSA, Housing Benefit or Child Benefit (with income thresholds). GBIS: if your property is in lower Council Tax bands (A–D in England, A–C in Scotland/Wales) AND has EPC D–G. Eligibility checker: gov.uk/apply-great-british-insulation-scheme.
Step 3 — Apply through your energy supplier or scheme partner
All major UK energy suppliers (British Gas, Octopus, EDF, OVO, E.ON, Scottish Power, Shell Energy) are obligated to deliver ECO4 / GBIS measures. Apply via the supplier portal — you don't have to be their customer. Expect a 4–8 week eligibility decision.
Step 4 — Get 3 MCS-certified installer quotes
Crucial: only MCS-certified installers qualify you for SEG and grants. Verify on the MCS register at mcscertified.com. Get 3 quotes — the spread on a 4kW system in 2026 is typically £5,800–£8,800.
Step 5 — Confirm 0% VAT applies and is itemised
From April 2022 to 31 March 2027, solar PV, battery storage and labour are 0% VAT. Make sure quotes show 0% rather than 5% or 20% — some installers still apply outdated rates. Save £700–£1,400.
Step 6 — Apply for SEG with your supplier post-install
Once installed and your MCS certificate is issued, apply for SEG through your chosen energy supplier (you don't have to use your existing one). Top SEG tariffs in 2026: Octopus Outgoing Lite 8–15p, EDF Export 7–12p, Octopus Outgoing 30p (with smart-tariff bundle). Expect £120–£380/year SEG income on a 4kW system.
Which grant suits which household?
Frequently asked questions
Yes — via ECO4. If you claim Pension Credit, Universal Credit or other qualifying benefits and your property has an EPC of D–G, you can get a fully-funded solar PV install at £0 cost. Apply through any energy supplier obligated under the ECO4 scheme.
ECO4 funds a full install for benefit-claimant households. GBIS (Great British Insulation Scheme) is a smaller £1,500 contribution open to lower Council Tax band households with EPC D–G — no benefits required. You can stack 0% VAT on top of either.
31 March 2027. The reduced rate covers solar PV panels, battery storage (in same install), inverters and the labour to install them. After that date, the rate reverts to 5% (energy-saving materials) unless extended.
A typical 4kW UK system exports 1,800–2,400 kWh/year. At Octopus Outgoing Lite (8–15p) that's £145–£360/year. With Octopus Outgoing 30p tariff (requires smart bundle) you can hit £540–£720/year, but consumption tariffs are higher — always model the full bundle, not just export.
Yes. Both the installer and the install must be MCS-certified. Without it, no UK supplier will accept your SEG application. Verify your installer on mcscertified.com before signing.
4–8 weeks for eligibility decision, then 4–8 weeks for survey and install scheduling. Total 2–4 months from application to panels-on-roof. Spring/summer applications run faster than autumn/winter.
Sources used in this guide
- gov.uk — Great British Insulation Scheme
- Ofgem — ECO4 eligibility & application
- Ofgem — Smart Export Guarantee
- MCS — Microgeneration Certification Scheme
Methodology: Grant values and tariffs based on UK government and Ofgem published rates as of May 2026. Cost figures from BestBuilders' UK MCS-certified solar installer network (290+ vetted installers). Last fact-checked: .