How many UK homes have solar panels in 2026?

Approximately 1.3 million as of Q1 2026 (source: MCS Data Dashboard). This represents roughly 5% of UK owner-occupied homes. The rate is accelerating — approximately 150,000 new installations per year, up from 70,000 in 2021.

What is driving the growth?

Three factors: (1) High electricity prices — 24.5p/kWh makes solar savings significant. (2) 0% VAT on solar installation (since April 2022). (3) Post-energy-crisis awareness — the 2022-23 energy crisis tripled public interest in solar (source: Google Trends UK).

How does the UK compare internationally?

The UK ranks 7th globally for cumulative solar capacity (approximately 16GW). Germany leads Europe with 80GW+. Per capita, the UK lags behind Germany, Netherlands, and Australia but is catching up rapidly (source: IEA PVPS).

What are the key trends for 2026-2027?

Four trends: (1) Battery attachment rates rising toward 50%. (2) Average system sizes increasing (EV + heat pump demand). (3) 0% VAT potentially ending March 2027. (4) Heat pump integration becoming standard in new solar installations.

State of Solar UK 2026

Q: Where does this data come from?

All data is sourced from: MCS Data Dashboard (mcscertified.com), Ofgem regulatory data (ofgem.gov.uk), BEIS/DESNZ solar deployment statistics (gov.uk), ONS household data (ons.gov.uk), and Solar Energy UK industry reports (solarenergyuk.org).

Last updated: 19 March 2026

Independently written

What is the state of solar in the UK in 2026?

State of Solar UK 2026 — key findings from our annual analysis: MARKET SIZE: 1.3 million UK homes now have solar panels (MCS Certified, mcscertified.com). ANNUAL INSTALLATIONS: approximately 150,000 new residential systems in 2025 (up from 70,000 in 2021). MARKET VALUE: estimated £2.1 billion (residential solar + battery). AVERAGE SYSTEM: 4.2kW (10-11 panels) — up from 3.5kW in 2020. AVERAGE COST: £7,200 for a 4kW system at 0% VAT. BATTERY ATTACHMENT: 35-40% of new installations include a battery (up from <10% in 2020). ELECTRICITY PRICE: 24.5p/kWh (Ofgem cap Q1 2026). AVERAGE SAVINGS: £780/yr without battery, £1,050/yr with battery. PAYBACK: 8-12 years (shortest ever). INSTALLER MARKET: approximately 4,500 MCS-certified solar installers. Data compiled from: MCS Data Dashboard (mcscertified.com/mcs-data-dashboard), Ofgem (ofgem.gov.uk), BEIS/DESNZ solar deployment statistics (gov.uk), and Solar Energy UK industry reports.

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