Solar Today vs 5 Years Ago

How has solar improved in 5 years?

Solar 2026 vs 2021: PANELS: 400-425W (was 300-350W) — 30% more power per panel. EFFICIENCY: 20-22% (was 17-19%). BATTERIES: £4,000-£6,000 for 10kWh (was £8,000-£10,000) — 40% cheaper. VAT: 0% (was 5%) — saving £1,000-£1,600 more. ELECTRICITY: 24.5p/kWh (was 18p) — savings per kWh up 36%. PAYBACK: 8-12 years (was 12-18) — halved. SMART TARIFFS: Octopus Flux/Go now available (didn't exist in 2021). MARKET: 1.3M installations (was 900K). Every metric has improved. 2026 is objectively the best time to install solar in UK history.