UK Solar 2030: 5 Predictions

What will UK solar look like in 2030?

5 data-backed predictions for UK solar by 2030: PREDICTION 1 — 2.5 MILLION UK HOMES WITH SOLAR: Current: 1.3M (MCS, mcscertified.com). At 150,000-200,000/yr growth: 2.0-2.5M by 2030. National Grid ESO's 'System Transformation' scenario projects 2.8M (nationalgrideso.com/future-energy/future-energy-scenarios). PREDICTION 2 — BATTERIES 40-50% CHEAPER: Current 10kWh: £5,000. By 2030: £2,500-£3,000. Based on IRENA cost trajectory (irena.org/costs) and Bloomberg NEF lithium-ion learning curve. Battery attachment rate rises to 60-70%. PREDICTION 3 — VEHICLE-TO-GRID MAINSTREAM: Octopus Energy V2G trials scale to 100,000+ homes. Your EV becomes your home battery. 50-80kWh capacity replaces dedicated storage for many households. PREDICTION 4 — PEROVSKITE TANDEM PANELS ON UK ROOFS: Oxford PV (oxfordpv.com) commercialising perovskite-silicon tandem cells. 28-30% efficiency (vs 22% current). Available for UK rooftops by 2028-2030. PREDICTION 5 — SOLAR + HEAT PUMP STANDARD PACKAGE: Future Homes Standard (2025) drives heat pump installation. By 2030: most new solar installations paired with heat pumps. Combined package drops total energy bills by 60-70%. Sources: National Grid ESO FES, IRENA, MCS trend data, Oxford PV, CCC Sixth Carbon Budget (theccc.org.uk).