EV + Solar: Complete Savings Guide
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Get Free QuotesHow much does solar save on EV charging?
Electric car + solar panels — UK savings for the 10 most popular EVs: COST PER MILE: Solar charging: 0p/mile (free from surplus). Grid charging (24.5p/kWh): 5-7p/mile. Octopus Go overnight (7.5p): 1.5-2p/mile. Petrol: 14-18p/mile. ANNUAL FUEL SAVINGS (7,400 miles avg UK mileage): Solar vs petrol: £1,000-£1,330/yr. Solar vs grid: £370-£520/yr. HOW MANY PANELS FOR EV?: 5,000 miles/yr: 4-6 panels (1.6-2.4kW extra). 10,000 miles/yr: 8-10 panels (3.2-4kW extra). BEST CHARGER: myenergi Zappi (£800-£1,000) — auto-diverts surplus solar to car. Adjusts speed in real-time. BEST TARIFF: Octopus Intelligent Go — 7.5p overnight for top-ups + smart scheduling. TOTAL SYSTEM: 6kW solar + 10kWh battery + Zappi charger + Octopus tariff = near-zero driving cost. Sources: SMMT EV registration data, DfT average mileage statistics, Ofgem, PVGIS, manufacturer efficiency specs.
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Related: Home Heating Systems
Solar panels are most powerful when combined with an efficient heating system. Heat pumps use solar-generated electricity to heat your home at 300-400% efficiency — making them the ideal partner for solar.
Heat pumps use electricity at 300-400% efficiency, making them ideal partners for solar.
A heat pump converts 1kWh of electricity into 3-4kWh of heat.
From our sister site Home Heat Pump Guide
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