How many panels do I need to charge an EV?

For 5,000 miles/yr: 4-6 extra panels (1.6-2.4kW). For 10,000 miles/yr: 8-10 extra panels (3.2-4kW). Add this to your household consumption when sizing your solar system.

What is the best EV charger for solar?

myenergi Zappi (£800-£1,000 installed) — the only charger that automatically adjusts charging speed to match available solar surplus. Alternatives: Ohme, Pod Point with solar CT clamp.

Can I charge at night from my battery?

Yes — but a 10kWh battery only provides about 30-35 miles of range. Better strategy: charge from solar during the day and use cheap overnight tariff (Octopus Go at 7.5p/kWh) for top-ups.

Is it worth getting solar just for EV charging?

Yes — even for EV charging alone, solar saves £400-£600/yr. Combined with household electricity savings (£580-£1,100/yr), the total ROI is exceptional.

Solar and Electric Cars UK

By Home Solar Guide Team|Updated 18 March 2026|guide

Independently written | Evidence-based | Sources cited

Solar electric car — Solar + EV = free driving. Save £400-£600/yr on fuel costs.

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Can solar panels charge an electric car?

Solar panels and electric cars are a perfect match: A 4kW solar system generates enough surplus electricity to charge an EV for 5,000-7,000 miles per year — essentially FREE driving. Annual fuel savings: £400-£600 (vs petrol at 15p/mile, solar is FREE). Best setup: solar panels + myenergi Zappi smart charger (£800-£1,000 installed). The Zappi charges your EV ONLY from surplus solar — zero grid draw. Without solar: EV charging costs 7-24p/mile. With solar: 0p/mile during the day. Even with a standard charger: time your charging for peak solar hours (10am-3pm). A 7kW charger adds 25-30 miles per hour of charging.

Frequently Asked Questions

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 pump running costs in the UK

Heat pumps use electricity at 300-400% efficiency, making them ideal partners for solar.

From our sister site Home Heat Pump Guide