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.

Sizing solar around an EV or heat pump?

Both change your consumption profile substantially, which changes the system you need. Get a size and price built around your actual load.

Size a System for My Home

Free calculator. See your result before giving any details.

Sizing solar around an EV or heat pump?

Both change your consumption profile substantially, which changes the system you need. Get a size and price built around your actual load.

Size a System for My Home

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