Are Solar Panels Worth It in London?

Yes — London gets around 1,150 kWh of solar irradiation per square metre per year. That's not far off the south coast, and comfortably enough for solar to pay back on the vast majority of London homes.

What a typical London install produces

A 4 kWp south-facing system on a London roof generates roughly 3,600–3,900 kWh per year. With current electricity prices (around 27p/kWh), that's £950–£1,050 of avoided energy costs annually if you use most of it yourself.

East vs west facing

East/west split arrays lose only 15–20% versus pure south. In dense London terraces where the roof faces the "wrong" way, split arrays still stack up financially.

Battery storage in London

Because London electricity is expensive and export tariffs are low, a battery is almost always worth adding. It lets you use evening TV, cooking and EV charging on daytime solar.

Planning permission

Standard rooftop solar is permitted development in most of London. Conservation areas and listed buildings need consultation — we handle this for you.

Want a London-specific quote? We'll survey your roof, model your generation and give you a fixed price.