How much can solar panels save a UK home?

Panels in Britain make electricity from daylight, not heat. A south-facing system in England makes roughly 850 to 950 kWh for every kilowatt of panels each year, and around 10 percent less in Scotland.

What decides your saving

Three things matter most: how much of your own power you use, the price you would otherwise pay for it, and what you are paid for the rest. Power you use yourself is worth the full unit price. Power you export is worth your export tariff, typically 15p a unit.

A typical example

A three-bedroom home with eight panels makes around 3,200 kWh a year. Without a battery it might use 40 percent of that directly. Add a 5 kWh battery and that share can roughly double, which is why most of our customers choose one.

How long until it pays back?

Most systems we fit pay for themselves in 7 to 11 years and keep working for 25 years or more. Our solar planner shows the figures for homes like yours.