How many kWh does one panel produce per day?

Average: 1.0-1.2 kWh/day. Summer: 2.0-2.5 kWh. Winter: 0.2-0.4 kWh. Depends on location, direction, and weather.

How much money does one panel save?

~£93-£103/year at current electricity rates (26.32p/kWh). At £200-£350 per panel installed, payback per panel is 2-3.5 years.

How Much Does One Panel Produce?

By Home Solar Guide Team|Updated 20 October 2026|educational

Independently written | Plain-English guide

Single solar panel output — One 400W panel: ~400 kWh/year. Enough to run a fridge or power all your phone charging.

What would this actually cost at your home?

Installed prices vary widely by roof, access and region. Get an installed price for your property from MCS-certified installers.

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What would this actually cost at your home?

Installed prices vary widely by roof, access and region. Get an installed price for your property from MCS-certified installers.

Get an Installed Price

How much electricity does one solar panel make?

One 400W solar panel produces approximately 380-420 kWh per year in the UK (south-facing). Per day: 1.0-1.2 kWh average. Summer peak: 2.0-2.5 kWh/day. Winter low: 0.2-0.4 kWh/day. That single panel saves approximately £93-£103 per year at 26.32p/kWh — enough to pay for itself in under 3 years. 10 panels = 4kW system = ~4,000 kWh/year = matching average UK household consumption.