Solar Panels in London
London's dense terraced and semi-detached housing means roof orientation and overshading from neighbouring buildings matter more here than almost anywhere else in the UK — but strong daytime electricity demand and high import prices keep the payback case competitive. UK Power Networks runs the capital's grid.
Solar generation in London
Averaged across London's 1 counties, a 4 kWp south-facing system generates around 4,000 kWh per year. At the April 2026 Ofgem price cap of 24.50p/kWh, that covers £980 of electricity you would otherwise buy from the grid — though Greater London runs ahead of that average, at 1000 kWh per installed kWp per year.
A typical 4 kWp system with a 5 kWh battery costs £7,000–£11,000 installed. At current energy prices, most homeowners in London break even within 8–10 years, and Smart Export Guarantee (SEG) payments on surplus exported energy reduce that further.
About London
The capital's 32 boroughs span everything from Victorian terraces in Islington to 1930s Metro-land semis in outer boroughs like Barnet and Bromley, with the Thames roughly dividing different building eras north and south. That variety means roof orientation and overshading genuinely differ street to street here more than almost anywhere else covered on this site — but London's high daytime electricity demand and import prices keep the economics strong regardless. UK Power Networks runs the entire London grid.
Counties we cover in London
Not every town in London has its own dedicated page yet — but our installer network already covers every county above. Submit a free quote request and we'll match you with MCS-certified installers local to your postcode.
Frequently asked questions — London
Do you cover the whole of London, or just certain towns?+
We cover every county in London — Greater London. None of them have a dedicated town page yet, but our installer network reaches every county regardless.
How much electricity will solar panels generate in London?+
Averaged across London's counties, a 4 kWp south-facing system generates around 4,000 kWh per year — worth roughly £980 at the April 2026 Ofgem price cap of 24.50p/kWh. Yield varies by county: Greater London sees the highest generation in the region at 1000 kWh per installed kWp per year.
Who runs the electricity network in London?+
UK Power Networks (London) runs the electricity network across the whole of London. Systems up to 3.68 kW need a G98 notification; larger arrays need G99 approval (up to 45 working days) — your MCS-certified installer files both as part of the installation, at no extra cost.
How long is the payback period for solar in London?+
A typical 4 kWp system with a 5 kWh battery costs £7,000–£11,000 installed. On London's average yield and current energy prices, most homeowners break even within 8–10 years, and Smart Export Guarantee (SEG) payments on surplus exported energy reduce that further.
Other UK regions we cover
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