Could St Paul's Cathedral go solar?

Nobody is racking panels on the dome of St Paul's — Wren's masterpiece over the City of London is Grade I listed and about as untouchable as roofs come. But the lead roofs over the nave, choir and transepts still measure some 6,500 sq m, a theoretical 800 kWp and roughly 2,000 panels, or 670,000–820,000 kWh a year. Pure measurement, nothing more.

Roof area read from above: ~6,481 m².Imagery dated 2024-08-11.

Full methodology, assumptions and cross-checks: how we measure. Includes solar data from Google.

That was someone else's roof.

Check your own roof.

Enter your house number and postcode — we'll read your roof from above: direction, usable space and sunlight, with a Solarable Score. Free, about a minute, no account.

Check my roof