Solar panels in London and the South East
Strong yields, and high electricity use in the region makes self-consumption easy.
Yield here
980
kWh per kWp per year
A 4 kWp system
3,920
kWh generated a year
Typical payback
6.9
years, south-facing
That is about 7% below Cornwall and Devon, the sunniest part of the UK — which sounds worse than it is. A 4 kWp system here still returns roughly £806 a year and pays for itself in 6.9 years.
Work out your own roof
4 kWp is about 10 panels
50% typical, 75% with a battery
Pays for itself in
6.9 years
£806 a year in London and the South East, against about £5,600 installed. Over 25 years you would be roughly £14,544 ahead.
Generated per year
3,920 kWh
980 kWh per kWp here
Used at home
1,960 kWh
£512 off your bill
Exported
1,960 kWh
£294 earned