Solar panels in Central Scotland
Glasgow and Edinburgh — lower yields, though longer summer days help more than people expect.
Yield here
820
kWh per kWp per year
A 4 kWp system
3,280
kWh generated a year
Typical payback
8.3
years, south-facing
That is about 22% below Cornwall and Devon, the sunniest part of the UK — which sounds worse than it is. A 4 kWp system here still returns roughly £674 a year and pays for itself in 8.3 years.
Work out your own roof
4 kWp is about 10 panels
50% typical, 75% with a battery
Pays for itself in
8.3 years
£674 a year in Central Scotland, against about £5,600 installed. Over 25 years you would be roughly £11,255 ahead.
Generated per year
3,280 kWh
820 kWh per kWp here
Used at home
1,640 kWh
£428 off your bill
Exported
1,640 kWh
£246 earned