Question 1

How many solar panels can fit on my roof?

Accepted Answer

A standard UK roof (30-40m²) fits 12-18 solar panels (400W each), giving a 4.8-7.2kW system.

Question 2

What roof direction is best for solar panels in the UK?

Accepted Answer

South-facing roofs generate the most solar energy. South-east and south-west are 95% as effective.