Solar savings by UK area

Most solar sites quote a single UK-wide payback. That hides a real gap: irradiance (the sunlight your roof receives) varies by region, so identical panels in Bristol or Southampton out-generate the same panels in Manchester or Leeds by 10–20% a year. Orientation, pitch and shading still decide how close you get to the local ceiling — but the regional resource is a genuine tailwind (or headwind) worth knowing before you compare quotes. Each area page below carries its own generation figure, real neighbourhoods and council context, and an honest local payback band.