Yeovil is a straightforward town for solar: mostly 1930s to 1970s semis and detached houses with simple roofs, and newer estates on the edges where an EV charger and a battery are often part of the brief. Sherborne, just over the Dorset line and covered as part of the same run, is a conservation-area town with older roofs where placement and all-black panels matter.
The villages of south Somerset are on rural supplies, and backup is the feature asked about first. Note that Somerset is on a different electricity network operator from Dorset and Hampshire; the paperwork differs slightly, and we handle it.