What about people who have trees outside stopping the light getting in? Those who live in the ludicrous houses built with tiny windows a few decades back? The disabled who have to charge their mobility equipment and stairlifts? Those who have to have an oxygen generator running 24/7? Those who have to tumble dry because they haven't got a backyard? Those with poor sight who need a bright light to read by? Those in dodgy areas where they have to have CCTV and door security? The housebound who rely on the TV for company? Those with large families? Those with large houses?
If you made leccy cost £1 per kWh I for one would be running a genny.
Bill