Twelve months of solar on a 1930s semi, all the numbers
Off Ringley Road
4.1 kWp on a south-east facing roof, installed last September, £6,180 all in. Generated 3,340 kWh over the year. Self-consumed 58% of it, which is higher than the installer predicted because we moved the washing to the middle of the day.
Bill before: £1,410. Bill after, including export: £520. What went wrong: the first inverter failed in February and took five weeks to replace, which is the part nobody puts in the brochure.