Good Energy has topped the Which? Energy Company Satisfaction Survey, for the third time in the last four years.
The south west green electricity supplier is highly commended for its customer service and is the only company awarded the top five-star rating for energy efficiency advice.
Good Energy owns the Delabole wind farm in north Cornwall where it has pioneered the UK’s first local electricity tariff.
The company recently announced plans for a combined wind and solar farm near Week St Mary in north Cornwall, which could power up to 20,000 homes.