Interim results up until June 30, 2012, show that the energy company has seen pre-tax profits increase from £0.45million in 2011, to £0.8million this year.
The results also showed Good Energy saw feed-in-tariff (FiT) customers increase by almost 37,000, to more than 39,000, giving them a 14 per cent share of the FiT market.
Juliet Davenport, Good Energy founder and chief executive, said the results were encouraging and that the company has aims to grow further, setting out a 125,000 customer goal by the end of 2015, and a 110MW generating target by 2016, which could include biomass and small scale hydro schemes.