I have been with GreenEnergy for about five years now, purely from an ethical point of view. They are one of the few companies that actually supply 100% renewable energy, and not use the renewable electricity they sell as a ‘green’ tariff towards meeting their own Renewables Obligation like the 'big 6' do. They also offer shares in their company after you have been with them for three years. They are usually the last to increase prices and the first to reduce them, acting quicker to wholesale prices and therefore benefiting customers more quickly than the big companies.
When I moved home, I asked them to supply my new address too. They were the only company out of gas, electric, telephone, bank, mobile, broadband etc that I did not have to contact after moving because they had fouled up changing my address, failing to record meter readings etc etc that other companies did. They were impressive simply because they did the basics 100% right, which clearly was not possible by any other company. GreenEnergy are prompt to answer the telephone, speak English and not over the top of you. An English company that if you care about where your electricity comes from you should check them out.
To reply as a company, please sign up here.