The UK may not the sunniest place in Europe but as Good Energy generator David Humphrey says of the photovoltaic (PV) panels on the roof of his West London home; “as long as it’s bright outside, there are enough photons buzzing around to get them excited.”

As well as supporting hundreds of domestic generators like the Humphreys, we buy electricity from a number of larger installations like the one at St Aldhelm's Church in London and housing association Peabody.