No, I've got a coal-fired furnace coming.
How it works: All energy suppliers source their energy from whatever means. E.g coal, nuclear, wind etc. It goes into the National Grid, which is like a communal pot, as well all rely on it for energy.
Ecotricity only put 100% renewable energy into the pot. Also, part of my bill goes back into funding research into green energy and building new generators etc.
It's the way forward IMO.