Green energy champions, Simply Energy, offers a one-stop advice service on:

• the cheapest electricity and gas supplier(s) for your postcode area
• the cheapest suppliers of Green electricity (i.e. from renewable energy sources) for your postcode area
• switching to 100% Green electricity, if appropriate, by signing up with Good Energy

click here to read more aticles on energy sources

For further information call 0800 068 7188. If you opt for Good Energy despite it being a little more expensive, but then offset that increased cost by switching to the cheaper gas supplier Simply Energy will also find for you, Tree Spirit will plant a tree on your behalf, another individual contribution towards reducing global warming (depending on the species of tree).