As well as using wind turbines to provide electricity, and straw-burning plants to provide heating, some islanders have solar panels on their roofs and others warm their homes using geothermal energy and the heat given off by fresh cow's milk.

CNN: Striking a blow for wind power

The Liverpool cow houses were home to over 4, 000 cows, providing local people with fresh milk and cheese.

BBC: Life as a Liverpool urban cowboy