If we think that biogas is only practical for India then we should think again. Carrigbryne Farmhouse Cheese officially produces the best cheese in Ireland - their St Killian won gold in the World Cheese Awards and they came top in the Best Irish Cheese category.
Related stories: Organic cheese | Green chronicle recipes
You might think that they would be too successful to worry about the environment, but despite their awards they produce all the electricity on their farm by pumping anything left over after making the cheese into an anaerobic digester which breaks the waste down and produces bio-gas. This bio-gas is used to run a generator which produces the electricity for the farm. It's only one of four such systems in Ireland at the moment, but nevertheless, shows that renewable fuels can work in successful business too.
From: BEST OF 2008: Eco-friendy and sustainable shoes