I agree, biogas is not as glamorous as other alternative energy sources; but it’s one of the most accessible and available sources. It is also the most urgently needed as source because of its effects to the environment. Sunlight does not pollute although too much heat can be bad. So is too much wind; but that comes only occasionally. Geothermal is not that common, we know. But biogas is there and everywhere, whether we want it be or not. Might as well use it for some good purpose.