For Power Generation, BIO GAS is better if it can burn all the Methane gas it is producing. All the Cows crap and Pigs must be efficiently collected so as to utilize it instead of wasted at the expense of the environment..
ginagawa na eto ng mga new piggeries and farm and even some poultry farms.... ang cattle/carabao hindi pa kasi kauti pa at mas gusto nila itong organic fertilizer.