@sanjeev kulkarni -It is good idea!But who is stopping farmers or any body from producing the elecricty from Biodisel!Some one Pillai? or some body did claim to extract oil from bushes as you say!Mr. Karunanidhi was CM of Tamilnadu then!But later it petered out!It was said to be hoax !But it will be better if farmers generate their own electricty!Why farmers even industries should also do that!