Unfortunately biogas production in India is not enough to replace LPG. India needs biogas plants on small, medium and large-scales in order to make a meaningful difference in domestic cooking fuel sector.
In my opinion, the key hurdles are high cost of plants/technology, lack of skilled manpower, lack of focus on crop residues as biogas feedstock, lack of funding, lukewarm governmental support and lack of public awareness.
Hope you agree with my views.
Best wishes

Salman Zafar