I think we should invest lesser and lesser in finding oil and gas resources - remember these are depletable resources. To build a simple fly-over in Bombay takes about 5 years. I leave it to you to calculate how long its going to take to build this pipeline across 3 countries.
Solar power as some suggested is not viable due to limitations in technology and dependencies on nature.
I think the most viable option would be nuclear technology - specifically THORIUM based reactors. This natural resource is abundantly available in India and the by-products are not as dangerous as URANIUM based reactors.
