All non-oil based alternatives are either finite or very expensive or not reliable. GEO-THERMAL is something an energy source that has revolutionizing potential, drilling into the ground and tapping into the heat can become unlimited and clean source available 27x7. Drilling technology is quite good these days, pumping water through one hole and using the exiting hot water through the other can generate electricity. India needs to put all IITs and other research intuitions on priority.