I think the idea that renewables will be feasible in a country India's size with India's population, while preserving much if any natural space seems, at best, optimistic.
By all means Australia - the 6th largest country by area in the world with a population of 25ish million has the space. But India? Sure it is the 7th largest country by area, but it is less than half Australia's size, with 50-70 times the population (India's population estimates are tricky).
The scariest part of these debates is that the solution is likely energy dependence, as in countries with space - and day more sunshine - sell electricity to those without it. I don't think ANYONE likes that idea, but I can't see any way that it is feasible worldwide while maintaining each country's energy independence.