I agree that the priority should be 24 hours electricity supply across India but that should not stop us from thinking and wanting fully electric car. May be it can start as a luxurious product in top tier cities and then slowly becomes affordable or people will save to invest.
I think, India is ready for electric cars and it has infrastructure ready.
Every petrol station can have electric recharging stations.
So, I don't think anything is lacking except the will of people like Elon Musk and others who already sell electric cars in USA or UK. They just need to start somewhere.
And yes, India needs loads of electricity. I prefer huge solar fields across cities.