Bihar and UP have very good EV Penetration. Tho a fact to be noted it is mostly E rickshaw which is driving the sale.
Surprising though you are right about E-rickshaw part and last time I mentioned that i didn't see such vehicles in south but cng-driven taxies like these were common,
And interesting thing was that in TN electricity cost is cheaper but at least in chennai it's probably well regulated. I don't know if it's a range issue or probably that they find cng as cheaper that they are using these.
One thing i really want India to do is invest in renewable energy as much as we can, Solar/Nuclear will be priority along with that in places like TN we can have wind energy. Few years back i read that India was one of the prominent states in terms of research in Thorium reactors wonder what happened to that, if we manage to pull it off then we can solve the raw material problem if any.
We should also invest in Nuclear Fusion, every major state has one such program. It's important because it will be the future, Moon has rich amount of Helium-3 and that being said i think everyone knows where i am going, we should create an entirely new high priority program for the mining in the intersteller space, at least on Moon for now. The projects started now will have the end result after decades.
USA is going back to Moon, China too, ESA will join them soon and we can't be left behind for breadcrumbs so we should make it a priority. Helium 3 can be used for nuclear fusion fuel in future.
That being said, GOI should create a national plan for creating a nationwide electric network and partner with private companies and subside them for it. Once that is done then large scale adaption of electric vehicles will be totally natural since unlike USA or even EU where infra is already matured and centered around Old age vehicles we are still adopting and building up and we are lucky.
We don't have oil and large chunk of import goes to that but we have control over energy production through renewable means which can be cheaper, we can literally solve our partial economic issues, pollution issues due to vehicles with this. And best part of the electric vehicles is that we can actually sooner or later apply some degree of ML and get something like tesla out of it (future in decades or so). This is one of the reason i am excited for Ola Scooter.
Now since i am already into my fantasyland, i should also add that i hate the botnet and that's why we should invest in creating an Opersource Software for Automobiles away from the clutches of Big Tech.