Wow, I'm pretty mad about the restriction on the Highland Power Stations. They can only be built on mountains that no one owns. That means if you unlocked Nepal through gameplay (3 settlements with 5 mountain tiles each), then you have 15 mountains that you can't place a power station on. And that unlock isn't very easy to do. I carefully filled up an entire mountainous region in order to accomplish that. When I was done, there was only one mountain that was outside my borders that I could place a power station on.
Basically, to get the most out of this improvement, you're better off not trying to do the gameplay unlock. Play as Maurya, Chola, or the friendly Ashoka instead. Then settle fresh new cities near (but not too near) mountains in the modern age. You may have to conquer and raze enemy cities in order to do this. Because you can't place them on owned mountains. You have to eliminate ownership.
I get the feeling that Firaxis only tested this civ by starting games in the Modern Age as a shortcut.
