While there is plenty of room for improvement in the power generation options balance, in my opinion your power generation changes go too far and doesn't really fix much. It sounds like you personally don't like renewable energy but then complain that nuclear isn't renewable now. I think that is more a philosophical issue than game balance. Some people enjoy spending their game time maintaining their machines while others enjoy doing other things. There is almost no resource in the game that isn't available in infinite (for practical purposes) quantity except for the player's time. That means many people will perceive gaining resources without player time input as "unfair". This conflicts with the "industrial" aspect of IC since in the real world we build machines to save us time. Don't forget that this is a game so is supposed to be fun and not work.
In the end the most important thing is whether your players enjoy the changes you've made on your server, but you asked for opinion so there you go.