I love this game so far and it has huge potential. I have a few suggestions to add.
-Pay money for energy efficient campaigns. I.e. pay some amount of money to reduce total power demand by customers.
-Tidal power, have a beach near by and the ability to buy tidal power plants.
-Upgradeable power plants of all types; pay money for more output.
- Track the total energy input and use so at the end of the game you can see the data, win or lose.
-Keep adding more levels and different scenarios!
Thanks!
Andrew