I just downloaded this mod because I thought it would be a nice way to generate power in the midgame before unlocking nuclear reactors. But I had to find out that from 6 tiers I only have 3. The starter (grey) one (with red and green science) then the green one (with red, green and blue science) and the last one is the blue one (with red, green, blue and purple science).

you can set the amount in the mod settings. 3 is a Standard from wich i think is suitable for most playthroughs

Ah okay, maybe you should say that in the informations tab.