So, I put down a mastercrafted boiler, which is supposed to do 30 MW of production. But then I hung up five 11MW turbines to it, all using the best pipes your mod has(A2-Unicomb, I think). The power generation monitor, however gives me a generation rate of 40MW for the turbines. Is that a bug with the ingame description?

30MW Heat, but Rensuir Turbines have a efficency above 100% ... it's unrealistic i know. if you use generators you stay below 30MW. The efficency is not shown ingame, but in the forum you can find a sheet with efficency-values.