Maybe you're right, and 20 MW are nothing in mid-late game. But that wasn't my question. I'm trying to understand why a simple cargohold with a small crane needs as much power as 5 Smelters. That's completly unrealistic.
Yes I can run my all my heaters in my flat at max temperature. But why doing so if it's not cold? Just because I'm rich and don't care?
So I still think this is not well balanced at all. And you can't compare this with conveyors, since they don't need any power to run, right?
It's no criticism, it's just an feedback. The game makes fun, I like it.