Rematog wrote: But the cost of running it is a very important question.
What if you could make power with only the power of your mind… no fuel, no capital…free power!
If 5 people, without requiring any capital equipmemt, no parts, no fuel, nothing but the power of their minds, could stare at a transmission line and make 5 MW appear…..
It would not be cheap power if they were paid a good union wage.
I love this thought experiment and the surprising conclusion!
A couple of hundred years ago most of our energy needs were provided by humans and some horses and oxen at a rate of far less than 1 kW. Today a rate of 1 MW is barely competitive.
We have come a long way, both in ways of producing cheap energy and also in our rapidly increasing thirst for energy.