Hi there, in going for 1600x900 resolution the window leaves a fair amount of black box (see below).
Also, don't know if it's just as far as the game got, but clicking next at this point doesn't seem to do anything.
Otherwise, I can see the potential, would be interesting to see how you introduce ideas like balancing the system with natural gas plants (OCGT/CCGT), ramp rates, battery storage, biomass, onshore/offshore wind etc