Nice work kevin, it's looking good.
Regarding the current system of power/electricity, i don't think it properly highlights our dependency on it. In game at the moment, you build a factory you got more shields. you get electricity, you get some more shields. Really, there isn't all that much motivation to build power plants, and i often find myself waiting extended periods of time until i can i can build a power plant without an unhealthiness bonus.
Compare this to modern life. EVERYTHING uses electricity. There are multiple power plants in, well, i imagine pretty much every medium-to-large city in the developed world. Electricity gets traded (in australia it's just between states, but again, i imagine in europe this could/would happen between countires). Power outages mean unproductiveness and unhappiness until it's fixed, no matter how big or small the outage is. Power really isn't done justice in Civ atm
EDIT: A possible system (don't ask me how, i'm no coder


) would be, as ETM (that is one
snappy nickname) suggested, to have power plants create the resource electricity, which in turn can be applied to buildings for bonuses.
Ooooh! The modern age windmill (clearly modelled on wind power plants), could produce an electricity resource