Same rules as before, but now, you have to think about how long a power plant takes
to start up. A nuclear power plant takes many hours to start producing electricity.
The nuclear reaction must be started, the water must be heated to boiling, etc.
Coal Startup
Hydroelectric Startup
Natural Gas Startup
Nuclear Startup
Solar Startup
Wind Startup
So now, you have to plan ahead, turning on power plants early enough
so they come online and start generating power by the time you need them.