Or, alternatively, a handful of gas plants working at this load like peaking power plants work now. So, for 72 hours or so, where the full need isn't met, we ha

Or, alternatively, a handful of gas plants working at this load like peaking power plants work now. So, for 72 hours or so, where the full need isn't met, we have some very expensive alternatives. According to wikipedia, some peaker plants may work as little as a few hours a year. Or, we have a set of solar thermal energy power plants that can function as peakers down the road.