> six hours after sunset there isn't enough heat to keep the turbines going Note that's when running at "maximum power". You don't have to extract the heat tha

> six hours after sunset there isn't enough heat to keep the turbines going Note that's when running at "maximum power". You don't have to extract the heat that fast. Given a hypothetical and utterly irresponsible grid supplied solely by this design, you'd overbuild to the point that you'd have enough stored heat to last all night.