Perhaps they don't turn off but merely down? Is that a day? Is there even such a thing as different levels of operation? Even if not a day, maybe still not res

Perhaps they don't turn off but merely down? Is that a day? Is there even such a thing as different levels of operation? Even if not a day, maybe still not responsive enough. Then again, maybe it gets you close enough that now you only need a smaller more doable version of some otherwise unrealistic gap filler like batteries or thermal mass or gravity mass etc.