And not every place has to do it. Most houses have plenty of room for bigger and more complex water heaters. Many of those apartment complexes that use centrali

And not every place has to do it. Most houses have plenty of room for bigger and more complex water heaters. Many of those apartment complexes that use centralized ones have room as well. The whole thread was started on the premise that "hot water is an especially hard problem for load shifting, because people have to get hot water immediately" - while the case is the opposite - because hot water is very easy to store.