For example water heating can be done and stored for 12 hours. In some houses, this is the main energy consumption for a family. The night hours are tipically c

For example water heating can be done and stored for 12 hours. In some houses, this is the main energy consumption for a family. The night hours are tipically cheaper due to low demand, so water heaters are programmed to work at night. But if solar panels are the energy source, you can move the heating to the middle of the day. Same goes to electric cars, but in that case there are batteries storing, so I'm not sure it counts.