> Except it turns out we don't use much energy at night... Well, people don't but heating does. It is quite popular to produce heat for floor heating during th

> Except it turns out we don't use much energy at night... Well, people don't but heating does. It is quite popular to produce heat for floor heating during the night (because there are tariffs where night energy is cheaper) and disable it at (part)day - floor heating has large inertia and keeps the house (or at least feet) warm for longer. Solar has this issue, that a lot of people mount them and the highest amount of electricity produced is during the same period of time and during summer, where you have the most production you don't need heating - some use air conditioning, but it is not necessary in cooler parts of the world (and it uses less energy than heating).