Interesting. In Poland, where I live, I researched this recently, for my mother's house - and it won't work. The heat is needed from October until April, and mo

Interesting. In Poland, where I live, I researched this recently, for my mother's house - and it won't work. The heat is needed from October until April, and most of that time solar panels generate close to zero electricity. In the end, my mother will have a significant surplus of power during summer (even with storage), and will still need to heat up house in winter using gas, or grid electricity (coal :/). I read about some Nordic researchers developing long-term heat storage, which would be way better.