House that is almost energy independent, and is designed for a temperate climate. And some musings on ammonia and nuclear power.
I noticed that photovoltaics are really cheap now. 19.8 kW of peak power would cost around 20 000 PLN (1 USD is equal to 3.65 PLN when I am writing this). Array of 44 of those, with peak power of 475 W each, which actually will be closer to 450 W, because of marketing and degradation progressing with time, will produce aforementioned amount of total peak electrical power. I accounted only for the initial fast degradation, it will slowly get even worse. Appropriate hybrid inverter costs 11 000 PLN.