Mining bitcoin at home in Europe, priced with the real household tariffs (Eurostat, all taxes) and live BTC/difficulty:
France 0.1523 EUR/kWh -> -3.80 EUR/day
Poland 0.2124 -> -6.68
Germany 0.2378 ->...
20 w/th describes s19-class gear. a s21 pro, which is one of my own rigs, runs close to 15 w/th, about 25 percent less power for the same hash. worth rerunning your table at that number since it moves every line, and the newest hardware clears a much easier bar than this one does.