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hugo7
Meh. Tech wazzocks inventing yet more stupid gimmicky solutions when we already know exactly what to do and could do it now.
If we just insulated to passive house standards an average 100m2 British house would need about 1500kwh a year to heat it. With a modern air-water heat pump that’ll be less than 500kwh of electric burned. <£200 a year at today’s mega high prices.