Thats completely beside the point, renewable is more expensive than wood. Also, while renewables might be cheaper in the long run, initial costs are very high.

Thats completely beside the point, renewable is more expensive than wood. Also, while renewables might be cheaper in the long run, initial costs are very high. And power mix in central europe, which you feed into your heat pump, is largely coal. Photovoltaics in winter are only a very small part of the mix. Wind depends on the weather pattern, but around here cold weather usually brings calm. Winter is also dry season, so hydro is lacking as well. So your typical heat pump will be far from emission free.