If we just went based on the political message in the past then Germany could just use that massive amount of solar and wind they have been subsidizing for the last few decades, and for heating they could simply use that green hydrogen. Both of those were supposed to be both cheaper than any other for of energy. More realistically, this is a time where most countries in EU should be scrambling to throw money at new e…
Most off grid systems have some sort of generator for the long stretches of cloudy days, and in a cold climate, pretty much everyone uses fossil fuels for heating off grid due to the energy density, reliability, and low cost.
Anything else starts being really cost prohibitive if you do the math on ‘I get X amount of heat during these long tail scenarios or the pipes burst/I freeze’.
Physics is a bitch.