Yeah, northern scandinavia has plenty of renewable energy.

As for electric heating, that is true in 1:1 heating scenarios, but i assume you guys are also using heat pumps these days, and while you still get heat "for free", it will not be anywhere as efficient as your heat pump.

Yes, it's probably peanuts in the grand scheme of things, i know our air to water heat pump in Denmark uses around 4500-5500 kWh per year, so adding another 100 kWh probably won't mean much.