Even at a domestic scale you can install solar and batteries for your household/heating/car usage -- assuming you have the roof space -- be self sufficent 10 mo

Even at a domestic scale you can install solar and batteries for your household/heating/car usage -- assuming you have the roof space -- be self sufficent 10 months a year, and have a payack time of about 12 years last time I looked. The other 2 months a year sure, you've got either grid power or an off grid oil/gas generator.