To your point about "Electrifying everything will cost a lot of money ...", solar cells are at about $0.30 / W (used) and it's either possible or will be possib

To your point about "Electrifying everything will cost a lot of money ...", solar cells are at about $0.30 / W (used) and it's either possible or will be possible soon to get LiFePO4 batteries at $0.05 / Wh. For a 30KWh home (the US average), that system will cost the consumer under $3k (assuming 8 hour days of sun, just in hardware, neglecting incidentals and labor, etc.). The average consumer in the US spends about $1-$1.5k per year on electricity. So building a solar battery system, in theory, would make its money back in 2-3 years. There might be more savings depending on the area and incentives.