[BeefWellington]

PG&E is basically California, where it can hit north of $0.50/kWh pretty regularly.

I think it's worth noting in this article too that the author mentions they can now heat and cool parts of their house they weren't previously, so I'm gonna guess their actual usage went up and this is basically surprise for no reason.

[mapt]

If you look at the thermal design of a house, this strategy doesn't make a lot of sense. There's no thermal barriers between rooms, and plenty of airflow if the HVAC circulation is functioning.

[dilyevsky]

Cost of 1 therm from pg&e is $2.66 so variable speed heat pump can still be cheaper