Get a better heat pump that doesn’t need aux heat? I know Mitsu “hyper heat” minisplits advertise high efficiency to -10F.
Powerwalls are overpriced for their capacity. Grid storage operators pay ~$150/kwh for batteries, then I’d guess about the same for charging/inverter electronics. I also see EV West sells 3.5kwh Samsung batteries to average consumers for $700 (I’m sure they’re charging a large markup as well).
Get a better heat pump that doesn’t need aux heat? I know Mitsu “hyper heat” minisplits advertise high efficiency to -10F.
Powerwalls are overpriced for their capacity. Grid storage operators pay ~$150/kwh for batteries, then I’d guess about the same for charging/inverter electronics. I also see EV West sells 3.5kwh Samsung batteries to average consumers for $700 (I’m sure they’re charging a large markup as well).