Space heating
Replacing a gas furnace with an electric heat pump that both heats and cools.
$119 estimated annual saving on E-ELEC
How we built this number →
The technologies
What each change is worth, and how we worked it out
We model 3 changes a California home can make. The figures below are worked for an average San Francisco single-family home, where together they come to about $1,570 a year — but that total is not spread evenly, and the detail matters more than the headline. Each page below shows the whole derivation: the consumption assumption, the efficiency assumption, the rates, and the caveats.
All technologies
Water heating
Replacing a gas storage water heater with a heat pump water heater.
$159 estimated annual saving on E-ELEC
How we built this number →Driving
Replacing a gasoline car with an electric vehicle charged at home.
$1,293 estimated annual saving on E-ELEC
How we built this number →Every rate and source behind these figures, with the date it was last checked: read the methodology.
These are averages. Yours will differ.
A personal analysis takes your postcode, the equipment you have today and how far you drive, and rebuilds all of it for your house — with an upfront cost and a payback period for each upgrade, and a second figure for what each one saves if you generate your own power.
Incentives are not counted at all, so every payback in it is the pessimistic version. Upfront costs cut the other way: they assume no electrical panel upgrade and no major duct replacement, and either one can add thousands. Pacific Gas & Electric territory today — 1,227 of California’s 2,654 postcodes.
Generated from your answers, checked by a person before it is sent. Pay what you can, including nothing.