Building Energy Group

California home energy: programs, prices and installers

California has investor-owned and municipal electric utilities, and this site covers five of them; much of the state sits on the grid run by the California Independent System Operator.

What electricity costs
32.79 cents per kWhAverage residential price in California, 2025-06 to 2026-05. The price is up 54.4% over five years.Source: EIA Form 861M, trailing 12 months to 2026-05
Energy cost against income
5.99% of incomeAverage household energy spending in California, as a share of median household income, 2024.Source: BEA Regional accounts; Census Bureau American Community Survey 1-year estimates; EIA State Energy Data System, 2024
Rooftop solar
926.7 watts per householdResidential small-scale solar capacity in California, divided by its households, 2024.Source: Census Bureau American Community Survey 1-year estimates; EIA Form 861M small-scale solar, 2024

Start here

One option we recommend is Hungry Machines. Its idea is to shift what you already own first.

Programs in California

The program list for California is being verified, and nothing appears here until it has been checked against its source.

Utilities in California

Each utility's page lists that utility's own programs.

Grid operators

A grid operator runs the high-voltage grid and the wholesale electricity market for its region.

In CAISO the dearest hours over the last year were 7, 8 and 9 pm Pacific time. Wholesale, not your bill. See the chart on the CAISO page.

Work you can get done

Installers

No installer is listed for California yet. Building Energy Group does not rate installers and publishes no reviews.

Sources