Electricity in Sonoma County, California
1 electric utility serves homes in Sonoma County, California: PG&E. The average PG&E home paid $173.95 a month in 2025 (37.5¢ per kWh). This page covers 4 cities with 25,000 or more people in the county, from Santa Rosa to Windsor.
- 4 cities
- 1 utility
- EIA and Census data, 2025
Electric utilities in Sonoma County
EIA lists utilities by county, not by address. Your address has one utility: its name is on your bill, or type your ZIP code in the utility finder.
| Utility | Homes in California | Average bill 2025 | 1,000 kWh now |
|---|---|---|---|
| PG&EInvestor-owned utility · bill calculator | 5,055,556 | $173.95464 kWh, 37.5¢ | $407.13 |
2 smaller utilities with fewer than 1,000 homes are also listed in the county. The average bill is the 2025 average of each utility's homes that bought their power from it (EIA-861). The California average was $154.73 a month.
Cities in Sonoma County
| City | People | City-owned utility | Solar kWh a year per kW |
|---|---|---|---|
| Santa Rosa | 179,437 | — | 1,524 |
| Petaluma | 59,688 | — | 1,568 |
| Rohnert Park | 44,811 | — | 1,510 |
| Windsor | 25,864 | — | 1,573 |
A city-owned utility is a municipal utility in the county with the city's name (EIA data). Solar output: PVWatts version 8 for a south-facing roof; see the solar savings calculator.
More about California: California electric rates, all California utilities, home energy rebates and natural gas bills.
Who provides electricity in Sonoma County?
1 electric utility serves homes in Sonoma County, California: PG&E. The name of your utility is on your bill.
Which cities in Sonoma County are on this page?
Santa Rosa, Petaluma, Rohnert Park and Windsor.
Sources: EIA-861 data, 2025 (utilities by county, homes and average bills); Census Bureau city population estimates, Vintage 2025; PVWatts (National Laboratory of the Rockies).