Don Barch
Residential solar installs reported mostly around Petaluma, CA
Appears in LBNL data
Public-record details
- Location
- Petaluma, CA
- Listed under
- Median more than 10% below state median, Installs reported in 2023
- Installs in this data (2019–2023)
- 42
- Median installed price
- $3.18/W (before incentives)
- Middle half of installs
- $2.62/W to $4.56/W
- California median, same period
- $4.08/W across 678,122 installs
- Difference from state median
- -22%
- Median system size
- 5.0 kW
- Last install year in data
- 2023
- Most installs in
- Petaluma (9), Sebastopol (7), Santa Rosa (6), Novato (4)
Public record, not an endorsement. This listing was compiled from public records as of 2026-10-02 and may be incomplete or out of date. Solar Price Atlas does not vet, employ, recommend or guarantee solar installers; a badge reflects only what the public record showed on that date. Confirm current details with the official record before you decide. The information on Solar Price Atlas is not a recommendation or a guarantee of anyone's work. A license record shows registration status on the date shown, not workmanship, insurance coverage at the time of your job, or suitability for your project. Confirm license, insurance and permits directly before you hire. Full disclaimer · Report an error
What these numbers are
| Install year | Installs | Median price |
|---|---|---|
| 2020 | 4 | $4.46/W |
| 2021 | 7 | $2.46/W |
| 2022 | 19 | $3.12/W |
| 2023 | 11 | $3.36/W |
Prices are the total installed price before incentives divided by system size in DC watts, for customer-owned residential systems of 1 to 25 kW reported to state programs or utilities and compiled by Lawrence Berkeley National Laboratory. The data ends with installs in 2023; prices today may differ, and 2023 may be incomplete in some states. Price depends on roof, equipment, batteries, system size and local costs, so a higher or lower median does not by itself say anything about an installer's quality. We do not rank installers; the list is ordered by number of installs reported.
- LBNL Tracking the Sun — the source data and documentation.
- U.S. DOE: homeowner's guide to going solar.