Ambrose Solar
Recently activeSolar installer based in California · installer record #835 resolved from 4,621 public installation records.
At a glance
Ambrose Solar is a solar installer with 4,621 recorded installations totalling 41.1 MW, dated 2017 to 2025. All of its records are in California, where it ranks 60th of 6,010 profiled installers by volume and 94th of 10,537 nationally. Its median installed price for solar-only systems in 2025 is $4.40/W before incentives, across 66 priced systems.
Track record
Install volume by year
Recorded installs per year; prices by year are in the table below.
Pricing
Price by year (solar only)
| Year | Priced systems | Ambrose Solar | California median | vs state |
|---|---|---|---|---|
| 2025 | 66 | $4.40/W | $3.29/W | +34% |
| 2024 | 66 | $3.47/W | $3.80/W | −9% |
| 2023 | 639 | $4.60/W | $4.06/W | +13% |
| 2022 | 799 | $4.37/W | $4.11/W | +6% |
| 2021 | 504 | $4.47/W | $3.98/W | +12% |
| 2020 | 329 | $4.10/W | $3.97/W | +3% |
| 2019 | 396 | $4.10/W | $3.95/W | +4% |
| 2018 | 181 | $4.10/W | $4.01/W | +2% |
| 2017 | 70 | $4.55/W | $4.05/W | +12% |
Median installed price per DC watt before incentives, systems without a battery, by the year in the public record. Years with fewer than five priced systems are left out.
Why a company's own figure can differ from this one
- Timing. These prices come from state incentive filings, published about once a year, so the latest full year here is 2025. Prices moved down in many states after 2023; a company's current quotes can be lower (or higher) than its last full year on record.
- Dates. A filing is dated when the program processed it, not when the job was sold, so jobs can land in a different month or year than in the company's own books.
- What the price includes. The filed price is the whole project as reported to the program, which can include loan dealer fees, electrical panel upgrades or roof work. A company's internal figure often leaves those out.
- Batteries. Systems flagged with a battery are excluded here; a battery the filing didn't flag can still raise a year's median.
Latest records
Most recent recorded installs
| Date | Location | Size | Price | Ownership |
|---|---|---|---|---|
| Dec 30, 2025 | Grass Valley, CA | — | — | Host-owned · battery |
| Dec 30, 2025 | Vacaville, CA | 4.3 kW | $26,582 | Host-owned |
| Dec 29, 2025 | Davis, CA | 3.7 kW | $35,088 | Host-owned · battery |
| Dec 29, 2025 | Sonoma, CA | 11.5 kW | $5,990 | Host-owned · battery |
| Dec 29, 2025 | Vallejo, CA | 7.4 kW | $58,762 | Host-owned · battery |
| Dec 29, 2025 | Petaluma, CA | 14.3 kW | $26,656 | Host-owned · battery |
| Dec 26, 2025 | Orinda, CA | — | — | Host-owned · battery |
| Dec 26, 2025 | Vallejo, CA | — | $0 | Host-owned · battery |
| Dec 24, 2025 | Lafayette, CA | 18.9 kW | $106,575 | Host-owned · battery |
| Dec 24, 2025 | Mill Valley, CA | 10.1 kW | $46,348 | Host-owned · battery |
See all 4,621 installations →searchable & filterable; export to CSV with a free account
Service geography
- California
- 4,621
Busiest cities
Record
- Installer ID
- PC-835
- First recorded install
- Apr 26, 2017
- Last recorded install
- Dec 30, 2025
- Priced records
- 4,224
Is this your company?
Owners can claim this profile free with a work email to keep the website and description current and post the company's own price figures beside ours.
If a record here isn't yours, a state is wrong, or a figure looks off, report a correction. We read every one and fix the record, usually within a few days.
How does Ambrose Solar compare with other installers in California?
By recorded installations Ambrose Solar ranks 60th among the 6,010 installers based in California with five or more records. Its 2025 solar-only median of $4.40/W is about 34% above the California median of $3.29/W on the same basis. Its median system, 7.7 kW, is about 30% above the state median of 5.9 kW. under 1% of its recorded installations are third-party owned (lease or power-purchase agreement), against 29% across California. 33% include battery storage, compared with 16% of California records. Installers of similar recorded volume in California include La Solar Group (4,712), Adt Solar (4,664) and Rockin Roofers (4,624).
How has Ambrose Solar's installation volume changed?
Ambrose Solar's earliest dated installation on record is from 2017. It has recorded installations in 9 calendar years. The busiest year was 2022, with 976 installations. 2025, its latest year with records, has 561. Its median price per watt moved from $4.55/W in 2017 to $5.01/W in 2025. The most recent recorded installation is dated Dec 30, 2025.
Where does Ambrose Solar install solar?
All recorded installations are in California. The cities with the most of its installations are Vacaville, CA (1,496), Fairfield, CA (556), Napa, CA (214), Dixon, CA (178) and Vallejo, CA (150).
Frequently asked questions
How many solar installations has Ambrose Solar completed?
PanelCensus records 4,621 installations by Ambrose Solar, from Apr 26, 2017 to Dec 30, 2025, totalling 41.1 MW of capacity. Public reporting varies by state, so the company's true total may be higher.
What does Ambrose Solar charge for solar?
For solar-only systems installed in 2025, the median reported price is $4.40/W before incentives, across 66 priced systems. The California median on the same basis is $3.29/W. Across all 4,224 priced systems since 2017, including battery systems, the median is $4.48/W. Prices are the total project cost reported to state incentive programs, divided by the system's DC watts, so they can include electrical upgrades or other work billed with the solar.
Where does Ambrose Solar install solar?
All 4,621 recorded installations are in California, the most of them in Vacaville.
Is Ambrose Solar still installing solar?
The most recent installation attributed to Ambrose Solar in the public records is dated Dec 30, 2025; 2025 has 561 recorded installations. Records reach PanelCensus months to a couple of years after installation, so recent activity may not appear yet.
Does Ambrose Solar install leased or PPA solar systems?
10 recorded installations by Ambrose Solar (under 1%) are third-party owned — a lease or power-purchase agreement; across California the share is 29%.
Does Ambrose Solar install battery storage?
1,543 recorded installations by Ambrose Solar (33%) include a battery.
Related installers and places
Dataset updated . Sources: LBNL Tracking the Sun + permit and program records; installer resolved by exact-normalized name matching.
About this data
Source: Lawrence Berkeley National Laboratory's Tracking the Sun, merged with city permit records, state incentive programs and the USGS U.S. Large-Scale Solar Photovoltaic Database / EIA-860 plant registers, as published September 21, 2026 — PanelCensus refreshes it as each source publishes new records. See the methodology for how records are matched, cleaned and scored.
Cite as: PanelCensus, “Ambrose Solar, solar installer (California)”, https://panelcensus.com/installers/california/ambrose-solar-835 (data as of September 21, 2026).