Western Sun Systems
Recently activeSolar installer based in California · installer record #13819 resolved from 244 public installation records.
Data through: California through Aug 2026 (monthly state program data).
At a glance
Western Sun Systems is a solar installer with 244 recorded installations totalling 2.1 MW, dated 2009 to 2026. All of its records are in California, where it ranks 821st of 6,163 profiled installers by volume and 1,316th of 10,840 nationally. Its median installed price for solar-only systems in 2023–2025 is $4.27/W before incentives, across 16 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 | Western Sun Systems | California median | vs state |
|---|---|---|---|---|
| 2023 | 10 | $3.73/W | $4.06/W | −8% |
| 2022 | 9 | $4.15/W | $4.11/W | +1% |
| 2021 | 7 | $3.90/W | $3.98/W | −2% |
| 2020 | 13 | $3.55/W | $3.97/W | −11% |
| 2019 | 13 | $3.60/W | $3.95/W | −9% |
| 2018 | 12 | $4.08/W | $4.01/W | +2% |
| 2017 | 12 | $3.78/W | $4.05/W | −7% |
| 2016 | 19 | $3.57/W | $4.37/W | −18% |
| 2015 | 9 | $3.68/W | $4.58/W | −20% |
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.
Equipment
Module, inverter and battery brands
| Equipment | Year | Main brands (share of systems that reported one) | Year before |
|---|---|---|---|
| Modules | 2026*6 reported | REC 50% · LONGi 33% · Solaria 17% | REC 44%2024, 9 reported |
| Inverters | 2026*6 reported | Enphase 83% · Sol-Ark 17% | Enphase 63%2024, 8 reported |
| Batteries | 20246 reported | Enphase 83% · Lithion Battery 17% | — |
Manufacturer on each recorded installation, as filed with the state program (Tracking the Sun for earlier years). Brand names are grouped by manufacturer family (e.g. Hanwha Q CELLS and Qcells North America count as Qcells). Not every state reports equipment, and battery brands come mainly from California and New Jersey. *2026 to date, from California records only.
Latest records
Most recent recorded installs
| Date | Location | Size | Price | Ownership |
|---|---|---|---|---|
| May 21, 2026 | CA | 5.7 kW | — | Host-owned · battery |
| Apr 29, 2026 | Carmel, CA | 6.1 kW | — | Host-owned · battery |
| Apr 3, 2026 | Pebble Beach, CA | 12.2 kW | — | Host-owned |
| Mar 26, 2026 | Carmel Valley, CA | 7.1 kW | — | Host-owned · battery |
| Feb 12, 2026 | Carmel, CA | 4 kW | — | Host-owned |
| Jan 26, 2026 | CA | 3.1 kW | — | Host-owned · battery |
| Nov 17, 2025 | San Ardo, CA | 20 kW | $88,000 | Host-owned |
| Nov 5, 2025 | Carmel Valley, CA | 14.4 kW | $77,000 | Host-owned |
| Mar 24, 2025 | Carmel Valley, CA | 12 kW | $60,000 | Host-owned |
| Dec 26, 2024 | Carmel Valley, CA | 7.8 kW | $35,000 | Host-owned · battery |
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Service geography
- California
- 244
Busiest cities
Record
- Installer ID
- PC-13819
- First recorded install
- Jun 11, 2009
- Last recorded install
- May 21, 2026
- Priced records
- 199
Is this your company?
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How does Western Sun Systems compare with other installers in California?
By recorded installations Western Sun Systems ranks 821st among the 6,163 installers based in California with five or more records. Its 2023–2025 solar-only median of $4.27/W is roughly in line with the California median of $3.95/W on the same basis. Its median system, 7.2 kW, is about 22% above the state median of 5.9 kW. 5% of its recorded installations are third-party owned (lease or power-purchase agreement), against 29% across California. 11% include battery storage, compared with 16% of California records. Installers of similar recorded volume in California include Project Solar (247), Power Solar Structures Construction (246) and Watts New Under The Sun (246).
How has Western Sun Systems's installation volume changed?
Western Sun Systems's earliest dated installation on record is from 2009. It has recorded installations in 17 calendar years. The busiest year was 2015, with 24 installations. 2025, its latest year with records, has 3. Its median price per watt moved from $7.10/W in 2009 to $5.00/W in 2025. The most recent recorded installation is dated May 21, 2026.
Where does Western Sun Systems install solar?
All recorded installations are in California. The cities with the most of its installations are Carmel, CA (72), Carmel Valley, CA (57), Salinas, CA (18), Pebble Beach, CA (16) and Carmel By The Sea, CA (11).
Frequently asked questions
How many solar installations has Western Sun Systems completed?
PanelCensus records 244 installations by Western Sun Systems, from Jun 11, 2009 to May 21, 2026, totalling 2.1 MW of capacity. Public reporting varies by state, so the company's true total may be higher.
What does Western Sun Systems charge for solar?
For solar-only systems installed in 2023–2025, the median reported price is $4.27/W before incentives, across 16 priced systems. The California median on the same basis is $3.95/W. Across all 199 priced systems since 2009, including battery systems, the median is $4.46/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 Western Sun Systems install solar?
All 244 recorded installations are in California, the most of them in Carmel.
Is Western Sun Systems still installing solar?
The most recent installation attributed to Western Sun Systems in the public records is dated May 21, 2026; 2025 has 3 recorded installations. Records here run California through Aug 2026 (monthly state program data), so the newest installations may not appear yet.
Does Western Sun Systems install leased or PPA solar systems?
13 recorded installations by Western Sun Systems (5%) are third-party owned — a lease or power-purchase agreement; across California the share is 29%.
Does Western Sun Systems install battery storage?
27 recorded installations by Western Sun Systems (11%) include a battery.
Related installers and places
- All solar installers in California· 6,163 profiles
- Solar installations in California· 2,408,542 records
- Project Solar· 247 installations
- Power Solar Structures Construction· 246 installations
- Watts New Under The Sun· 246 installations
- BROWER MECHANICAL CA LLC· 244 installations
- Mid Mathews Construction· 243 installations
- Ampwrx· 242 installations
Dataset updated . Sources: LBNL Tracking the Sun (through 2025), monthly state program records (California DGStats, NYSERDA, NJ Clean Energy, Illinois Shines) and permit records; installer resolved by exact-normalized name matching and, for state program records, by the systems both sources share.
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, “Western Sun Systems, solar installer (California)”, https://panelcensus.com/installers/california/western-sun-systems-13819 (data as of September 21, 2026).