One Sun
No recent recordsSolar installer based in California · installer record #8912 resolved from 31 public installation records.
At a glance
One Sun is a solar installer with 31 recorded installations totalling 3.5 MW, dated 2010 to 2014. All of its records are in California, where it ranks 2662nd of 6,220 profiled installers by volume and 4,399th of 10,536 nationally.
Track record
Install volume by year
Bars: recorded installs · right column: this installer's median $/W that year.
Latest records
Most recent recorded installs
| Date | Location | Size | Price | Ownership |
|---|---|---|---|---|
| Dec 18, 2012 | Windsor, CA | 2.8 kW | $26,200 | Host-owned |
| Oct 19, 2012 | Fresno, CA | 26.8 kW | — | — |
| Dec 16, 2011 | Napa, CA | 98.8 kW | — | — |
| Dec 16, 2011 | Boonville, CA | 48.8 kW | — | — |
| Oct 20, 2011 | Cotati, CA | 142.1 kW | — | — |
| Nov 20, 2010 | Sebastopol, CA | 524.9 kW | — | — |
| Oct 14, 2010 | Santa Rosa, CA | 68.7 kW | — | — |
| Sep 22, 2010 | Sebastopol, CA | 351.8 kW | — | — |
| May 26, 2010 | Healdsburg, CA | 47.9 kW | — | — |
See all 31 installations →searchable & filterable; export to CSV with a free account
Service geography
Busiest cities
Record
- Installer ID
- PC-8912
- First recorded install
- Mar 11, 2010
- Last recorded install
- Feb 11, 2014
- Priced records
- 1
- Also appears as
- One Sun, Inc. · One Sun Inc.
Is this your company?
Installers will be able to claim this profile, correct records and add licensing, NABCEP credentials and service details. Create a free account to be ready when claims open.
How does One Sun compare with other installers in California?
By recorded installations One Sun ranks 2662nd among the 6,220 installers based in California with five or more records. Its median system, 68.7 kW, is about 12 times the state median of 5.9 kW. 0% of its recorded installations are third-party owned (lease or power-purchase agreement), against 29% across California. 0% include battery storage, compared with 16% of California records. Installers of similar recorded volume in California include M V M Construction (31), Michael Dehority (31) and Nunez Electric (31).
How has One Sun's installation volume changed?
One Sun's earliest dated installation on record is from 2010. It has recorded installations in 3 calendar years. The busiest year was 2010, with 4 installations. 2012, its latest year with records, has 2. The most recent recorded installation is dated Feb 11, 2014. No installation in the public records is dated within the last three years.
Where does One Sun install solar?
All recorded installations are in California. The cities with the most of its installations are Sebastopol, CA (2), Boonville, CA (1), Napa, CA (1), Santa Rosa, CA (1) and Cotati, CA (1).
Frequently asked questions
How many solar installations has One Sun completed?
PanelCensus records 31 installations by One Sun, from Mar 11, 2010 to Feb 11, 2014, totalling 3.5 MW of capacity. Public reporting varies by state, so the company's true total may be higher.
What does One Sun charge for solar?
The median installed price across 1 priced systems is $9.29/W before incentives (median system 68.7 kW, about $26,200). The California median is $4.26/W.
Where does One Sun install solar?
All 31 recorded installations are in California, the most of them in Sebastopol.
Is One Sun still installing solar?
The most recent installation attributed to One Sun in the public records is dated Feb 11, 2014; 2012 has 2 recorded installations. Records reach PanelCensus months to a couple of years after installation, so recent activity may not appear yet.
Does One Sun install leased or PPA solar systems?
0 recorded installations by One Sun (0%) are third-party owned — a lease or power-purchase agreement; across California the share is 29%.
Does One Sun install battery storage?
0 recorded installations by One Sun (0%) 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 July 9, 2026 — PanelCensus refreshes it as each source publishes new records. See the methodology for how records are matched, cleaned and scored.
Cite as: PanelCensus, “One Sun, solar installer (California)”, https://panelcensus.com/installers/california/one-sun-8912 (data as of July 9, 2026).