Counts from public records, not a review or rating. I have no partnership with Solarunion; the name is as the utility recorded it.
Solarunion at a glance
| License lookup | California Contractors State License Board |
|---|---|
| Systems in records | 1,129 |
| Years in records | 2002–2023 |
| Latest record | 12/2023 |
| States | California, Texas |
| Top cities | San Francisco, Oakland, Berkeley, San Jose, Stockton |
| Typical system | 5.1 kW |
| Main panel brand | Trina Solar |
| Main inverter brand | SMA America |
| With a battery | 11% |
| Leased or PPA | 3% |
Records: LBNL Tracking the Sun.
Solarunion systems by state
| State | Systems | Earliest record | Latest record |
|---|---|---|---|
| California | 1,126 | 2002 | 2023-12 |
| Texas | 3 | 2023 | 2023-07 |
Systems by year
Where Solarunion installs
California
| City | Systems | Share of company's CA systems |
|---|---|---|
| San Francisco | 359 | 32% |
| Oakland | 91 | 8% |
| Berkeley | 51 | 5% |
| San Jose | 30 | 3% |
| Stockton | 17 | 2% |
| San Rafael | 14 | 1% |
| Mill Valley | 14 | 1% |
| Redwood City | 13 | 1% |
| San Mateo | 13 | 1% |
| Concord | 12 | 1% |
| Fremont | 12 | 1% |
| Napa | 11 | 1% |
Texas
| City | Systems | Share of company's TX systems |
|---|
Source: LBNL Tracking the Sun, residential systems in utility interconnection records. City as the utility recorded it. How I count.
Equipment and ownership
- Panels: Trina Solar (27%), SANYO ELECTRIC CO LTD OF PANASONIC GROUP (25%), Panasonic Corporation of North America (17%), LG Electronics Inc. (9%), SolarJuice Technology Inc. (5%)
- Inverters: SMA America (28%), SolarEdge Technologies Ltd. (28%), ABB (22%), Enphase Energy Inc. (2%), SunPower (0%)
- Leases and PPAs: 3% of its systems with known ownership were leased or under a power purchase agreement.
- Batteries: 11% of its systems had a battery on record.
Offered a lease or PPA? Read lease vs buy first.
Before you sign
- License. Look the company up with the California Contractors State License Board and check the name on the contract matches the license.
- Run the quote through the quote checker and the list in how to check a solar quote.
Companies of similar size in California records
Aikyum (1,134), Highlight Solar (1,134), G C Electricsolar (1,133), All Bay Solar Construction (1,131), American Solar Advantage (1,122), Cinnamon Solar (1,113), Quantum Solar Designs (1,113), Evans Energy (1,111).