Counts from public records, not a review or rating. I have no partnership with Guyou Construction; the name is as the utility recorded it.
Guyou Construction at a glance
| License lookup | California Contractors State License Board |
|---|---|
| Systems in records | 1,340 |
| Years in records | 2014–2023 |
| Latest record | 12/2023 |
| States | California |
| Top cities | San Diego, Corona, Mission Viejo, Riverside, Oceanside |
| Typical system | 7.1 kW |
| Main panel brand | Qcells North America |
| Main inverter brand | Enphase Energy Inc. |
| With a battery | 5% |
| Leased or PPA | 4% |
Records: LBNL Tracking the Sun.
Guyou Construction systems by state
| State | Systems | Earliest record | Latest record |
|---|---|---|---|
| California | 1,340 | 2014 | 2023-12 |
Systems by year
Where Guyou Construction installs
California
| City | Systems | Share of company's CA systems |
|---|---|---|
| San Diego | 93 | 7% |
| Corona | 40 | 3% |
| Mission Viejo | 37 | 3% |
| Riverside | 28 | 2% |
| Oceanside | 28 | 2% |
| Hesperia | 24 | 2% |
| Chula Vista | 23 | 2% |
| Apple Valley | 23 | 2% |
| San Bernardino | 21 | 2% |
| Escondido | 20 | 1% |
| Long Beach | 19 | 1% |
| Murrieta | 19 | 1% |
Source: LBNL Tracking the Sun, residential systems in utility interconnection records. City as the utility recorded it. How I count.
Equipment and ownership
- Panels: Qcells North America (26%), CSI Solar Co., Ltd. (22%), REC Solar (21%), Aptos Solar Technology LLC (8%), LG Electronics Inc. (4%)
- Inverters: Enphase Energy Inc. (77%), SolarEdge Technologies Ltd. (17%), Northern Electric & Power Co. Ltd (3%), Northern Electric & Power (1%), Northern Electric & Power Co., Ltd (0%)
- Leases and PPAs: 4% of its systems with known ownership were leased or under a power purchase agreement.
- Batteries: 5% 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
Ks Electric (1,371), Synergy Power Ca (1,364), Clean Energy Solution (1,362), Skyline Smart Energy (1,355), Sol Nova Electric (1,323), All Electric Solar (1,292), Sun Light Power (1,278), Sunwork Renewable Energy (1,260).