Counts from public records, not a review or rating. I have no partnership with Guasti Construction; the name is as the utility recorded it.
Guasti Construction at a glance
| License lookup | California Contractors State License Board |
|---|---|
| Systems in records | 451 |
| Years in records | 2006–2023 |
| Latest record | 12/2023 |
| States | California |
| Top cities | Apple Valley, Hesperia, Victorville, Oak Hills, Phelan |
| Typical system | 6.9 kW |
| Main panel brand | CSI Solar Co., Ltd. |
| Main inverter brand | SMA America |
| With a battery | 5% |
| Leased or PPA | 1% |
Records: LBNL Tracking the Sun.
Guasti Construction systems by state
| State | Systems | Earliest record | Latest record |
|---|---|---|---|
| California | 451 | 2006 | 2023-12 |
Systems by year
Where Guasti Construction installs
California
| City | Systems | Share of company's CA systems |
|---|---|---|
| Apple Valley | 136 | 30% |
| Hesperia | 85 | 19% |
| Victorville | 49 | 11% |
| Oak Hills | 37 | 8% |
| Phelan | 34 | 8% |
| Barstow | 15 | 3% |
| Lucerne Valley | 13 | 3% |
| Helendale | 11 | 2% |
| Pinon Hills | 9 | 2% |
| Newberry Springs | 7 | 2% |
| San Bernardino | 5 | 1% |
| Riverside | 4 | 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: CSI Solar Co., Ltd. (47%), Qcells North America (26%), Trina Solar (7%), Sunergy California LLC (4%), Mitsubishi Electric (2%)
- Inverters: SMA America (72%), Enphase Energy Inc. (9%), OutBack Power Technologies, Inc. (3%), Fronius International GmbH (3%), Sol-Ark (3%)
- Leases and PPAs: 1% 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
Treepublic Solar (465), Sungenia Solar Solutions (459), Ready Home Energy (455), Sol Reliable (452), Next Door Home Construction (447), Californiasolar Innovators (446), Pacific Rim Construction Aramsolar (445), Sun Dynamics Electric (443).