Counts from public records, not a review or rating. I have no partnership with Allterra Solar; the name is as the utility recorded it.
Allterra Solar at a glance
| License lookup | California Contractors State License Board |
|---|---|
| Systems in records | 3,435 |
| Years in records | 2009–2023 |
| Latest record | 12/2023 |
| States | California |
| Top cities | Santa Cruz, Aptos, Watsonville, Scotts Valley, Soquel |
| Typical system | 4.8 kW |
| Main panel brand | LG Electronics Inc. |
| Main inverter brand | Enphase Energy Inc. |
| With a battery | 9% |
| Leased or PPA | 2% |
Records: LBNL Tracking the Sun.
Allterra Solar systems by state
| State | Systems | Earliest record | Latest record |
|---|---|---|---|
| California | 3,435 | 2009 | 2023-12 |
Systems by year
Where Allterra Solar installs
California
| City | Systems | Share of company's CA systems |
|---|---|---|
| Santa Cruz | 1,492 | 43% |
| Aptos | 362 | 11% |
| Watsonville | 221 | 6% |
| Scotts Valley | 166 | 5% |
| Soquel | 142 | 4% |
| San Jose | 123 | 4% |
| Los Gatos | 114 | 3% |
| Salinas | 108 | 3% |
| Ben Lomond | 68 | 2% |
| Felton | 57 | 2% |
| Capitola | 57 | 2% |
| Monterey | 50 | 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: LG Electronics Inc. (41%), SolarWorld (18%), SunPower (16%), Panasonic Corporation of North America (11%), Alps Technology (4%)
- Inverters: Enphase Energy Inc. (76%), SMA America (8%), SunPower (8%), ABB (2%), SolarEdge Technologies Ltd. (1%)
- Leases and PPAs: 2% of its systems with known ownership were leased or under a power purchase agreement.
- Batteries: 9% 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
Ambrose Solar (3,485), West Coast Solar Norcal (3,454), A M Sun Solar (3,449), The Solar Company (3,443), Solar Universe (3,425), Energy Concepts (3,384), Alternative Energy Systems (3,333), Next Phase Electric (3,331).