Where Allterra Solar Ranks
Position among installers of home solar in each city, by installations in the most recent three years of records, and how Allterra Solar compares with the local market there.
Its strongest market is Santa Cruz, where it accounts for 29% of the home systems with a known installer.
| City | Rank | Installations | Local share | Price vs. local median | Leased (city average) |
|---|---|---|---|---|---|
| Santa Cruz, California | #1 | 424 | 29% | about the same | 0% (13%) |
| Watsonville, California | #2 | 87 | 12% | about the same | 0% (35%) |
What Allterra Solar Installs
- Typical system size
- 5.3 kW
- Leased or on a PPA
- 0%
- Installed with a battery
- 26%
Mostly sells systems the homeowner owns, paid in cash or with a loan.
Panel brands
- Panasonic (65%)
- REC Group (14%)
- LG Electronics (10%)
Inverter brands
- Enphase Energy (92%)
- Enphase Energy (5%)
- Tesla (2%)
Allterra Solar Prices Compared With the State
Median price per watt of systems the homeowner bought outright, before incentives.
| State | Allterra Solar | State median | Difference |
|---|---|---|---|
| California (2023–2025) | $4.87/W | $4.25/W | 15% higher |
Home Installations per Year
Records for the most recent year can be incomplete while utilities finish reporting.
Where Allterra Solar Installs Most
| City | Installations (2023–2025) |
|---|---|
| Santa Cruz, CA | 424 |
| Aptos, CA | 118 |
| Watsonville, CA | 87 |
| Scotts Valley, CA | 51 |
| Soquel, CA | 45 |
| Hollister, CA | 28 |
| San Jose, CA | 23 |
| Monterey, CA | 20 |
| Salinas, CA | 17 |
| Boulder Creek, CA | 15 |
| Capitola, CA | 15 |
| Los Gatos, CA | 15 |
| Ben Lomond, CA | 14 |
| Felton, CA | 14 |
| Carmel, CA | 9 |
Specialist Rankings
Where Allterra Solar ranks among the companies that install the most systems with a battery or with a given inverter brand.
- Solar Battery Installers in Santa Cruz, CA: #1 (92 systems)
- Solar Battery Installers in Watsonville, CA: #5 (18 systems)
Other Top Installers in Santa Cruz
The companies ranked next to Allterra Solar in Santa Cruz, by home installations in 2023–2025.
| Company | Installations | Median price | Leased / PPA |
|---|---|---|---|
| Sandbar Solar | 176 | $4.65/W | 0% |
| Sunrun | 147 | $4.52/W | 79% |
| Solar Technologies | 87 | $4.79/W | 1% |
| Tesla | 69 | $4.82/W | 0% |
| Day One Solar | 55 | $5.42/W | 0% |
| Exo Energy | 27 | — | 67% |
Allterra Solar: Common Questions
Is Allterra Solar still in business?
Allterra Solar was still installing home solar in 2025, the latest year in the public records we use, and it is not on our list of installers that closed or went bankrupt. Records lag a year or two, so confirm before you sign: its California license (CSLB #847973) shows whether it is active, and recent Google reviews show whether it is still answering customers.
Does Allterra Solar lease solar panels or sell them?
0% of its home systems in 2023–2025 were leased or on a power purchase agreement, and 100% were bought by the homeowner. Mostly sells systems the homeowner owns, paid in cash or with a loan.
What solar panels and inverters does Allterra Solar install?
Panels: Panasonic (65%), REC Group (14%) and LG Electronics (10%). Inverters: Enphase Energy (92%), Enphase Energy (5%) and Tesla (2%). Shares of its home systems in 2023–2025 with a known brand.
How much does Allterra Solar charge for solar?
In California (2023–2025), homeowners who bought a system from Allterra Solar paid a median of $4.87/W before incentives — 15% higher than the state median of $4.25/W. For its typical 5.3 kW system, that is about $26,000. By city: about the same as the Santa Cruz median; about the same as the Watsonville median.
Does Allterra Solar install solar batteries?
26% of its home systems in 2023–2025 included a battery. It ranks among the top battery installers in Santa Cruz, CA, Watsonville, CA.
Where does Allterra Solar install solar?
Most of its recent work is in Santa Cruz (424), Aptos (118), Watsonville (87), Scotts Valley (51) and Soquel (45). It is ranked in 2 cities in California.
Before You Sign With Allterra Solar
- California license: CSLB #847973 (A, B, C-46), issued 10/08/2004, registered to ALLTERRA SOLAR in Santa Cruz. It appears in the state's list of active licenses. Check its current status on the CSLB site.
- Reviews and contact details: call (831) 425-2608 (the number on its license) or see Allterra Solar on Google Maps, where recent reviews tell you more than any ranking.
- Quotes: get at least three, and compare price per watt, equipment brands and the workmanship warranty — not just the monthly payment.
Compare Allterra Solar with other installers
The Santa Cruz ranking puts Allterra Solar next to the other companies that install the most there, with each one's price and leasing share.
Top solar installers in Santa Cruz →Where These Numbers Come From
Source: Tracking the Sun, Lawrence Berkeley National Laboratory (2026 edition), licensed CC BY 4.0. In New York and New Jersey, recent years come from the state programs' own records (NYSERDA and New Jersey's Clean Energy Program). Company names were standardized and closures checked against news reports by Solar Power Fix. More about our methodology.