Allterra Solar
Recently activeSolar installer based in California · installer record #723 resolved from 4,226 public installation records.
Data through: California through Aug 2026 (monthly state program data).
At a glance
Allterra Solar is a solar installer with 4,226 recorded installations totalling 23.3 MW, dated 2009 to 2026. All of its records are in California, where it ranks 71st of 6,163 profiled installers by volume and 110th of 10,840 nationally. Its median installed price for solar-only systems in 2025 is $4.92/W before incentives, across 66 priced systems.
Track record
Install volume by year
Recorded installs per year; prices by year are in the table below.
Pricing
Price by year (solar only)
| Year | Priced systems | Allterra Solar | California median | vs state |
|---|---|---|---|---|
| 2025 | 66 | $4.92/W | $3.29/W | +50% |
| 2024 | 237 | $4.88/W | $3.80/W | +28% |
| 2023 | 355 | $4.77/W | $4.06/W | +17% |
| 2022 | 291 | $4.43/W | $4.11/W | +8% |
| 2021 | 232 | $4.24/W | $3.98/W | +7% |
| 2020 | 247 | $4.44/W | $3.97/W | +12% |
| 2019 | 291 | $4.41/W | $3.95/W | +12% |
| 2018 | 258 | $4.27/W | $4.01/W | +6% |
| 2017 | 258 | $4.27/W | $4.05/W | +5% |
| 2016 | 383 | $4.63/W | $4.37/W | +6% |
| 2015 | 176 | $4.55/W | $4.58/W | −1% |
Median installed price per DC watt before incentives, systems without a battery, by the year in the public record. Years with fewer than five priced systems are left out.
Why a company's own figure can differ from this one
- Timing. These prices come from state incentive filings, published about once a year, so the latest full year here is 2025. Prices moved down in many states after 2023; a company's current quotes can be lower (or higher) than its last full year on record.
- Dates. A filing is dated when the program processed it, not when the job was sold, so jobs can land in a different month or year than in the company's own books.
- What the price includes. The filed price is the whole project as reported to the program, which can include loan dealer fees, electrical panel upgrades or roof work. A company's internal figure often leaves those out.
- Batteries. Systems flagged with a battery are excluded here; a battery the filing didn't flag can still raise a year's median.
Equipment
Module, inverter and battery brands
| Equipment | Year | Main brands (share of systems that reported one) | Year before |
|---|---|---|---|
| Modules | 2026*134 reported | REC 38% · JA Solar 21% · Panasonic 15% · LG 10% | REC 50%2025, 228 reported |
| Inverters | 2026*137 reported | Enphase 91% · Tesla 4% · SunPower 3% · ABB / FIMER 1% | Enphase 90%2025, 209 reported |
| Batteries | 2026*77 reported | Enphase 52% · Tesla 27% · FranklinWH 21%Main brand changed from Tesla (2025) | Tesla 58%2025, 150 reported |
Manufacturer on each recorded installation, as filed with the state program (Tracking the Sun for earlier years). Brand names are grouped by manufacturer family (e.g. Hanwha Q CELLS and Qcells North America count as Qcells). Not every state reports equipment, and battery brands come mainly from California and New Jersey. *2026 to date, from California records only.
Latest records
Most recent recorded installs
| Date | Location | Size | Price | Ownership |
|---|---|---|---|---|
| Aug 31, 2026 | Monterey, CA | 5 kW | — | Host-owned · battery |
| Aug 28, 2026 | Salinas, CA | — | — | Host-owned · battery |
| Aug 21, 2026 | Ben Lomond, CA | — | — | Host-owned · battery |
| Aug 20, 2026 | Pacific Grove, CA | 5 kW | — | Host-owned · battery |
| Aug 20, 2026 | Aptos, CA | 4 kW | — | Third-party · battery |
| Aug 17, 2026 | Santa Cruz, CA | 7.1 kW | — | Host-owned |
| Aug 17, 2026 | Soquel, CA | — | — | Host-owned · battery |
| Aug 14, 2026 | Corralitos, CA | 5.9 kW | — | Host-owned · battery |
| Aug 13, 2026 | Boulder Creek, CA | 3.3 kW | — | Host-owned · battery |
| Aug 7, 2026 | Santa Cruz, CA | 7.9 kW | — | Host-owned · battery |
See all 4,226 installations →searchable & filterable; export to CSV with a free account
Service geography
- California
- 4,226
Busiest cities
Record
- Installer ID
- PC-723
- First recorded install
- Sep 22, 2009
- Last recorded install
- Aug 31, 2026
- Priced records
- 3,362
Is this your company?
Owners can claim this profile free with a work email to keep the website and description current and post the company's own price figures beside ours.
If a record here isn't yours, a state is wrong, or a figure looks off, report a correction. We read every one and fix the record, usually within a few days.
How does Allterra Solar compare with other installers in California?
By recorded installations Allterra Solar ranks 71st among the 6,163 installers based in California with five or more records. Its 2025 solar-only median of $4.92/W is about 50% above the California median of $3.29/W on the same basis. Its median system, 4.9 kW, is about 17% below the state median of 5.9 kW. 2% of its recorded installations are third-party owned (lease or power-purchase agreement), against 29% across California. 17% include battery storage, compared with 16% of California records. Installers of similar recorded volume in California include Solar Universe (4,397), A M Sun Solar (4,287) and Sonray Construction (4,257).
How has Allterra Solar's installation volume changed?
Allterra Solar's earliest dated installation on record is from 2009. It has recorded installations in 17 calendar years. The busiest year was 2023, with 427 installations. 2025, its latest year with records, has 232. Its median price per watt moved from $6.00/W in 2009 to $7.14/W in 2025. The most recent recorded installation is dated Aug 31, 2026.
Where does Allterra Solar install solar?
All recorded installations are in California. The cities with the most of its installations are Santa Cruz, CA (1,720), Aptos, CA (431), Watsonville, CA (280), Scotts Valley, CA (201) and Soquel, CA (172).
Frequently asked questions
How many solar installations has Allterra Solar completed?
PanelCensus records 4,226 installations by Allterra Solar, from Sep 22, 2009 to Aug 31, 2026, totalling 23.3 MW of capacity. Public reporting varies by state, so the company's true total may be higher.
What does Allterra Solar charge for solar?
For solar-only systems installed in 2025, the median reported price is $4.92/W before incentives, across 66 priced systems. The California median on the same basis is $3.29/W. Across all 3,362 priced systems since 2009, including battery systems, the median is $4.62/W. Prices are the total project cost reported to state incentive programs, divided by the system's DC watts, so they can include electrical upgrades or other work billed with the solar.
Where does Allterra Solar install solar?
All 4,226 recorded installations are in California, the most of them in Santa Cruz.
Is Allterra Solar still installing solar?
The most recent installation attributed to Allterra Solar in the public records is dated Aug 31, 2026; 2025 has 232 recorded installations. Records here run California through Aug 2026 (monthly state program data), so the newest installations may not appear yet.
Does Allterra Solar install leased or PPA solar systems?
83 recorded installations by Allterra Solar (2%) are third-party owned — a lease or power-purchase agreement; across California the share is 29%.
Does Allterra Solar install battery storage?
738 recorded installations by Allterra Solar (17%) include a battery.
Related installers and places
- All solar installers in California· 6,163 profiles
- Solar installations in California· 2,408,542 records
- Solar Universe· 4,397 installations
- A M Sun Solar· 4,287 installations
- Sonray Construction· 4,257 installations
- Precis Solar· 4,170 installations
- Alternative Energy Systems· 4,053 installations
- Green Convergence· 4,042 installations
Dataset updated . Sources: LBNL Tracking the Sun (through 2025), monthly state program records (California DGStats, NYSERDA, NJ Clean Energy, Illinois Shines) and permit records; installer resolved by exact-normalized name matching and, for state program records, by the systems both sources share.
About this data
Source: Lawrence Berkeley National Laboratory's Tracking the Sun, merged with city permit records, state incentive programs and the USGS U.S. Large-Scale Solar Photovoltaic Database / EIA-860 plant registers, as published September 21, 2026 — PanelCensus refreshes it as each source publishes new records. See the methodology for how records are matched, cleaned and scored.
Cite as: PanelCensus, “Allterra Solar, solar installer (California)”, https://panelcensus.com/installers/california/allterra-solar-723 (data as of September 21, 2026).