Quantum Solar Designs
Recently activeSolar installer based in California · installer record #9789 resolved from 1,244 public installation records.
At a glance
Quantum Solar Designs is a solar installer with 1,244 recorded installations totalling 9.6 MW, dated 2012 to 2025. All of its records are in California, where it ranks 214th of 6,010 profiled installers by volume and 355th of 10,537 nationally. Its median installed price for solar-only systems in 2023–2025 is $3.70/W before incentives, across 161 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 | Quantum Solar Designs | California median | vs state |
|---|---|---|---|---|
| 2025 | 5 | $4.08/W | $3.29/W | +24% |
| 2024 | 9 | $3.70/W | $3.80/W | −3% |
| 2023 | 147 | $3.70/W | $4.06/W | −9% |
| 2022 | 139 | $3.38/W | $4.11/W | −18% |
| 2021 | 106 | $3.20/W | $3.98/W | −20% |
| 2020 | 104 | $3.53/W | $3.97/W | −11% |
| 2019 | 80 | $3.69/W | $3.95/W | −7% |
| 2018 | 80 | $3.83/W | $4.01/W | −4% |
| 2017 | 102 | $4.06/W | $4.05/W | +0% |
| 2016 | 120 | $4.50/W | $4.37/W | +3% |
| 2015 | 22 | $4.43/W | $4.58/W | −3% |
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.
Latest records
Most recent recorded installs
| Date | Location | Size | Price | Ownership |
|---|---|---|---|---|
| Dec 31, 2025 | Westlake Village, CA | 37.4 kW | $165,000 | Host-owned · battery |
| Dec 31, 2025 | Thousand Oaks, CA | 5.6 kW | $19,000 | Host-owned · battery |
| Dec 31, 2025 | Simi Valley, CA | 5.4 kW | $19,600 | Host-owned · battery |
| Dec 30, 2025 | Santa Barbara, CA | 4.1 kW | $31,000 | Host-owned · battery |
| Dec 30, 2025 | Agoura Hills, CA | 16.7 kW | $65,810 | Host-owned · battery |
| Dec 30, 2025 | Camarillo, CA | 6.2 kW | $33,000 | Host-owned · battery |
| Dec 30, 2025 | Thousand Oaks, CA | 11.9 kW | $45,606 | Host-owned · battery |
| Dec 26, 2025 | Camarillo, CA | 11.4 kW | $44,199 | Host-owned · battery |
| Dec 24, 2025 | Santa Rosa Valley, CA | 27.5 kW | $111,163 | Host-owned · battery |
| Dec 23, 2025 | Camarillo, CA | 8.8 kW | $42,484 | Host-owned · battery |
See all 1,244 installations →searchable & filterable; export to CSV with a free account
Service geography
- California
- 1,244
Busiest cities
Record
- Installer ID
- PC-9789
- First recorded install
- May 31, 2012
- Last recorded install
- Dec 31, 2025
- Priced records
- 1,232
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.
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How does Quantum Solar Designs compare with other installers in California?
By recorded installations Quantum Solar Designs ranks 214th among the 6,010 installers based in California with five or more records. Its 2023–2025 solar-only median of $3.70/W is roughly in line with the California median of $3.95/W on the same basis. Its median system, 7.1 kW, is about 21% above the state median of 5.9 kW. 0% of its recorded installations are third-party owned (lease or power-purchase agreement), against 29% across California. 13% include battery storage, compared with 16% of California records. Installers of similar recorded volume in California include Ces Construction (1,266), Barnes Solar (1,259) and Got Watts Electric (1,254).
How has Quantum Solar Designs's installation volume changed?
Quantum Solar Designs's earliest dated installation on record is from 2012. It has recorded installations in 14 calendar years. The busiest year was 2023, with 168 installations. 2025, its latest year with records, has 74. Its median price per watt moved from $5.00/W in 2012 to $4.43/W in 2025. The most recent recorded installation is dated Dec 31, 2025.
Where does Quantum Solar Designs install solar?
All recorded installations are in California. The cities with the most of its installations are Camarillo, CA (349), Thousand Oaks, CA (121), Simi Valley, CA (112), Newbury Park, CA (75) and Ventura, CA (47).
Frequently asked questions
How many solar installations has Quantum Solar Designs completed?
PanelCensus records 1,244 installations by Quantum Solar Designs, from May 31, 2012 to Dec 31, 2025, totalling 9.6 MW of capacity. Public reporting varies by state, so the company's true total may be higher.
What does Quantum Solar Designs charge for solar?
For solar-only systems installed in 2023–2025, the median reported price is $3.70/W before incentives, across 161 priced systems. The California median on the same basis is $3.95/W. Across all 1,232 priced systems since 2012, including battery systems, the median is $3.85/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 Quantum Solar Designs install solar?
All 1,244 recorded installations are in California, the most of them in Camarillo.
Is Quantum Solar Designs still installing solar?
The most recent installation attributed to Quantum Solar Designs in the public records is dated Dec 31, 2025; 2025 has 74 recorded installations. Records reach PanelCensus months to a couple of years after installation, so recent activity may not appear yet.
Does Quantum Solar Designs install leased or PPA solar systems?
0 recorded installations by Quantum Solar Designs (0%) are third-party owned — a lease or power-purchase agreement; across California the share is 29%.
Does Quantum Solar Designs install battery storage?
163 recorded installations by Quantum Solar Designs (13%) include a battery.
Related installers and places
- All solar installers in California· 6,010 profiles
- Solar installations in California· 2,408,542 records
- Ces Construction· 1,266 installations
- Barnes Solar· 1,259 installations
- Got Watts Electric· 1,254 installations
- Solar Service Center· 1,242 installations
- Fluent Solar· 1,240 installations
- Pell Solar· 1,233 installations
Dataset updated . Sources: LBNL Tracking the Sun + permit and program records; installer resolved by exact-normalized name matching.
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, “Quantum Solar Designs, solar installer (California)”, https://panelcensus.com/installers/california/quantum-solar-designs-9789 (data as of September 21, 2026).