Interstate Roofing And Solar
Recently activeSolar installer based in California · installer record #6450 resolved from 140 public installation records.
At a glance
Interstate Roofing And Solar is a solar installer with 140 recorded installations totalling 760 kW, dated 2012 to 2025. All of its records are in California, where it ranks 1118th of 6,010 profiled installers by volume and 1,839th of 10,537 nationally. Its median installed price for solar-only systems in 2023–2025 is $3.83/W before incentives, across 25 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 | Interstate Roofing And Solar | California median | vs state |
|---|---|---|---|---|
| 2023 | 17 | $3.83/W | $4.06/W | −6% |
| 2022 | 10 | $4.40/W | $4.11/W | +7% |
| 2021 | 13 | $3.51/W | $3.98/W | −12% |
| 2020 | 16 | $3.77/W | $3.97/W | −5% |
| 2019 | 7 | $4.15/W | $3.95/W | +5% |
| 2018 | 9 | $4.22/W | $4.01/W | +5% |
| 2017 | 13 | $4.13/W | $4.05/W | +2% |
| 2016 | 20 | $4.86/W | $4.37/W | +11% |
| 2015 | 7 | $4.30/W | $4.58/W | −6% |
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 19, 2025 | Piedmont, CA | 1.8 kW | $30,210 | Host-owned |
| Dec 16, 2025 | Oakland, CA | 9.7 kW | $35,190 | Host-owned |
| Nov 3, 2025 | Piedmont, CA | 1.3 kW | $15,660 | Host-owned |
| Oct 15, 2025 | Piedmont, CA | 16 kW | $49,300 | Host-owned |
| Sep 8, 2025 | Piedmont, CA | 8.6 kW | $33,439 | Host-owned · battery |
| Aug 12, 2025 | Berkeley, CA | 7.3 kW | $37,842 | Host-owned · battery |
| Feb 25, 2025 | Piedmont, CA | 2.8 kW | $20,660 | Host-owned · battery |
| Feb 6, 2025 | Piedmont, CA | 4.5 kW | $38,860 | Host-owned · battery |
| Dec 23, 2024 | San Leandro, CA | — | $18,310 | Host-owned · battery |
| Dec 12, 2024 | Oakland, CA | — | $22,546 | Host-owned · battery |
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Service geography
- California
- 140
Busiest cities
Record
- Installer ID
- PC-6450
- First recorded install
- Apr 20, 2012
- Last recorded install
- Dec 19, 2025
- Priced records
- 126
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How does Interstate Roofing And Solar compare with other installers in California?
By recorded installations Interstate Roofing And Solar ranks 1118th among the 6,010 installers based in California with five or more records. Its 2023–2025 solar-only median of $3.83/W is roughly in line with the California median of $3.95/W on the same basis. Its median system, 5 kW, is about 16% below 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. 6% include battery storage, compared with 16% of California records. Installers of similar recorded volume in California include Crane Exteriors (141), Advanced Solar Technology (141) and 21St Century Solar (140).
How has Interstate Roofing And Solar's installation volume changed?
Interstate Roofing And Solar's earliest dated installation on record is from 2012. It has recorded installations in 13 calendar years. The busiest year was 2016, with 20 installations. 2025, its latest year with records, has 8. Its median price per watt moved from $5.20/W in 2012 to $6.23/W in 2025. The most recent recorded installation is dated Dec 19, 2025.
Where does Interstate Roofing And Solar install solar?
All recorded installations are in California. The cities with the most of its installations are Oakland, CA (52), Piedmont, CA (26), Berkeley, CA (22), El Cerrito, CA (9) and Moraga, CA (6).
Frequently asked questions
How many solar installations has Interstate Roofing And Solar completed?
PanelCensus records 140 installations by Interstate Roofing And Solar, from Apr 20, 2012 to Dec 19, 2025, totalling 760 kW of capacity. Public reporting varies by state, so the company's true total may be higher.
What does Interstate Roofing And Solar charge for solar?
For solar-only systems installed in 2023–2025, the median reported price is $3.83/W before incentives, across 25 priced systems. The California median on the same basis is $3.95/W. Across all 126 priced systems since 2012, including battery systems, the median is $4.14/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 Interstate Roofing And Solar install solar?
All 140 recorded installations are in California, the most of them in Oakland.
Is Interstate Roofing And Solar still installing solar?
The most recent installation attributed to Interstate Roofing And Solar in the public records is dated Dec 19, 2025; 2025 has 8 recorded installations. Records reach PanelCensus months to a couple of years after installation, so recent activity may not appear yet.
Does Interstate Roofing And Solar install leased or PPA solar systems?
0 recorded installations by Interstate Roofing And Solar (0%) are third-party owned — a lease or power-purchase agreement; across California the share is 29%.
Does Interstate Roofing And Solar install battery storage?
9 recorded installations by Interstate Roofing And Solar (6%) include a battery.
Related installers and places
- All solar installers in California· 6,010 profiles
- Solar installations in California· 2,408,542 records
- Crane Exteriors· 141 installations
- Advanced Solar Technology· 141 installations
- 21St Century Solar· 140 installations
- Rectify Energy· 140 installations
- Solink Energy· 140 installations
- Granite Bay Energy· 140 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, “Interstate Roofing And Solar, solar installer (California)”, https://panelcensus.com/installers/california/interstate-roofing-and-solar-6450 (data as of September 21, 2026).