Cornerstone Construction
Recently activeSolar installer based in California · active in 2 states · installer record #3081 resolved from 5 public installation records.
At a glance
Cornerstone Construction is a solar installer with 5 recorded installations totalling 25 kW, dated 2009 to 2024. Its records are concentrated in California (100%), where it ranks 5741st of 6,220 profiled installers by volume and 9,695th of 10,536 nationally.
Track record
Install volume by year
Bars: recorded installs · right column: this installer's median $/W that year.
Latest records
Most recent recorded installs
| Date | Location | Size | Price | Ownership |
|---|---|---|---|---|
| Jul 8, 2024 | Tehachapi, CA | 9.8 kW | $60,000 | Host-owned · battery |
| Jan 5, 2024 | Raleigh, NC | 18 kW | $35,534 | — |
| Aug 23, 2023 | Bonita, CA | 7.3 kW | $29,000 | Host-owned |
| Sep 29, 2022 | Spring Valley, CA | 3.3 kW | $15,000 | Host-owned |
| Sep 23, 2022 | Spring Valley, CA | 3.3 kW | $15,000 | Host-owned |
| Dec 16, 2009 | Petrolia, CA | 1.5 kW | $19,866 | Host-owned |
Service geography
Busiest cities
Record
- Installer ID
- PC-3081
- First recorded install
- Dec 16, 2009
- Last recorded install
- Jul 8, 2024
- Priced records
- 5
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How does Cornerstone Construction compare with other installers in California?
By recorded installations Cornerstone Construction ranks 5741st among the 6,220 installers based in California with five or more records. Its median system, 5.3 kW, is about 11% 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. 20% include battery storage, compared with 16% of California records. Installers of similar recorded volume in California include Constant Solar Power (5), Construction With Style (5) and Cora Electric (5).
How has Cornerstone Construction's installation volume changed?
Cornerstone Construction's earliest dated installation on record is from 2009. It has recorded installations in 4 calendar years. The busiest year was 2022, with 2 installations. 2024, its latest year with records, has 2. Its median price per watt moved from $13.07/W in 2009 to $6.10/W in 2024. The most recent recorded installation is dated Jul 8, 2024.
Where does Cornerstone Construction install solar?
Recorded installations span 2 states: California (5, 100%) and North Carolina (1, 20%). The cities with the most of its installations are Spring Valley, CA (2), Raleigh, NC (1), Tehachapi, CA (1), Bonita, CA (1) and Petrolia, CA (1).
Frequently asked questions
How many solar installations has Cornerstone Construction completed?
PanelCensus records 5 installations by Cornerstone Construction, from Dec 16, 2009 to Jul 8, 2024, totalling 25 kW of capacity. Public reporting varies by state, so the company's true total may be higher.
What does Cornerstone Construction charge for solar?
The median installed price across 5 priced systems is $4.55/W before incentives (median system 5.3 kW, about $19,866). The California median is $4.26/W.
Where does Cornerstone Construction install solar?
Recorded installs span 2 states, led by California (5) and North Carolina (1). Its busiest city is Spring Valley, CA.
Is Cornerstone Construction still installing solar?
The most recent installation attributed to Cornerstone Construction in the public records is dated Jul 8, 2024; 2024 has 2 recorded installations. Records reach PanelCensus months to a couple of years after installation, so recent activity may not appear yet.
Does Cornerstone Construction install leased or PPA solar systems?
0 recorded installations by Cornerstone Construction (0%) are third-party owned — a lease or power-purchase agreement; across California the share is 29%.
Does Cornerstone Construction install battery storage?
1 recorded installation by Cornerstone Construction (20%) includes a battery.
Related installers and places
- All solar installers in California· 6,220 profiles
- Solar installations in California· 2,413,021 records
- Constant Solar Power· 5 installations
- Construction With Style· 5 installations
- Cora Electric· 5 installations
- Crestwood Communities· 5 installations
- D N A Contracting· 5 installations
- Davidsons Electric· 5 installations
- Solar in North Carolina· 1 by Cornerstone Construction
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, “Cornerstone Construction, solar installer (California)”, https://panelcensus.com/installers/california/cornerstone-construction-3081 (data as of September 21, 2026).