Porter Graham Construction
Recently activeSolar installer based in California · installer record #9451 resolved from 169 public installation records.
At a glance
Porter Graham Construction is a solar installer with 169 recorded installations totalling 1.9 MW, dated 2016 to 2025. All of its records are in California, where it ranks 1005th of 6,010 profiled installers by volume and 1,626th of 10,537 nationally. Its median installed price for solar-only systems in 2023–2025 is $2.58/W before incentives, across 57 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 | Porter Graham Construction | California median | vs state |
|---|---|---|---|---|
| 2024 | 6 | $2.57/W | $3.80/W | −32% |
| 2023 | 47 | $2.59/W | $4.06/W | −36% |
| 2022 | 25 | $2.64/W | $4.11/W | −36% |
| 2021 | 21 | $2.61/W | $3.98/W | −34% |
| 2020 | 29 | $2.60/W | $3.97/W | −35% |
| 2019 | 9 | $2.63/W | $3.95/W | −33% |
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 23, 2025 | Merced, CA | 14.4 kW | $34,700 | Host-owned |
| Dec 22, 2025 | Atwater, CA | 14.5 kW | $30,000 | Host-owned |
| Dec 16, 2025 | Merced, CA | 15.6 kW | $50,000 | Host-owned · battery |
| Dec 1, 2025 | Merced, CA | 9.3 kW | $31,000 | Host-owned · battery |
| Nov 12, 2025 | Merced, CA | 27.8 kW | $71,600 | Host-owned |
| Oct 27, 2025 | Merced, CA | 14.1 kW | $45,000 | Host-owned · battery |
| Oct 22, 2025 | Merced, CA | 12.8 kW | $44,000 | Host-owned · battery |
| Oct 15, 2025 | Merced, CA | 10.1 kW | $32,000 | Host-owned · battery |
| Sep 17, 2025 | El Nido, CA | 10.7 kW | $40,000 | Host-owned · battery |
| Jun 26, 2025 | Merced, CA | 8.7 kW | $40,000 | Host-owned · battery |
See all 169 installations →searchable & filterable; export to CSV with a free account
Service geography
- California
- 169
Busiest cities
Record
- Installer ID
- PC-9451
- First recorded install
- Oct 13, 2016
- Last recorded install
- Dec 23, 2025
- Priced records
- 164
Is this your company?
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How does Porter Graham Construction compare with other installers in California?
By recorded installations Porter Graham Construction ranks 1005th among the 6,010 installers based in California with five or more records. Its 2023–2025 solar-only median of $2.58/W is about 35% below the California median of $3.95/W on the same basis. Its median system, 11 kW, is about 85% 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. 16% include battery storage, compared with 16% of California records. Installers of similar recorded volume in California include Knowles Electric (170), Swan Solar (170) and Mirador Construction (169).
How has Porter Graham Construction's installation volume changed?
Porter Graham Construction's earliest dated installation on record is from 2016. It has recorded installations in 8 calendar years. The busiest year was 2023, with 48 installations. 2025, its latest year with records, has 16. Its median price per watt moved from $4.74/W in 2016 to $3.21/W in 2025. The most recent recorded installation is dated Dec 23, 2025.
Where does Porter Graham Construction install solar?
All recorded installations are in California. The cities with the most of its installations are Merced, CA (69), Atwater, CA (54), Stockton, CA (8), Chowchilla, CA (7) and Winton, CA (5).
Frequently asked questions
How many solar installations has Porter Graham Construction completed?
PanelCensus records 169 installations by Porter Graham Construction, from Oct 13, 2016 to Dec 23, 2025, totalling 1.9 MW of capacity. Public reporting varies by state, so the company's true total may be higher.
What does Porter Graham Construction charge for solar?
For solar-only systems installed in 2023–2025, the median reported price is $2.58/W before incentives, across 57 priced systems. The California median on the same basis is $3.95/W. Across all 164 priced systems since 2016, including battery systems, the median is $2.66/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 Porter Graham Construction install solar?
All 169 recorded installations are in California, the most of them in Merced.
Is Porter Graham Construction still installing solar?
The most recent installation attributed to Porter Graham Construction in the public records is dated Dec 23, 2025; 2025 has 16 recorded installations. Records reach PanelCensus months to a couple of years after installation, so recent activity may not appear yet.
Does Porter Graham Construction install leased or PPA solar systems?
0 recorded installations by Porter Graham Construction (0%) are third-party owned — a lease or power-purchase agreement; across California the share is 29%.
Does Porter Graham Construction install battery storage?
27 recorded installations by Porter Graham Construction (16%) include a battery.
Related installers and places
- All solar installers in California· 6,010 profiles
- Solar installations in California· 2,408,542 records
- Knowles Electric· 170 installations
- Swan Solar· 170 installations
- Mirador Construction· 169 installations
- Golden West Energy· 168 installations
- Home Networks· 168 installations
- Robinson Electric· 168 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, “Porter Graham Construction, solar installer (California)”, https://panelcensus.com/installers/california/porter-graham-construction-9451 (data as of September 21, 2026).