JAMES E WILLIAMS & SON INC
Recently activeSolar installer based in California · installer record #42964 resolved from 19 public installation records.
At a glance
JAMES E WILLIAMS & SON INC is a solar installer with 19 recorded installations totalling 207 kW, dated 2023 to 2026. All of its records are in California, where it ranks 3338th of 6,220 profiled installers by volume and 5,559th 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 |
|---|---|---|---|---|
| Jan 29, 2026 | No# 4, CA | 3 kW | $6,000 | — |
| Jan 29, 2026 | No# 22, CA | — | $0 | — |
| May 28, 2025 | Sacramento, CA | 17 kW | $34,000 | — |
| May 27, 2025 | Sacramento, CA | 23 kW | $45,000 | — |
| May 9, 2025 | Sac, CA | 23 kW | $45,000 | — |
| May 9, 2025 | Sacramento, CA | 25 kW | $49,000 | — |
| May 9, 2025 | Sacramento, CA | 25 kW | $49,000 | — |
| May 9, 2025 | Sacramento, CA | 17 kW | $34,000 | — |
| May 9, 2025 | Sacramento, CA | 4 kW | $8,500 | — |
| Apr 15, 2025 | Sacramento, CA | 4 kW | $8,500 | — |
See all 19 installations →searchable & filterable; export to CSV with a free account
Record
- Installer ID
- PC-42964
- First recorded install
- Jun 12, 2023
- Last recorded install
- Jan 29, 2026
- Priced records
- 0
Is this your company?
Installers will be able to claim this profile, correct records and add licensing, NABCEP credentials and service details. Create a free account to be ready when claims open.
How does JAMES E WILLIAMS & SON INC compare with other installers in California?
By recorded installations JAMES E WILLIAMS & SON INC ranks 3338th among the 6,220 installers based in California with five or more records. Its median system, 8.5 kW, is about 44% 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. 0% include battery storage, compared with 16% of California records. Installers of similar recorded volume in California include FAMILY COMFORT HEATING & COOLING INC (19), FIGUEROA'S HEATING AND AIR (19) and FOUR ACE ELECTRICAL SERVICES CORPORATION (19).
How has JAMES E WILLIAMS & SON INC's installation volume changed?
JAMES E WILLIAMS & SON INC's earliest dated installation on record is from 2023. It has recorded installations in 2 calendar years. The busiest year was 2025, with 9 installations. The most recent recorded installation is dated Jan 29, 2026.
Where does JAMES E WILLIAMS & SON INC install solar?
All recorded installations are in California. The cities with the most of its installations are Sacramento, CA (14), No# 4, CA (3), Sac, CA (1) and No# 22, CA (1).
Frequently asked questions
How many solar installations has JAMES E WILLIAMS & SON INC completed?
PanelCensus records 19 installations by JAMES E WILLIAMS & SON INC, from Jun 12, 2023 to Jan 29, 2026, totalling 207 kW of capacity. Public reporting varies by state, so the company's true total may be higher.
What does JAMES E WILLIAMS & SON INC charge for solar?
The recorded systems for JAMES E WILLIAMS & SON INC do not include enough price data to compute a reliable median.
Where does JAMES E WILLIAMS & SON INC install solar?
All 19 recorded installations are in California, the most of them in Sacramento.
Is JAMES E WILLIAMS & SON INC still installing solar?
The most recent installation attributed to JAMES E WILLIAMS & SON INC in the public records is dated Jan 29, 2026; 2025 has 9 recorded installations. Records reach PanelCensus months to a couple of years after installation, so recent activity may not appear yet.
Does JAMES E WILLIAMS & SON INC install leased or PPA solar systems?
0 recorded installations by JAMES E WILLIAMS & SON INC (0%) are third-party owned — a lease or power-purchase agreement; across California the share is 29%.
Does JAMES E WILLIAMS & SON INC install battery storage?
0 recorded installations by JAMES E WILLIAMS & SON INC (0%) include a battery.
Related installers and places
- All solar installers in California· 6,220 profiles
- Solar installations in California· 2,413,021 records
- FAMILY COMFORT HEATING & COOLING INC· 19 installations
- FIGUEROA'S HEATING AND AIR· 19 installations
- FOUR ACE ELECTRICAL SERVICES CORPORATION· 19 installations
- Josh Hans· 19 installations
- PACIFIC SUN TECHNOLOGIES, INC· 19 installations
- Petersen Dean Roofing & Solar· 19 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 July 9, 2026 — PanelCensus refreshes it as each source publishes new records. See the methodology for how records are matched, cleaned and scored.
Cite as: PanelCensus, “JAMES E WILLIAMS & SON INC, solar installer (California)”, https://panelcensus.com/installers/california/james-e-williams-son-inc-42964 (data as of July 9, 2026).