NULL NULL; JOHN WILLIAMS
Recently activeSolar installer based in District of Columbia · installer record #49301 resolved from 478 public installation records.
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 |
|---|---|---|---|---|
| Feb 6, 2026 | Washington, DC | 5.3 kW | — | — |
| Feb 6, 2026 | Washington, DC | 8.8 kW | — | — |
| Feb 6, 2026 | Washington, DC | 7 kW | — | — |
| Feb 6, 2026 | Washington, DC | 4.8 kW | — | — |
| Feb 6, 2026 | Washington, DC | 6.6 kW | — | — |
| Feb 6, 2026 | Washington, DC | 10.6 kW | — | — |
| Jan 30, 2026 | Washington, DC | 4 kW | — | — |
| Jan 30, 2026 | Washington, DC | 4.4 kW | — | — |
| Jan 30, 2026 | Washington, DC | 7.6 kW | — | — |
| Jan 23, 2026 | Washington, DC | 10.1 kW | — | — |
Record
- Installer ID
- PC-49301
- First recorded install
- Nov 2, 2022
- Last recorded install
- Feb 6, 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.
Frequently asked questions
How many solar installations has NULL NULL; JOHN WILLIAMS completed?
PanelCensus records 478 installations by NULL NULL; JOHN WILLIAMS, from Nov 2, 2022 to Feb 6, 2026, totalling 3.9 MW of capacity. Dataset coverage varies by state, so actual totals may be higher.
What does NULL NULL; JOHN WILLIAMS charge for solar?
The recorded systems for NULL NULL; JOHN WILLIAMS do not include enough price data to compute a reliable median.
Where does NULL NULL; JOHN WILLIAMS install solar?
Recorded installs span 1 state, led by District of Columbia (478).
Dataset updated . Sources: LBNL Tracking the Sun + permit and program records; installer resolved by exact-normalized name matching.