Solar installations in Fairfax County, VA
1,201 recorded installations in Fairfax County, Virginia — capacity, prices and the installers doing the work.
At a glance
Fairfax County, Virginia has 1,201 recorded solar installations totalling 10.6 MW of capacity — the 3rd-highest count among the 108 Virginia counties with records, and 7% of the state total. That is about 0.28% of the county's 428,352 housing units, against 0.51% statewide.
Dataset updated . Sources: LBNL Tracking the Sun + city permit records + state programs + USGS/EIA utility-scale.
Search every recorded installation in Fairfax County by installer, size, date and equipment.
Search sites →Independent check:Stanford's DeepSolar detected about 1,620 solar arrays here from 2018 satellite imagery — our recorded data covers roughly 74% of that. A yardstick, not dated records.
Most active
Top installers in Fairfax County
No resolved installers recorded in this county.
Growth
Installations by year
How does Fairfax County compare with the rest of Virginia?
The median recorded system in Fairfax County is 8.88 kW, about 19% above the state median of 7.49 kW. By share of housing units with a recorded system, Fairfax County ranks 52nd of 93 Virginia counties with at least 10 installations. Fewer than 30 systems here report an installed price, so no county price median is published.
How has solar adoption changed in Fairfax County?
The earliest recorded installation in Fairfax County dates to 2006. The busiest year on record is 2019, with 467 installations. 2022 has 1 recorded installation so far. The county's cumulative total rose from 410 at the end of 2017 to 1,201 today. Recent years fill in as state programs and permit offices report, so the latest counts are provisional.
Frequently asked questions
How many homes have solar in Fairfax County?
PanelCensus records 1,201 solar installations in Fairfax County, Virginia (10.6 MW of capacity) — about 0.28% of the county's 428,352 housing units (U.S. Census ACS). Coverage depends on Virginia's public reporting, so the true total is likely higher.
How big is a typical solar system in Fairfax County?
The median recorded system in Fairfax County is 8.9 kW, against 7.5 kW for Virginia as a whole.
More solar data near Fairfax County
- Solar in Virginia· 18,447 installations
- Solar installers in Virginia
- Solar in Norfolk city· 3,921 installations
- Solar in Virginia Beach city· 3,914 installations
- Solar in Albemarle County· 1,008 installations
- Solar in Loudoun County· 490 installations
- Solar in Augusta County· 478 installations
- Solar in Henrico County· 414 installations
County assignment is derived from installation ZIP codes via the Census 2020 ZCTA↔county crosswalk (primary county by land-area overlap) — approximate at county boundaries. Market penetration = recorded installations ÷ housing units (U.S. Census Bureau ACS 5-Year, Table B25001); it undercounts where dataset coverage is partial. See methodology.
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 October 10, 2026 — PanelCensus refreshes it as each source publishes new records. See the methodology for how records are matched, cleaned and scored.
Cite as: PanelCensus, “Solar installations in Fairfax County, Virginia”, https://panelcensus.com/solar/virginia/fairfax-county (data as of October 10, 2026).