Solar installations in Washington County, RI
31 recorded installations in Washington County, Rhode Island — capacity, prices and the installers doing the work.
At a glance
Washington County, Rhode Island has 31 recorded solar installations totalling 147.2 MW of capacity — the 2nd-highest count among the 5 Rhode Island counties with records, and under 1% of the state total. That is about 0.05% of the county's 66,068 housing units, against 1.1% statewide.
Dataset updated . Sources: LBNL Tracking the Sun + city permit records + state programs + USGS/EIA utility-scale.
Severe-weather exposure: solar sites here have been matched to an average of 2.4 hail and 3.9 high-wind NOAA storm events — a regional inspection/maintenance signal (proximity, not confirmed damage).
Search every recorded installation in Washington County by installer, size, date and equipment.
Search sites →Independent check:Stanford's DeepSolar detected about 1,807 solar arrays here from 2018 satellite imagery — our recorded data covers roughly 2% of that (this county is under-reported in public program data). A yardstick, not dated records.
Most active
Top installers in Washington County
No resolved installers recorded in this county.
Growth
Installations by year
How does Washington County compare with the rest of Rhode Island?
The median recorded system in Washington County is 2400 kW, about 298 times the state median of 8.06 kW. 0% of installations here are third-party owned (lease or power-purchase agreement), compared with 1% across Rhode Island. None of the county's records include battery storage, against 6% statewide. By share of housing units with a recorded system, Washington County ranks 1st of 4 Rhode Island 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 Washington County?
The earliest recorded installation in Washington County dates to 2013. The busiest year on record is 2018, with 8 installations. 2024 has 1 recorded installation so far. The county's cumulative total rose from 16 at the end of 2019 to 31 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 Washington County?
PanelCensus records 31 solar installations in Washington County, Rhode Island (147.2 MW of capacity) — about 0.05% of the county's 66,068 housing units (U.S. Census ACS). Coverage depends on Rhode Island's public reporting, so the true total is likely higher.
How much of the solar in Washington County is leased?
0 recorded installations (0%) in Washington County are third-party owned — a lease or power-purchase agreement, compared with 1% across Rhode Island.
How big is a typical solar system in Washington County?
The median recorded system in Washington County is 2,400 kW, against 8.1 kW for Rhode Island as a whole.
More solar data near Washington County
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 Washington County, Rhode Island”, https://panelcensus.com/solar/rhode-island/washington-county (data as of October 10, 2026).