Solar installations in Rock Island County, IL
355 recorded installations in Rock Island County, Illinois — capacity, prices and the installers doing the work.
At a glance
Rock Island County, Illinois has 355 recorded solar installations totalling 16.7 MW of capacity — the 43rd-highest count among the 102 Illinois counties with records, and under 1% of the state total. That is about 0.53% of the county's 66,742 housing units, against 2.1% statewide.
Dataset updated . Sources: LBNL Tracking the Sun + city permit records + state programs + USGS/EIA utility-scale.
Search every recorded installation in Rock Island County by installer, size, date and equipment.
Search sites →Independent check:Stanford's DeepSolar detected about 227 solar arrays here from 2018 satellite imagery — our recorded data covers roughly 156% of that. A yardstick, not dated records.
Most active
Top installers in Rock Island County
No resolved installers recorded in this county.
Growth
Installations by year
How does Rock Island County compare with the rest of Illinois?
The median recorded system in Rock Island County is 10.14 kW, about 13% above the state median of 8.97 kW. 9% of installations here are third-party owned (lease or power-purchase agreement), compared with 43% across Illinois. 9 systems (3%) of the county's records include battery storage, against 4% statewide. By share of housing units with a recorded system, Rock Island County ranks 99th of 102 Illinois 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 Rock Island County?
The earliest recorded installation in Rock Island County dates to 2016. The busiest year on record is 2020, with 79 installations. 2025 has 53 recorded installations so far. The county's cumulative total rose from 95 at the end of 2020 to 355 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 Rock Island County?
PanelCensus records 355 solar installations in Rock Island County, Illinois (16.7 MW of capacity) — about 0.53% of the county's 66,742 housing units (U.S. Census ACS). Coverage depends on Illinois's public reporting, so the true total is likely higher.
How much of the solar in Rock Island County is leased?
32 recorded installations (9%) in Rock Island County are third-party owned — a lease or power-purchase agreement, compared with 43% across Illinois.
How big is a typical solar system in Rock Island County?
The median recorded system in Rock Island County is 10.1 kW, against 9 kW for Illinois as a whole.
More solar data near Rock Island County
- Solar in Illinois· 115,098 installations
- Solar installers in Illinois
- Solar in Christian County· 435 installations
- Solar in Morgan County· 384 installations
- Solar in Monroe County· 357 installations
- Solar in Logan County· 341 installations
- Solar in Bureau County· 324 installations
- Solar in Effingham County· 315 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 19, 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 Rock Island County, Illinois”, https://panelcensus.com/solar/illinois/rock-island-county (data as of October 19, 2026).