Solar installations in Mason County, IL
142 recorded installations in Mason County, Illinois — capacity, prices and the installers doing the work.
At a glance
Mason County, Illinois has 142 recorded solar installations totalling 11.5 MW of capacity — the 70th-highest count among the 102 Illinois counties with records, and under 1% of the state total. That is about 2.1% of the county's 6,615 housing units, against 2.1% 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 5 high-wind NOAA storm events — a regional inspection/maintenance signal (proximity, not confirmed damage).
Search every recorded installation in Mason County by installer, size, date and equipment.
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Top installers in Mason County
No resolved installers recorded in this county.
Growth
Installations by year
How does Mason County compare with the rest of Illinois?
The median recorded system in Mason County is 11 kW, about 23% above the state median of 8.97 kW. 34% of installations here are third-party owned (lease or power-purchase agreement), compared with 43% across Illinois. 8 systems (6%) of the county's records include battery storage, against 4% statewide. By share of housing units with a recorded system, Mason County ranks 51st 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 Mason County?
The earliest recorded installation in Mason County dates to 2019. The busiest year on record is 2024, with 48 installations. 2025 has 42 recorded installations so far. The county's cumulative total rose from 13 at the end of 2020 to 142 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 Mason County?
PanelCensus records 142 solar installations in Mason County, Illinois (11.5 MW of capacity) — about 2.1% of the county's 6,615 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 Mason County is leased?
48 recorded installations (34%) in Mason County are third-party owned — a lease or power-purchase agreement, compared with 43% across Illinois.
How big is a typical solar system in Mason County?
The median recorded system in Mason County is 11 kW, against 9 kW for Illinois as a whole.
More solar data near Mason County
- Solar in Illinois· 115,105 installations
- Solar installers in Illinois
- Solar in Stark County· 159 installations
- Solar in Menard County· 148 installations
- Solar in Edgar County· 143 installations
- Solar in De Witt County· 133 installations
- Solar in Cass County· 130 installations
- Solar in Shelby County· 129 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 Mason County, Illinois”, https://panelcensus.com/solar/illinois/mason-county (data as of October 10, 2026).