Solar installations in Alexander County, IL
17 recorded installations in Alexander County, Illinois — capacity, prices and the installers doing the work.
At a glance
Alexander County, Illinois has 17 recorded solar installations totalling 5.8 MW of capacity — the 100th-highest count among the 102 Illinois counties with records, and under 1% of the state total. That is about 0.57% of the county's 2,964 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 Alexander County by installer, size, date and equipment.
Search sites →Most active
Top installers in Alexander County
No resolved installers recorded in this county.
Growth
Installations by year
How does Alexander County compare with the rest of Illinois?
The median recorded system in Alexander County is 13.94 kW, about 55% above the state median of 8.97 kW. 6% of installations here are third-party owned (lease or power-purchase agreement), compared with 43% across Illinois. None of the county's records include battery storage, against 4% statewide. By share of housing units with a recorded system, Alexander County ranks 98th 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 Alexander County?
The earliest recorded installation in Alexander County dates to 2019. The busiest year on record is 2025, with 8 installations. The county's cumulative total rose from 2 at the end of 2020 to 17 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 Alexander County?
PanelCensus records 17 solar installations in Alexander County, Illinois (5.8 MW of capacity) — about 0.57% of the county's 2,964 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 Alexander County is leased?
1 recorded installation (6%) in Alexander County is third-party owned — a lease or power-purchase agreement, compared with 43% across Illinois.
How big is a typical solar system in Alexander County?
The median recorded system in Alexander County is 13.9 kW, against 9 kW for Illinois as a whole.
More solar data near Alexander County
- Solar in Illinois· 115,105 installations
- Solar installers in Illinois
- Solar in Wayne County· 32 installations
- Solar in Edwards County· 23 installations
- Solar in Calhoun County· 21 installations
- Solar in Massac County· 20 installations
- Solar in Hardin County· 17 installations
- Solar in Pulaski County· 13 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 Alexander County, Illinois”, https://panelcensus.com/solar/illinois/alexander-county (data as of October 10, 2026).