Data update

Published on Aug 20, 2025 by Derek Eder

In the last month, an additional 61 megawatts (MW) of solar across 1,478 projects have been energized in the State of Illinois, bringing the total to 4,800 MW.

Category	July 20, 2025	Aug 20, 2025	Change
Energized	4,739 MW	4,800 MW	+61 MW
Planned	5,019 MW	5,067 MW	+48 MW

Data from our 3 primary sources are updated at different intervals, so the above data is valid as of the following the dates:

Illinois Adjustable Block Program (ABP) Aug 2025
Illinois Solar for All (ILSFA) Aug 2025
US EIA-860M (Utility scale projects) Jun 2025