Data update

Published on Jan 03, 2025 by Derek Eder

As of Jan 3, 2025, an additional 833 megawatts (MW) of solar have been energized in the State of Illinois.

This increase is attributed to two very large utility-scale solar projects coming online in November 2024: the 592MW Double Black Diamond in Sangamon County and 140MW Wolf Run Solar in Morgan County.

As of this writing, Double Black Diamond is the largest US solar project east of the Mississippi River! On January 1st, 2025, the City of Chicago switched over to this power source, making all city buildings powered by renewable energy.

Category	Dec 2, 2024	Jan 3, 2025	Change
Energized	2,599 MW	3,432 MW	+833 MW
Planned	6,143 MW	5,379 MW	-764 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) January 2025
Illinois Solar for All (ILSFA) January 2025
US EIA-860M (Utility scale projects) November 2024