How many solar farms are in Illinois?

Illinois has 482 operating utility-scale solar farms with 5.9 GW of capacity, according to the EIA's monthly survey of power plants.

What is the largest solar farm in Illinois?

Double Back Diamond in Sangamon County, Illinois is the largest, at 593 MW. It came online in 2024.

How many solar farms were built in Illinois in 2025?

148 solar farms came online in Illinois in 2025, with 1,351 MW of capacity.

Who is developing solar farms in Illinois?

Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.

Solar farms in Illinois

Illinois has 482 operating solar farms with 5.9 GW of capacity. 148 came online in 2025.

Operating482

See planned solar farms in Illinois

Updated monthly. Last updated November 2026.

Under 50 MW50–249 MW250 MW and up

Updated monthly. Last updated November 2026.

Illinois had 7 solar farms online in 2016 and 482 in 2026

123

136

168

271

419

482

2016’162017’172018’182019’192020’202021’212022’222023’232024’242025’252026’26

Solar farms online at the end of each year. Source: EIA-860M, compiled by Cleanview.

The 10 largest solar farms in Illinois

Operating, by capacity

#	Solar farm	County	Year online	Capacity
1	Double Back Diamond	Sangamon County	2024	593 MW
2	Pulaski Solar	Pulaski County	2026	417 MW
3	Archtop Solar	Ford County	2026	287 MW
4	Emily Solar, LLC	Cumberland County	2025	274 MW
5	Maple Flats	Clay County	2024	250 MW
6	Prairie Wolf Solar LLC	Coles County	2021	200 MW
7	River Ferry Solar 1	Clark County	2023	165 MW
8	Eldorado Solar I	Saline County	2025	150 MW
9	Boomtown Renewable Energy Center	White County	2024	150 MW
10	Cass County Renewable Energy Center	Cass County	2024	150 MW

Solar farms that came online most recently in Illinois

Newest first

#	Solar farm	County	Year online	Capacity
1	Pulaski Solar	Pulaski County	2026	417 MW
2	Casey Fork Solar, LLC	Jefferson County	2026	150 MW
3	Bluestar Solar Project, LLC	Montgomery County	2026	5 MW
4	McCray Solar 1, LLC	Bond County	2026	5 MW
5	Dragon's Breath Solar LLC PV	Tazewell County	2026	5 MW
6	Copenhagen Ct	Cook County	2026	4 MW
7	Ember Sun LLC PV	McDonough County	2026	3 MW
8	OER IL - Groundhog	McHenry County	2026	2 MW
9	Northlake 3-SLCHI303	Cook County	2026	2 MW
10	Spillertown CSG 2 LLC	Williamson County	2026	5 MW

The developer behind each project is on paid plans. See plans

How Cleanview tracks solar farms

Operating solar farms come from the EIA's monthly survey of power plants. Planned projects come from the grid operators' interconnection queues. We research who is developing each one, since a queue lists a project company, not its owner.

Questions about solar farms in Illinois

How many solar farms are in Illinois?: Illinois has 482 operating utility-scale solar farms with 5.9 GW of capacity, according to the EIA's monthly survey of power plants.
What is the largest solar farm in Illinois?: Double Back Diamond in Sangamon County, Illinois is the largest, at 593 MW. It came online in 2024.
How many solar farms were built in Illinois in 2025?: 148 solar farms came online in Illinois in 2025, with 1,351 MW of capacity.
Who is developing solar farms in Illinois?: Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.