FieldProspects

Putnam County, Illinois

Putnam County, Illinois has 7 power projects in the FieldProspects database: 2 operating plants totaling 4 MW and 5 planned projects totaling 547.1 MW. No data center record lists the county. Solar leads with 224 MW across 3 projects. 3 planned projects are past their listed in-service date.

Data as of Grid region: Midcontinent ISO (MISO)Refreshed monthly
7
power projects, planned and operating
547.1MW
planned generation, 5 projects
4MW
operating generation, 2 solar projects
3
planned projects past their listed in-service date
Map

Putnam County and its neighbors

Counties shaded by data center MW on record, planned to operating. 3 of its 3 neighboring counties have pages of their own. The rest are in the member database.

Marshall no data centers LaSalle no data centers Putnam no data centers Bureau no data centers
no data center MWunder 100 MW100 to 1,000 MW1,000 to 5,000 MW5,000 to 15,000 MW15,000 MW or more no page yet

Data center records planned, under construction and operating, data as of October 8, 2026.Hover a county for its numbers

Headline finding
137times

more planned than operating generation in Putnam County. 5 projects in the queue would add 547.1 MW to the 4 MW operating today, and 3 of them are past their listed in-service date.

Operating generation4 MW
Planned generation547.1 MW

Technology mix

7 projects, 551.1 MW planned and operating

Solar224 MW3 projects, 41%
Wind192.9 MW2 projects, 35%
Battery Storage110 MW1 project, 20%
One other technology24.2 MW1 project, 4%
Which companies own these 7 projects?Project names, developers and contacts are for members.See what members get

Power generation in the county

2 plants operate inside Putnam County, 4 MW of solar. The queue adds 547.1 MW across 5 projects, and 3 of them are past their listed in-service date.

Figure 1

Operating and planned generation by technology

MW in Putnam County

OperatingPlanned
SolarOperating 4 MW 2 projects
SolarPlanned 220 MW 1 project
WindPlanned 192.9 MW 2 projects
Battery StoragePlanned 110 MW 1 project
Solar + Storage (Hybrid)Planned 24.2 MW 1 project
View as table
TechnologyStatusProjectsMW
SolarOperating24
SolarPlanned1220
WindPlanned2192.9
Battery StoragePlanned1110
Solar + Storage (Hybrid)Planned124.2
Operating: 4 MW. Planned: 547.1 MW. If every planned project is built, county generation would reach 551.1 MW.
Source. FieldProspects database: ISO/RTO interconnection queues, EIA-860M and public data center filings, data as of October 8, 2026.
Figure 2

Planned generation by listed in-service year

MW. Years before 2026 are past due.

Past dueDue 2026 or later
0100200300400 Snapshot year 217 2024 2025 330 2026
View as table
YearPlanned projectsMW
20243217.1
202500
20262330
3 projects, 217.1 MW, were due before 2026

Putnam County against its neighbors

None of the 3 neighboring counties with a page lists a data center record. LaSalle County has the most operating generation among them, 2.8 GW.

CountyData center recordsData center MWOperating generation MWPlanned generation MWData center MW per MW operating
LaSalle County 0
0
2,824
4,642 0x
Bureau County 0
0
752
164 0x
Marshall County 0
0
146
491 0x
Putnam County this page 0
0
4
547 0x

Data center MW counts records planned, under construction and operating. Generation is inside the county only. Neighbors without a page have fewer than three projects on record.

4 counties shown

Every record in Putnam County

Project name, developer, status, MW, in-service year and the developer’s contacts, for all 7 records. Filter, sort and export to Excel.

Members only
County: Putnam County, ILStatus: all except cancelledSort: MW, largest first 7 records
Project or campusDeveloperStatusMWYearContacts
7 records and 551.1 MW behind this preview

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