FieldProspects

Union County, Iowa

Union County, Iowa has 11 power projects in the FieldProspects database: 8 operating plants totaling 424.2 MW and 3 planned projects totaling 140 MW. No data center record lists the county. Wind leads with 254.1 MW across 1 project. 3 planned projects are past their listed in-service date.

Data as of Grid region: Midcontinent ISO (MISO)Refreshed monthly
11
power projects, planned and operating
140MW
planned generation, 3 projects
424.2MW
operating generation, 8 projects
3
planned projects past their listed in-service date
Map

Union County and its neighbors

Counties shaded by data center MW on record, planned to operating. 3 of its 5 neighboring counties have pages of their own. The rest are in the member database.

Ringgold Union no data centers Adams no data centers Adair 200 MW Madison 228 MW Clarke
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
33%

of the county's operating generation is in the queue as new capacity: 140 MW planned across 3 projects against 424.2 MW operating, 3 of the planned projects already late.

Operating generation424.2 MW
Planned generation140 MW

Technology mix

11 projects, 564.2 MW planned and operating

Wind254.1 MW1 project, 45%
Solar151.4 MW4 projects, 27%
Natural Gas118.7 MW5 projects, 21%
One other technology40 MW1 project, 7%
Which companies own these 11 projects?Project names, developers and contacts are for members.See what members get

Power generation in the county

8 plants operate inside Union County, 424.2 MW. The queue adds 140 MW across 3 projects, and 3 of them are past their listed in-service date.

Figure 1

Operating and planned generation by technology

MW in Union County

OperatingPlanned
WindOperating 254.1 MW 1 project
SolarOperating 51.4 MW 2 projects
SolarPlanned 100 MW 2 projects
Natural GasOperating 118.7 MW 5 projects
OtherPlanned 40 MW 1 project
View as table
TechnologyStatusProjectsMW
WindOperating1254.1
SolarOperating251.4
SolarPlanned2100
Natural GasOperating5118.7
OtherPlanned140
Operating: 424.2 MW. Planned: 140 MW. If every planned project is built, county generation would reach 564.2 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
0255075100 100 2024 40 2025
View as table
YearPlanned projectsMW
20242100
2025140
3 projects, 140 MW, were due before 2026

Union County against its neighbors

Madison County has the most data center MW among the neighbors, 228 MW. 2 of the 3 have more generation operating than data center MW on record.

CountyData center recordsData center MWOperating generation MWPlanned generation MWData center MW per MW operating
Madison County 4
228
137
0 1.7x
Adair County 1
200
1,152
526 0.17x
Union County this page 0
0
424
140 0x
Adams County 0
0
205
0 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

What changed since June 4, 2026

1 project in Union County moved between the two snapshots. Counts and MW are below; the projects themselves are for members.

Open the change feed
1
added to a queue, 40 MW
0
came online, started construction or signed an interconnection agreement, 0 MW
0
cancelled, dropped or went inactive, 0 MW
0
slipped their in-service date, 0 MW

Every change in Union County

Project, what changed, technology, MW and the dates that moved, for all 1 change.

Members only
County: Union County, IASince June 4, 2026 1 change
ProjectChangeTechnologyMWPrevious dateNew date
1 change behind this preview

Rows are hidden on public pages. Members see the project behind each change, its developer and the dates that moved.

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Every record in Union County

Project name, developer, status, MW, in-service year and the developer’s contacts, for all 11 records. Filter, sort and export to Excel.

Members only
County: Union County, IAStatus: all except cancelledSort: MW, largest first 11 records
Project or campusDeveloperStatusMWYearContacts
11 records and 564.2 MW behind this preview

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