FieldProspects

Madison County, Ohio

Madison County, Ohio has 14 power projects in the FieldProspects database: 4 operating plants totaling 957.2 MW and 10 planned projects totaling 4.5 GW. No data center record lists the county. Solar leads with 3.1 GW across 10 projects. 3 planned projects are past their listed in-service date.

Data as of Grid region: PJM InterconnectionRefreshed monthly
14
power projects, planned and operating
4.5GW
planned generation, 10 projects
957.2MW
operating generation, 4 solar projects
3
planned projects past their listed in-service date
Map

Madison County and its neighbors

Counties shaded by data center MW on record, planned to operating. 5 of its 7 neighboring counties have pages of their own. The rest are in the member database.

Greene Pickaway 800 MW Union 652 MW Clark 0 MW Madison no data centers Franklin 1.5 GW Fayette Champaign 0 MW
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
4.7times

more planned than operating generation in Madison County. 10 projects in the queue would add 4.5 GW to the 957.2 MW operating today, and 3 of them are past their listed in-service date.

Operating generation957.2 MW
Planned generation4.5 GW

Technology mix

14 projects, 5.5 GW planned and operating

Solar3.1 GW10 projects, 56%
Battery Storage2.4 GW4 projects, 44%
Which companies own these 14 projects?Project names, developers and contacts are for members.See what members get

Power generation in the county

4 plants operate inside Madison County, 957.2 MW of solar. The queue adds 4.5 GW across 10 projects, and 3 of them are past their listed in-service date.

Figure 1

Operating and planned generation by technology

MW in Madison County

OperatingPlanned
SolarOperating 957.2 MW 4 projects
SolarPlanned 2.1 GW 6 projects
Battery StoragePlanned 2.4 GW 4 projects
View as table
TechnologyStatusProjectsMW
SolarOperating4957.2
SolarPlanned62,110
Battery StoragePlanned42,400
Operating: 957.2 MW. Planned: 4.5 GW. If every planned project is built, county generation would reach 5.5 GW.
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. 3 planned projects list no date and are left out.

Past dueDue 2026 or later
05001k1.5k Snapshot year 800 2024 400 2025 2026 310 2027 2028 2029 1,200 2030
View as table
YearPlanned projectsMW
20242800
20251400
202600
20272310
202800
202900
203021,200
3 projects, 1.2 GW, were due before 2026

Madison County against its neighbors

Franklin County has the most data center MW among the neighbors, 1.5 GW. 2 of the 5 have more generation operating than data center MW on record.

CountyData center recordsData center MWOperating generation MWPlanned generation MWData center MW per MW operating
Franklin County 35
1,541
15
840 100x
Pickaway County 3
800
764
163 1x
Union County 11
652
565
497 1.2x
Madison County this page 0
0
957
4,510 0x
Champaign County 1
0
144
288 0x
Clark County 1
0
2
436 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.

6 counties shown

What changed since June 4, 2026

4 projects in Madison County moved between the two snapshots. Counts and MW are below; the projects themselves are for members.

Open the change feed
0
added to a queue, 0 MW
0
came online, started construction or signed an interconnection agreement, 0 MW
4
cancelled, dropped or went inactive, 1.1 GW
0
slipped their in-service date, 0 MW

Every change in Madison County

Project, what changed, technology, MW and the dates that moved, for all 4 changes.

Members only
County: Madison County, OHSince June 4, 2026 4 changes
ProjectChangeTechnologyMWPrevious dateNew date
4 changes 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 Madison County

Project name, developer, status, MW, in-service year and the developer’s contacts, for all 14 records. Filter, sort and export to Excel.

Members only
County: Madison County, OHStatus: all except cancelledSort: MW, largest first 14 records
Project or campusDeveloperStatusMWYearContacts
14 records and 5.5 GW behind this preview

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