FieldProspects

Jefferson County, Arkansas

Jefferson County, Arkansas has 19 power projects in the FieldProspects database: 7 operating plants totaling 2.1 GW and 12 planned projects totaling 2.8 GW. No data center record lists the county. Coal leads with 1.8 GW across 2 projects. 1 planned project is past its listed in-service date.

Data as of Grid region: Midcontinent ISO (MISO)Refreshed monthly
19
power projects, planned and operating
2.8GW
planned generation, 12 projects
2.1GW
operating generation, 7 projects
1
planned project past its listed in-service date
Map

Jefferson County and its neighbors

Counties shaded by data center MW on record, planned to operating. 5 of its 6 neighboring counties have pages of their own. The rest are in the member database.

Cleveland Pulaski 155 MW Lonoke no data centers Jefferson no data centers Lincoln no data centers Grant no data centers Arkansas 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
1.3times

more planned than operating generation in Jefferson County. 12 projects in the queue would add 2.8 GW to the 2.1 GW operating today, and one of them is past its listed in-service date.

Operating generation2.1 GW
Planned generation2.8 GW

Technology mix

19 projects, 5 GW planned and operating

Coal1.8 GW2 projects, 36%
Natural Gas1.2 GW5 projects, 24%
Solar925 MW3 projects, 19%
4 other technologies1.1 GW9 projects, 21%
Which companies own these 19 projects?Project names, developers and contacts are for members.See what members get

Power generation in the county

7 plants operate inside Jefferson County, 2.1 GW. The queue adds 2.8 GW across 12 projects, and one of them is past its listed in-service date.

Figure 1

Operating and planned generation by technology

MW in Jefferson County

OperatingPlanned
CoalOperating 1.8 GW 2 projects
Natural GasOperating 230.4 MW 2 projects
Natural GasPlanned 934 MW 3 projects
SolarPlanned 925 MW 3 projects
Solar + Storage (Hybrid)Planned 600 MW 2 projects
Battery StoragePlanned 350 MW 1 project
BiomassOperating 85 MW 3 projects
HydroPlanned 25.8 MW 3 projects
View as table
TechnologyStatusProjectsMW
CoalOperating21,800
Natural GasOperating2230.4
Natural GasPlanned3934
SolarPlanned3925
Solar + Storage (Hybrid)Planned2600
Battery StoragePlanned1350
BiomassOperating385
HydroPlanned325.8
Operating: 2.1 GW. Planned: 2.8 GW. If every planned project is built, county generation would reach 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.

Past dueDue 2026 or later
05001k1.5k2k Snapshot year 114 2022 2023 2024 2025 275 2026 450 2027 2028 1,970 2029 2030 26 2031
View as table
YearPlanned projectsMW
20221114
202300
202400
202500
20262275
20271450
202800
202951,970
203000
2031325.8
1 project, 114 MW, was due before 2026

Jefferson County against its neighbors

Pulaski County has the most data center MW among the neighbors, 155 MW. 4 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
Pulaski County 4
155
664
120 0.23x
Jefferson County this page 0
0
2,115
2,835 0x
Grant County 0
0
100
640 0x
Arkansas County 0
0
81
925 0x
Lincoln County 0
0
7
0 0x
Lonoke County 0
0
0
968 no operating MW

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

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

Open the change feed
2
added to a queue, 950 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 Jefferson County

Project, what changed, technology, MW and the dates that moved, for all 2 changes.

Members only
County: Jefferson County, ARSince June 4, 2026 2 changes
ProjectChangeTechnologyMWPrevious dateNew date
2 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 Jefferson County

Project name, developer, status, MW, in-service year and the developer’s contacts, for all 19 records. Filter, sort and export to Excel.

Members only
County: Jefferson County, ARStatus: all except cancelledSort: MW, largest first 19 records
Project or campusDeveloperStatusMWYearContacts
19 records and 5 GW behind this preview

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