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Datacenter Sites in Johnston County, Oklahoma

Johnston County has 23 scored datacenter candidate sites averaging 49.5/100 DC Readiness, with a catalogued aggregate of 1,000 MW. FEMA rates local natural-hazard risk as "Relatively High". The county has a datacenter tax incentive on record.

At a glance

Johnston County, Oklahoma has 23 scored datacenter candidate sites averaging 49.5/100 DC Readiness, roughly in line with the Oklahoma average of 52.8. It ranks 49th of 76 Oklahoma counties by number of sites and 72nd by average score. The top-scoring site is Substation-Adjacent site · 257bbcbc at 59.7/100.

23
Candidate sites
49.5/100
Avg DC Readiness
1,000 MW
Catalogued capacity
theoretical aggregate
Relatively High
Hazard rating
◆ Loading map…
≥ 7560–7540–60≤ 40
Top 23 in Johnston County

Site-selection context for Johnston County

Yessales_tax_exemption
Datacenter tax incentive
11.06¢/kWh
Commercial electricity
5.92¢/kWh
Industrial electricity
1
Fiber providers
Low-Medium
Water stress
$2,523
Land price / acre
1,900
Cooling degree days
3,600
Heating degree days
60°F
Mean annual temp

Incentive detail: Sales tax exemption on DC equipment; 5-year ad valorem tax exemption.

How does Johnston County compare with other counties in Oklahoma?

By number of scored sites, Johnston County ranks 49th of the 76 Oklahoma counties with a county page, holding 0.6% of the state's 3,723 sites. Its average DC Readiness of 49.5/100 ranks 72nd in the state and is roughly in line with the national average of 53.0. Nationally it has the 1558th-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 2 score 55 or higher.

What types of datacenter sites are in Johnston County?

Former Mine sites are the most common (11, 48% of the county's inventory), followed by federal excess (6) and substation-adjacent (5). Site type reflects how the parcel was identified — next to a substation, on a former mine or brownfield, on industrial or federal excess land — and is scored on the same 14 factors either way.

What are power cost, hazard, water and fiber conditions in Johnston County?

Industrial electricity averages 5.92¢/kWh and commercial 11.06¢/kWh. FEMA's National Risk Index rates the county "Relatively High" (42). WRI water stress is low-medium. 1 fiber providers report service in the county. The climate runs 1,900 cooling degree days a year with a mean temperature of 60°F. Land is valued around $2,523 an acre.

By site type

Top datacenter sites in Johnston County

Top datacenter sites in Johnston County
SiteTypeVoltageCapacityQueue waitScore
UNKNOWN118834Substation-Adjacent345 kV600 MW4.3 yrs59.7
EC FFE Johnston CountyGreenfield——4.3 yrs58.1
UNKNOWN118815Substation-Adjacent138 kV100 MW4.3 yrs54.1
UNKNOWN118606Substation-Adjacent138 kV100 MW4.3 yrs54.1
UNKNOWN118610Substation-Adjacent138 kV100 MW4.3 yrs53.9
TAP149038Substation-Adjacent138 kV100 MW4.3 yrs53.9
Mine SiteFormer Mine——4.3 yrs48.4
Mine SiteFormer Mine——4.3 yrs48.0
Mine SiteFormer Mine——4.3 yrs47.8
Mine SiteFormer Mine——4.3 yrs47.7
Mine SiteFormer Mine——4.3 yrs47.6
Mine SiteFormer Mine——4.3 yrs47.6
Mine SiteFormer Mine——4.3 yrs47.5
Mine SiteFormer Mine——4.3 yrs47.5
Mine SiteFormer Mine——4.3 yrs47.4
TISHOMINGO NATIONAL FISH HATCHERYFederal Excess——4.3 yrs47.4
TISHOMINGO NATIONAL FISH HATCHERYFederal Excess——4.3 yrs47.3
TISHOMINGO NATIONAL FISH HATCHERYFederal Excess——4.3 yrs47.1
TISHOMINGO NATIONAL FISH HATCHERYFederal Excess——4.3 yrs47.0
TISHOMINGO NATIONAL FISH HATCHERYFederal Excess——4.3 yrs46.9
TISHOMINGO NATIONAL FISH HATCHERYFederal Excess——4.3 yrs46.9
Mine SiteFormer Mine——4.3 yrs46.5
Mine SiteFormer Mine——4.3 yrs46.5

Every scored site in Johnston County

All 23 sites, best first.

Johnston County datacenter FAQ

How many datacenter sites are in Johnston County?

23 scored datacenter candidate sites, averaging 49.5/100 DC Readiness. That is the 49th-most of 76 Oklahoma counties with five or more sites.

What is the highest-scoring datacenter site in Johnston County?

Substation-Adjacent site · 257bbcbc scores 59.7/100 DC Readiness, the highest of the 23 scored sites in Johnston County (a substation-adjacent site).

Does Johnston County offer datacenter tax incentives?

Sales tax exemption on DC equipment; 5-year ad valorem tax exemption.

What is the natural-hazard risk in Johnston County?

FEMA's National Risk Index rates Johnston County as "Relatively High" (score 42).

What are industrial electricity rates in Johnston County?

Average industrial electricity is 5.92¢/kWh and commercial is 11.06¢/kWh in Johnston County.

More in Oklahoma

About this data

Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published November 12, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.

Cite as: GridCensus, “Datacenter candidate sites in Johnston County, Oklahoma”, https://gridcensus.com/datacenter-sites/oklahoma/johnston-county (data as of November 12, 2026).

Dataset updated . Screening estimates derived from public data sources.

Go deeper than the public screen

Every site and score for Johnston County, Oklahoma is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.

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