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Datacenter Sites in Johnson County, Wyoming

Johnson County has 33 scored datacenter candidate sites averaging 51.4/100 DC Readiness, with a catalogued aggregate of 1,550 MW. FEMA rates local natural-hazard risk as "Very Low". The county has a datacenter tax incentive on record.

At a glance

Johnson County, Wyoming has 33 scored datacenter candidate sites averaging 51.4/100 DC Readiness, roughly in line with the Wyoming average of 52.2. It ranks 16th of 23 Wyoming counties by number of sites and 14th by average score. The top-scoring site is BUFFALO at 63.3/100.

33
Candidate sites
51.4/100
Avg DC Readiness
1,550 MW
Catalogued capacity
theoretical aggregate
Very Low
Hazard rating
◆ Loading map…
≥ 7560–7540–60≤ 40
Top 25 in Johnson County

Site-selection context for Johnson County

Yesno_income_tax
Datacenter tax incentive
9.82¢/kWh
Commercial electricity
8.03¢/kWh
Industrial electricity
5
Fiber providers
Medium-High
Water stress
$1,165
Land price / acre
300
Cooling degree days
7,600
Heating degree days
41°F
Mean annual temp

Incentive detail: No state corporate or personal income tax; low property taxes.

How does Johnson County compare with other counties in Wyoming?

By number of scored sites, Johnson County ranks 16th of the 23 Wyoming counties with a county page, holding 2.0% of the state's 1,639 sites. Its average DC Readiness of 51.4/100 ranks 14th in the state and is roughly in line with the national average of 53.0. Nationally it has the 1166th-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 4 score 55 or higher.

What types of datacenter sites are in Johnson County?

Former Mine sites are the most common (22, 67% of the county's inventory), followed by substation-adjacent (9) and greenfield (1). 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 Johnson County?

Industrial electricity averages 8.03¢/kWh and commercial 9.82¢/kWh. FEMA's National Risk Index rates the county "Very Low" (10). WRI water stress is medium-high. 5 fiber providers report service in the county. The climate runs 300 cooling degree days a year with a mean temperature of 41°F. Land is valued around $1,165 an acre.

By site type

Top datacenter sites in Johnson County

Top datacenter sites in Johnson County
SiteTypeVoltageCapacityQueue waitScore
BUFFALOSubstation-Adjacent230 kV300 MW4.3 yrs63.3
TAP204319Substation-Adjacent69 kV50 MW4.3 yrs56.1
UNKNOWN209311Substation-Adjacent115 kV100 MW4.3 yrs55.1
KAYCEESubstation-Adjacent230 kV300 MW4.3 yrs55.0
EC Coal Johnson CountyGreenfield——4.3 yrs54.7
UNKNOWN204284Substation-Adjacent230 kV300 MW3.5 yrs53.8
UNKNOWN204282Substation-Adjacent230 kV300 MW3.5 yrs53.8
Mine SiteFormer Mine——4.3 yrs53.1
Mine SiteFormer Mine——4.3 yrs53.1
Mine SiteFormer Mine——4.3 yrs53.1
Mine SiteFormer Mine——4.3 yrs53.1
Mine SiteFormer Mine——4.3 yrs53.0
Mine SiteFormer Mine——4.3 yrs53.0
Mine SiteFormer Mine——4.3 yrs51.8
Mine SiteFormer Mine——4.3 yrs51.7
Mine SiteFormer Mine——4.3 yrs51.6
Mine SiteFormer Mine——4.3 yrs51.4
Mine SiteFormer Mine——4.3 yrs51.4
Mine SiteFormer Mine——4.3 yrs50.9
UNKNOWN204288Substation-Adjacent115 kV100 MW4.3 yrs50.7
Mine SiteFormer Mine——3.5 yrs50.6
UNKNOWN207587Substation-Adjacent69 kV50 MW4.3 yrs50.5
Mine SiteFormer Mine——4.3 yrs50.0
Mine SiteFormer Mine——4.3 yrs49.9
Mine SiteFormer Mine——4.3 yrs48.9

Every scored site in Johnson County

All 33 sites, best first.

Johnson County datacenter FAQ

How many datacenter sites are in Johnson County?

33 scored datacenter candidate sites, averaging 51.4/100 DC Readiness. That is the 16th-most of 23 Wyoming counties with five or more sites.

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

BUFFALO scores 63.3/100 DC Readiness, the highest of the 33 scored sites in Johnson County (a substation-adjacent site).

Does Johnson County offer datacenter tax incentives?

No state corporate or personal income tax; low property taxes.

What is the natural-hazard risk in Johnson County?

FEMA's National Risk Index rates Johnson County as "Very Low" (score 10).

What are industrial electricity rates in Johnson County?

Average industrial electricity is 8.03¢/kWh and commercial is 9.82¢/kWh in Johnson County.

More in Wyoming

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 Johnson County, Wyoming”, https://gridcensus.com/datacenter-sites/wyoming/johnson-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 Johnson County, Wyoming 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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