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Datacenter Sites in Clay County, South Dakota

Clay County has 22 scored datacenter candidate sites averaging 58.1/100 DC Readiness, with a catalogued aggregate of 1,250 MW. FEMA rates local natural-hazard risk as "Relatively Low". The county has a datacenter tax incentive on record.

At a glance

Clay County, South Dakota has 22 scored datacenter candidate sites averaging 58.1/100 DC Readiness, roughly in line with the South Dakota average of 54.7. It ranks 17th of 52 South Dakota counties by number of sites and 2nd by average score. The top-scoring site is OZ Clay at 62.2/100.

22
Candidate sites
58.1/100
Avg DC Readiness
1,250 MW
Catalogued capacity
theoretical aggregate
Relatively Low
Hazard rating
◆ Loading map…
≥ 7560–7540–60≤ 40
Top 22 in Clay County

Site-selection context for Clay County

Yesno_income_tax
Datacenter tax incentive
10.21¢/kWh
Commercial electricity
8.10¢/kWh
Industrial electricity
7
Fiber providers
Low-Medium
Water stress
$7,445
Land price / acre
700
Cooling degree days
7,300
Heating degree days
45°F
Mean annual temp

Incentive detail: No state corporate income tax; no personal income tax; no personal property tax.

How does Clay County compare with other counties in South Dakota?

By number of scored sites, Clay County ranks 17th of the 52 South Dakota counties with a county page, holding 1.9% of the state's 1,151 sites. Its average DC Readiness of 58.1/100 ranks 2nd in the state and is roughly in line with the national average of 53.0. Nationally it has the 1603rd-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 19 score 55 or higher.

What types of datacenter sites are in Clay County?

Substation-Adjacent sites are the most common (18, 82% of the county's inventory), followed by greenfield (3) and former mine (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 Clay County?

Industrial electricity averages 8.10¢/kWh and commercial 10.21¢/kWh. FEMA's National Risk Index rates the county "Relatively Low" (22). WRI water stress is low-medium. 7 fiber providers report service in the county. The climate runs 700 cooling degree days a year with a mean temperature of 45°F. Land is valued around $7,445 an acre.

By site type

Top datacenter sites in Clay County

Top datacenter sites in Clay County
SiteTypeVoltageCapacityQueue waitScore
OZ ClayGreenfield——4.3 yrs62.2
UNKNOWN131256Substation-Adjacent69 kV50 MW4.3 yrs60.6
UNKNOWN131257Substation-Adjacent115 kV100 MW4.3 yrs60.4
UNKNOWN133793Substation-Adjacent115 kV100 MW4.3 yrs60.4
TAP159315Substation-Adjacent69 kV50 MW4.3 yrs60.3
UNKNOWN133792Substation-Adjacent69 kV50 MW4.3 yrs59.8
UNKNOWN131260Substation-Adjacent115 kV100 MW4.3 yrs59.6
TAP159317Substation-Adjacent69 kV50 MW4.3 yrs59.0
TAP159363Substation-Adjacent69 kV50 MW4.3 yrs58.8
TAP159324Substation-Adjacent69 kV50 MW4.3 yrs58.6
UNKNOWN167855Substation-Adjacent69 kV50 MW4.3 yrs58.4
UNKNOWN157642Substation-Adjacent69 kV50 MW4.3 yrs58.1
TAP167853Substation-Adjacent69 kV50 MW4.3 yrs58.0
TAP167856Substation-Adjacent69 kV50 MW4.3 yrs58.0
TAP161879Substation-Adjacent69 kV50 MW4.3 yrs57.9
TAP167852Substation-Adjacent69 kV50 MW4.3 yrs57.6
UNKNOWN167854Substation-Adjacent69 kV50 MW4.3 yrs57.4
UNKNOWN162907Substation-Adjacent69 kV50 MW4.3 yrs56.2
TAP162905Substation-Adjacent69 kV50 MW4.3 yrs56.1
Greenfield (UNKNOWN131257 - UNKNOWN133793)Greenfield115 kV100 MW4.3 yrs54.0
Mine SiteFormer Mine——4.3 yrs54.0
Greenfield (UNKNOWN131257 - UNKNOWN133793)Greenfield115 kV100 MW4.3 yrs53.8

Every scored site in Clay County

All 22 sites, best first.

Clay County datacenter FAQ

How many datacenter sites are in Clay County?

22 scored datacenter candidate sites, averaging 58.1/100 DC Readiness. That is the 17th-most of 52 South Dakota counties with five or more sites.

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

OZ Clay scores 62.2/100 DC Readiness, the highest of the 22 scored sites in Clay County (a greenfield site).

Does Clay County offer datacenter tax incentives?

No state corporate income tax; no personal income tax; no personal property tax.

What is the natural-hazard risk in Clay County?

FEMA's National Risk Index rates Clay County as "Relatively Low" (score 22).

What are industrial electricity rates in Clay County?

Average industrial electricity is 8.10¢/kWh and commercial is 10.21¢/kWh in Clay County.

More in South Dakota

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 Clay County, South Dakota”, https://gridcensus.com/datacenter-sites/south-dakota/clay-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 Clay County, South Dakota 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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