Datacenter Sites in Lyman County, South Dakota
Lyman County has 27 scored datacenter candidate sites averaging 51.6/100 DC Readiness, with a catalogued aggregate of 0 MW. FEMA rates local natural-hazard risk as "Relatively Low". The county has a datacenter tax incentive on record.
At a glance
Lyman County, South Dakota has 27 scored datacenter candidate sites averaging 51.6/100 DC Readiness, roughly in line with the South Dakota average of 54.7. It ranks 13th of 52 South Dakota counties by number of sites and 48th by average score. The top-scoring site is OZ Lyman at 57.8/100.
Site-selection context for Lyman County
Incentive detail: No state corporate income tax; no personal income tax; no personal property tax.
How does Lyman County compare with other counties in South Dakota?
By number of scored sites, Lyman County ranks 13th of the 52 South Dakota counties with a county page, holding 2.3% of the state's 1,151 sites. Its average DC Readiness of 51.6/100 ranks 48th in the state and is roughly in line with the national average of 53.0. Nationally it has the 1383rd-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 1 score 55 or higher.
What types of datacenter sites are in Lyman County?
Former Mine sites are the most common (14, 52% of the county's inventory), followed by industrial (12) 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 Lyman County?
Industrial electricity averages 9.33¢/kWh and commercial 10.58¢/kWh. FEMA's National Risk Index rates the county "Relatively Low" (22). WRI water stress is low-medium. 4 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 $1,967 an acre.
By site type
Top datacenter sites in Lyman County
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| OZ Lyman | Greenfield | — | — | 4.3 yrs | 57.8 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 52.1 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 52.1 |
| Former Willis Vet supply | Industrial | — | — | 4.3 yrs | 51.9 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 51.7 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 51.7 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 51.7 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 51.7 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 51.7 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 51.7 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 51.7 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 51.7 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 51.7 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 51.7 |
| Former BIA Jail | Industrial | — | — | 4.3 yrs | 51.2 |
| Old Yellow School Building | Industrial | — | — | 4.3 yrs | 51.1 |
| Rodeo Dump | Industrial | — | — | 4.3 yrs | 51.1 |
| Former Housing Authority Building | Industrial | — | — | 4.3 yrs | 51.1 |
| Lower Brule Shooting Range | Industrial | — | — | 4.3 yrs | 51.1 |
| Kids Pond | Industrial | — | — | 4.3 yrs | 51.1 |
| Rodeo Grounds Dump | Industrial | — | — | 4.3 yrs | 51.1 |
| Former BIA Administration Building | Industrial | — | — | 4.3 yrs | 51.1 |
| Boys and Girls Club | Industrial | — | — | 4.3 yrs | 51.1 |
| Durkin Curve | Industrial | — | — | 4.3 yrs | 51.0 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 51.0 |
Every scored site in Lyman County
All 27 sites, best first.
- OZ Lyman · 57.8
- Mine Site · 489d8b9d · 52.1
- Mine Site · 7a54bfba · 52.1
- Former Willis Vet supply · 51.9
- Mine Site · 734da6f3 · 51.7
- Mine Site · 59842354 · 51.7
- Mine Site · 2b745d38 · 51.7
- Mine Site · 2a62de96 · 51.7
- Mine Site · f4677d29 · 51.7
- Mine Site · 847f052a · 51.7
- Mine Site · a7b27dc8 · 51.7
- Mine Site · 160f488e · 51.7
- Mine Site · 86f7a7ab · 51.7
- Mine Site · ad406d57 · 51.7
- Former BIA Jail · 51.2
- Old Yellow School Building · 51.1
- Rodeo Dump · 51.1
- Former Housing Authority Building · 51.1
- Lower Brule Shooting Range · 51.1
- Kids Pond · 51.1
- Rodeo Grounds Dump · 51.1
- Former BIA Administration Building · 51.1
- Boys and Girls Club · 51.1
- Durkin Curve · 51.0
- Mine Site · 0e8e83a5 · 51.0
- West Brule And Restricted Use Dump Site · 50.9
- Mine Site · d7c09567 · 50.6
Lyman County datacenter FAQ
How many datacenter sites are in Lyman County?
27 scored datacenter candidate sites, averaging 51.6/100 DC Readiness. That is the 13th-most of 52 South Dakota counties with five or more sites.
What is the highest-scoring datacenter site in Lyman County?
OZ Lyman scores 57.8/100 DC Readiness, the highest of the 27 scored sites in Lyman County (a greenfield site).
Does Lyman 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 Lyman County?
FEMA's National Risk Index rates Lyman County as "Relatively Low" (score 22).
What are industrial electricity rates in Lyman County?
Average industrial electricity is 9.33¢/kWh and commercial is 10.58¢/kWh in Lyman County.
More in South Dakota
- All datacenter sites in South Dakota· 1,151 sites
- Operating datacenters in South Dakota
- Electric substations in South Dakota
- Minnehaha County· 95 sites · avg 58.1
- Day County· 82 sites · avg 51.9
- Pennington County· 58 sites · avg 59.7
- Beadle County· 51 sites · avg 55.1
- Charles Mix County· 40 sites · avg 53.4
- Brown County· 37 sites · avg 57.4
- Former Mine sites in South Dakota
- Industrial sites 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 Lyman County, South Dakota”, https://gridcensus.com/datacenter-sites/south-dakota/lyman-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 Lyman 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.