Datacenter Sites in Harrison County, Iowa
Harrison County has 13 scored datacenter candidate sites averaging 54.2/100 DC Readiness, with a catalogued aggregate of 600 MW. FEMA rates local natural-hazard risk as "Relatively Moderate". The county has a datacenter tax incentive on record.
At a glance
Harrison County, Iowa has 13 scored datacenter candidate sites averaging 54.2/100 DC Readiness, roughly in line with the Iowa average of 56.3. It ranks 53rd of 85 Iowa counties by number of sites and 69th by average score. The top-scoring site is MISSOURI VALLEY at 55.8/100.
Site-selection context for Harrison County
Incentive detail: Sales tax exemption on DC equipment for $1M+ investments; property tax phase-in for new construction.
How does Harrison County compare with other counties in Iowa?
By number of scored sites, Harrison County ranks 53rd of the 85 Iowa counties with a county page, holding 0.5% of the state's 2,572 sites. Its average DC Readiness of 54.2/100 ranks 69th in the state and is roughly in line with the national average of 53.0. Nationally it has the 2184th-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 3 score 55 or higher.
What types of datacenter sites are in Harrison County?
Substation-Adjacent sites are the most common (12, 92% of the county's inventory), followed by 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 Harrison County?
Industrial electricity averages 6.05¢/kWh and commercial 8.43¢/kWh. FEMA's National Risk Index rates the county "Relatively Moderate" (30). WRI water stress is low. 5 fiber providers report service in the county. The climate runs 900 cooling degree days a year with a mean temperature of 48°F. Land is valued around $8,414 an acre.
By site type
Top datacenter sites in Harrison County
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| MISSOURI VALLEY | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 55.8 |
| UNKNOWN167619 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 55.2 |
| UNKNOWN157492 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 55.1 |
| TAP167617 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 54.7 |
| UNKNOWN159233 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 54.7 |
| UNKNOWN159232 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 54.6 |
| TAP167621 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 54.6 |
| TAP167612 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 54.0 |
| TAP167618 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 53.9 |
| TAP167611 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 53.9 |
| TAP159234 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 53.7 |
| UNKNOWN160020 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 53.7 |
| Mine Site | Former Mine | — | — | 4.3 yrs | 51.0 |
Every scored site in Harrison County
All 13 sites, best first.
- MISSOURI VALLEY · 55.8
- Substation-Adjacent site · e4a1ff7b · 55.2
- Substation-Adjacent site · fb9cf27c · 55.1
- Substation-Adjacent site · f638f610 · 54.7
- Substation-Adjacent site · 07c97e2b · 54.7
- Substation-Adjacent site · bedf0ac8 · 54.6
- Substation-Adjacent site · a654874c · 54.6
- Substation-Adjacent site · 09425350 · 54.0
- Substation-Adjacent site · 0d630dc9 · 53.9
- Substation-Adjacent site · 610a704b · 53.9
- Substation-Adjacent site · 01f737ad · 53.7
- Substation-Adjacent site · 3a2804fa · 53.7
- Mine Site · b8db5e24 · 51.0
Harrison County datacenter FAQ
How many datacenter sites are in Harrison County?
13 scored datacenter candidate sites, averaging 54.2/100 DC Readiness. That is the 53rd-most of 85 Iowa counties with five or more sites.
What is the highest-scoring datacenter site in Harrison County?
MISSOURI VALLEY scores 55.8/100 DC Readiness, the highest of the 13 scored sites in Harrison County (a substation-adjacent site).
Does Harrison County offer datacenter tax incentives?
Sales tax exemption on DC equipment for $1M+ investments; property tax phase-in for new construction.
What is the natural-hazard risk in Harrison County?
FEMA's National Risk Index rates Harrison County as "Relatively Moderate" (score 30).
What are industrial electricity rates in Harrison County?
Average industrial electricity is 6.05¢/kWh and commercial is 8.43¢/kWh in Harrison County.
More in Iowa
- All datacenter sites in Iowa· 2,572 sites
- Operating datacenters in Iowa
- Electric substations in Iowa
- Black Hawk County· 126 sites · avg 58.4
- Pottawattamie County· 123 sites · avg 57.0
- Clinton County· 118 sites · avg 54.2
- Johnson County· 112 sites · avg 57.9
- Linn County· 105 sites · avg 58.3
- Dubuque County· 101 sites · avg 55.8
- Substation-Adjacent sites in Iowa
- Former Mine sites in Iowa
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 Harrison County, Iowa”, https://gridcensus.com/datacenter-sites/iowa/harrison-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 Harrison County, Iowa 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.