Datacenter Sites in Warren County, Iowa
Warren County has 17 scored datacenter candidate sites averaging 60.7/100 DC Readiness, with a catalogued aggregate of 863 MW. FEMA rates local natural-hazard risk as "Relatively Moderate". The county has a datacenter tax incentive on record.
At a glance
Warren County, Iowa has 17 scored datacenter candidate sites averaging 60.7/100 DC Readiness, roughly in line with the Iowa average of 56.3. It ranks 44th of 85 Iowa counties by number of sites and 2nd by average score. The top-scoring site is NORWALK at 66.9/100.
Site-selection context for Warren County
Incentive detail: Sales tax exemption on DC equipment for $1M+ investments; property tax phase-in for new construction.
How does Warren County compare with other counties in Iowa?
By number of scored sites, Warren County ranks 44th of the 85 Iowa counties with a county page, holding 0.7% of the state's 2,572 sites. Its average DC Readiness of 60.7/100 ranks 2nd in the state and is about 15% above the national average of 53.0. Nationally it has the 1896th-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 17 score 55 or higher.
What types of datacenter sites are in Warren County?
Greenfield sites are the most common (13, 76% of the county's inventory), followed by substation-adjacent (3) and brownfield (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 Warren County?
Industrial electricity averages 6.38¢/kWh and commercial 9.20¢/kWh. FEMA's National Risk Index rates the county "Relatively Moderate" (30). WRI water stress is low. 10 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 $7,820 an acre.
By site type
Top datacenter sites in Warren County
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| NORWALK | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 66.9 |
| EC Near Indianola | Greenfield | — | — | 4.3 yrs | 62.8 |
| EC Near Indianola | Greenfield | — | — | 4.3 yrs | 62.0 |
| EC Near Indianola | Greenfield | — | — | 4.3 yrs | 62.0 |
| UNKNOWN130807 | Substation-Adjacent | 161 kV | 100 MW | 4.3 yrs | 61.9 |
| EC Near Indianola | Greenfield | — | — | 4.3 yrs | 61.6 |
| EC Near Indianola | Greenfield | — | — | 4.3 yrs | 61.5 |
| EC Near Indianola | Greenfield | — | — | 4.3 yrs | 61.1 |
| Indianola | Brownfield | — | 13 MW | 4.3 yrs | 60.7 |
| EC Near Indianola | Greenfield | — | — | 4.3 yrs | 60.6 |
| EC Near Indianola | Greenfield | — | — | 4.3 yrs | 60.5 |
| EC Near Indianola | Greenfield | — | — | 4.3 yrs | 60.3 |
| EC Near Indianola | Greenfield | — | — | 4.3 yrs | 59.9 |
| UNKNOWN157498 | Substation-Adjacent | 69 kV | 50 MW | 4.3 yrs | 59.1 |
| EC Near Indianola | Greenfield | — | — | 4.3 yrs | 58.5 |
| EC Near Indianola | Greenfield | — | — | 4.3 yrs | 56.9 |
| Greenfield (NORWALK - BOONEVILLE) | Greenfield | 161 kV | 100 MW | 4.3 yrs | 56.3 |
Every scored site in Warren County
All 17 sites, best first.
- NORWALK · 66.9
- EC Near Indianola · 1e856aad · 62.8
- EC Near Indianola · 8a607cb8 · 62.0
- EC Near Indianola · 68cbe684 · 62.0
- Substation-Adjacent site · 337c004e · 61.9
- EC Near Indianola · f5d2d2f7 · 61.6
- EC Near Indianola · 4c49ea06 · 61.5
- EC Near Indianola · 307ea3bf · 61.1
- Indianola · 60.7
- EC Near Indianola · 9f6e9aa7 · 60.6
- EC Near Indianola · 617b28b1 · 60.5
- EC Near Indianola · 0925657b · 60.3
- EC Near Indianola · 6b235f2f · 59.9
- Substation-Adjacent site · 036f7e4a · 59.1
- EC Near Indianola · 827fe6f3 · 58.5
- EC Near Indianola · 33f2ca1c · 56.9
- Greenfield (NORWALK - BOONEVILLE) · 56.3
Warren County datacenter FAQ
How many datacenter sites are in Warren County?
17 scored datacenter candidate sites, averaging 60.7/100 DC Readiness. That is the 44th-most of 85 Iowa counties with five or more sites.
What is the highest-scoring datacenter site in Warren County?
NORWALK scores 66.9/100 DC Readiness, the highest of the 17 scored sites in Warren County (a substation-adjacent site).
Does Warren 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 Warren County?
FEMA's National Risk Index rates Warren County as "Relatively Moderate" (score 30).
What are industrial electricity rates in Warren County?
Average industrial electricity is 6.38¢/kWh and commercial is 9.20¢/kWh in Warren 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
- Greenfield sites in Iowa
- Substation-Adjacent 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 Warren County, Iowa”, https://gridcensus.com/datacenter-sites/iowa/warren-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 Warren 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.