Datacenter Sites in Iowa
Iowa has 2,493 scored datacenter candidate sites averaging 55.3/100 DC Readiness. Greenfield parcels lead the inventory (1,018 sites). Most sites interconnect through MISO. The state's candidate sites carry a catalogued aggregate of 193.2k MW and average a 1.6 yrs interconnection-queue wait.
2,493
Candidate sites
55.3/100
Avg DC Readiness
193.2k MW
Catalogued capacity
theoretical aggregate
1.6 yrs
Avg queue wait
By site type
- Greenfield1,018
- Industrial928
- Substation-Adjacent282
- Former Mine200
- Brownfield54
- Shovel-Ready11
Average sub-score profile
How Iowa's candidate sites score on each DC Readiness dimension (0–100 average).
Power availability
36.2
Speed-to-power
49.7
Fiber
64.9
Water
70.7
Hazard resilience
58.7
Top 25 datacenter sites in Iowa
Ranked by DC Readiness.
| Site | Type | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|
| GRIMES | Substation-Adjacent | Mills County | 345 kV | 600 MW | 3.5 yrs | 79.4 |
| TIFFIN | Substation-Adjacent | Johnson County | 345 kV | 600 MW | 1.4 yrs | 78.6 |
| UNKNOWN131605 | Substation-Adjacent | Scott County | 345 kV | 600 MW | 1.4 yrs | 78.4 |
| UNKNOWN163571 | Substation-Adjacent | Mills County | 345 kV | 600 MW | 3.5 yrs | 78.1 |
| SYCAMORE | Substation-Adjacent | Polk County | 345 kV | 600 MW | 1.4 yrs | 78.0 |
| WALTER SCOTT ENERGY CENTER | Substation-Adjacent | Mills County | 345 kV | 600 MW | 3.5 yrs | 77.9 |
| BONDURANT | Substation-Adjacent | Polk County | 345 kV | 600 MW | 1.4 yrs | 77.7 |
| SE POLK | Substation-Adjacent | Polk County | 345 kV | 600 MW | 1.4 yrs | 77.3 |
| SIOUX CITY | Substation-Adjacent | Plymouth County | 345 kV | 600 MW | 3.5 yrs | 77.1 |
| UNKNOWN131416 | Substation-Adjacent | Mills County | 345 kV | 600 MW | 3.5 yrs | 76.7 |
| UNKNOWN122189 | Substation-Adjacent | Clinton County | 345 kV | 600 MW | 1.4 yrs | 76.6 |
| HAZLETON | Substation-Adjacent | Black Hawk County | 345 kV | 600 MW | 1.4 yrs | 76.6 |
| SUB 91 | Substation-Adjacent | Scott County | 345 kV | 600 MW | 1.4 yrs | 76.4 |
| BLACK HAWK | Substation-Adjacent | Black Hawk County | 345 kV | 600 MW | 1.4 yrs | 76.2 |
| UNKNOWN131604 | Substation-Adjacent | Scott County | 345 kV | 600 MW | 1.4 yrs | 75.8 |
| TAP140530 | Substation-Adjacent | Washington County | 345 kV | 600 MW | 1.4 yrs | 75.7 |
| O'BRIEN | Substation-Adjacent | O'Brien County | 345 kV | 600 MW | 1.4 yrs | 75.6 |
| HILLS | Substation-Adjacent | Johnson County | 345 kV | 600 MW | 1.4 yrs | 75.6 |
| UNKNOWN131373 | Substation-Adjacent | Jackson County | 345 kV | 600 MW | 1.4 yrs | 75.4 |
| DES MOINES | Substation-Adjacent | Polk County | 345 kV | 600 MW | 1.4 yrs | 75.3 |
| NORWALK | Substation-Adjacent | Warren County | 345 kV | 600 MW | 1.4 yrs | 75.2 |
| UNKNOWN130479 | Substation-Adjacent | Lyon County | 230 kV | 300 MW | 1.0 yrs | 75.0 |
| LEHIGH | Substation-Adjacent | Webster County | 345 kV | 600 MW | 1.4 yrs | 75.0 |
| BOONEVILLE | Substation-Adjacent | Madison County | 345 kV | 600 MW | 1.4 yrs | 74.8 |
| ARNOLD | Substation-Adjacent | Linn County | 345 kV | 600 MW | 1.4 yrs | 74.8 |
Counties in Iowa
85 counties with five or more scored sites.
Black Hawk County133 · 53.1Clinton County122 · 48.2Johnson County120 · 52.7Pottawattamie County119 · 51.3Linn County105 · 57.1Dallas County96 · 48.2Webster County94 · 50.6Woodbury County94 · 54.8Dubuque County90 · 52.6Polk County81 · 60.4Marshall County74 · 49.0Scott County69 · 56.8Muscatine County64 · 56.8Wapello County50 · 45.0Story County48 · 59.7Des Moines County39 · 50.7Poweshiek38 · 59.9Adair37 · 56.9Mahaska County37 · 49.0Fayette County30 · 49.8Bremer29 · 60.5Cedar29 · 61.2Jackson County29 · 54.0Allamakee28 · 58.3Delaware28 · 58.3Cass County27 · 59.4Lee27 · 56.1Clayton25 · 52.5Madison County22 · 64.2Plymouth County22 · 65.7Appanoose21 · 55.1Marion21 · 54.1Cerro Gordo County20 · 65.5Iowa County20 · 61.2O'Brien County20 · 61.4Buena Vista19 · 60.3Henry County19 · 59.9Cherokee County18 · 50.9Kossuth18 · 60.2Warren18 · 64.8Adams17 · 61.9Boone County17 · 62.3Jasper County17 · 63.3Dickinson County16 · 59.8Tama County16 · 60.5Union County16 · 60.3Clay County15 · 63.1Emmet15 · 59.8Winnebago County15 · 59.6Benton County13 · 63.1Mills County13 · 68.2Winneshiek County13 · 44.3Worth County13 · 64.3Chickasaw County12 · 55.8Hardin County12 · 57.7Sac County12 · 55.9Buchanan County11 · 66.4Greene County11 · 59.2Mitchell County11 · 49.5Page County11 · 62.7Palo Alto County11 · 54.5Floyd County10 · 54.3Lyon County10 · 67.8Guthrie County9 · 56.3Carroll County8 · 56.1Crawford County8 · 59.8Grundy County8 · 57.5Hancock County8 · 59.0Humboldt County8 · 67.6Ida County8 · 61.4Louisa County8 · 58.4Sioux County8 · 54.9Franklin County7 · 67.3Jones County7 · 55.8Shelby County7 · 59.4Wright County7 · 55.2Calhoun County6 · 64.1Howard County6 · 53.9Jefferson County6 · 53.7Monroe County6 · 52.7Montgomery County6 · 57.3Osceola County6 · 52.0Taylor County6 · 61.6Washington County6 · 57.4Pocahontas County5 · 58.7
Iowa datacenter site selection FAQ
- How many datacenter sites are in Iowa?
- GridCensus catalogs 2,493 scored datacenter candidate sites in Iowa, with an average DC Readiness score of 55.3/100.
- What is the average interconnection-queue wait in Iowa?
- Candidate sites in Iowa average a 1.6 yrs interconnection-queue wait, with an average queue depth of 22 projects.
- What kind of datacenter sites are most common in Iowa?
- Greenfield sites are the most common category in Iowa (1,018 sites), and most sites fall within the MISO grid region.
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for Iowa. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.