How many datacenter sites are in Iowa?

GridCensus catalogs 2,572 scored datacenter candidate sites in Iowa, with an average DC Readiness score of 55.2/100.

What is the average interconnection-queue wait in Iowa?

Candidate sites in Iowa average a 2.5 yrs interconnection-queue wait, with an average queue depth of 113 projects.

What kind of datacenter sites are most common in Iowa?

Industrial sites are the most common category in Iowa (928 sites), and most sites fall within the MISO grid region.

Datacenter Sites in Iowa

Iowa has 2,572 scored datacenter candidate sites averaging 55.2/100 DC Readiness. Industrial parcels lead the inventory (928 sites). Most sites interconnect through MISO. The state's candidate sites carry a catalogued aggregate of 82.3k MW and average a 2.5 yrs interconnection-queue wait.

2,572

Candidate sites

55.2/100

Avg DC Readiness

82.3k MW

Catalogued capacity

theoretical aggregate

2.5 yrs

Avg queue wait

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Top 25 in Iowa

By site type

By grid region

MISO
2,553
PJM
9
SPP
6
CAISO
1
WECC
1
ISO-NE
1
SERC
1

Average sub-score profile

How Iowa's candidate sites score on each DC Readiness dimension (0–100 average).

Power availability

36.7

Speed-to-power

32.0

Fiber

77.3

Water

87.3

Hazard resilience

68.5

Top 25 datacenter sites in Iowa

Ranked by DC Readiness.

Top datacenter sites in Iowa
Site	Type	County	Voltage	Capacity	Queue wait	Score
WALTER SCOTT ENERGY CENTER	Substation-Adjacent	Mills County	345 kV	600 MW	2.8 yrs	69.8
UNKNOWN130427	Substation-Adjacent	Dakota County	345 kV	600 MW	2.8 yrs	68.4
BONDURANT	Substation-Adjacent	Polk County	345 kV	600 MW	2.8 yrs	67.8
GREATER DES MOINES ENERGY CENTER	Substation-Adjacent	Polk County	345 kV	600 MW	2.8 yrs	67.7
SE POLK	Substation-Adjacent	Polk County	345 kV	600 MW	2.8 yrs	67.6
UNKNOWN131416	Substation-Adjacent	Mills County	345 kV	600 MW	2.8 yrs	67.6
UNKNOWN137755	Substation-Adjacent	Mills County	345 kV	600 MW	2.8 yrs	67.5
Alliant SBD 9302 Aegon NP	Brownfield	Linn	—	1 MW	2.8 yrs	66.9
UNKNOWN131382	Substation-Adjacent	Scott County	345 kV	600 MW	2.8 yrs	66.8
TIFFIN	Substation-Adjacent	Johnson County	345 kV	600 MW	2.8 yrs	66.7
GRIMES	Substation-Adjacent	Dallas County	345 kV	600 MW	2.8 yrs	66.7
SIOUX CITY	Substation-Adjacent	Plymouth County	345 kV	600 MW	2.8 yrs	66.6
SYCAMORE	Substation-Adjacent	Polk County	345 kV	600 MW	2.8 yrs	66.6
BLACK HAWK	Substation-Adjacent	Black Hawk County	345 kV	600 MW	2.8 yrs	66.4
UNKNOWN131604	Substation-Adjacent	Scott County	345 kV	600 MW	2.8 yrs	66.3
SUB 91	Substation-Adjacent	Scott County	345 kV	600 MW	2.8 yrs	66.2
EC Near University of Iowa Main Power Plant	Greenfield	Johnson	—	—	1.4 yrs	65.8
HILLS	Substation-Adjacent	Johnson County	345 kV	600 MW	2.8 yrs	65.8
OZ Polk	Greenfield	Polk	—	—	1.4 yrs	65.7
ARNOLD	Substation-Adjacent	Linn County	345 kV	600 MW	2.8 yrs	65.6
UNKNOWN131605	Substation-Adjacent	Rock Island County	345 kV	600 MW	2.8 yrs	65.6
OZ Woodbury	Greenfield	Woodbury	—	—	1.4 yrs	65.6
Harriet Street Solar Field	Brownfield	Polk	69 kV	1 MW	2.8 yrs	65.6
NORWALK	Substation-Adjacent	Warren County	345 kV	600 MW	2.8 yrs	65.5
EC Coal Scott County	Greenfield	Scott County	—	—	1.4 yrs	65.5

Counties in Iowa

85 counties with five or more scored sites.

Black Hawk County126 · 57.1 Pottawattamie County123 · 55.7 Clinton County118 · 53.2 Johnson County112 · 56.6 Linn County105 · 57.3 Dubuque County101 · 54.7 Woodbury County94 · 56.7 Dallas County92 · 53.4 Polk County84 · 59.3 Webster County80 · 53.3 Marshall County70 · 53.0 Muscatine County62 · 56.3 Scott County61 · 58.1 Wapello County49 · 50.7 Story46 · 58.5 Sioux County39 · 54.0 Clayton38 · 54.6 Dickinson County38 · 57.2 Des Moines37 · 52.6 Buena Vista36 · 54.0 Mahaska County34 · 51.5 Bremer County32 · 58.6 O'Brien County32 · 57.1 Marion County30 · 53.9 Poweshiek30 · 57.5 Cass County27 · 55.2 Allamakee26 · 54.9 Cherokee County26 · 52.4 Jackson County26 · 54.8 Winnebago County26 · 57.9 Lee25 · 54.5 Adair24 · 53.2 Cedar24 · 59.5 Plymouth County23 · 57.2 Delaware22 · 57.0 Fayette County22 · 51.6 Shelby County22 · 54.0 Appanoose21 · 55.5 Emmet County21 · 58.4 Ida County20 · 53.6 Crawford County19 · 53.4 Monona County19 · 52.3 Sac County19 · 53.5 Henry County17 · 55.7 Warren County17 · 60.5 Iowa16 · 57.8 Adams15 · 56.9 Lyon County15 · 56.5 Carroll County14 · 53.7 Clay County14 · 58.1 Kossuth County14 · 56.4 Union14 · 56.7 Cerro Gordo County13 · 58.3 Hancock County13 · 55.7 Harrison County13 · 52.8 Benton County12 · 57.7 Winneshiek County12 · 48.9 Worth County12 · 57.8 Calhoun County11 · 54.2 Madison County11 · 56.6 Mills County11 · 61.5 Osceola County11 · 53.0 Davis County10 · 54.0 Floyd County10 · 53.4 Mitchell County10 · 52.9 Hardin County9 · 57.2 Clarke County8 · 53.2 Franklin County8 · 54.9 Boone County7 · 56.8 Chickasaw County7 · 51.0 Fremont County7 · 55.3 Jasper County7 · 54.9 Palo Alto County7 · 52.1 Pocahontas County7 · 54.8 Van Buren County7 · 52.0 Guthrie County6 · 52.7 Montgomery County6 · 53.0 Page County6 · 55.5 Wright County6 · 55.2 Audubon County5 · 52.5 Greene County5 · 53.7 Grundy County5 · 54.1 Howard County5 · 48.7 Louisa County5 · 54.1 Tama County5 · 53.2

Iowa datacenter site selection FAQ

How many datacenter sites are in Iowa?: GridCensus catalogs 2,572 scored datacenter candidate sites in Iowa, with an average DC Readiness score of 55.2/100.
What is the average interconnection-queue wait in Iowa?: Candidate sites in Iowa average a 2.5 yrs interconnection-queue wait, with an average queue depth of 113 projects.
What kind of datacenter sites are most common in Iowa?: Industrial sites are the most common category in Iowa (928 sites), and most sites fall within the MISO grid region.

Dataset updated August 2026. Screening estimates derived from public data sources.

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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.

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