Power by county

Iowa: data center power by county

Browse the 94 counties in Iowa with a data center power and grid screening profile. Compare substation counts and highest grid access voltage by county, then open a county for its full outlook.

State overview

Counties with a profile: 94 counties
Industrial retail rate (state industrial average): 7.2¢/kWh

The industrial retail rate is a state industrial average and applies to every county below. The per county figures are substation count and highest grid access voltage, which do vary by county.

Map

The same county map as the national page, framed to Iowa. Switch layers to compare substations, grid access voltage, and more; the color scale is the national one, so a county reads the same shade here as nationally. Click a county to open its profile.

Transmission voltage

Up to 69 kV
115 to 138 kV
161 to 230 kV
287 to 345 kV
345 to 500 kV
500 kV and up

Voltage not known

About this layer

Highest transmission voltage reachable in or crossing the county, in kilovolts.

Source

Source: public records

How to read this

Each color is one measured quantity for that county, shown so you can read it and judge for yourself. Click a county, or choose one from the picker, to open its panel. The color scale is the national one, so a Iowa county reads the same shade here as on the national map.

OverlayExisting data centers

Where data centers already stand. Off by default, and shown purely as background: the markers are context a reader can weigh, and this map draws no conclusions from them.

OverlayFreight rail

In-service freight mainline, the track heavy equipment like transformers and generator sets actually moves over. Off by default and shown purely as background: whether a line runs near a specific site is something to read off the map for yourself, not a judgment this map makes for you.

Counties

Sort by any column to browse. The order is a view of the data, not a ranking, and the list opens alphabetically by county. Select a county for its serving utilities, market, interconnection queue, and sources.

Published counties, sortable by county name, substation count, or highest grid access voltage. Listed for browsing, not ranked.

Adair	4	345 kV
Adams	5	345 kV
Allamakee	9	161 kV
Appanoose	4	161 kV
Audubon	3	161 kV
Benton	14	345 kV
Black Hawk	19	345 kV
Boone	11	345 kV
Bremer	10	345 kV
Buchanan	3	345 kV
Buena Vista	31	161 kV
Butler	4	161 kV
Calhoun	13	345 kV
Carroll	15	161 kV
Cass	11	345 kV
Cedar	10	115 kV
Cerro Gordo	23	161 kV
Cherokee	22	345 kV
Chickasaw	3	345 kV
Clarke	9	69 kV
Clay	25	345 kV
Clayton	22	345 kV
Clinton	26	345 kV
Crawford	29	161 kV
Dallas	14	345 kV
Davis	11	161 kV
Delaware	3	345 kV
Des Moines	10	161 kV
Dickinson	33	345 kV
Dubuque	41	345 kV
Emmet	9	69 kV
Fayette	6	345 kV
Floyd	7	161 kV
Franklin	14	161 kV
Fremont	4	69 kV
Greene	9	161 kV
Grundy	12	161 kV
Guthrie	3	161 kV
Hancock	20	161 kV
Hardin	15	161 kV
Harrison	18	69 kV
Henry	9	345 kV
Howard	6	345 kV
Humboldt	3	345 kV
Ida	24	345 kV
Iowa	9	345 kV
Jackson	10	345 kV
Jasper	13	345 kV
Jefferson	8	161 kV
Johnson	23	345 kV
Jones	16	161 kV
Kossuth	8	345 kV
Lee	11	345 kV
Linn	70	345 kV
Louisa	5	345 kV
Lucas	3	161 kV
Lyon	18	345 kV
Madison	5	345 kV
Mahaska	10	345 kV
Marion	18	69 kV
Marshall	13	161 kV
Mills	5	161 kV
Mitchell	8	345 kV
Monona	22	161 kV
Monroe	5	161 kV
Montgomery	16	161 kV
Muscatine	28	345 kV
O'Brien	25	345 kV
Osceola	9	345 kV
Page	6	345 kV
Palo Alto	9	345 kV
Plymouth	40	345 kV
Pocahontas	8	161 kV
Polk	58	345 kV
Pottawattamie	43	345 kV
Poweshiek	8	345 kV
Ringgold	1	161 kV
Sac	23	345 kV
Scott	24	345 kV
Shelby	35	161 kV
Sioux	46	230 kV
Story	23	161 kV
Tama	5	161 kV
Union	8	345 kV
Van Buren	11	69 kV
Wapello	9	345 kV
Warren	4	345 kV
Washington	6	345 kV
Webster	13	345 kV
Winnebago	18	69 kV
Winneshiek	6	161 kV
Woodbury	45	345 kV
Worth	10	161 kV
Wright	13	161 kV

What this is

These are screening-grade grid profiles for Iowa, describing the public power picture around each county rather than any specific parcel. They are a starting point for siting diligence, not a substitute for an interconnection study. To screen a specific address, run it through the site tool.

Map