Iowa interconnection queue
80 interconnection applications are pending in Iowa, requesting 15.3 GW of new generating capacity across 21 counties, as of 15 August 2026. That places Iowa #33 of 47 states by capacity queued.
Pending applications
80
of 258 ever filed
Capacity queued
15.3 GW
requested, not committed
Already built
5.2 GW
44 connected
Built vs decided
24.7%
134 withdrawn
Counties in the queue
21
with five or more filings
Large load requested
none recorded
0 requests
Source: the interconnection queues of every transmission provider operating in Iowa. Parsed and normalised by Watt Street. Data as of 15 August 2026.
Which queues serve Iowa
What is waiting in Iowa, by fuel
| Fuel | Projects | Capacity requested |
|---|---|---|
| Solar | 35 | 5.7 GW |
| Wind | 25 | 5.2 GW |
| Gas | 13 | 2.6 GW |
| Nuclear | 5 | 1.3 GW |
| Hybrid | 2 | 513 MW |
Counties with the most capacity queued
| County | Pending | Capacity queued | Already built |
|---|---|---|---|
| Linn County | 10 | 2.3 GW | 295 MW |
| Cerro Gordo County | 5 | 1.4 GW | 0 MW |
| Washington County | 3 | 1.1 GW | 0 MW |
| Marshall County | 4 | 717 MW | 0 MW |
| Clinton County | 3 | 610 MW | 600 MW |
| Franklin County | 3 | 560 MW | 0 MW |
| Webster County | 2 | 470 MW | 0 MW |
| Story County | 2 | 400 MW | 0 MW |
| Muscatine County | 3 | 329 MW | 250 MW |
| Dubuque County | 2 | 260 MW | 0 MW |
| Worth County | 1 | 230 MW | 545 MW |
| Palo Alto County | 1 | 200 MW | 450 MW |
| Pottawattamie County | 1 | 200 MW | 0 MW |
| Pocahontas County | 1 | 156 MW | 7 MW |
| Howard County | 1 | 155 MW | 220 MW |
| Tama County | 1 | 100 MW | 169 MW |
| Clay County | 0 | 0 MW | 45 MW |
| Crawford County | 0 | 0 MW | 6 MW |
| Des Moines County | 0 | 0 MW | 50 MW |
| Hancock County | 0 | 0 MW | 0 MW |
| Mills County | 0 | 0 MW | 50 MW |
Data centre campuses recorded in Iowa
| Campus | Operator | Reported demand |
|---|---|---|
| Google Council Bluffs (East) | 237 MW | |
| Microsoft Project Osmium | Microsoft | 190 MW |
| Google Cedar Rapids | 0 MW | |
| QTS Cedar Rapids | 0 MW |
A campus is tagged as a data centre by our classification, not by the operator’s own statement. 44 of the 72 campuses we hold carry coordinates, so only those can be mapped.
Iowa on the map
Every application above is plotted, searchable and clickable.