Iowa Interconnection Projects
interXdata tracks 1,234 interconnection projects in Iowa representing 126,675 MW of requested capacity. The dominant technology by capacity is Wind. The most active counties are Linn, Story, Marshall.
1,234Total projects
24Active
908Operational
294Withdrawn
126,675 MWRequested capacity
5,604 MWActive capacity
Technology mix
| Technology | Projects | Requested capacity |
|---|---|---|
| Wind | 448 | 65,992 MW |
| Gas | 185 | 21,127 MW |
| Other | 416 | 17,311 MW |
| Solar | 114 | 12,083 MW |
| Battery | 46 | 5,657 MW |
| Coal | 10 | 3,407 MW |
| Nuclear | 2 | 706 MW |
| Gas+Other Storage | 1 | 270 MW |
| Diesel | 11 | 68 MW |
| Hydro | 1 | 55 MW |
Counties
| County | Projects | Requested capacity |
|---|---|---|
| Linn | 57 | 6,890 MW |
| Story | 43 | 1,501 MW |
| Marshall | 39 | 5,923 MW |
| Adair | 38 | 5,847 MW |
| Polk | 35 | 1,754 MW |
| Cerro Gordo | 28 | 8,280 MW |
| Lee | 26 | 1,025 MW |
| Winnebago | 26 | 1,476 MW |
| Marion | 26 | 155 MW |
| Franklin | 26 | 3,827 MW |
| Jackson | 25 | 253 MW |
| Black Hawk | 24 | 1,214 MW |
| Johnson | 23 | 1,122 MW |
| Bremer | 22 | 84 MW |
| Dubuque | 22 | 607 MW |
| Mitchell | 21 | 2,232 MW |
| Poweshiek | 21 | 1,468 MW |
| Henry | 20 | 436 MW |
| Muscatine | 19 | 1,295 MW |
| Tama | 19 | 1,866 MW |
| Palo Alto | 18 | 1,595 MW |
| Worth | 18 | 1,870 MW |
| Pocahontas | 18 | 4,176 MW |
| Hancock | 18 | 3,283 MW |
| Howard | 17 | 2,113 MW |
| Clinton | 16 | 3,591 MW |
| Cass | 16 | 930 MW |
| Carroll | 16 | 718 MW |
| Dickinson | 15 | 609 MW |
| Osceola | 15 | 595 MW |
| Kossuth | 15 | 932 MW |
| Pottawattamie | 14 | 4,774 MW |
| Iowa | 14 | 524 MW |
| Webster | 13 | 1,995 MW |
| Madison | 13 | 689 MW |
| Page | 13 | 459 MW |
| Adams | 13 | 855 MW |
| Greene | 13 | 939 MW |
| Boone | 12 | 1,152 MW |
| Taylor | 12 | 1,422 MW |
Largest projects
| Project | Queue ID | Technology | Capacity | Status | Location |
|---|---|---|---|---|---|
| MISO Queue Project PQ0002 — Other in Cerro Gordo, Iowa | PQ0002 | Other | 2,000.0 MW | withdrawn | Cerro Gordo, Iowa |
| Paddtown I Wind 1500 MW | T92 | Wind | 1,500.0 MW | withdrawn | Pocahontas, Iowa |
| Paddtown II Wind 1500 MW | T93 | Wind | 1,500.0 MW | withdrawn | Pocahontas, Iowa |
| MISO Queue Project J116 — Wind in Hancock, Iowa | J116 | Wind | 999.0 MW | withdrawn | Hancock, Iowa |
| MISO Queue Project E0025 — Gas in Linn, Iowa | E0025 | Gas | 986.9 MW | withdrawn | Linn, Iowa |
| MISO Queue Project E0050 — Gas in Linn, Iowa | E0050 | Gas | 986.9 MW | active | Linn, Iowa |
| Walter Scott Jr Energy Center | 1082_4 | Other | 922.5 MW | operational | Pottawattamie, Iowa |
| MISO Queue Project G718 — Coal in Wapello, Iowa | G718 | Coal | 900.0 MW | withdrawn | Wapello, Iowa |
| Louisa | 6664_1 | Other | 811.9 MW | operational | Louisa, Iowa |
| MISO Queue Project J363 — Gas in Pottawattamie, Iowa | J363 | Gas | 810.0 MW | withdrawn | Pottawattamie, Iowa |
| MISO Queue Project J355 — Gas in Adair, Iowa | J355 | Gas | 810.0 MW | withdrawn | Adair, Iowa |
| MISO Queue Project E0049 — Gas in Cerro Gordo, Iowa | E0049 | Gas | 798.1 MW | active | Cerro Gordo, Iowa |
| MISO Queue Project E0010 — Gas in Marshall, Iowa | E0010 | Gas | 798.1 MW | active | Marshall, Iowa |
| Killdeer | J4113 | Gas | 787.4 MW | operational | Cerro Gordo, Iowa |
| MISO Queue Project G589 — Coal in Black Hawk, Iowa | G589 | Coal | 750.0 MW | withdrawn | Black Hawk, Iowa |
| Ottumwa | 6254_1 | Other | 725.9 MW | operational | Wapello, Iowa |
| Walter Scott Jr Energy Center | 1082_3 | Other | 725.8 MW | operational | Pottawattamie, Iowa |
| MISO Queue Project J233 — Gas in Marshall, Iowa | J233 | Gas | 700.0 MW | operational | Marshall, Iowa |
| George Neal South | 7343_4 | Other | 695.9 MW | operational | Woodbury, Iowa |
| Linn County Generating Facility | E0009 | Nuclear | 675.5 MW | withdrawn | Linn, Iowa |
| MISO Queue Project G219 — Gas in Johnson, Iowa | G219 | Gas | 650.0 MW | withdrawn | Johnson, Iowa |
| MISO Queue Project G220 — Other in Buchanan, Iowa | G220 | Other | 650.0 MW | withdrawn | Buchanan, Iowa |
| Duane Arnold 161 kV | J3932 | Other | 646.0 MW | operational | Linn, Iowa |
| MISO Queue Project G179 — Gas in Clinton, Iowa | G179 | Gas | 600.0 MW | withdrawn | Clinton, Iowa |
| MISO Queue Project G186 — Gas in Cerro Gordo, Iowa | G186 | Gas | 600.0 MW | operational | Cerro Gordo, Iowa |
| MISO Queue Project G178 — Other in Clinton, Iowa | G178 | Other | 600.0 MW | withdrawn | Clinton, Iowa |
| MISO Queue Project G127 — Other in Des Moines, Iowa | G127 | Other | 600.0 MW | withdrawn | Des Moines, Iowa |
| MISO Queue Project G720 — Coal in Marshall, Iowa | G720 | Coal | 600.0 MW | withdrawn | Marshall, Iowa |
| MISO Queue Project G182 — Gas in Buchanan, Iowa | G182 | Gas | 600.0 MW | withdrawn | Buchanan, Iowa |
| MISO Queue Project G187 — Other in Muscatine, Iowa | G187 | Other | 600.0 MW | withdrawn | Muscatine, Iowa |
Top developers in Iowa
| Developer (canonical) | Projects | Capacity |
|---|---|---|
| Interstate Power and Light Co | 5 | 3,930 MW |
| MidAmerican Energy Company | 1 | 265 MW |
| Highland Wind Energy L | 1 | 150 MW |
| City of Laurens, IA | 1 | 7 MW |
| Nextera | 1 | 676 MW |
| City of Manning, IA | 1 | 6 MW |
Recent material changes
No material field-level changes have been recorded against these projects since the baseline snapshot. interXdata records changes as new source snapshots are ingested and diffed.
Explore related data
Source last checked2026-07-31
Data last materially changed2026-08-27
Page data generated2026-08-27
Provenance: aeci-oasis; U.S. EIA — Form EIA-860M generator inventory (operating + planned); Lawrence Berkeley National Laboratory — Queued Up interconnection dataset; MISO — generator interconnection queue; PJM — new-services interconnection queue; Southwest Power Pool — generator interconnection queue. Values are normalized from public source records into the interXdata canonical warehouse; see each source for original filings.
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