Ohio Interconnection Projects
interXdata tracks 1,627 interconnection projects in Ohio representing 163,149 MW of requested capacity. The dominant technology by capacity is Gas. The most active counties are Butler, Montgomery, Madison.
1,627Total projects
148Active
621Operational
829Withdrawn
163,149 MWRequested capacity
18,014 MWActive capacity
Technology mix
| Technology | Projects | Requested capacity |
|---|---|---|
| Gas | 332 | 53,995 MW |
| Solar | 721 | 52,737 MW |
| Other | 259 | 22,179 MW |
| Wind | 145 | 18,405 MW |
| Battery | 148 | 12,516 MW |
| Coal | 8 | 2,291 MW |
| Solar+Battery | 10 | 942 MW |
| Nuclear | 3 | 74 MW |
| Solar+Wind | 1 | 10 MW |
Counties
| County | Projects | Requested capacity |
|---|---|---|
| Butler | 50 | 4,044 MW |
| Montgomery | 49 | 1,726 MW |
| Madison | 45 | 4,872 MW |
| Hardin | 43 | 3,813 MW |
| Highland | 43 | 4,388 MW |
| Pickaway | 41 | 5,800 MW |
| Paulding | 40 | 2,426 MW |
| Union | 38 | 4,921 MW |
| Hancock | 35 | 2,700 MW |
| Van Wert | 35 | 5,101 MW |
| Lucas | 35 | 7,971 MW |
| Ross | 33 | 2,106 MW |
| Wood | 33 | 3,635 MW |
| Trumbull | 32 | 7,736 MW |
| Champaign | 31 | 2,478 MW |
| Franklin | 31 | 1,717 MW |
| Defiance | 31 | 2,140 MW |
| Marion | 30 | 1,486 MW |
| Lorain | 30 | 1,587 MW |
| Williams | 30 | 695 MW |
| Cuyahoga | 28 | 297 MW |
| Logan | 26 | 2,541 MW |
| Clermont | 26 | 2,178 MW |
| Crawford | 25 | 2,761 MW |
| Licking | 24 | 1,670 MW |
| Henry | 23 | 1,491 MW |
| Hamilton | 22 | 2,692 MW |
| Ashtabula | 22 | 1,451 MW |
| Washington | 22 | 3,987 MW |
| Morrow | 21 | 1,724 MW |
| Darke | 21 | 1,278 MW |
| Jefferson | 20 | 6,060 MW |
| Adams | 20 | 2,262 MW |
| Brown | 19 | 935 MW |
| Summit | 19 | 847 MW |
| Huron | 18 | 2,723 MW |
| Fulton | 18 | 2,325 MW |
| Wayne | 18 | 539 MW |
| Muskingum | 17 | 2,851 MW |
| Richland | 17 | 727 MW |
Largest projects
| Project | Queue ID | Technology | Capacity | Status | Location |
|---|---|---|---|---|---|
| Sammis 345kV | R68 | Other | 1,940.0 MW | withdrawn | Jefferson, Ohio |
| W. H. Sammis 345kV | I07 | Other | 1,860.0 MW | withdrawn | Jefferson, Ohio |
| Bay Shore - Lallendorf 345 kV | AH1-690 - moved to TC2 | Gas | 1,475.0 MW | withdrawn | Lucas, Ohio |
| PJM Queue Project AH1-690 — Gas in Lucas, Ohio | AH1-690 | Gas | 1,475.0 MW | withdrawn | Lucas, Ohio |
| Perry | 6020_1 | Other | 1,311.6 MW | operational | Lake, Ohio |
| PJM Queue Project AH1-680 — Gas in Carroll, Ohio | AH1-680 | Gas | 1,300.0 MW | active | Carroll, Ohio |
| Gavin Power, LLC | 8102_1 | Other | 1,300.0 MW | operational | Gallia, Ohio |
| Sammis - South Canton 345 kV | AH1-680 - moved to TC2 | Gas | 1,300.0 MW | active | Carroll, Ohio |
| Gavin Power, LLC | 8102_2 | Other | 1,300.0 MW | operational | Gallia, Ohio |
| Killen 345kV | S12 | Other | 1,300.0 MW | withdrawn | Adams, Ohio |
| Marysville-Flatlick 765kV | AC1-096 | Gas | 1,277.0 MW | withdrawn | Pickaway, Ohio |
| Muskingum River 345 kV Phase I | AD1-090 | Gas | 1,260.0 MW | withdrawn | Washington, Ohio |
| Mountaineer-Belmont 765kV | N42 | Other | 1,200.0 MW | withdrawn | Meigs, Ohio |
| Marysville-Flatlick 765kV | AB2-080 | Gas | 1,200.0 MW | withdrawn | Pickaway, Ohio |
| MISO Queue Project G482 — Coal in Ashtabula, Ohio | G482 | Coal | 1,200.0 MW | withdrawn | Ashtabula, Ohio |
| Highland-Lordstown 1 & 2 345 kV | AE1-213 | Gas | 1,170.0 MW | withdrawn | Trumbull, Ohio |
| Highland-Lordstown 345 kV | AE2-013 | Gas | 1,170.0 MW | withdrawn | Trumbull, Ohio |
| Highland-Sammis 345kV | AA1-123 | Gas | 1,152.0 MW | operational | Columbiana, Ohio |
| Kammer-Vassell 765kV | AB2-067 | Gas | 1,100.0 MW | operational | Guernsey, Ohio |
| Nottingham 138kV | AC1-103 | Gas | 1,050.0 MW | withdrawn | Harrison, Ohio |
| Sammis–Star 345kV | Y2-085 | Gas | 1,050.0 MW | withdrawn | Carroll, Ohio |
| Sporn - Waterford 345kV | P54 | Other | 1,035.0 MW | withdrawn | Meigs, Ohio |
| Bayshore-GM Powertrain 138 kV & Lallendorf 345kV | AB1-107 | Gas | 955.0 MW | withdrawn | Lucas, Ohio |
| Highland-Hanna 345kV | AD2-057 | Gas | 940.0 MW | withdrawn | Trumbull, Ohio |
| Highland-Hanna 345kV | AB1-105 | Gas | 940.0 MW | operational | Trumbull, Ohio |
| Davis Besse | 6149_1 | Other | 925.2 MW | operational | Ottawa, Ohio |
| MISO Queue Project G083 — Other in Hamilton, Ohio | G083 | Other | 800.0 MW | withdrawn | Hamilton, Ohio |
| Highland-Sammis 345kV & Highland-Mansfield 345kV | Z2-028 | Gas | 800.0 MW | operational | Trumbull, Ohio |
| Zimmer 345 kV | AJ1-008 | Solar | 800.0 MW | withdrawn | Clermont, Ohio |
| Bay Shore-Fostoria Central 345kV & Bayshore-Monroe 345kV | Y1-069 | Gas | 799.0 MW | operational | Lucas, Ohio |
Top developers in Ohio
| Developer (canonical) | Projects | Capacity |
|---|---|---|
| Riverlake Energy, LLC | 7 | 631 MW |
| Invenergy | 6 | 337 MW |
| Cardinal Energy Storage East, LLC | 4 | 1,900 MW |
| TerraForm Twin Creeks Solar, LLC | 3 | 128 MW |
| Nextera | 2 | 410 MW |
| Butterfly Meadows Solar Project, LLC | 2 | 400 MW |
| Crossroads Solar I, LLC | 2 | 30 MW |
| Swamp Fox Solar, LLC | 2 | 50 MW |
| Energy Efficiency Solar, Inc. dba ACRO Energy Inc. | 2 | 400 MW |
| Troy Energy LLC | 2 | 658 MW |
| Mink Solar LLC | 2 | 324 MW |
| Orchid Acres Solar Project, LLC | 2 | 400 MW |
| JR ME LLC | 2 | 34 MW |
| Wombat Solar LLC | 2 | 514 MW |
| Hamden Energy LLC | 2 | 160 MW |
Recent material changes
| Observed | Project | Field | Old | New |
|---|---|---|---|---|
| 2026-08-26 | Cole 345 kV | capacity_mw | 50.0 | 40 |
| 2026-08-26 | Cole 345 kV | proposed_online_date | 2027-12-31 | 2027-12-30 |
| 2026-08-26 | Cole 345 kV | proposed_online_date | 2027-03-30 | 2027-12-30 |
| 2026-08-22 | Maddox Creek 345 kV | status | suspended | active |
| 2026-08-22 | Maddox Creek 345kV | status | suspended | active |
| 2026-08-22 | Maddox Creek 345 kV | proposed_online_date | 2024-11-30 | 2027-09-09 |
| 2026-08-22 | Maddox Creek 345kV | proposed_online_date | 2024-11-30 | 2027-09-09 |
| 2026-08-06 | Weston 69 kV | proposed_online_date | 2027-05-29 | — |
| 2026-08-06 | Weston 69 kV | status | active | operational |
| 2026-08-06 | Weston 69 kV | operational_date | — | 2027-05-29 |
| 2026-08-06 | Weston 69 kV II | status | active | operational |
| 2026-08-06 | Weston 69 kV II | proposed_online_date | 2028-06-01 | — |
Explore related data
Source last checked2026-07-31
Data last materially changed2026-08-27
Page data generated2026-08-27
Provenance: U.S. EIA — Form EIA-860M generator inventory (operating + planned); Lawrence Berkeley National Laboratory — Queued Up interconnection dataset; PJM — new-services interconnection queue. Values are normalized from public source records into the interXdata canonical warehouse; see each source for original filings.
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