interXdata

Ohio Interconnection Projects

interXdata tracks 1,629 interconnection projects in Ohio representing 163,344 MW of requested capacity. The dominant technology by capacity is Gas. The most active counties are Butler, Montgomery, Madison.

1,629Total projects
139Active
623Operational
841Withdrawn
163,344 MWRequested capacity
17,005 MWActive capacity

Technology mix

TechnologyProjectsRequested capacity
Gas33253,995 MW
Solar72252,828 MW
Other25922,179 MW
Wind14618,509 MW
Battery14812,516 MW
Coal82,291 MW
Solar+Battery10942 MW
Nuclear374 MW
Solar+Wind110 MW

Counties

CountyProjectsRequested capacity
Butler504,044 MW
Montgomery491,726 MW
Madison454,872 MW
Highland434,388 MW
Hardin433,813 MW
Paulding412,566 MW
Pickaway415,800 MW
Union384,921 MW
Lucas357,971 MW
Hancock352,700 MW
Van Wert355,101 MW
Ross332,106 MW
Wood333,635 MW
Trumbull327,736 MW
Franklin311,717 MW
Champaign312,478 MW
Defiance312,140 MW
Lorain301,587 MW
Marion301,486 MW
Williams30695 MW
Cuyahoga28297 MW
Clermont262,178 MW
Logan262,541 MW
Crawford252,761 MW
Licking241,660 MW
Henry231,491 MW
Hamilton222,692 MW
Ashtabula221,451 MW
Washington223,987 MW
Darke211,278 MW
Morrow211,724 MW
Jefferson206,060 MW
Adams202,262 MW
Summit19847 MW
Brown19935 MW
Huron182,723 MW
Wayne18539 MW
Fulton182,325 MW
Richland17727 MW
Muskingum172,851 MW

Largest projects

ProjectQueue IDTechnologyCapacityStatusLocation
Sammis 345kVR68Other1,940.0 MWwithdrawnJefferson, Ohio
W. H. Sammis 345kVI07Other1,860.0 MWwithdrawnJefferson, Ohio
PJM Queue Project AH1-690 — Gas in Lucas, OhioAH1-690Gas1,475.0 MWwithdrawnLucas, Ohio
Bay Shore - Lallendorf 345 kVAH1-690 - moved to TC2Gas1,475.0 MWwithdrawnLucas, Ohio
Perry6020_1Other1,311.6 MWoperationalLake, Ohio
Gavin Power, LLC8102_2Other1,300.0 MWoperationalGallia, Ohio
PJM Queue Project AH1-680 — Gas in Carroll, OhioAH1-680Gas1,300.0 MWactiveCarroll, Ohio
Killen 345kVS12Other1,300.0 MWwithdrawnAdams, Ohio
Gavin Power, LLC8102_1Other1,300.0 MWoperationalGallia, Ohio
Sammis - South Canton 345 kVAH1-680 - moved to TC2Gas1,300.0 MWactiveCarroll, Ohio
Marysville-Flatlick 765kVAC1-096Gas1,277.0 MWwithdrawnPickaway, Ohio
Muskingum River 345 kV Phase IAD1-090Gas1,260.0 MWwithdrawnWashington, Ohio
Mountaineer-Belmont 765kVN42Other1,200.0 MWwithdrawnMeigs, Ohio
MISO Queue Project G482 — Coal in Ashtabula, OhioG482Coal1,200.0 MWwithdrawnAshtabula, Ohio
Marysville-Flatlick 765kVAB2-080Gas1,200.0 MWwithdrawnPickaway, Ohio
Highland-Lordstown 1 & 2 345 kVAE1-213Gas1,170.0 MWwithdrawnTrumbull, Ohio
Highland-Lordstown 345 kVAE2-013Gas1,170.0 MWwithdrawnTrumbull, Ohio
Highland-Sammis 345kVAA1-123Gas1,152.0 MWoperationalColumbiana, Ohio
Kammer-Vassell 765kVAB2-067Gas1,100.0 MWoperationalGuernsey, Ohio
Sammis–Star 345kVY2-085Gas1,050.0 MWwithdrawnCarroll, Ohio
Nottingham 138kVAC1-103Gas1,050.0 MWwithdrawnHarrison, Ohio
Sporn - Waterford 345kVP54Other1,035.0 MWwithdrawnMeigs, Ohio
Bayshore-GM Powertrain 138 kV & Lallendorf 345kVAB1-107Gas955.0 MWwithdrawnLucas, Ohio
Highland-Hanna 345kVAB1-105Gas940.0 MWoperationalTrumbull, Ohio
Highland-Hanna 345kVAD2-057Gas940.0 MWwithdrawnTrumbull, Ohio
Davis Besse6149_1Other925.2 MWoperationalOttawa, Ohio
Highland-Sammis 345kV & Highland-Mansfield 345kVZ2-028Gas800.0 MWoperationalTrumbull, Ohio
Zimmer 345 kVAJ1-008Solar800.0 MWwithdrawnClermont, Ohio
MISO Queue Project G083 — Other in Hamilton, OhioG083Other800.0 MWwithdrawnHamilton, Ohio
Bay Shore-Fostoria Central 345kV & Bayshore-Monroe 345kVY1-069Gas799.0 MWoperationalLucas, Ohio

Top developers in Ohio

Developer (canonical)ProjectsCapacity
Riverlake Energy, LLC7631 MW
Invenergy6337 MW
Cardinal Energy Storage East, LLC41,900 MW
TerraForm Twin Creeks Solar, LLC3128 MW
Swamp Fox Solar, LLC250 MW
Wombat Solar LLC2514 MW
JR ME LLC234 MW
Hamden Energy LLC2160 MW
Troy Energy LLC2658 MW
Nextera2410 MW
Orchid Acres Solar Project, LLC2400 MW
Reserve Energy Exploration Company2100 MW
Mink Solar LLC2324 MW
Williams County Solar, LLC2296 MW
Dragonfly Fields Solar Project, LLC298 MW

Recent material changes

ObservedProjectFieldOldNew
2026-10-10Nottingham 138 kVproposed_online_date2023-12-152026-12-15
2026-10-08Beaver-Davis Besse 345 kV Icapacity_mw297.66261.7
2026-10-02MCCo BESS Generating Facilityproposed_online_date2026-08-012026-10-01
2026-10-02MCCo BESS Generating Facilityproposed_online_date2026-08-012026-10-01
2026-10-02MCCo BESS Generating Facilityproposed_online_date2026-08-012026-10-01
2026-10-02MCCo BESS Generating Facilityproposed_online_date2026-08-012026-10-01
2026-10-02Border Basin Solarproposed_online_date2026-08-012026-10-01
2026-10-02Juliet Energy Project, LLCproposed_online_date2026-08-012026-10-01
2026-10-01Hannibal 138 kVproposed_online_date—2026-01-31
2026-10-01Hanging Rock 765 kVproposed_online_date—2027-06-01
2026-10-01Sammis - South Canton 345 kVproposed_online_date—2032-05-01
2026-10-01Cannelville 12.47 kVproposed_online_date—2026-10-01

Explore related data

Source last checked2026-07-31
Data last materially changed2026-10-11
Page data generated2026-10-11

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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