Otter Tail Power Company — Interconnection Queue Projects

Otter Tail Power Company is associated with 112 tracked interconnection projects representing 20,606 MW of requested capacity.

Entity resolution: this utility / transmission entity rolls up 5 source organization name(s) that were auto-matched into a single canonical cluster. Attribution is inferred from source records and may include related special-purpose entities.

112Projects

3Active

48Operational

61Withdrawn

20,606 MWRequested capacity

1Markets

Capacity by technology

Technology	Projects	Requested capacity
Wind	46	9,248 MW
Solar	32	5,192 MW
Battery	15	2,746 MW
Other	15	1,736 MW
Gas	4	1,685 MW

Portfolio by market

Market	Projects
MISO	19

Geographic footprint

State	Projects
South Dakota	39
Minnesota	38
North Dakota	32
Arkansas	1

Projects

Project	Queue ID	Technology	Capacity	Status	Location
Astoria 345kV substation	J3941	Gas	1,144.0 MW	operational	Deuel, South Dakota
Buffalo 345 kV	J2086	Solar	500.0 MW	withdrawn	Barnes, North Dakota
Coyote	8222_1	Other	450.0 MW	operational	Mercer, North Dakota
Big Stone	6098_1	Other	450.0 MW	operational	Grant, South Dakota
Big Stone South 345kV Substation	J2624	Battery	450.0 MW	withdrawn	Stevens, Minnesota
Big Stone South 345 kV substation	J4135	Wind	450.0 MW	withdrawn	Grant, South Dakota
Big Stone South to Ellendale 345kV	J1621	Wind	400.0 MW	withdrawn	McPherson, South Dakota
Other_	J3952	Solar	395.0 MW	withdrawn	Polk, Minnesota
Astoria Station	61144_1	Gas	349.0 MW	operational	Deuel, South Dakota
Wahpeton 230kV	J2492	Battery	300.0 MW	withdrawn	Wilkin, Minnesota
Big Stone South - Alexandria 345kV	J3886	Wind	300.0 MW	withdrawn	Swift, Minnesota
Winger 115kV Substation	J1081	Wind	300.0 MW	withdrawn	Polk County, Minnesota
Big Stone South - Alexandira 345kV	J3672	Wind	300.0 MW	operational	Big Stone, Minnesota
Harvey - Underwood 230 kV Line Tap	J1456	Wind	300.0 MW	withdrawn	Sheridan County, North Dakota
Big Stone South - Deuel County 345.0kV	J3960	Wind	300.0 MW	operational	Lac Qui Parle, Minnesota
Buffalo 345kV	J707	Wind	300.0 MW	withdrawn	Barnes County, North Dakota
Big Stone South - Alexandria 345kV	J3384	Wind	300.0 MW	operational	Big Stone, Minnesota
Ellendale - Twin Brooks 345.0kV	J3468	Wind	300.0 MW	operational	Day, South Dakota
Abercrombie Solar	68339_1	Solar	295.1 MW	active	Richland, North Dakota
Astoria 345 kV Substation (J493/J510)	J1485	Wind	250.0 MW	operational	Deuel County, South Dakota
Big Stone South 345 kV substation	J4081	Battery	250.0 MW	operational	Grant, South Dakota
Buffalo 345 kV Substation	J4105	Solar	250.0 MW	withdrawn	Cass, North Dakota
Twin Brooks 345 kV Substation	J3824	Battery	250.0 MW	withdrawn	Roberts, South Dakota
Big Stone South 345 kV substation	J4153	Battery	250.0 MW	operational	Grant, South Dakota
Astoria - Deuel County 345.0kV	J3862	Solar	250.0 MW	withdrawn	Deuel, South Dakota
Big Stone South 345 kV substation	J4240	—	250.0 MW	operational	Grant, —
Buffalo 345 kV Substation	J4106	Solar	250.0 MW	withdrawn	Cass, North Dakota
Big Stone South - Alexandira 345kV	J3443	Wind	250.0 MW	operational	Big Stone, Minnesota
Big Stone South 345kV	J4136	Battery	250.0 MW	withdrawn	Grant, South Dakota
Ellendale 345 - Twin Brooks 345.0kV	J1989	Wind	250.0 MW	withdrawn	Brown, South Dakota
Jamestown 345 kV Substation	J3787	Solar	247.0 MW	operational	Stutsman, North Dakota
Hankinson 230 kV Substation	J3956	Wind	240.0 MW	withdrawn	Wilkin, Minnesota
Other_	J3951	Solar	218.0 MW	withdrawn	Polk, Minnesota
Big Stone-Brookings County 345KV Line	J941	Wind	200.0 MW	withdrawn	Grant County, South Dakota
Ellendale - Big Stone South 345kV Line	J933	Wind	200.0 MW	withdrawn	Day County, South Dakota
Buffalo 115 kV	J3833	Wind	200.0 MW	operational	Cass, North Dakota
Ellendale 345 - Twin Brooks 345.0kV	J3420	Wind	200.0 MW	operational	McPherson, South Dakota
Jamestown 345 kV	J2344	Wind	200.0 MW	withdrawn	Stutsman, North Dakota
Jamestown 345 kV	J2518	Battery	200.0 MW	withdrawn	LaMoure, North Dakota
Buffalo 345kV Substation	J1428	Solar	200.0 MW	withdrawn	Cass County, North Dakota
Big Stone South substation, Big Stone City	J721	Wind	200.0 MW	withdrawn	Codington County,Deuel County, South Dakota
Big Stone South 230kV Substation	J722	Wind	200.0 MW	operational	Codington County,Deuel County, South Dakota
Ellendale - Twin Brooks 345kV	J2333	Wind	200.0 MW	withdrawn	McPherson, South Dakota
Ellendale 345 - Twin Brooks 345.0kV	J3428	Wind	200.0 MW	operational	McPherson, South Dakota
Ellendale - Twin Brooks 345kV	J2338	Wind	200.0 MW	withdrawn	McPherson, South Dakota
On proposed Big Stone-Ellendale 345 kV line approx. 76 miles west of Big Stone	J458	Wind	200.0 MW	withdrawn	Clark County, South Dakota
Other_	J3667	Wind	200.0 MW	withdrawn	Dickey, North Dakota
Big Stone to Ellendale 345 kV	J1594	Wind	200.0 MW	withdrawn	Clark, South Dakota
Browns Valley 230 kV Substation	J2852	Battery	200.0 MW	operational	Roberts, South Dakota
Brooking County - Big Stone South (J510 Tap - J630 Tap) 345kV Line	J747	Wind	200.0 MW	withdrawn	Deuel County, South Dakota
Big Stone South - Deuel County 345.0kV	J3955	Wind	200.0 MW	operational	Lac Qui Parle, Minnesota
Harvey - Underwood 230kV Line	J780	Wind	200.0 MW	withdrawn	Sheridan County, North Dakota
Big Stone to Ellendale (BS3ELR) 345kV (J933)	J1521	Wind	199.5 MW	withdrawn	Day, South Dakota
Buffalo 115kV	J1961	Wind	190.0 MW	withdrawn	Cass, North Dakota
Alexandria to Hudson 115 kV	J3025	Solar	188.0 MW	withdrawn	Douglas, Minnesota
Astoria 345kV	J2546	Wind	185.0 MW	withdrawn	Deuel, South Dakota
Forman 230 kV Substation	J3266	Battery	175.0 MW	withdrawn	Sargent, North Dakota
Hankinson - Wahpeton 230.0kV	J4170	Solar	172.0 MW	operational	Richland, North Dakota
Wahpeton - Fergus Falls 230.0kV	J3742	Solar	160.0 MW	operational	Otter Tail, Minnesota
Astoria 345kV Substation	J1371	Wind	150.0 MW	withdrawn	Yellow Medicine County, Minnesota
Astoria 345kV	J2003	Solar	150.0 MW	withdrawn	Deuel, South Dakota
Other_	J3370	Wind	150.0 MW	withdrawn	Kittson, Minnesota
Winger 115kV	J2749	Solar	150.0 MW	operational	Polk, Minnesota
Buffalo 115kV Substation	J975	Wind	150.0 MW	withdrawn	Cass County, North Dakota
Wilton - Winger 230.0kV	J2748	Solar	150.0 MW	withdrawn	Clearwater, Minnesota
Big Stone South 345 kV substation	J4149	Wind	150.0 MW	withdrawn	Grant, South Dakota
Big Stone South 345 kV Substation	J3017	Solar	150.0 MW	withdrawn	Grant, South Dakota
Winger	J2291	Solar	150.0 MW	withdrawn	Polk, Minnesota
Merricourt Wind Energy Center	57048_1	Wind	150.0 MW	operational	McIntosh, North Dakota
MISO Queue Project S1160 — Generation in an unlisted county, South Dakota	S1160	—	150.0 MW	operational	South Dakota
Astoria 345kV substation	J3400	Gas	142.2 MW	operational	Deuel, South Dakota
Canby 115 kV Substation	J3233	Solar	140.0 MW	operational	Yellow Medicine, Minnesota
Big Stone South - Alexandria 345.0kV	J3669	Solar	135.0 MW	operational	Stevens, Minnesota
Plummer Pipe	J2885	Solar	130.0 MW	operational	Red Lake, Minnesota
Big Stone South 230KV Substation	J3183	Solar	125.0 MW	withdrawn	Grant, South Dakota
Big Stone South 230kV	S1046	—	120.0 MW	operational	Codington, South Dakota
Big Stone South 230kV	S1047	—	120.0 MW	operational	Codington, South Dakota
Forman 230 kV Substation	J2094	Battery	100.0 MW	withdrawn	Sargent, North Dakota
Big Stone South 345kV Sub	J1328	Solar	100.0 MW	withdrawn	Grant County, South Dakota
Harvey-Underwood 230kV	J1622	Solar	100.0 MW	withdrawn	Sheridan, North Dakota

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: U.S. EIA — Form EIA-860M generator inventory (operating + planned); Lawrence Berkeley National Laboratory — Queued Up interconnection dataset; MISO — 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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