interXdata

South Dakota Interconnection Projects

interXdata tracks 479 interconnection projects in South Dakota representing 82,984 MW of requested capacity. The dominant technology by capacity is Wind. The most active counties are Grant, Deuel, Brookings.

479Total projects
42Active
182Operational
255Withdrawn
82,984 MWRequested capacity
4,775 MWActive capacity

Technology mix

TechnologyProjectsRequested capacity
Wind26056,425 MW
Coal217,490 MW
Solar486,730 MW
Gas676,576 MW
Other623,553 MW
Battery132,176 MW
Diesel732 MW
Oil12 MW

Counties

CountyProjectsRequested capacity
Grant406,542 MW
Deuel316,245 MW
Brookings284,655 MW
Codington274,431 MW
Pennington261,833 MW
Brown221,985 MW
Beadle181,563 MW
Campbell164,057 MW
Buffalo142,858 MW
Hyde133,079 MW
Jerauld131,210 MW
Clark131,418 MW
Hand139,201 MW
Minnehaha111,702 MW
Hughes111,112 MW
Bon Homme101,615 MW
Charles Mix10423 MW
Meade91,155 MW
Stanley91,243 MW
McPherson96,220 MW
Yankton8562 MW
Roberts83,450 MW
Day81,168 MW
Clay61,425 MW
Butte5495 MW
Turner4525 MW
Todd4291 MW
Lincoln4527 MW
Tripp3450 MW
Aurora351 MW
Mcpherson3794 MW
Lawrence3104 MW
Moody3361 MW
Spink3123 MW
Walworth3586 MW
Haakon County3800 MW
Davison224 MW
Dewey2563 MW
McCook County2100 MW
Day County2300 MW

Largest projects

ProjectQueue IDTechnologyCapacityStatusLocation
CollinsT32Wind2,500.0 MWwithdrawnMcPherson, South Dakota
MISO Queue Project G705 — Wind in Hand, South DakotaG705Wind2,000.0 MWwithdrawnHand, South Dakota
West Queue Project GI-0612 — Wind in Hand, South DakotaGI-0612Wind2,000.0 MWwithdrawnHand, South Dakota
MISO Queue Project G884 — Wind in Roberts, South DakotaG884Wind1,500.0 MWwithdrawnRoberts, South Dakota
West Queue Project GI-0611 — Wind in Hand, South DakotaGI-0611Wind1,500.0 MWwithdrawnHand, South Dakota
West Queue Project GI-0609 — Wind in Buffalo, South DakotaGI-0609Wind1,500.0 MWwithdrawnBuffalo, South Dakota
Collins IIIT34Wind1,500.0 MWwithdrawnMcPherson, South Dakota
MISO Queue Project G703 — Wind in Hand, South DakotaG703Wind1,500.0 MWwithdrawnHand, South Dakota
MISO Queue Project G704 — Wind in Hand, South DakotaG704Wind1,500.0 MWwithdrawnHand, South Dakota
Astoria 345kV substationJ3941Gas1,144.0 MWoperationalDeuel, South Dakota
Collins IIT33Wind1,000.0 MWwithdrawnMcPherson, South Dakota
MISO Queue Project G731 — Wind in Jerauld, South DakotaG731Wind750.0 MWwithdrawnJerauld, South Dakota
West Queue Project GI-0111a — Coal in Mcpherson, South DakotaGI-0111aCoal750.0 MWwithdrawnMcpherson, South Dakota
West Queue Project GI-0702 — Coal in Campbell, South DakotaGI-0702Coal700.0 MWwithdrawnCampbell, South Dakota
West Queue Project GI-0610 — Coal in Stanley, South DakotaGI-0610Coal700.0 MWwithdrawnStanley, South Dakota
West Queue Project GI-0517 — Coal in Campbell, South DakotaGI-0517Coal700.0 MWwithdrawnCampbell, South Dakota
MISO Queue Project G118 — Other in Grant, South DakotaG118Other650.0 MWwithdrawnGrant, South Dakota
West Queue Project GI-0408 — Coal in Clay, South DakotaGI-0408Coal600.0 MWwithdrawnClay, South Dakota
MISO Queue Project G392 — Coal in Grant, South DakotaG392Coal600.0 MWwithdrawnGrant, South Dakota
MISO Queue Project H095 — Wind in Roberts, South DakotaH095Wind550.0 MWwithdrawnRoberts, South Dakota
Chappelle Creek 345 kV SubstationGEN-2023-106Wind504.0 MWwithdrawnHyde, South Dakota
West Queue Project GI-1106 — Coal in Pennington, South DakotaGI-1106Coal500.0 MWwithdrawnPennington, South Dakota
West Queue Project GI-0318 — Coal in Beadle, South DakotaGI-0318Coal500.0 MWwithdrawnBeadle, South Dakota
West Queue Project GI-0319 — Coal in Clay, South DakotaGI-0319Coal500.0 MWwithdrawnClay, South Dakota
Split Rock - White (WAPA) 345.0kVJ3964Solar490.0 MWoperationalBrookings, South Dakota
BROOKINGS COUNTYJ3963Solar490.0 MWoperationalBrookings, South Dakota
West Queue Project BHBE G11 — Coal in Campbell, South DakotaBHBE G11Coal475.0 MWactiveCampbell, South Dakota
Chappelle Creek - Leland Olds 345kVGEN-2017-114Wind450.0 MWwithdrawnDewey, South Dakota
Big Stone South 345 kV substationJ4135Wind450.0 MWwithdrawnGrant, South Dakota
Big Stone6098_1Other450.0 MWoperationalGrant, South Dakota

Top developers in South Dakota

Developer (canonical)ProjectsCapacity
Basin Electric5955 MW
BEPC4516 MW
Citizens Enterprises Corporation3303 MW
PrairieWinds SD1 Inc.3184 MW
Day County Wind, LLC2199 MW
NorthWestern Energy262 MW
Black Hills Cheyenne Light Fuel and Power Transmission2240 MW
Black Hills Electric Generation LLC1100 MW
Third Planet Wind Power1200 MW
Summit Wind Farm190 MW
Oak Lane11 MW
Pioneer Green Energy, LLC199 MW
White Wind Farm LLC1200 MW
Wess Wind I LLC153 MW
Northern Wind150 MW

Recent material changes

ObservedProjectFieldOldNew
2026-10-09Wessington Springscapacity_mw10.8162
2026-10-02Brookings Solarproposed_online_date2026-08-012026-10-01
2026-09-24Ellendale 345 - Twin Brooks 345.0kVphaseStudy Not StartedPhase 2
2026-09-24Ellendale - Twin Brooks 345.0kVphaseStudy Not StartedPhase 2
2026-09-24Yankee - Brookings CO. 115.0kVphaseStudy Not StartedPhase 2
2026-09-24BROOKINGS COUNTYphaseStudy Not StartedPhase 2
2026-09-24Ellendale 345 - Twin Brooks 345.0kVphaseStudy Not StartedPhase 2
2026-09-24Ellendale 345 - Twin Brooks 345.0kVphaseStudy Not StartedPhase 2
2026-09-24Twin Brooks 345 kV SubstationphaseStudy Not StartedPhase 2
2026-09-24Astoria 345kV substationphaseStudy Not StartedPhase 2
2026-09-11Siebrecht 115 kV Substationproposed_online_date—2030-08-15
2026-09-11Siebrecht 115 kV Substationoperational_date2029-06-14—

Explore related data

Source last checked2026-07-31
Data last materially changed2026-10-12
Page data generated2026-10-12

Provenance: 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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