SAVRN Tracker

South Dakota Data Center Permits Tracker

Name: South Dakota Data Center Permits and Power Development Record
Creator: SAVRN
License: https://creativecommons.org/licenses/by/4.0/

South Dakota has 3,801 MW of generation and storage requested in the interconnection queue and 235 MW of generation planned within 36 months. Every row below links to its primary source.

Last checked Sep 18, 2026

Data center & substation permits

of 0 total utility-scale permits tracked here

3,801MW

In the interconnection queue

12 active generation and storage positions

235MW

Planned generation

10 EIA-860M generators due within 36 months

#13

of 51 states with anything on record

Ranked by data center & substation permit count

Where the activity is

Ranked by row count. Counts are never mixed with the MW figures above.

Top counties · queue, substation & state air rows

Brookings 2

Grant 2

Aberdeen 1

Brown 1

Day 1

Deuel 1

Haakon County 1

Plankinton 1

Interconnection queue in South Dakota

3,801 MW requested across 12 active generation and storage positions. Withdrawn and in-service rows are left out, matching the national page.

ISO	Project	Fuel	MW	Status
MISO	Astoria 345kV substationOTTER TAIL POWER COMPANY OTPDeuel County	Natural gas	1,144 MW	Active
MISO	BROOKINGS COUNTYNORTHERN STATES POWER COMPANYBrookings County	Solar	490 MW	Active
MISO	Split Rock - White (WAPA) 345.0kVNORTHERN STATES POWER COMPANYBrookings County	Solar	490 MW	Active
SPP	GEN-2017-014Haakon County County	Onshore wind	300 MW	Ia fully executed/on schedule
MISO	Ellendale - Twin Brooks 345.0kVOTTER TAIL POWER COMPANY OTPDay County	Onshore wind	300 MW	Active
SPP	GEN-2024-035Brown County	Solar plus storage	270 MW	Disis stage
MISO	Big Stone South 345 kV substationOTTER TAIL POWER COMPANYGrant County	Battery storage	250 MW	Active
MISO	Big Stone South 345 kV substationOTTER TAIL POWER COMPANYGrant County	Battery storage	250 MW	Active
MISO	MISO S1160OTTER TAIL POWER COMPANY OTP	Fuel not stated	150 MW	Active
SPP	ERAS-2025-035Aberdeen County	Natural gas	138 MW	Ia fully executed/on schedule
SPP	GEN-2025-GR4Plankinton County	Onshore wind	11 MW	Special study
SPP	ASGI-2024-004Redfield County	Fuel not stated	8 MW	None

Planned generation in South Dakota

235 MW across 10 EIA-860M generators scheduled to enter service within 36 months.

Plant	Technology	MW	Planned	Status
Grant Solar, LLCMcCook County	Solar Photovoltaic	99 MW	Oct 2027	Regulatory approvals pending. Not under construction
Lange Generating StationPennington County	Natural Gas Internal Combustion Engine	17 MW	Dec 2026	Under construction, more than 50 percent complete
Lange Generating StationPennington County	Natural Gas Internal Combustion Engine	17 MW	Dec 2026	Under construction, more than 50 percent complete
Lange Generating StationPennington County	Natural Gas Internal Combustion Engine	17 MW	Dec 2026	Under construction, more than 50 percent complete
Lange Generating StationPennington County	Natural Gas Internal Combustion Engine	17 MW	Dec 2026	Under construction, more than 50 percent complete
Lange Generating StationPennington County	Natural Gas Internal Combustion Engine	17 MW	Dec 2026	Under construction, more than 50 percent complete
Lange Generating StationPennington County	Natural Gas Internal Combustion Engine	17 MW	Dec 2026	Under construction, more than 50 percent complete
Aberdeen CTBrown County	Natural Gas Fired Combustion Turbine	16 MW	Oct 2026	Under construction, more than 50 percent complete
Aberdeen CTBrown County	Natural Gas Fired Combustion Turbine	16 MW	Oct 2026	Under construction, more than 50 percent complete
Brookings SolarBrookings County	Solar Photovoltaic	5 MW	Aug 2026	Under construction, less than or equal to 50 percent complete

Where South Dakota stands

Across the whole tracker, 533 data center and substation permits are on record in 51 states and DC. South Dakota accounts for 0 of them, ranking #13 by that count. Ranking measures documented permit activity, not the size of the eventual buildout.

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