Big Stone South 345 kV substation (J4240)
Big Stone South 345 kV substation is a 250.0 MW generation interconnection project with a current status of operational. It is proposed to connect at Big Stone South 345 kV substation.
250.0 MWCapacity
OperationalStatus
—Market
GenerationTechnology
Project facts
| Canonical name | Big Stone South 345 kV substation |
|---|---|
| Queue ID | J4240 |
| Status | operational |
| Source status | Active |
| Market | — |
| Technology | Generation |
| Capacity | 250.0 MW |
| State | — |
| County | Grant |
| Point of interconnection | Big Stone South 345 kV substation |
| Requested (queue) date | 2026-05-13 |
| Proposed in-service date | 2031-06-28 |
| Operational date | 2031-06-28 |
| Withdrawn date | — |
| Developer | — |
| Utility / transmission owner | Otter Tail Power Company |
What changed
| Observed | Field | Old value | New value | Materiality |
|---|---|---|---|---|
| 2026-07-29 | new_project | — | operational | high |
Explore related data
Source last checked2026-08-27
Data last materially changed2026-08-27
Page data generated2026-08-27
Provenance: 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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