Sixmile Canyon 500kV Substation (L0521)
Sixmile Canyon 500kV Substation is a 1,050.0 MW other interconnection project in Umatilla, Oregon with a current status of withdrawn. It is proposed to connect at BPA's proposed Longhorn Substation.
1,050.0 MWCapacity
WithdrawnStatus
ORMarket
OtherTechnology
Project facts
| Canonical name | Sixmile Canyon 500kV Substation |
|---|---|
| Queue ID | L0521 |
| Status | withdrawn |
| Source status | WITHDRAWN |
| Market | OR |
| Technology | Other |
| Capacity | 1,050.0 MW |
| State | Oregon |
| County | Umatilla |
| Point of interconnection | BPA's proposed Longhorn Substation |
| Requested (queue) date | 2022-03-18 |
| Proposed in-service date | 2026-01-02 |
| Operational date | — |
| Withdrawn date | — |
| Developer | PacifiCorp |
| Utility / transmission owner | Bonneville Power Administration |
What changed
| Observed | Field | Old value | New value | Materiality |
|---|---|---|---|---|
| 2026-08-04 | new_project | — | withdrawn | high |
Explore related data
Source last checked2026-08-04
Data last materially changed2026-08-04
Page data generated2026-08-27
Provenance: bpa-oasis. Values are normalized from public source records into the interXdata canonical warehouse; see each source for original filings.
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