DC Tie Viewer


ERCOT EAST


OUTAGE UPDATE
Updated at 4/21/2026 3:38:54 AM – The ERCOT EAST DC Tie has been returned to normal operation.

History

ERCOT NORTH
OUTAGE UPDATE
Updated at 6/4/2026 10:39:15 AM – The ERCOT NORTH DC Tie has been returned to normal operation.

History

WSCC EDDY Co.
El Paso Electric has posted a Business Practice on the EPE OASIS regarding operation of the Eddy County HVDC tie. Customers requesting transmission service under the SPP OATT for service up to or out of the Eddy HVDC tie are responsible for reading and understanding this EPE Business Practice. The customer should also understand that any transmission service charges for reservations under the SPP OATT up to or out of the EDDY HVDC tie will not be forgiven when the Eddy HVDC tie becomes inoperable due to this EPE Business Practice. Questions related to the EPE Business Practices or status of the Eddy HVDC Tie due to this Business Practice should be directed to the EPE OASIS or EPE Staff.

OUTAGE UPDATE
Updated at 6/2/2026 10:21:46 AM – The WSCC EDDY Co. DC Tie has been returned to normal operation.

History

WSCC BLACKWATER
OUTAGE UPDATE
Updated at 6/9/2026 4:32:08 AM – The WSCC BLACKWATER DC Tie has been returned to normal operation.

History

LAMAR
OUTAGE UPDATE
Updated at 5/25/2026 1:09:34 PM – The LAMAR DC Tie has been returned to normal operation.

History

MILES CITY
OUTAGE UPDATE
Updated at 6/4/2026 12:42:14 AM (CD) - The MILES CITY DC Tie from east to west will be limited to 100 as a result of a planned maintenance outage from 6/4/2026 12:30:00 AM (CD) to 8/1/2026 6:00:00 PM (CD).

History

STEGALL
Transmission service across the Stegall HVDC Tie is administered by WAPA. SPP administers service to and from the Eastern terminal of this tie. Information provided here represents status of the HVDC Tie and outage information as communicated to SPP.
OUTAGE UPDATE
Updated at 5/14/2026 8:20:41 PM – The STEGALL DC Tie has been returned to normal operation.

History

SIDNEY
Transmission service across the Sidney HVDC Tie is administered by WAPA. SPP administers service to and from the Eastern terminal of this tie. Information provided here represents status of the HVDC Tie and outage information as communicated to SPP.


OUTAGE UPDATE
Updated at 1/23/2026 4:49:57 AM (CS) - The SIDNEY DC Tie in both directions will be limited to 0 as a result of a planned maintenance outage from 9/8/2025 9:00:00 AM (CS) to 5/1/2027 5:00:00 AM (CS).

History

RAPID CITY NON-DC TIE INJECTION POINT
Transmission service across the Rapid City HVDC Tie is administered by Black Hills Power. SPP administers service to and from the Eastern terminal of this tie (RCEASTINJ). Information provided here represents status of the Eastern terminal of the Rapid City DC Tie as communicated to SPP.
OUTAGE UPDATE
Updated at 6/11/2026 3:41:20 AM – The RAPID CITY NON-DC TIE INJECTION POINT DC Tie has been returned to normal operation.

History

SASK POWER (SPC) NON-DC TIE INJECTION POINT
Transmission service across the SPP/SPC interface (at Boundary Dam substation on the Boundary Dam-Tioga 230kV line) is administered by SaskPower north of Boundary Dam, and by SPP south of Boundary Dam. Information provided here represents status of the SPP/SPC interface south of Boundary Dam substation (i.e. SPP Flowgates “SPC_EXP” (South-to-North) and “SPC_IMP” (North- to-South)), and outage or limitation information on the SPP Transmission System as communicated to SPP.
OUTAGE UPDATE
Updated at 6/1/2026 10:06:26 AM (CD) - The SASK POWER (SPC) NON-DC TIE INJECTION POINT DC Tie from south to north will be limited to 0 as a result of a planned maintenance outage from 6/1/2026 8:00:00 AM (CD) to 11/15/2026 4:00:00 PM (CD).

History