All Directives - Southern Cross Transmission
Directive Title Description Status
1Determination of appropriate market participant category and market segmentAs ordered by the Public Utility Commission of Texas (PUCT) in Project No. 46304: ERCOT shall (a) determine the appropriate market participation category for Southern Cross Transmission LLC and for any other entity associated with the Southern Cross DC tie for which a new market-participant category may be appropriate (creating new ones if necessary), (b) implement the modifications to the standard-form market-participant agreement and its protocols, bylaws, operating guides, and systems required for Southern Cross Transmission's and any other entity's participation, and (c) determine the appropriate market segment for Southern Cross Transmission and any other entity.In Progress
2Execution of any necessary coordination agreementsAs ordered by the Public Utility Commission of Texas (PUCT) in Project No. 46304: ERCOT shall execute a coordination agreement or agreements with any necessary independent system operator, regional transmission organization, or reliability coordinator on the eastern end of the Southern Cross line. ERCOT shall consult Southern Cross Transmission as needed during negotiations of such agreement(s) for technical input and guidance.Not Started
3Determination regarding ramp rate restrictionsAs ordered by the Public Utility Commission of Texas (PUCT) in Project No. 46304: ERCOT shall determine what ramp rate restrictions, if any, will be necessary to accommodate the interconnection of the Southern Cross DC tie and shall implement those restrictions and shall certify to the Commission when it has completed these actions.In Progress
4Development of methodology for outage coordinationAs ordered by the Public Utility Commission of Texas (PUCT) in Project No. 46304: ERCOT shall develop and implement a methodology to reliably and cost-effectively coordinate outages following the interconnection of the Southern Cross DC tie and shall certify to the Commission when it has completed these actions.In Progress
5Determination of planning model assumptions and considerationsAs ordered by the Public Utility Commission of Texas (PUCT) in Project No. 46304: ERCOT shall study and determine how best to model the Southern Cross DC tie in its transmission planning cases, make any necessary revisions to its standards, guides, systems, and protocols as appropriate, and certify to the Commission when it has completed these actions.Complete
6Determination regarding any needed transmission upgradesAs ordered by the Public Utility Commission of Texas (PUCT) in Project No. 46304: ERCOT shall study and determine what transmission upgrades, if any, are necessary to manage congestion resulting from power flows over the Southern Cross DC tie, make any necessary revisions to its standards, guides, systems, and protocols as appropriate, and certify to the Commission when it has completed these actions.In Progress
7Determination as to how to manage congestion caused by DC tieAs ordered by the Public Utility Commission of Texas (PUCT) in Project No. 46304: ERCOT shall (a) study and determine whether some or all DC ties should be economically dispatched or whether implementing a congestion-management plan or special protection scheme would more reliably and cost-effectively manage congestion caused by DC tie flows, (b) implement any necessary revisions to its protocols, guides, standards, and systems as appropriate, and (c) certify to the Commission when it has completed these actions.In Progress
8Determination regarding Primary Frequency Response and Voltage SupportAs ordered by the Public Utility Commission of Texas (PUCT) in Project No. 46304: ERCOT shall (a) study and determine whether Southern Cross Transmission or any other entity scheduling flows across the Southern Cross DC tie should be required to provide or procure voltage support service or primary frequency response, or their technical equivalents, (b) implement any necessary revisions to its standards, guides, systems, and protocols, as appropriate, and (c) certify to the Commission when it has completed these actions.In Progress
9Determination regarding modifications to Ancillary ServicesAs ordered by the Public Utility Commission of Texas (PUCT) in Project No. 46304: ERCOT shall (a) evaluate what modifications to existing and additional ancillary services, if any, are necessary for the reliable interconnection of the Southern Cross DC tie, (b) implement any needed modifications to ancillary-services procurement, (c) recommend how the costs of such required ancillary services are to be allocated, and (d) certify to the Commission when it has completed these actions.In Progress
10Determination regarding price formation under emergency conditionsAs ordered by the Public Utility Commission of Texas (PUCT) in Project No. 46304: ERCOT shall study price formation issues to determine whether, to avoid the flows over the DC ties adversely affecting price formation in the ERCOT wholesale market or otherwise causing outcomes inconsistent with a properly functioning energy market, any changes to pricing within the ERCOT market during emergencies are necessary. ERCOT shall certify to the Commission when it has completed these actions.Complete
11Determination regarding allocation of costs identified in PUC Docket No. 45624As ordered by the Public Utility Commission of Texas (PUCT) in Project No. 46304: ERCOT shall study and recommend appropriate responsibility for, and allocation of, the costs identified in the Commission's final order in Docket No. 45624, including costs common to the ERCOT system and special costs that are specific to the Garland line and Southern Cross DC tie, and shall identify any existing protocols that need to be modified or new protocols that need to be created, or (if appropriate) any existing Commission rules that need to be modified or new rules that need to be enacted, to appropriately address those costs.Not Started
12Determination regarding possible allocation of export-related costs to QSEsAs ordered by the Public Utility Commission of Texas (PUCT) in Project No. 46304: ERCOT shall study and determine for export-related costs whether the qualified scheduling entity should be assigned costs that ordinarily would ultimately be paid by the end-use customer.Not Started
13ERCOT reporting of status of work on Directives to PUCTAs ordered by the Public Utility Commission of Texas (PUCT) in Project No. 46304: ERCOT shall periodically update the Commission regarding its progress in completing the above tasks.In Progress
14ERCOT updates to PUCT regarding completion dates for Directives 1 to 12As ordered by the Public Utility Commission of Texas (PUCT) in Project No. 46304: ERCOT shall, as soon as practicable, notify the Commission of reasonable completion dates for the above tasks and shall report any changes to those completion dates as changes become known.In Progress