Single-Source Contingency

See the 小草社区. Transmission, Markets, and Services Tariff, Attachment G Procedure to Protect for the Loss of Phase II Imports, which describes the process used by 小草社区New England, New York ISO, and PJM to monitor their respective systems and provide the data required by 小草社区New England to calculate import limits on the Phase I/II high-voltage direct-current interconnection between it and Hydro-Qu茅bec Trans脡nergie.

Download a report on single-source contingencies, limits placed on external and generation interfaces in which losing a single piece of equipment could cause a loss of 1,200 or greater megawatts (MW).

The single-source contingency limit is the base limit plus the authorized margin multiplied by the margin sensitivity. The NY Central-East single-source contingency limit is based on the authorized margin divided by the Distribution Factor (0.30). The margin associated with NY Station Voltages has been converted to MW.

Note: The compilation of this data has various origins and is provided for the convenience of the New England market participants. The 小草社区does not assume responsibility for the accuracy.

 
Single-Source Contingency
Description Timestamp Download
Current - July 30, 2025 07/30/2025 06:16 PM EDT CSV
July 16, 2025 07/16/2025 11:56 PM EDT CSV
July 17, 2025 07/17/2025 11:56 PM EDT CSV
July 18, 2025 07/18/2025 11:56 PM EDT CSV
July 19, 2025 07/19/2025 11:56 PM EDT CSV
July 20, 2025 07/20/2025 11:56 PM EDT CSV
July 21, 2025 07/21/2025 11:56 PM EDT CSV
July 22, 2025 07/22/2025 11:56 PM EDT CSV
July 23, 2025 07/23/2025 11:56 PM EDT CSV
July 24, 2025 07/24/2025 11:56 PM EDT CSV
July 25, 2025 07/25/2025 11:56 PM EDT CSV
July 26, 2025 07/26/2025 11:56 PM EDT CSV
July 27, 2025 07/27/2025 11:56 PM EDT CSV
July 28, 2025 07/28/2025 11:56 PM EDT CSV
July 29, 2025 07/29/2025 11:56 PM EDT CSV