Topic:"Ns Nb Reliability Intertie Project" in M12916

5.4.1 Reliability Intertie On April 10, 2025, Wasoqonatl Transmission Incorporated (WTI) filed the NS-NB Reliability Intertie Project Application to build the reliability intertie, a second 345 kV AC transmission line between the Nova Scot...

AI summary On April 10, 2025, Wasoqonatl Transmission Incorporated (WTI) submitted an application for the NS-NB Reliability Intertie Project, which was approved by the NSEB on November 20, 2025. This project involves constructing a second 345 kV AC transmission line between Nova Scotia and New Brunswick to support renewable energy integration and meet provincial renewable energy mandates.

NON-CONFIDENTIAL 1 Request IR – 3 2 Reference: Exh. N-1, Section 5.4.1 - a) Please provide a list of all high-voltage equipment (including but not limited to transformers and circuit breakers) required for the NS-NB Reliability Intertie an...

AI summary The document requests a list of all high-voltage equipment required for the NS-NB Reliability Intertie project and their procurement status, including transformers and circuit breakers. If such a list does not exist, it asks to identify any equipment that has already been procured.

- b) For any item identified in the response to part (b) that has does not have a firm delivery date consistent with the target in-service date of 2028, please describe IESO-NS's understanding of any risk mitigation plan for late delivery....

AI summary The response refers questions about the NS-NB Reliability Intertie project to the project owner, Wasoqonatl Transmission Incorporated, and outlines contingency plans for delays in the project's completion by 2028, including potential operation as an electrical island and maintaining system reliability.

NON-CONFIDENTIAL organization as required. As of the date of filing, IESO Nova Scotia has participated in preliminary discussions with other potential members of the Utilities-ISO Committee listed in the MOU. b) The 2026 10 Year System Out...

AI summary IESO Nova Scotia has engaged in preliminary discussions regarding the Utilities-ISO Committee as outlined in a Memorandum of Understanding (MOU). The 2026 10 Year System Outlook remains the most current assessment for system capacity and resource adequacy in Nova Scotia over the 2026-2036 horizon. No direct link between the MOU and the NS-NB Reliability Intertie has been identified, and no deliverables from the MOU have been completed as of the filing date.

NON-CONFIDENTIAL 1 – Request IR 9 - Refer to the 2026 Report Section 3.2.7 Firm Imports New Brunswick, page 14, where IESO

AI summary The text references a report section discussing firm imports from New Brunswick in the 2026 Report, specifically mentioning the Nova Scotia Independent Energy System Operator (IESO).

Request IR-3: Reference : Exh. N-1, Section 5.4.1 - a) Please provide a list of all high-voltage equipment (including but not limited to transformers and circuit breakers) required for the NS-NB Reliability Intertie and the procurement sta...

AI summary Request IR-3 seeks information about the procurement status of high-voltage equipment for the NS-NB Reliability Intertie, risk mitigation plans for potential delays, contingency plans if the project is not completed by 2028, and whether outages of the existing 345 kV line will be required.

IG notes that the near and medium-term resource adequacy conclusions rely on a number of resources that are not within IESO-NS's direct control and whose in-service timing carries risk. These include: The Reliability Intertie. The NS-NB Re...

AI summary The Industrial Group (IG) highlights concerns about the NS-NB Reliability Intertie project's timeline and risks, noting its critical importance to Nova Scotia's energy system. If the Intertie is not completed by Q4 2028, the system may need to operate as an electrical island at higher costs. IG argues that these issues should be integrated into long-term planning.

CONCLUSION IESO-NS has the opportunity to file rebuttal submissions and may be prepared to accept the IG's recommendations. If so, the IG welcomes those commitments. In the absence of those commitments, the IG respectfully requests that th...

AI summary The IG recommends that IESO-NS provide specific updates and reports in its filings regarding PRM reassessment, project statuses, RES compliance, interconnection requests, coordination with NSPI, and forecasting capabilities. The IG also welcomes IESO-NS's potential acceptance of its recommendations.