AI-generated summary
· Decision · 06/19/2026
NSEB approved Nova Scotia Power's $4,388,679 Big Island Subsea Cable Replacement project, a $849,612 increase over the 2026 ACE Plan budget.
AI summary
- The Nova Scotia Energy Board approved the total project cost of $4,388,679 on June 19, 2026, for the 2025 Ace Plan-linked 539N-201 Big Island Subsea Cable Replacement (CI C0080101), representing a $849,612 (24%) cost increase over the original budget of $3,539,067.
- The cost increase is attributable to additional engineering requirements, including a marine geotechnical survey to assess burial conditions and cable protection, and landfall civil work for cable pull-in and backfill activities (Decision Letter, p. 1).
- The 1977-vintage cable—currently serving as primary supply to Big Island's 80 customers after the 1999 replacement cable was damaged during Hurricane Fiona in September 2022—has exceeded its 40-year service life, creating elevated risk of extended outage for a single-supply community (Decision Letter, pp. 1–2).
- Board staff conducted two rounds of Information Requests (April 20 and May 22, 2026); NS Power's responses supported a three-option comparison (subsea cable, overhead causeway, underground causeway), with the buried subsea option selected for lower lifecycle risk and higher reliability despite a $665,605 lower upfront cost advantage over the underground causeway (Decision Letter, p. 2).
- The Board found the subsea and underground options broadly comparable on reliability and environmental risk, but approved the subsea option on the basis of lower upfront Capital Expenditures and lower lifecycle risk, while noting the underground option's significantly lower future replacement cost (Decision Letter, p. 2).
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What was filed
Documents filed on this day
- 102449 Decision Letter
- 102449 Decision Letter