AI-generated summary
· Application · 05/22/2026
NSEB Board Staff issued a second set of information requests (IR-17 and IR-18) to Nova Scotia Power regarding the Big Island Subsea Cable Replacement application, seeking detailed cost comparisons and technical justification for the chosen subsea cable option over land-based alternatives.
AI summary
- IR-17 directs Nova Scotia Power Incorporated to provide a comprehensive cost estimate and Economic Analysis Model (EAM) for a trenched underground land cable option, including preliminary route mapping, cable length, burial depth, trenching technologies, and a technical comparison against the subsea cable option (IR-17(a)–(d), Document 330532, p.2).
- IR-18 challenges NS Power's option evaluation criteria, specifically questioning why the Subsea Cable option received a 'High' reliability rating while the Underground Cable Causeway option received only 'Moderate,' given that fault-location and repair difficulties cited for the underground option may also apply to the subsea option (IR-18(a)(i)–(ii), p.2–3).
- Board Staff also requests detailed routine maintenance requirements for both options, NS Power's standard practices for subsea and underground cable repair, and whether the proposed new subsea cable offers improved repairability compared to the 1977 and 1990s cables that were replaced following major damage events (IR-18(b)(i)–(v), p.3).
- Responses to both IRs are due Friday, June 12, 2026, and must be submitted as a searchable PDF to Board Staff contact Chris Jiang, P.Eng. (Document 330532, p.1).
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What was filed
Documents filed on this day
- 102100 NSEB (NSPI) IR 17 to 18