AI-generated summary
· Closing_evidence · 05/29/2026
Nova Scotia Power filed its 2025 Short Run Marginal Cost Test to Rates Report, finding all rate classes passed, and signalled interest in reviewing the report's ongoing regulatory value.
AI summary
- All 17 above-the-line and 2 below-the-line Nova Scotia Power rate classes passed the 2025 Rate Design SRMC test (Appendix B, Figures 1.1 and 1.2), reversing the 2022 failures attributed to geopolitical commodity price spikes.
- The 2025 average system marginal cost rose 11.4% to $90.48/MWh (from $81.22/MWh in 2024), driven by generation mix changes, higher load, and a shift toward Heavy Fuel Oil over natural gas due to relative commodity pricing (Section 3.2).
- In response to a Board directive from M12350, NS Power conducted a sensitivity analysis of Time Varying Pricing pilot price elasticities, finding the daily TOU elasticity (-1.607) is approximately ten times higher than the long-run -0.15 used in the Load Forecast, while the CPP daily elasticity (-0.017) is roughly ten times lower; NS Power cautioned against extrapolating these pilot results to broader rate classes (Section 2.1, Figure 2).
- The 2025 SCRR (Storm Cost Recovery Rider) appeared in the SRMC revenue calculations for the first time, and the MURB TOU tariff was included in the SRMC test for the first time following its November 2024 approval (Sections 3.4, 4.4).
- NS Power's cover letter (document [102223]) flagged that the SRMC Report has not influenced GRA rate-setting since 2009 and invited Board staff to discuss whether the annual report continues to provide regulatory value.
Disclaimer: This summary was generated by AI from the filings it describes. We take care to make it accurate, but errors are possible - and it isn't advice. Only the filings themselves are the record: if you're relying on something here, confirm it against the source documents or the Nova Scotia Energy Board's own record. Full disclaimer →
What was filed
Documents filed on this day
- N-1 Report
- 102223 Letter from NSPI enclosing report