Nova Scotia Power filed its 2024 10-Year System Outlook Report, detailing a decade-long resource plan centred on coal phase-out, renewable expansion, and transmission modernization.

M11764 · Nova Scotia Power Inc. - 10-Year System Outlook Report - 2024

AI summary

The report, filed June 27, 2024 under Market Rule 3.4.2, uses Evergreen IRP scenario CE1-E1-R2 (net-zero 2035, no Atlantic Loop) alongside the Province's 2030 Clean Power Plan and NS Power's Path to 2030 as the planning basis, projecting average annual Energy Consumption Trends growth of 0.2% in net system requirement through 2034 (Figure 1).
NS Power's Integrated Resource Plan resource plan schedules retirement of all coal-fired capacity — Trenton, Lingan, and Point Aconi units — between 2027 and 2030, with offsetting additions including 600 MW of fast-acting combustion turbines, 350 MW of battery storage, 1,610+ MW of new wind (Rate Base Procurement, Green Choice, and future procurements), and conversion of Point Tupper 2 and Lingan 1/3/4 to alternative fuels (Figures 5–6).
Near-term System Reliability is under pressure: an 108 MW increase in forecast firm peak demand and a delayed return of Wreck Cove Unit 2 (now expected ahead of 2025/2026 winter, not 2024/2025) leave NS Power below its 20% planning reserve margin target for winter 2024/2025, with Lingan 2 cold reserve recall, thermal fleet optimization, and potential Maritime Link imports identified as mitigation strategies (Section 6.4, Figure 20).
The Transmission Planning section highlights growing grid-stability challenges from inverter-based resource (IBR) penetration as synchronous coal units retire, with electromagnetic transient (EMT) studies now mandatory for all transmission System Impact Studies from Study Group 32 onward, and the NS-NB Ns Nb Reliability Intertie Project targeting a 2028 in-service date to address RoCoF constraints (Sections 4.1, 7.8–7.9).
On Environmental Compliance, NS Power reports 42.5% renewable energy sales in 2023, forecasts 51–64% RES compliance through 2025–2027 (Figure 14), and continues to engage with Environment and Climate Change Canada on the pending Clean Electricity Regulations (Canada Gazette 2 expected Q4 2024), while managing residual SO₂ and mercury exceedances from 2021–2022 (Section 5.2–5.3).

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What was filed

Documents filed on this day

N-1 Report exhibits