AI-generated summary
· Application · 12/23/2020
Board consultants Bates White and Synapse filed detailed comments on Nova Scotia Power's 2020 Integrated Resource Plan, raising concerns about planning reserve margin optimality, carbon valuation, wind procurement scale, and regional transmission risk
AI summary
- Bates White assessed NSPI's compliance with nine sub-parts of FAM Audit Recommendation IX-1 (IRP Planning), finding full compliance on peak load transparency, investment alternatives, natural gas assessment, ELCC determination, and stakeholder engagement, while flagging that NSPI has not demonstrated a 20% Planning Reserve Margin is 'optimal' — E3's own study showed a PRM as low as 17.8% could meet reliability criteria (Bates White Comments, p. 6–7)
- Bates White cautioned that the IRP's strong preference for firm imports and regional transmission expansion introduces material execution risk, recommending NSPI build a 'circuit breaker' into its evergreen process, avoid linking thermal retirements to regional strategy success, and use all-source competitive RFPs to spur regional cooperation (Bates White Comments, pp. 17–18, 26–27)
- Synapse found that NSPI's decision not to monetize Cap-and-Trade overcompliance revenues significantly understates the value of earlier coal retirement and accelerated wind build: valuing incremental CO₂ reductions at the June 2020 auction clearing price of $24/tonne yields approximately $374 million NPV benefit from retiring coal by 2030 vs. 2040 (Scenario 3.1C vs. 2.1C), and narrows the NPVRR cost gap from 4.5% to 1.7% (Synapse Comments, Tables 1–2, pp. 7–10)
- Synapse recommended NSPI expand its wind procurement target from 50–100 MW to up to 631 MW by 2025 — the level found optimal under the low-wind-cost sensitivity ($1,500/kW vs. the $2,100/kW baseline) — arguing that restricting solicitation size forecloses economies of scale and undervalues earlier emissions reductions (Synapse Comments, pp. 13–14, 18)
- Both consultants endorsed prioritizing the Reliability Tie (a second 345 kV connection to New Brunswick) as the single most enabling near-term investment, with Synapse recommending NSPI initiate a regulatory proceeding in the first half of 2021 and report to the Board on right-of-way and federal funding status (Bates White Comments, pp. 20–21; Synapse Comments, pp. 11, 17)
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What was filed
Documents filed on this day
- N-10 Comments - Bates White
- N-11 Comments - Synapse