Topic:"Energy Efficiency Resource Assessment Model" in M12696

Date Filed: February 3 , 2026 Page 3 of 37 1 percentages for comparison to the Board-directed conditions for the applicable period is 14 on August 15, 2021 via the Acceleration Agreement. 15 16 In its October 4, 2023, Decision in M11009, t...

AI summary The document references a decision by the NSEB in M11009, where the Board expressed concerns about NSPML's energy delivery performance and the impact on ratepayers. The Board emphasized the need for consistent performance on the Maritime Link over an extended period. NSPML highlights its successful completion of the Lower Churchill Project and the improved availability of the Maritime Link since 2018.

approximately 19% of NS Power load requirements with total delivery levels 1 The month of April 2024 fell short due to extreme weather conditions (specifically 22 continue for the complete term of the ECA, notwithstanding customers receivi...

AI summary The document discusses NS Power's performance in meeting contractual delivery obligations under the NS Block, highlighting strong delivery levels exceeding 170% of contracted amounts, with shortfalls addressed promptly. NSPML claims to have met the threshold requirements to end the Holdback as of May 1, 2024, which was implemented to address imbalances related to the Maritime Link.

Date Filed: February 3 , 2026 Page 16 of 37 terminate the Holdback as of May 1, 2024. Delivery levels in 2023 and 2024 were ~1.9 TWh, increasing to ~2.1 TWh in 2025. The Base NS Block is ~1.0 TWh per annum for the 35-year term of the ECA,...

AI summary The document discusses energy delivery levels from 2023 to 2025, the Base NS Block, and Supplemental Energy under the Energy Access Agreement. It also mentions the termination of the Holdback as of May 1, 2024.

Date Filed: February 3 , 2026 Page 30 of 37 1 8.0 REQUEST FOR RELIEF 26 In setting out the conditions for terminating the Holdback, the Board stated: 27 The Board concludes that the recent short-term NS Block and Make 28 29 up Energy deliv...

AI summary The Board has outlined conditions for terminating the Holdback mechanism, requiring consistent energy delivery performance over 12 consecutive months and a reduction in under-deliveries to reasonable levels. Since the commissioning of the LIL in April 2023, NSPML has been delivering promised benefits, and performance has improved significantly.

NSPML Responses to Bates White Information Requests 1 ii. Explanation of the "software update" and why the update was needed. 11 iii. If the LIL had been able to operate at 900 MW as designed, would the timing 12 and/or duration of this ou...

AI summary NSPML responds to information requests regarding software updates and the impact of an outage on the LIL. The response clarifies that the requested relief is not related to the Muskrat Falls Generating Station or Maritime Link assets. NSPML notes that the LIL has been tested up to 900 MW and that its operability has been confirmed.

PARTIALLY CONFIDENTIAL 1 Request IR-07: 2 3 Please refer to Exhibit N-1, page 28 line 27 to page 29 line 12. 4 a) What is NSPML's understanding of "the collective contractual bargain" that 5 "customers" were due? 6 b) Are there costs to "c...

AI summary The document outlines a response by NSPML to an information request regarding the 'collective contractual bargain' related to NS Block. NSPML explains that the contractual pillars include dispatchable renewable energy, access to market energy, and support for system integration. The response also addresses potential customer costs associated with delays and interruptions in NS Block deliveries.

3 The obligation pursuant to the Energy Access Agreement is for NLH to offer an average 4 of 1.2 TWh per year (September through August) until 2041 for potential purchase by NS 5 Power. As circumstances (e.g., load, other system attributes...

AI summary The Energy Access Agreement (EAA) obligates NLH to offer an average of 1.2 TWh of energy per year to NSP for potential purchase until 2041. NSPML argues that NLH has met or exceeded this average based on deliveries to date and that the EAA includes remedies for shortfalls. The EAA does not guarantee annual minimums, only an average over the term.

NSD new stream-reach development AWIA American Water Infrastructure Act of 2018 O&M operations and maintenance BA balancing authority PJM Pennsylvania–Jersey–Maryland BPA Bonneville Power Administration Interconnection CAISO California Ind...

AI summary The text outlines various acronyms and terms related to energy infrastructure and regulatory frameworks, including legislation, organizations, and technologies. It includes references to figures illustrating energy storage and hydropower capacity changes.

4.4.2 Combined Probability Method Combined wind and ice loads can also be predicted statistically by combining the probability of the occurrences of wind and ice to meet a desired return period. The underlying assumption is that the two ev...

AI summary The Combined Probability Method for predicting wind and ice loads assumes independence between wind and ice events, leading to overestimation compared to the more accurate historical storm method. The author questions why CSA/Environment Canada does not directly produce combined wind and ice load maps from model runs.

NON-CONFIDENTIAL 1 Energy deliveries are classified as "firm" once scheduled but we were unable to identify 2 where the ECA specifies that the amount of monthly firm energy deliveries are to be evenly 3 profiled across each hour, irrespect...

AI summary The text discusses the Energy & Capacity Agreement (ECA) not specifying even hourly profiling of firm energy deliveries, the Holdback Mechanism triggered by three days of interrupted NS Block deliveries, and expected lower availability of the Lower Churchill Project (LCP) post-commissioning. EqFOR data from NLH and the Maritime Link is referenced, highlighting performance metrics for transmission components.

Table 3: DAFOR and DAUFOP Overview (%) Asset Type Measure 1-Jan-2024 to 31-Dec-2024 1-Jan-2025 to 31-Dec-2025 Near-Term Planning Analysis Value Resource Planning Analysis Value Hydraulic: Regulated DAFOR 2.07 0.36 2.50 3.03 Hydraulic: Musk...

AI summary Table 3 provides an overview of DAFOR and DAUFOP values for different asset types from 2024 to 2025, including near-term and resource planning analysis values. The data highlights variations in outage rates for hydraulic and thermal assets, such as the Muskrat Falls Facility and Happy Valley.

Table 5: Hydraulic Weighted DAFOR – Regulated Hydro Maximum Continuous Unit Rating 12 Months Ended Dec 2024 12 Months Ended Dec 2025 Near-Term Analysis Value Resource Planning Analysis Value Generating Unit (MW) (%) (%) (%) (%) All Hydraul...

AI summary Table 5 presents the Hydraulic Weighted DAFOR (Derated Adjusted Forced Outage Rate) for regulated hydro units, showing the maximum continuous unit rating and outage rates for various units over different time periods, including 12 months ended December 2024 and 2025, as well as near-term and resource planning analysis values.

Table 7: Thermal Weighted DAFOR Generating Unit Maximum Continuous Unit Rating (MW) 12 months Ended Dec 2024 (%) 12 months Ended Dec 2025 (%) Near-Term Planning and Resource Planning Analysis Value (%) All Thermal Units – Weighted 490 37.2...

AI summary Table 7 presents the Thermal Weighted DAFOR (Derated Adjusted Forced Outage Rate) for various generating units, showing the percentage of forced outages over specific time periods. It includes data for all thermal units and individual units such as Holyrood TGS Unit 1, 2, and 3.

Table 8: Hardwoods/Stephenville GT DAUFOP Maximum Continuous Unit Rating 12 months Ended Dec 2024 12 months Ended Dec 2025 Near-Term Planning and Resource Planning Analysis Value GT Units (MW) (%) (%) (%) GTs 100 40.59 2.76 30.00 Stephenvi...

AI summary Table 8 provides DAUFOP (Derated Adjusted Utilization Forced Outage Probability) data for GT units at Hardwoods and Stephenville. The return to service date for Unit 3 was delayed due to the discovery of oil in the generator during commissioning, with cold commissioning expected to resume in early February 2026.

NSPML Responses to Consumer Advocate Information Requests 1 Request IR-01: 2 3 With respect to Exhibit N-1, p. 10 and Appendices A and C, please provide an excel 4 workbook with the data included in the graphs and tables, for the period Au...

AI summary The document outlines responses from NSPML to information requests from the Consumer Advocate. It includes requests for data in Excel format and clarification on compliance with a Board decision regarding energy delivery metrics. NSPML refers to an attachment for data and clarifies that a statement on energy delivery is for context, not direct compliance with a specific provision.

NSPML Responses to Industrial Group Information Requests 1 Request IR-05: 19 MWh including the delivery of Make-up Energy, and 27,237 MWh not including the 20 delivery of Make-up Energy. The shortfall from this September outage was all del...

AI summary NSPML provided details on energy shortfalls and Make-up Energy deliveries related to the NS Block Contract. In September 2023, a shortfall of 27,237 MWh was delivered as Make-up Energy in October 2023. Similar shortfalls occurred in September 2024 and 2025, with all Make-up Energy delivered by the end of the respective years. Annual delivery for 2025 was nearly complete, ensuring customers received all expected energy.

Heat capacity per volume $\rho \cdot c_p$ , $MJ/(m^3 \cdot K)$ Resistivity ρ T References [12] [12] [13] Gravel 2.4 0.55 0.33 - 0.5 Sand Clay/silt 2.2–2.9 1.6–3.4 0.2–0.59 1.0–2.5 0.4–0.67 0.56–1.11 Table 3.6 Thermal properties of some sub...

AI summary Table 3.6 presents the thermal properties of submarine soils, including heat capacity per volume and resistivity, with data for gravel, sand, and clay/silt. The table references sources [12] and [13].

iagram. The incremental cable price indicated above is nothing but an assumption for incremental cable price changes and must not be taken as an indication for cable prices based on LME copper values. By nature, all theories are based on a...

AI summary The text discusses the economic aspects of thermal design for submarine cables, highlighting the volatility of parameters such as technical lifetime, capital market terms, interest rates, and generation costs for losses. It notes that assumptions about these factors are necessary but uncertain, and that installation criteria may influence cable performance.

3.2.2 The Cigré Test Recommendation The only known mechanical test recommendation for submarine power cables is the Cigré test recommendation for submarine cables [15], referred to as Electra 171 in the following. The most prominent test o...

AI summary The Cigré test recommendation provides mechanical testing guidelines for submarine power cables, including tension calculations based on laying depth and dynamic forces. The test involves simultaneous bending and pulling, with equations provided for tension values under different conditions. However, the test may not fully account for extreme weather scenarios or dynamic forces in the catenary.

NSPML Application to Review the Holdback Mechanism (NSEB M12696) NSPML Responses to NSEB Information Requests 1 Request IR-03: 2 3 Please confirm, or explain otherwise, that there is no make-up energy outstanding as of February 3, 4 2026....

AI summary NSPML responds to NSEB information requests regarding energy balances and definitions. As of February 3, 2026, there was a 49 MWh credit balance for Base Block energy and a 211 MWh debit balance for Supplemental Energy. NSPML explains that Deferred Energy differs from Make-up and Supplemental Energy, and that energy deliveries have been stable since the LIL was commissioned in April 2023.

PARTIALLY CONFIDENTIAL 1 Request IR-10: 2 3 Reference: Exhibit N-1, p. 10: 4 • NSPML states that, "With the LIL's strong performance since its commissioning in 5 April 2023 and the continuing strong availability of the Maritime Link, custo...

AI summary The response to IR-10 discusses the performance of the Maritime Link and the NS Block Energy, noting that customers are receiving the full benefits of the investment. The NS Block Energy is defined as comprising both Base and Supplemental Energy delivered during peak and off-peak hours, respectively, over a specified period.

Table 7 Level of Exposure and Unsupplied Energy With Maritime Link 50 MW Combustion Turbines Added Year Load Forecast Island Level of Exposure Availability Unsupplied Energy Standby Load Exceeds Worst 2 wk Window Generation Generation MW G...

AI summary Table 7 presents data on the level of exposure and unsupplied energy in Nova Scotia with the addition of 50 MW combustion turbines from the Maritime Link. The table includes load forecasts, generation capacity, availability, and unsupplied energy for various years, showing increasing exposure and unsupplied energy as demand grows.

Table 8 Level of Exposure and Unsupplied Energy Known Avalon Peninsula Icing Events No Maritime Link 50 MW Combustion Turbines Added Year Load Forecast Island Standby Generation Level of Exposure Load Exceeds Generation Unsupplied Energy W...

AI summary Table 8 presents data on the level of exposure and unsupplied energy for the Avalon Peninsula during icing events, with and without the Maritime Link and 50 MW combustion turbines. It includes metrics such as load forecasts, standby generation, load exceeding generation, and unsupplied energy percentages for various years from 2017 to 2037.

REFERENCES - 1. CSA Standard C22.3 No. 1‐06 Overhead systems published October 2006 by Canadian Standards Association - 2. National Standard of Canada CAN/CSA‐C22.3 No. 60826:06 Design criteria of overhead transmission lines published Octo...

AI summary The document lists several references, including standards and studies related to overhead transmission lines and HVDC systems. These references are sourced from organizations such as the Canadian Standards Association, CIGRE, and Newfoundland and Labrador Hydro.

NSPML Responses to Small Business Advocate Information Requests 1 Request IR-01: 16 a) 17 1. NSPML does not calculate the value of replacement energy for each incidence of 18 Deferred Energy (whether resulting from an outage or a proactive...

AI summary NSPML explains that it does not calculate the value of replacement energy for deferred energy incidents, as agreements with NLH do not specify a monetary value for replacement energy compared to make-up energy. The Energy & Capacity Agreement (ECA) outlines procedures for delivering make-up energy during peak or off-peak hours to match the original schedule.

Table 2. Calculation of undelivered and makeup volumes of Base Block (2021-2025) (MWh)[37](#page-12-1) 1 Month/Year Contract Net Undelivered Net Undelivered Volume Delivered Undelivered Makeup (Month) (Cumulative) Aug-21 45,923 6,131 39,79...

AI summary Table 2 presents the calculation of undelivered and makeup volumes for the Base Block from 2021 to 2025, detailing monthly and cumulative data in megawatt-hours (MWh). The table includes columns such as net undelivered, volume delivered, undelivered makeup, and cumulative values across multiple years.

- NS Block, measured in MWh (excluding Make-up Energy), is received during each of 12 - consecutive months."[41](#page-18-1) In introducing this requirement, the Board also stated: - NSPML/NS Power may apply to the Board for relief if it c...

AI summary The requirement mandates NSPML to receive twelve consecutive months of NS Block volumes (excluding Make-up Energy) at least 90% of the total monthly volumes called for under the Energy and Capacity Agreement. This prevents over-reliance on Make-up volumes and ensures consistency and predictability in volume delivery.

11 - 13 Q. For the four months in which deliveries were below threshold, did NSPML claim - 14 that the deficiencies were explained by "good utility practice" and/or "exceptional - 15 circumstances?" 48 NSPML Application, page 10 lines 12 t...

AI summary NSPML claims that deficiencies in NS Block volumes during four months were due to 'good utility practice' and 'exceptional circumstances,' specifically citing a planned LIL outage in July 2023 and other factors related to the LIL's performance, not Muskrat Falls or the Maritime Link.

1 Q31. WHAT DOES THE HALDAR REPORT ACTUALLY FIND? 2 A31. The Haldar Report evaluates the reliability of the LIL as designed and constructed and 3 identifies potential future enhancements that could improve resilience under certain 4 operat...

AI summary The Haldar Report assesses the reliability of the Labrador Isthmus Link (LIL) as designed and constructed, noting that it meets original engineering standards. It does not find the design to be deficient, but identifies areas where future reliability could be enhanced. The report emphasizes that design decisions involve engineering judgment and that some areas may benefit from additional reinforcement.

rced outage rate on the LIL with equivalent forced outage rate originally assumed for the LIL? If so, please provide the Witness’s assessment and supporting evidence. 39. If the LIL were to consistently operate at 900 MW as designed, would...

AI summary The text contains a series of questions posed during a regulatory proceeding, focusing on the forced outage rate of the Labrador Island Link (LIL), its operational capacity, and the valuation of Muskrat Falls assets. These questions are aimed at eliciting technical assessments and supporting evidence from witnesses.

close to the full benefit has caused intergenerational 18 equity concerns. This holdback, in some small way, may ameliorate those concerns to the extent an imbalance continues.[12](#page-14-1) 19 20 21 That is no longer true. Customers are...

AI summary The text discusses the delivery of energy under the NS Block, noting that customers are receiving the 'original bargain' as over 90% of the NS Block was delivered, and over 100% of contracted amounts were met when including Make-Up Energy. It also references a legal citation regarding the LIL's forced outage rates and highlights the completion of the Make-Up Energy balance.

4.0 CONCLUSION NSPML has provided clear evidence that it has satisfied the test set by the Board to end the holdback mechanism. The Company's expert, Concentric, supports this position. Likewise, the CA and its expert support the Applicati...

AI summary NSPML has satisfied the conditions to end the holdback mechanism, supported by expert testimony and data showing energy delivery compliance. The company argues that future reliability concerns of the LIL should be addressed separately and that existing contracts with NLH are sufficient to manage potential issues. NSPML requests the Board to vacate the holdback and release accumulated amounts.