Topic:"Capacity Market Participation" in M12696

As expected with a complex capital project, availability levels for the Maritime Link were lower in the first few years after commissioning, with monopole availability of 81 percent NSPML Interim Assessment 2017 (M07718), Decision. M10206,...

AI summary The Maritime Link project experienced lower availability in its early years, but performance improved significantly after 2020. In contrast, NLH faced significant delays and cost overruns in the Lower Churchill Falls Project, which impacted Nova Scotians through higher initial costs.

13 1 Specifically: 2 3 • Deliveries of Base NS Block and Make-up Energy exceeded 90 percent of Contract 4 Amounts every month and were over 100 percent in every month but September 5 in advance of the winter period10 2023 which fell short...

AI summary The document outlines the performance of NS Block and the LIL in terms of energy delivery and reliability. NS Block delivered more than 140% of the contracted amount, with strong delivery levels allowing NS Power to incorporate it into system planning. The LIL has demonstrated high reliability with an eqFOR below 3% since commissioning in April 2023.

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.

19 V. NLH PLANNED AND UNPLANNED OUTAGES

AI summary The section discusses NLH's planned and unplanned outages, focusing on their implications for grid reliability, operational costs, and potential impacts on energy agreements like the ECA. It likely addresses outage management strategies and their alignment with regulatory frameworks.

CONFIDENTIAL (ATTACHMENTS ONLY) 1 Request IR-04 2 3 Please refer to Exhibit N-1, page 5 lines 31-32, page 11 lines 24 to page 12 line 2, and Board 4 Matter M05419. 5 6 a) Please provide the actual annual availability (%) of the LIL for 202...

AI summary The document contains a series of information requests related to the availability and performance of the Labrador Intermediate Line (LIL) and Muskrat Falls Generating Station, including annual availability, forced outage rates, transfer capability, and flow data. It also requests the CIGRE Report and assumptions used in a regulatory proceeding (M05419).

IMPACT OF THE LABRADOR – ISLAND HVdc LINK ON ISLAND SYSTEM RELIABILITY The Labrador – Island HVdc Link has the following nominal ratings: - ±320 kV operating voltage (bipole); - 2 x 450 MW, 1406 A per pole; - 900 MW at Muskrat Falls; - 92....

AI summary The Labrador-Island HVdc Link's 900 MW capacity and 92.1 MW losses impact Island System Reliability, modeled as a generator with a forced outage rate. Additional 50 MW combustion turbines are required to maintain LOLH below 2.8 hours/year. Generation planning ensures firm energy supply until 2036, with future sources like Portland Creek and wind needed thereafter.

System Planning Department, Newfoundland and Labrador Hydro October 30, 2011 Stephenville 50 MW CTs to retire in 2022 and 2024 respectively By comparison the 2017 peak load forecast for the Island Interconnected System equals 1704 MW. Base...

AI summary The document discusses the retirement of two 50 MW combustion turbines in Stephenville in 2022 and 2024, and the potential need for additional combustion turbine generation due to expected peak load exceeding total generation supply in 2022, considering the risk of a bipole outage.

Bipole Outages – No Maritime Link Without the Maritime Link, the available generation to supply the Island Interconnected System following a bipole outage to the Labrador – Island Link equal 1468.5 MW. Given that the 2017 load forecast for...

AI summary The document analyzes the capacity shortfall in the Island Interconnected System during a bipole outage without the Maritime Link, highlighting a 235.5 MW shortfall and 637 hours of exposure in 2017. It also compares the risk of outages in the existing Island Isolated System, noting a 1.97% probability of unsupplied energy in 2012 due to simultaneous failure of TL202 and TL206.

- 1: 230 kV transmission line Bay d'Espoir to Western Avalon is built prior to 2017 increasing transfer to east coast for loss of TL202 and TL206. - 2: 170 MW CCCT in 2022 at Holyrood and Hardwoods 50 MW CT retired in 2022 - 3: 50 MW CT in...

AI summary This text discusses the retirement and replacement of various power generation units and transmission lines, as well as the need for additional capacity by 2036-2037 to meet LOLH targets. It highlights the retirement of older units and the planned installation of new CCCT units.

rates of all other generating units to derive the LOLH expectation target. Based upon the Strategist ® analysis, the LOLH target is not exceeded until 2036 requiring additional capacity in 2036‐2037. To eliminate the hours of exposure to z...

AI summary The document discusses the LOLH expectation target and the need for additional capacity by 2036-2037. It evaluates the cost and impact of installing combustion turbines to mitigate exposure to unsupplied load during a permanent bipole outage, suggesting incremental additions over time as a more cost-effective approach.

Labrador Hydro October 30, 2011 11 Transmission planning for stable operation of the HVdc converter station at Soldiers Pond is possible with at least one 230 kV transmission line out. The analysis of level of exposure and unsupplied energ...

AI summary The analysis evaluates HVdc transmission line reliability, emphasizing that a 1:50 year return period design ensures higher availability than the existing Isolated Island System. It highlights reduced unsupplied energy during repairs, the role of the Maritime Link in minimizing combustion turbine needs, and the necessity of a 50 MW combustion turbine by 2032 for system reliability.

PARTIALLY CONFIDENTIAL 1 • Nova Scotians incurring 20 percent of the cost of the Lower Churchill Project to 2 secure 20 percent of the output. 3 4 NSPML reaffirms its belief that customers have received the collective contractual bargain 5...

AI summary NSPML asserts customers received the 'collective contractual bargain' post-LIL commissioning, emphasizing 35 years of renewable energy from the NS Block and its role in avoiding fossil fuel units. The NS Block's dispatchable energy supports system reliability and integration, with deferred energy fully delivered. NS Power plans increased use of dispatchability as wind capacity expands.

1 Parties through additional flexibility in the scheduling of the Nova Scotia Block. 2 Conversations to date have revolved around availing of additional Maritime Link capacity 3 in the winter period. 4 5 There are also references in the or...

AI summary The document discusses conversations regarding the use of additional Maritime Link capacity during the winter period, referencing dispatchability of the NS Block, redelivery protections, and reliability expectations compared to the generator it would replace.

or multipurpose constraints. Figure 29. Annual revenue streams for selected PSH plants (energy + capacity + ancillary services) Source: FERC Electric Quarterly Reports Note: The plot shows gross revenue (i.e., the cost of pumping is not ne...

AI summary The figure illustrates annual revenue streams for selected pumped storage hydropower (PSH) plants, including energy, capacity, and ancillary services. Data sources include FERC Electric Quarterly Reports, with exclusions noted for partial-year data and unmatched transactions. Specific plants like Taum Sauk, Seneca, Northfield Mountain, and Bear Swamp are referenced, along with ISO-NE and EIA Form 860 data.

In ISO-NE, at least two thirds of hydropower capacity receive uplift revenue and provide reserves and voltage control. Market data from ISOs/RTOs help document hydropower's versatility in the provision of grid services. Figure 53 shows how...

AI summary In ISO-NE, two-thirds of hydropower capacity receives uplift revenue for grid services like reserves and voltage control. Market data shows hydropower's role in spinning reserves, regulation, and black start capabilities, with trends linked to solar/wind penetration and NERC standard revisions. Figure 53 (FERC Electric Quarterly Report) illustrates service provision from 2008-2017.

zed reserve resources are online units that follow economic dispatch and are only partially loaded. They must be able to increase output within 10 minutes following PJM dispatcher request to an event. 85 In 2018, hydropower and PSH contrib...

AI summary The text highlights that hydropower and pumped storage hydropower (PSH) contribute significantly to PJM and CAISO's frequency regulation and reserve products, with specific percentages (7.5% in 2018, 6.8% and 5.4% in 2019) for synchronized primary reserve. Data is sourced from the PJM State of the Market Report.

eed additional capacity to meet its forecasted load. Competitive solicitations (e.g., requests for proposals) would also be allowable methods for setting energy and capacity rates under the new rules. Second, Order 872 reduces the capacity...

AI summary Order 872 lowers the capacity limit for ISO/RTO renewable facilities from 20 to 5 MW, allowing larger facilities to rebut nondiscriminatory access presumptions. Hydropower stakeholders opposed this change, arguing PURPA is critical for hydropower due to federal tax credits and RPS targets, and noting developers may lack ISO/RTO market expertise.

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.

NSPML Responses to Consumer Advocate Information Requests 1 2 3 4 5 accordance with the 30-day outage coordination period previously established by the system operators for outages affecting the delivery of the NS Block, including planned...

AI summary NSPML provided responses to consumer advocate information requests regarding outage coordination periods, planned outages, and delivery of the NS Block. Data includes under-delivered amounts, total undelivered for the period, and holdback criteria triggers related to the 2013 application commitment.

1: New 50 MW CT on Avalon Peninsula in 2014 brings total to 150 MW, Hardwoods and Stephenville 50 MW CTs to retire in 2022 and 2024 respectively By comparison the 2017 peak load forecast for the Island Interconnected System equals 1704 MW....

AI summary The document discusses the retirement of two 50 MW combustion turbines (CTs) in 2022 and 2024 and the addition of a new 50 MW CT on the Avalon Peninsula in 2014, increasing total capacity to 150 MW. It also references a 2017 peak load forecast for the Island Interconnected System and the need to assess additional CT generation based on the risk of bipole outages.

Bipole Outages – No Maritime Link Without the Maritime Link, the available generation to supply the Island Interconnected System following a bipole outage to the Labrador – Island Link equal 1468.5 MW. Given that the 2017 load forecast for...

AI summary The document analyzes the potential impact of a bipole outage on the Island Interconnected System without the Maritime Link, highlighting a 235.5 MW capacity shortfall and a 0.14% probability of unsupplied energy in 2017. It also compares this scenario with the existing Island Isolated System, noting a higher risk of unsupplied energy in the event of simultaneous failures of transmission lines TL202 and TL206.

the 1:25 year design for TL202 and TL206, the probability of unsupplied energy in 2017 for the Isolated Island Scenario is 0.0987 \ 0.04 = 0.00394 or 0.39%. The resultant availability equals 99.6%9 . Table 5 summarizes the exposure levels...

AI summary The analysis compares exposure levels and reliability under Isolated Island and Interconnected Scenarios, highlighting that capacity additions (e.g., 170 MW CCCT) reduce unsupplied energy risks in the Isolated Island Scenario. In contrast, the Interconnected Scenario shows increasing exposure due to delayed capacity additions until 2036-2037, though annual exposure remains below current Isolated Island levels.

- 1: 230 kV transmission line Bay d'Espoir to Western Avalon is built prior to 2017 increasing transfer to east coast for loss of TL202 and TL206. - 2: 170 MW CCCT in 2022 at Holyrood and Hardwoods 50 MW CT retired in 2022 - 3: 50 MW CT in...

AI summary The text outlines the retirement and replacement of various power generation units and transmission lines, with a focus on the 230 kV transmission line and the retirement of combustion turbine units. It also discusses LOLH calculations and the need for additional capacity in 2036–2037 based on the Strategist ® analysis.

rates of all other generating units to derive the LOLH expectation target. Based upon the Strategist ® analysis, the LOLH target is not exceeded until 2036 requiring additional capacity in 2036‐2037. To eliminate the hours of exposure to z...

AI summary The text discusses the LOLH expectation target derived from the Strategist ® analysis, indicating that the target is not exceeded until 2036. It also evaluates the cost and impact of adding combustion turbines incrementally to manage exposure to unsupplied load in the event of a permanent bipole outage, showing that incremental additions are more cost-effective than a wholesale 800 MW plant.

ur once during the 50 year service. 11 Transmission planning for stable operation of the HVdc converter station at Soldiers Pond is possible with at least one 230 kV transmission line out. The analysis of level of exposure and unsupplied e...

AI summary The analysis evaluates HVdc line design for Soldiers Pond, emphasizing system availability, unsupplied energy reduction, and reliance on combustion turbines. The Maritime Link reduces short-term turbine needs, while a 1:50 year design improves reliability. A 50 MW combustion turbine is projected for 2032 to maintain availability during peak repair periods.

NSPML Responses to Small Business Advocate Information Requests 1 Request IR-01: 2 3 Refer to M12696, Exhibit N-1, Application to Review the Holdback Mechanism, submitted 4 by NSPML on February 3, 2026 (the "Application"), Section 1. Intro...

AI summary NSPML responds to information requests regarding the Holdback Mechanism, citing the energy delivered via the Maritime Link and its benefits, including renewable energy and financial value. The response also addresses potential disallowances and remedies for unplanned outages.

15,236 46,766 -31,530 Aug-23 83,742 83,265 477 62,197 -61,720 Sep-23 81,041 53,804 27,237 20,904 6,333 Oct-23 83,742 83,742 0 71,399 -71,399 Nov-23 81,041 81,041 0 43,905 -43,905 Dec-23 83,742 80,959 2,784 51,369 -48,586 Jan-24 83,514 83,5...

AI summary The table presents the calculation of undelivered and makeup volumes of Base Block from 2021 to 2025, measured in MWh. It includes monthly data across multiple years, showing fluctuations in delivered and makeup volumes.

tion of energy efficiency in Georgia Power's 2013 integrated resource plan, including cost effectiveness, rate and bill impacts, and lost revenues, economics of fuel switching and renewable resources. South Carolina PSC Docket No. 2013-392...

AI summary Discusses Georgia Power's 2013 integrated resource plan, focusing on energy efficiency, cost effectiveness, and renewable resources. Also addresses South Carolina PSC Docket 2013-392-E, where Hamilton Davis testified on behalf of the South Carolina Coastal Conservation League and SACE regarding capacity needs, energy efficiency, and solar power as an energy resource.

16 Q14. WHY DO YOU DISAGREE WITH MR. MUSCO'S CONCLUSION? 17 A14. In my opinion, Musco's analysis does not appropriately distinguish between 18 commissioning activities necessary to place a facility into service and post-commissioning 19 ac...

AI summary The response argues that Musco's analysis incorrectly equates post-commissioning activities with a facility not being ready for service. It explains that commissioning ensures a facility is safe and reliable for service, while post-commissioning work is common and does not indicate improper readiness.

5 A48. The record demonstrates that the concerns that gave rise to the Holdback Mechanism have 6 been addressed. 7 Following commissioning of the LIL, deferred energy was reduced below the 8 Board's ten percent threshold and subsequently e...

AI summary The record shows that concerns leading to the Holdback Mechanism have been resolved. Deferred energy levels fell below the Board's 10% threshold and were eliminated. Customers received energy from the NS Block via direct deliveries and make-up energy. Without limited outages, monthly deliveries would have exceeded the threshold during the Compliance Period.

Make-up Energy exceeded 90 percent of Contract Amounts every month and were over 100 percent in every month but September 2023 which fell short due to a planned outage in advance of the winter period. 1. Is the statement on p. 11 intended...

AI summary The text discusses NSPML's compliance with a Board Decision from October 2023, referencing energy performance against contract amounts and requesting clarification on compliance periods and data workbook submission. It also references Exhibit N-1, Appendix B, for further details.

ate (%) of the Maritime Link, as proposed by NSPML in M05419. Please include the base case and any sensitivities for this assumption used in M05419. 13. Please refer to Exhibit N-1, page 5 lines 31-32, page 11 lines 24 to page 12 line 2, a...

AI summary The document contains a series of questions related to the availability, outage rates, and transfer capabilities of the Maritime Link and Muskrat Falls Generating Station, referencing Board Matter M05419 and other exhibits. These questions are aimed at obtaining detailed operational and performance data for regulatory review.

ins with the data itself, and on that point I agree with NSPML that over the Compliance Period, NSPML's actual NS Block deliveries exceeded the 90% threshold. I also agree with NSPML that but for the LIL outages identified by NSPML in July...

AI summary The text discusses NSPML's compliance with delivery thresholds during the Compliance Period, noting that actual deliveries exceeded 90% and attributing deviations to LIL outages in 2023 and 2024. The analysis is based on evidence filed by John Wilson.

7 It is also clear from the contents of Table 2 that the actual deliveries since Commissioning 8 of the LIL are no longer consistent with the circumstances that originally supported the 9 implementation of the holdback mechanism, with full...

AI summary The text discusses the inconsistency between actual deliveries from the Labrador Island Link (LIL) and the original conditions that justified the holdback mechanism, particularly regarding full contractual deliveries and reliable winter delivery performance.