Topic:"Demand Side Management" in M12768

-28, March 26, 2020, and in accordance with the Annual Reporting provisions on page 4 of the ELIADC Tariff. March 26, 2026 C. Henwood Active Demand Control (ADC) Load Shifting Differential for 2025. The Board-approved 2024 ELIADC Energy Ch...

AI summary The 2025 ELIADC Energy Charge became effective February 1, 2025, following the Board's Interim Order (M11989). A positive ADC differential in 2025 obligated PHP to pay NS Power's actual CBL cost to serve, including variances from dispatch schedules, plus a minimum payment calculated as NS Power's incremental costs plus $4.00 per MWh supplied.

Year PHP Load (GWh) ADC Load Shifting Differential ($M) Benefit to Other Customers ($M) 2020 875 6.6 7.3 2021 966 (16.7) 3.9 2022 957 (48.9) 3.8 2023 670 (33.6) 2.7 2024 766 (0.8) 3.1 2025 691 1.5 4.4 In response to Recommendation XIV-1 in...

AI summary The table presents annual data on PHP Load (GWh), ADC Load Shifting Differential ($M), and Benefit to Other Customers ($M) from 2020 to 2025. The data shows fluctuating values, with a notable negative differential in 2021 and 2022. The text references a recommendation from the 2020-2021 FAM Audit Report (M10416) and indicates additional context will be provided.

Operation Summary Despite challenges resulting from NS Power's cyber incident, the Nova Scotia Power System Operator (NSPSO), NS Power Energy Marketing team, and PHP adapted and worked collaboratively forthe benefit of all customers. The r...

AI summary NS Power's cyber incident posed challenges, but collaboration between NSPSO, NS Power Energy Marketing, and PHP ensured customer benefits. Stable fuel pricing relative to CBL forecasts and Active Demand Control's flexibility contributed to a positive 2025 ADC Load Shifting Differential.

Off-Schedule Summary In 2025 there were 95 hours in which PHP chose to deviate from the submitted schedule (Code 5, "PDN") spread across 21 unique events (where a single event can span multiple hours). These PDN hours comprised 1.1 percent...

AI summary In 2025, PHP had 95 off-schedule hours (1.1% of total), leading to $706,609 system cost impact, with $529,957 reduced ADC credit. PHP's net balance is $149,304. Reasons included fulfilling orders, managing silo levels, and maintaining load.

Other Code Summary As in previous Tariff years, PHP remained responsive to NSPSO requests to move load up (i.e. NSPSO-initiated ramp up (Code 1, "NUP")) or down (i.e. NSPSO-initiated ramp down (Code 2, "NDN")). The instances of NUP has dro...

AI summary PHP has been responsive to NSPSO requests to adjust load, with a significant decrease in instances of NSPSO-initiated ramp up (Code 1) and a moderate decrease in ramp down (Code 2). The number of maintenance-driven deviations (Code 3) remained similar to 2024, and instances of new dispatch agreements (Code 4) also decreased. However, tracking of Cause Codes 1, 2, and 4 was disrupted due to a cyber incident in late-April through early-August.

Cause Code 2 - NDN - NSP Energy System Operator initiated ramp Down Total Billed $ 100.85 Cause Code 3 - PFL - PHP Failure to Load due to equipment or process constraints ADC $ (2.20) Cause Code 4 - PNA - PHP and NSP Agreement to new dispa...

AI summary This text details various cause codes related to energy system adjustments and billing, including ramp down events, failure to load due to equipment constraints, and adjustments related to the Active Demand Control (ADC) program. It also provides information on the total cost to serve PHP in 2025.

Extra Large Industrial Active Demand Control (ELIADC) Tariff 2025 Annual Report (NSEB M12768) NSPI Responses to BW Information Requests Request IR-3: 24 increased communication between NS Power ER&M and the Nova Scotia Power System 25 Oper...

AI summary The document discusses NSPI's response to BW information requests regarding the ELIADC Tariff 2025 Annual Report. It outlines increased communication between NS Power ER&M and the NSPSO, collaboration with PHP, and the resumption of day-ahead and real-time schedules following IT system restoration. It also describes the roles of NS Power E&RM and NSPSO in administering the ELIADC Tariff and the suspension of OATT Standards of Conduct during a cyber incident.

NON-CONFIDENTIAL 1 Request IR-5: 2 3 Please refer to PDF page 3, "Load Variations." Did PHP's lower-than-forecasted demand 4 increase system costs, such as through retention of higher capacity, higher reserves, greater 5 unit commitment, o...

AI summary The response to Request IR-5 explains that PHP's lower-than-forecasted demand did not affect NS Power's long-term procurement decisions, such as gas and power RFPs, as PHP load is not currently included in these decisions. The modeling in PortOps ensures PHP pays for all generation serving its demand.

Extra Large Industrial Active Demand Control (ELIADC) Tariff 2025 Annual Report (NSEB M12768) NSPI Responses to IG Information Requests 1 Request IR-1: 6 1 TWh (1,000 GWh). The 2025 actual benefit ($4.4 million) falls below this forecast r...

AI summary The 2025 ELIADC Tariff Annual Report indicates that the actual benefit ($4.4 million) fell below the 2019 forecast, partly due to fuel price volatility from 2021-2024. However, the benefit was the second-highest in the six-year operating history, showing improved alignment with forecasts as fuel markets have stabilized.

EXTRA LARGE INDUSTRIAL ACTIVE DEMAND CONTROL TARIFF Page 1 of 7 Schedule 1: Active Demand Control Energy Supply Protocol Part A – Definitions ADC : Active Demand Control. ADC Operating Procedure : Procedure document maintained by Nova Scot...

AI summary This document outlines the definitions and procedures related to the Extra Large Industrial Active Demand Control (ADC) Energy Supply Protocol, including key terms such as Customer Baseline Load (CBL), Dispatchable Hours, and Intra-Day Demand Schedule. It details the roles of Nova Scotia Power System Operator (NSPSO) and Nova Scotia Power (NS Power) in managing ADC operations and forecasting energy demand.

EXTRA LARGE INDUSTRIAL ACTIVE DEMAND CONTROL TARIFF Page 2 of 7 Schedule 1: Active Demand Control Energy Supply Protocol by NS Power. Refer to Part B. The results of these runs will be presented and shared with PHP as ADC Schedule 1. NS Ma...

AI summary This document outlines the Extra Large Industrial Active Demand Control Tariff, including schedules and protocols related to energy supply, demand forecasting, and system operations managed by NS Power and involving Port Hawkesbury Paper LP.

Part B – Protocol Forecasting and Operation - (1) Annually, no later than the seventh business day of November, NS Power will forecast the Monthly Demand Schedule, Weekly Demand Schedule, and monthly and weekly limits based on PHP's demand...

AI summary NS Power is required to provide regular demand forecasts to PHP and NSPSO, including monthly, weekly, and daily schedules. These forecasts are used for system planning and optimization, with updates provided as needed throughout the year.

EXTRA LARGE INDUSTRIAL ACTIVE DEMAND CONTROL TARIFF Page 3 of 7 Schedule 1: Active Demand Control Energy Supply Protocol - (a) With respect to forecast PHP annual capital shutdowns, PHP will provide a minimum of one month's advance notice...

AI summary This section outlines the procedures for providing advance notice of shutdowns and adjusting demand schedules in the Extra Large Industrial Active Demand Control Tariff. It also details how NS Power, NSPSO, and PHP will exchange information on a confidential basis.

EXTRA LARGE INDUSTRIAL ACTIVE DEMAND CONTROL TARIFF Page 4 of 7 Schedule 1: Active Demand Control Energy Supply Protocol 7.8. PHP discrete line operation (i.e. what lines are in and out of service in a period) – PHP. NS Power and PHP agree...

AI summary The document outlines the terms of the Active Demand Control Energy Supply Protocol between NS Power and PHP, including the provision of system information for operational purposes and the calculation of ADC benefits annually in accordance with the CBL & ADC Benefit Calculation.

Part C – Conditions - (9) Subject only to reasons of health, safety, environmental, system reliability, and Force Majeure events, PHP must not deviate from the NS Power/NSPSO final demand schedule. NS Power/NSPSO must comply with the weekl...

AI summary Part C outlines conditions for PHP and NS Power/NSPSO regarding compliance with demand schedules, restoration of operations after disruptions, and communication protocols. Deviations from schedules must be tracked and reported, with updates to Appendix 1 filed with the NSUARB.

EXTRA LARGE INDUSTRIAL ACTIVE DEMAND CONTROL TARIFF Page 5 of 7 Schedule 1: Active Demand Control Energy Supply Protocol - (12) Subject to available generation or load, as the case may be, efforts will be made to reconcile variances in a t...

AI summary This section of the Extra Large Industrial Active Demand Control Tariff outlines the energy supply protocol, including procedures for reconciling variances, scheduling and operations team requirements, compliance with NS OATT and NS Market Rules, and the dispatch authority of NS Power and NSPSO.

EXTRA LARGE INDUSTRIAL ACTIVE DEMAND CONTROL TARIFF Page 7 of 7 Schedule 1: Active Demand Control Energy Supply Protocol

AI summary The document outlines the Active Demand Control Energy Supply Protocol as part of the Extra Large Industrial Active Demand Control Tariff, which is on page 7 of 7.

CONFIDENTIAL (Attachment Only) 1 Request IR-5: 2 3 Reference: 2025 Annual Report, Exhibit N-1, p. 3/9, Load Variations 4 5 PHP's initial 2025 forecast totalled 811 GWh. There were revisions to PHP's 6 7 load forecast through the year, with...

AI summary The document requests clarification on PHP's 2025 load forecast, including discrepancies between initial forecasts and actual demand, the timeline for revisions, and the process for handling forecast changes. It also asks about the impact of forecast divergence on dispatch optimization and the calculation of the CBL energy charge.

REDACTED 1 incentive for PHP to follow dispatch and retain its 25 percent share of the ADC Load 2 Shifting Differential. In 2021-2024, the ADC Load Shifting Differential was negative, and 3 therefore no Off-Schedule Charges were applied. 4...

AI summary The document discusses the ADC Load Shifting Differential and Cause Code tracking issues in 2025. It includes financial details related to PHP and requests for information regarding incomplete Cause Code tracking and normalization of data for accurate year-over-year comparisons.

1 Request IR-1: 27 (a) The current process to determine the generation which served PHP involves running two 28 models in PortOps – one with the system as it ran in actuality ("With PHP"), and a second, 29 modeled system with PHP's load re...

AI summary The current process for determining the generation that served PHP involves running two models in PortOps: one with PHP's load and one without. Running this process multiple times for each Cause Code could create conflicts and invalidate results due to unit start and stop changes. PH Biomass is designated as a must-run unit and remains unaffected in this modeling process.

M12768 – Nova Scotia Power Incorporated – Extra Large Industrial Active Demand Control Tariff – 2025 Annual Report On March 26, 2026, Nova Scotia Power Incorporated filed its Annual Report on the performance of the Extra Large Industrial A...

AI summary Nova Scotia Power Incorporated filed its 2025 Annual Report on the performance of the Extra Large Industrial Active Demand Control Tariff (ELIADC), which is an annually adjusted, below-the-line tariff serving Port Hawkesbury Paper. The tariff allows NS Power to manage demand in response to system conditions, with savings shared between the company and its customers. However, the ADC load shifting differential was positive in only two years since the tariff's inception.

(b) Please provide a copy of any FAM SWG presentation materials and 1 2 3 4 2026 M12768 NOVA SCOTIA ENERGY BOARD 24 (iii) System conditions and dispatch optimization; 1 (iv) Tariff administration or timing effects; and 2 (v) Any other effe...

AI summary The text includes requests for information regarding the ADC differential, the impact of applying the 2024 ELIADC energy charge in January 2025, and the expected benefits to other customers. It also references FAM SWG presentation materials and a matter number (M12768).

Request IR-12: Reference: 2025 Annual Report, Exhibit N-1, p. 7 and 8/9 - Preamble: In response to Recommendation XV-3 in the 2022-2023 FAM Audit Report (M11533), NSPI states that it has updated Tables 1, 2 and 3 comparing 2025 and prior y...

AI summary The text outlines a request for clarification regarding NSPI's ability to quantify load-shifting benefits and costs related to the ELIADC Tariff, particularly in light of a cybersecurity incident affecting data access on PI and PortOps platforms. It asks whether the incident is causing delays and what steps NSPI has taken to address the issue.

Request IR-2: Refer to the following sections of the Summary of the 2025 Tariff Year in the 2025 Report: ,Load Variations, on page 3, and Off Schedule Summary, on page 4: - a) Please identify the provisions of the ELIADC tariff that allow...

AI summary Request IR-2 seeks clarification on the ELIADC tariff provisions regarding forecast revisions by PHP, including limits on revisions, Force Majeure terms, communication of trade challenges, and the financial impact of deviations in 2025. It also asks about the likelihood of similar outcomes in 2026.

1 M12768 2 3 NOVA SCOTIA ENERGY BOARD 4 5 IN THE MATTER OF: The Public Utilities Act, R.S.N.S. 1989, c.380 6 7 - and - 8 9 IN THE MATTER OF: Extra Large Industrial Active Demand Control (ELIADC) 10 Tariff – 2025 Annual Report 11 12 INFORMA...

AI summary This document is a formal information request submitted to Nova Scotia Power, Inc., by Bates White Economic Consulting, regarding the Extra Large Industrial Active Demand Control (ELIADC) Tariff – 2025 Annual Report. The request was issued on April 17, 2026, by the Nova Scotia Energy Board.

Request IR-1: - For each month of 2025, please provide: - a. ELIADC Energy Charge - b. CBL Energy Charge - c. Customer Baseline Adder - d. Variable Capital Charge

AI summary Request IR-1 asks for specific monthly data from 2025, including ELIADC Energy Charge, CBL Energy Charge, Customer Baseline Adder, and Variable Capital Charge.

May 29, 2026 Delivered by e-mail Crystal Henwood Regulatory Affairs Officer/Clerk of the Board Nova Scotia Energy Board 3rd Floor, 1601 Lower Water Street Halifax, NS B3J 3S3 Vincent Musco Bates White Economic Consulting Via e-mail Subject...

AI summary This document discusses the 2025 Annual Report on the ELIADC Tariff by Nova Scotia Power, Inc. It highlights that the actual cost to serve Port Hawkesbury Paper was below the forecasted cost, resulting in a positive ADC differential. The report also notes that PHP's load was 15% below its forecast due to challenges in forecasting energy demand in the paper market.

Concerns In its 2025 Report, NS Power states that it has met the three Bates White recommendations from the 2022-2023 FAM Audit. However, the SBA notes that NS Power acknowledged that it would not be able to address the requested hourly mo...

AI summary NS Power claims to have met the Bates White recommendations from the 2022-2023 FAM Audit, but the SBA notes that it did not provide the promised update on load shifting benefits in March 2026. NS Power plans to include more detailed quantification of load shifting benefits in the 2025 ELIADC Tariff Annual Report after consulting with Bates White.

Relationship to the ELID Proceeding At the onset of its submission the IG provided that its comments were "submitted with the understanding that the ELIADC expires at the end of 2026 … [a]ccordingly, these comments are largely observationa...

AI summary The Industrial Group (IG) submitted comments on the ELID proceeding, noting that the ELIADC expires in 2026 and that their comments are observational rather than recommending changes. They raised concerns about PHP's ability to revise load and capture dispatch optimization benefits when operating below forecast levels, suggesting these issues be addressed in the ELID tariff design. The Company agrees that ELID tariff design matters are being addressed in Matter M12661.

ere is no cause for concern. There were 95 total Cause Code 5 hours, or only 1.1% of all hours in the year, which as Bates White notes was the second lowest total of the six years of Tariff operation. The IG submits on page 2 that "the abs...

AI summary The text discusses the low occurrence of Cause Code 5 hours, the IG's concerns about load forecast revisions and interest on post-year-end balances, and stakeholder requests for transparency and improved reporting on the ELIADC Tariff. NS Power is responsible for providing updates and addressing audit recommendations.

M12768 – Nova Scotia Power Incorporated – Extra Large Industrial Active Demand Control Tariff – 2025 Annual Report On March 26, 2026, Nova Scotia Power Incorporated filed its Annual Report on the performance of the Extra Large Industrial A...

AI summary Nova Scotia Power Incorporated filed its 2025 Annual Report on the Extra Large Industrial Active Demand Control Tariff (ELIADC), which allows NS Power to adjust Port Hawkesbury Paper's load in response to system conditions. The tariff provides load shifting credits, with 25% going to Port Hawkesbury Paper and 75% to NS Power customers. The ADC benefit has been positive in only two years since the tariff's inception.

Board Findings In its decision in Matter M09420, the Board directed NS Power to file annual assessment results as required under the terms of the ELIADC tariff. Specifically, the approved tariff states: Annually, NS Power shall report to t...

AI summary The Board accepted NS Power's 2025 ELIADC Annual Report despite late submission, noting concerns over delays and lack of enhanced quantification of load shifting benefits. NS Power cited a cyber security breach as a reason for delays and was directed to provide a firm deadline for completing the analysis by September 15, 2026. The Board also requested improved reporting transparency.