N-1Evaluation Report
44 passages
Conclusion The Year Four Report ( Appendix A ) provides evaluated results for the 2024/25 Season, including sustained residential load shifting, statistically significant commercial load shifting, and initial results for the MURB TOU Tarif...
AI summary The Year Four Report evaluates the 2024/25 Season, highlighting residential and commercial load shifting results and initial MURB TOU Tariff outcomes. Econoler's review supports NS Power's methodology. The report includes survey data, marketing activities, and stakeholder session materials. NS Power plans to resume TVP Pilot rates for the 2026/27 Season, per the Board-approved framework.
Regulatory Counsel 11 The Year Five Report will only include evaluated results for the MURB TOU Tariff, as other TVP tariffs were temporarily suspended during the 2025/26 Season. Summary of Deliverable / Commitment Detail & Context Source...
AI summary The Year Five Report will focus on the MURB TOU Tariff, with other TVP tariffs suspended. Deliverables include evaluating the MURB TOU Tariff metrics, refining the tariff to reflect load shifting value, refining load reduction estimation methods, and exploring TVP revenue stability mechanisms.
Summary of Deliverable / Commitment Detail & Context Source 1 Initial Due by / Completed on Status Refer to Evaluate the level of costs that are truly driven by an individual's non-coincident demands Synapse recommends that NS Power evalua...
AI summary The document outlines several commitments and recommendations related to demand charges, time-varying pricing (TVP), and tariff structures. Key points include evaluating non-coincident demand costs, modeling demand charge changes for commercial customers, assessing TVP's alignment with avoided costs, and proposing a weekend-inclusive TOU tariff for stakeholder review.
Summary of Deliverable / Commitment Detail & Context Source 1 Initial Due by / Completed on Status Refer to sessions then file the EM&V metrics when NS Power is prepared to add the new tariff NS Power agreed with Synapse's recommendation t...
AI summary The document outlines several commitments and actions related to the Time-Varying Pricing (TVP) Pilot Program, including the development of a weekend-inclusive TOU tariff, review of system planning values, and discussions on seasonally adjusted default rates. NS Power is directed to provide draft tariffs and metrics for evaluation, and future technical sessions are planned to address various aspects of TVP.
Definitions The hourly net system requirement (MW) less all wind generation (MW) Cohorts are numbered based on the Phase they enrolled in the TVP program. For example, Cohort 4 refers to participants recruited in Phase 4 (i.e. the fourth W...
AI summary The text defines key terms and concepts used in the regulatory proceeding, including definitions related to energy consumption, rate classes, and income brackets. It explains terms such as 'hourly net system requirement,' 'Time-Varying Pricing (TVP) program,' and 'Standard Offer Rate.'
Tariffs Both TOU and CPP are available in the Domestic, Small General, and General rate classes, whereas MURB TOU is available to MURBs in the General rate class. A summary of the TVP Tariffs is provided in Attachment [I: Riders and Tariff...
AI summary The document outlines the structure and rates of Time-Varying Pricing (TVP) tariffs in Nova Scotia, including TOU and CPP, for different rate classes. It details peak and off-peak periods, pricing differences, and operational specifics such as event scheduling and notification requirements.
Absolute Load Reduction (kW) Relative Load Reduction (%) TVP Tariff Morning Peak Evening Peak Morning Peak Evening Peak Residential TOU 0.15 kW 0.17 kW 7.4% 7.9% Residential CPP 0.61 kW 0.77 kW 24.6% 28.5% Statistical Significance ✓ ✓ ✓ ✓...
AI summary The table summarizes peak load reductions by residential TVP tariff, showing reductions in both absolute kW and relative percentages for morning and evening peaks. The General SOR Energy Charge has two blocks with different rates for the first 200 kWh per month per kW of maximum demand and additional kWh.
Table 4: Impact Evaluation Metric Summary Category Metric TOU, CPP, MURB TOU (all rate classes unless specified) • Change in load (kW) during peak, and overall impact during Winter and non-Winter. Mid-peak hours included for MURB TOU. • Ch...
AI summary Table 4 outlines impact evaluation metrics for time-varying pricing (TVP) programs, including changes in load during peak periods, economic impacts on electricity bills, and price elasticity. Metrics are categorized by load and usage impact, and economic impact, with specific considerations for different rate classes and regions.
Table 5: TVP Participation on March 31 by Phase and Tariff Phase DOM TOU SMG TOU GEN TOU DOM CPP SMG CPP GEN CPP MURB TOU Total Phase 1 676 24 284 8 0 992 Phase 2 891 17 373 2 0 1,283 Phase 3 2,241 37 19 922 3 6 0 3,228 Phase 4 5,616 37 18...
AI summary Table 5 presents TVP participation by phase and tariff, showing the number of participants in different phases and tariff types. Table 6 provides retention rates for each TVP tariff, with MURB TOU having a 100% retention rate and Domestic TOU having an 87% retention rate.
The methodology is primarily composed of two components: control group selection and regression modelling. Control group selection includes matching treatment customers with control customers based on a similar location (i.e. neighbourhood...
AI summary The methodology for evaluating program effectiveness involves selecting a control group based on location, heating type, and participation in other programs, and using regression models like DiD and DDD to analyze load profiles and TVP price signals. Commercial TOU and CPP tariffs use a semi-DiD approach due to challenges in control group selection.
3.2.1 Change in Electricity Bills [Table 17](#page-61-2) summarizes the applicable tariffs used for residential TOU impact on billing. Tariff details can be found in [Attachment I: Riders and Tariff Structure.](#page-115-0) Customer Type a...
AI summary The document discusses the change in electricity bills due to the implementation of Time-of-Use (TOU) tariffs for residential customers. Table 17 outlines the applicable tariffs for different customer types and periods, highlighting the shift from the Domestic Standard Tariff to the Domestic TOU Tariff for the Treatment, Pilot group.
4.2.1 Change in Electricity Bills [Table 30](#page-77-3) summarizes the applicable tariffs used for residential CPP impact on billing. Tariff details can be found in [Attachment I: Riders and Tariff Structure.](#page-115-0)
AI summary This section discusses the impact of residential Critical Peak Pricing (CPP) on electricity bills, referencing Table 30 and Attachment I for tariff details.
5.2.1 Change in Electricity Bills The bill impact analysis for the commercial TOU uses the same method that was used for estimating the commercial TOU load impact analysis. In the bill impact analysis, applicable tariffs applied in accorda...
AI summary The bill impact analysis for the commercial time-of-use (TOU) tariff uses the same method as the load impact analysis. Applicable tariffs are determined based on customer type and pilot period, as detailed in Table 39 and Attachment I.
Customer Type Period Applicable Tariff Treatment – General Pre-Pilot General Tariff – Rate Code 11 Treatment – General Pilot General TOU Tariff – Rate Code 83 Treatment – Small General Pre-Pilot Small General Tariff – Rate Code 10 Treatmen...
AI summary The table outlines different customer types and applicable tariffs before and during the pilot period. It also notes that commercial TOU customers experienced a statistically significant increase in their daily electricity bills during the Winter and annually, consistent with increased electricity usage.
7 MURB TOU Tariff Impacts As this Phase represents the first year of the MURB TOU pilot program, participation was limited to 10 enrolled MURBs, with the pilot period beginning on November 1, 2024. The goal of the MURB TOU pilot is to info...
AI summary The MURB TOU pilot program, in its first year, involves 10 enrolled MURBs starting November 1, 2024. The goal is to determine if removing the demand charge for certain customer segments on the General Rate can increase load shifting potential compared to the commercial TOU pilot. This section discusses the estimated impacts of the commercial TOU pilot on load and economics.
Parameters Avg. Load Reduction (kW)a Relative Avg. Load Reduction (%)a Significance (p_Value≤0.05) Morning Snapbackb 1.20 ± 0.48 5.0% ✓ Evening Snapbackc 0.53 ± 0.54 2.3% X Overall Snapback 0.92 ± 0.36 3.9% ✓ Table 51: Snapback Effect for...
AI summary Table 51 presents the snapback effect for MURB TOU participants during winter, showing average load reductions and their significance. Morning snapback had a 5.0% reduction, while evening snapback had 2.3%, with overall snapback at 3.9%. The significance of morning and overall snapback is marked as significant (p_Value≤0.05).
7.2.1 Change in Electricity Bills For the assessment of the economic impacts of the MURB TOU program, the same DiD approach used to estimate load and demand impacts was applied to evaluate changes in electricity bills for MURB TOU particip...
AI summary The economic impact of the MURB TOU program was assessed using a DiD approach, applying 2025 tariffs to evaluate changes in electricity bills for participants based on customer type and pilot period.
Customer Type Period Applicable Tariff Control Pre-Pilot General Tariff Control Pilot General Tariff Treatment Pre-Pilot General Tariff Treatment Pilot MURB TOU Table 56: Tariffs Used for Evaluating the Impact of MURB TOU on Electricity Bi...
AI summary The document presents a comparison of electricity bills for MURB TOU participants before and during the pilot period, showing an average daily bill saving of approximately $12, though not statistically significant. The MURB TOU rate was designed to save during non-Winter seasons.
Attachment I: Riders and Tariff Structure A summary of the TVP rate designs is included. For additional details, review the publicly available Tariff book.[13](#page-115-5) The volumetric rates used within the billing models are summarized...
AI summary Attachment I provides a summary of Time-Varying Pricing (TVP) rate designs and references the publicly available Tariff book for additional details. It also includes volumetric rates used in billing models and visual aids to explain TVP tariff structures.
Tariffs Although tariffs can change throughout a pilot Phase, to control for economic impacts associated with tariff change, a consistent tariff is used for all economic analyses.
AI summary The document notes that while tariffs may vary during a pilot phase, a consistent tariff is applied across all economic analyses to mitigate economic impacts associated with tariff changes.
Table 59: Tariff Summary (January 2025) Domestic SOR Customer Charge $19.17 per month Energy Charge $0.16931 per kWh Domestic TOU Customer Charge $19.17 per month Energy Charge (Winter on-peak) $0.33862 per kWh Energy Charge (Winter off-pe...
AI summary The document presents a detailed summary of various tariff structures effective January 2025, including Domestic SOR, Domestic TOU, Domestic CPP, Small General SOR, Small General TOU, General SOR, General TOU, General CPP, and MURB TOU. Each tariff includes customer charges, energy charges for different time periods, and demand charges.
Phase 1: 2021/2022 (Cohort 1) Rate Class Tariff (Tariff #) August September October November December January February March General Demand CPP (Rate 73) 5 5 5 5 5 5 5 6 5 5 5 5 TOTAL CPP 286 284 278 276 276 271 270 390 390 386 385 384 Tot...
AI summary The text provides a detailed table showing the number of customers on different tariff plans across various months for the Phase 1 (2021/2022) cohort. It includes data for General Demand, Domestic, and Small General rate classes under Time-Varying Pricing (TVP) and Capacity-Based Pricing (CPP) tariffs.
Agenda - 1. Welcome & Introduction - 2. TVP Tariff Development Cycle - 3. Review of Year Three Evaluation Report Results Econoler - 4. Review of Draft List of Proposed MURB TOU Tariff Evaluation Metrics - 5. Draft 2024/25 Areas of Focus Wo...
AI summary The agenda outlines key discussion points for a regulatory proceeding, including the development of a Time-Varying Pricing (TVP) tariff, review of evaluation reports, proposed tariff metrics, and planning for future work areas.
TVP Tariff Development Cycle • As provided in the 2024 TVP Consensus Agreement – the Company will continue to manage and refine its TVP Program in a structured, analytics-based, and stakeholder engaged manner focusing on an annual TVP deve...
AI summary The 2024 TVP Consensus Agreement outlines a structured approach for managing and refining the TVP Program, emphasizing an annual development, approval, and implementation cycle with stakeholder engagement and analytics-based decision-making.
Draft List of Proposed MURB TOU Tariff Evaluation Metrics • In its Decision on the 2024/25 Application, the Board directed NS Power: - Slides 32 and 33 provide an overview of NS Power's evaluation metrics approach and proposed MURB TOU Pil...
AI summary The Board directed NS Power to provide an overview of its evaluation metrics approach and proposed MURB TOU Pilot Tariff metrics. NS Power is seeking stakeholder input and will file its list of proposed metrics by December 31, 2024.
Proposed MURB Pilot Tariff Evaluation Metrics Category Measurement Metric Definition Change in load during peak periods (kW) The average load reduction determined by the regression for winter morning peak, winter evening peak, winter mid-p...
AI summary The document outlines proposed evaluation metrics for a MURB pilot tariff, focusing on load impact, billing impact, and elasticity measures. It includes metrics such as load reduction during peak periods, average electricity savings, bill savings, demand charge comparisons, and elasticity measurements to assess the effectiveness of the tariff.
- NS Power will distribute a revised proposed 2024/25 Areas of Focus Work Plan in January, following stakeholder input, which will include anticipated Technical Sessions and Timelines Session & Timeline Summary of 2024/25 Areas of Focus &...
AI summary NS Power plans to distribute a revised 2024/25 Areas of Focus Work Plan in January after stakeholder input. The plan includes technical sessions and timelines, such as the annual TVP development cycle and the filing of MURB TOU Pilot Tariff evaluation metrics by December 31, 2024.
Draft 2024/25 Areas of Focus Work Plan (3/5) Session & Timeline Summary of 2024/25 Areas of Focus & Board Directives Type Items to be Discussed/Reviewed (revised work plan will be distributed • (2.3) examination of alternative Domestic tar...
AI summary The draft 2024/25 Areas of Focus Work Plan outlines the examination of alternative Domestic tariffs, including a TOU structure with weekend peak/off-peak periods, and the development of a draft weekend-inclusive TOU tariff for stakeholder review. It also explores use cases for behind-the-meter energy storage in the context of TVP pricing ratios and net metering.
Draft 2024/25 Areas of Focus Work Plan (5/5) Session & Timeline Summary of 2024/25 Areas of Focus & Board Directives Type Items to be Discussed/Reviewed TBD following stakeholder 6.0 – Review of System Planning Related Values • (6.1) revie...
AI summary The 2024/25 Areas of Focus Work Plan includes a review of system planning related values, such as avoided costs and Effective Load Carrying Capability (ELCC), as they apply to Time-Varying Pricing (TVP). The plan also involves assessing the alignment of TVP pricing with avoided costs and analyzing the correspondence between system margin forecasts and CPP events.
Near Term Next Steps - Fri, 22 Nov NS Power circulated slides - Today (Wed, 27 Nov) Kick-off TVP Development Cycle (2024/25) Session - Thu, 12 Dec stakeholders provide comments on draft 2024/25 Areas of Focus Work Plan and the proposed lis...
AI summary The document outlines near-term next steps in the development of Time-Varying Pricing (TVP) for the 2024/25 cycle, including stakeholder engagement, submission of evaluation metrics, and planning for technical sessions.
Other Board Directives for 2024/25 As part of the Board's Decision in M11822 (2024/25 TVP Application), NS Power will also: • Report on the Year Four findings and file the annual EM&V Report no later than 31 Jul 2025 As part of the Board's...
AI summary As part of the Board's decisions in M11822 and M11823, NS Power is required to report on the Year Four findings, analyze system margin forecasts and CPP events, review marketing and communication efforts, and assess the performance of General Service Class customers, potentially leading to tariff changes.
Consumer Advocate (CA) 2024/25 Areas of Focus Work Plan – Potential Tariff Changes • With regard to potential tariff changes discussed in the draft work plan, the Consumer Advocate wonders whether NSP considered combining and cross marketi...
AI summary The Consumer Advocate inquires whether NSP has considered combining the Efficiency Nova Scotia Eco Shift Demand Response program with TOU/CPP rate offerings and whether similar Demand Response options, like those offered by BC Hydro, should be considered. NS Power and EfficiencyOne are expanding the Eco Shift program to TOU and CPP participants and will monitor the overlap before deciding on future cross-program enrolment.
Moving forward - NS Power remains open to additional segmenting of income in future reports with these limitations in mind if there are additional questions it can answer that may help improve the effectiveness of the TVP program. - The na...
AI summary NS Power is open to further segmenting income data in future reports if it can help improve the TVP program, but believes the current methodology has adequately addressed the questions asked.
- Although these changes are not fully aligned with existing TVP program winter peak periods they remain a useful tool in calculating avoided costs. Season definitions used in Updated season definitions June 12, 2024 analysis Winter On-Pea...
AI summary The text discusses updates to season definitions used in the Tariff Variation Process (TVP) program, including changes to winter on-peak and off-peak periods, as well as non-winter periods. These changes are not fully aligned with existing TVP program winter peak periods but are noted as a useful tool in calculating avoided costs.
Potential Tools to Monitor Revenue Impacts - During the 2023/24 (Year 3) stakeholder engagements, NS Power provided a draft rate design scorecard that was reviewed with stakeholders and modified to reflect feedback and learnings captured t...
AI summary NS Power developed a rate design scorecard during 2023/24 stakeholder engagements to evaluate tariff options based on metrics like customer orientation, revenue neutrality, and accessibility. The company also set enrolment targets for TVP rates to manage demand response and analyze revenue impacts from TVP participants compared to those on standard tariffs.
RESULTS: - Developed dashboards to monitor TVP recruitment, in realtime, which included metrics on applications, volume of TVP related inquires, and marketing efforts. - Cross-functional teams were able to leverage this data to stay agile,...
AI summary The results section discusses the development of dashboards to monitor the Tariff Variation Process (TVP) recruitment in real-time, including metrics on applications, inquiries, and marketing efforts. Cross-functional teams used this data to make agile, daily decisions on recruitment efforts.
We will: - Continue to encourage sign ups for the TVP mailing list on our rate pilot landing pages through customer conversations and public events. There are currently over 650 Customers signed up. - Roll out ongoing customer engagement p...
AI summary The organization plans to continue promoting the Tariff Variation Process (TVP) through customer engagement, improve the application process, and use exit survey results to inform future planning. Over 650 customers are currently signed up for the TVP mailing list.
3.0 – Demand Charges (3.1) evaluate the extent to which the demand charge may act as a barrier to General class TOU participation and continue to evaluate non-demand TVP designs for General Service customers (3.2) assessment of demand char...
AI summary The text outlines a technical session discussing demand charges and their potential impact on General Service customers' participation in time-varying pricing (TVP) programs. It recommends evaluating demand charge structures, assessing their effects on customer bills, and considering modifications to encourage load shifting and participation.
Technical Session 2 (continued) – anticipated late-March/early-April Summary of 2024/25 Areas of Focus & Board Directives Туре Items to be Discussed/Reviewed 4.0 – Reporting on Small Business Customer Items (4.1) report to stakeholders on...
AI summary The 2024/25 focus areas include reporting on small business customer items, specifically analyzing load characteristics, customer recruitment, classification by business sector, and addressing customer reluctance to participate in the Tariff Variation Process (TVP).
3.0 – Demand Charges (3.1) evaluate the extent to which the demand charge may act as a barrier to General class TOU participation and continue to evaluate non-demand TVP designs for General Service customers (3.2) assessment of demand char...
AI summary The document outlines the evaluation of demand charges for General Service customers, including their impact on participation in time-varying pricing (TVP) and the potential for increasing electricity bills. It also discusses the need to recover only specific demand-related costs through non-coincident demand charges and the assessment of bill changes due to load shifting.
Technical Session 3 – anticipated week of 12 May (tbc) Summary of 2024/25 Areas of Focus & Board Directives Туре Items to be Discussed/Reviewed 6.0 – Review of System Planning Related Values • (6.1) review of system planning related values...
AI summary This section outlines the focus areas for Technical Session 3, including the review of system planning related values for Time-Varying Pricing (TVP), assessment of TVP's alignment with avoided costs, and analysis of system margin forecasts and Critical Peak Pricing (CPP) events in the Year 4 report.
Stakeholder Comment NS Power Response Board Counsel Consultant, Synapse Energy Economics (Synapse, BCC) 2. Review of Current Tariffs Revenue Neutra
AI summary The document includes a table with stakeholder comments and responses related to the review of current tariffs and revenue neutrality. It involves Board Counsel, Synapse Energy Economics, and NS Power.
roposes that the Fair Value metric be modified to include marginal generation, transmission, and distribution capacity costs. That is, rather than "Tariff volumetric rates correlate to the marginal cost of electricity (i.e., largely fuel)"...
AI summary Nova Scotia Power proposes modifying the Fair Value metric to include marginal generation, transmission, and distribution capacity costs. They also recommend retaining the 50/50 structural winners and losers metric in the scorecard while acknowledging its shortcomings. They suggest that TVP rates should be designed to influence load shape and consider cost reflectiveness based on stakeholder interest.
Stakeholder Comment NS Power Response Slide 28: Verticals in Commercial Segmentation Model 1. Please refer to Attachment 1. 1. In addition to NSP's offer, during Technical Session #2, to provide the number of customers and load distributio...
AI summary The SBA requests NSP to provide typical load profiles for each customer segment in the Commercial Segmentation Model to assess which segments can benefit from Time Varying Pricing (TVP), in addition to the number of customers and load distributions. NSP responds that potentially all segments could fall under the target of larger customers with a portfolio of accounts.
N-1-(i)TVP Year 4 Report Appendix A (Redline) - Refiled
20 passages
Definitions Adjusted Net Load The hourly net system requirement (MW) less all wind generation (MW) Table 25: Snapback Effect for Residential CPP Participants 44 Table 26: Change in Load (kW) during Highest Winter ANL Hours for Residential...
AI summary The text defines key terms and presents tables analyzing the impact of Critical Peak Pricing (CPP) and Time-of-Use (TOU) programs on residential and commercial electricity usage, including load changes, snapback effects, and tariff impacts.
Nova Scotia Power (NS Power, Company) launched the Time-Varying Pricing (TVP) Tariff Pilot on November 1, 2021, with the purpose of encouraging customers to shift load from Winter peak periods to Winter off-peak periods. These tariffs pres...
AI summary Nova Scotia Power's Time-Varying Pricing (TVP) Tariff Pilot, launched in 2021, encourages load shifting to reduce peak energy demand and system costs. The fourth annual report highlights continued customer enrollment growth, load reduction effects, and improved evaluation methods. The pilot demonstrates significant on-peak load reductions, particularly during high system load periods, and provides insights for future demand response strategies.
Tariffs Both TOU and CPP are available in the Domestic, Small General, and General rate classes, whereas MURB TOU is available to MURBs in the General rate class. A summary of the TVP Tariffs is provided in Attachment [I: Riders and Tariff...
AI summary The document outlines the structure and rates of Time-Varying Pricing (TVP) tariffs, including TOU and CPP, across different rate classes. It specifies peak and off-peak periods, pricing differences relative to the Standard Offer Rate (SOR), and details for MURB TOU and CPP events.
Table 4: Impact Evaluation Metric Summary Category Metric TOU, CPP, MURB TOU (all rate classes unless specified) • Change in load (kW) during peak, and overall impact during Winter and non-Winter. Mid-peak hours included for MURB TOU. • Ch...
AI summary Table 4 outlines impact evaluation metrics for load and usage changes under various rate structures, including TOU, CPP, and MURB TOU. It details changes in load during peak periods, snapback effects, average usage levels, and economic impacts such as changes in electricity bills and price elasticity.
2.3 MURB TOU For MURB TOU, the control group selection model was successful (Match Accuracy ≥ 90%) in selecting a 1:1 control for the ten MURB TOU treatment customers, refer to load profiles below in [Figure 11.](#page-30-2) Figure 11: MUR...
AI summary The MURB TOU control group selection model achieved a match accuracy of ≥90%, successfully selecting a 1:1 control for ten treatment customers. Load profiles in Figure 11 show a good match, supporting the use of a control group for this subset of commercial customers.
[Table 17](#page-46-2) summarizes the applicable tariffs used for residential TOU impact on billing. Tariff details can be found in [Attachment I: Riders and Tariff Structure.](#page-100-0) Customer Type and Period Applicable Tariff Contro...
AI summary Table 17 outlines the residential TOU tariffs used in the analysis, while Table 18 shows that residential TOU participants achieved average annual bill savings of $0.30 per day, with significant savings during non-Winter periods. However, during Winter, participants experienced an overall bill increase of $1.34 per day due to higher TOU rates during peak hours.
Table 30: Tariffs Used for Analyzing Residential CPP Impact on Electricity Bill Customer Type and Period Applicable Tariff Control, Reference Day Domestic Standard Tariff Control, during Pilot Domestic Standard Tariff Treatment, Reference...
AI summary Table 30 and Table 31 analyze the impact of the Conservation Program Participants (CPP) on residential electricity bills. The results show that CPP participants experienced average daily bill savings of $0.57 annually, with significant savings during non-Winter days and weekends/holidays in Winter. These savings are attributed to lower rates under the CPP Tariff compared to standard domestic tariffs.
5 Commercial TOU Tariff Impacts This section presents and discusses the estimated load and economic impacts of the commercial TOU program. The goal of the commercial TOU pilot is to encourage customers to shift their electricity usage from...
AI summary This section discusses the estimated load and economic impacts of the commercial Time-Varying Pricing (TOU) program. The goal is to encourage customers to shift electricity usage from peak to off-peak periods, reducing fuel and power costs and infrastructure expenses. Phase 4 has 50 participants, with most enrolled in earlier cohorts.
5.2.1 Change in Electricity Bills The bill impact analysis for the commercial TOU uses the same method that was used for estimating the commercial TOU load impact analysis. In the bill impact analysis, applicable tariffs applied in accorda...
AI summary The bill impact analysis for the commercial TOU uses the same method as the commercial TOU load impact analysis. Applicable tariffs are applied based on customer type and pilot period, as detailed in Table 39 and Attachment I: Riders and Tariff Structure.
Table 39: Tariffs Used for Evaluating the Impact of Commercial TOU on Electricity Bill Customer Type Period Applicable Tariff Treatment – General Pre-Pilot General Tariff – Rate Code 11 Treatment – General Pilot General TOU Tariff – Rate C...
AI summary Table 39 outlines the tariffs used for evaluating the impact of commercial Time-of-Use (TOU) pricing on electricity bills, comparing pre-pilot and pilot periods. Table 40 indicates that commercial TOU participants experienced statistically significant average daily bill increases of approximately 12.311.9 \/day in Winter and 3.81.1 \/day annually, consistent with increased electricity usage.
6.2.1 Change in Electricity Bills The bill impact analysis for the commercial CPP uses the same method that was used for estimating the commercial CPP load impact analysis. In the bill impact analysis, applicable tariffs were applied in ac...
AI summary The bill impact analysis for the commercial Conservation Program Participants (CPP) uses the same method as the load impact analysis. Applicable tariffs were applied based on customer type and pilot period, with details provided in an attachment.
7.1.2 Snapback Effect The snapback effect refers to premises that usinge more electricity than the baseline during the hours immediately following peak periods, compared to the pre-pilot period. This effect is evaluated based on the same D...
AI summary The snapback effect refers to increased electricity usage following peak periods, evaluated using a DiD approach. MURB TOU participants showed average load reductions during morning and evening snapback periods, with only the morning reduction being statistically significant.
7.1.4 Change in Usage Changes in daily electricity usage were estimated by applying the same DiD approach that was used for estimating hourly load impact[. Table 53](#page-92-3) presents the estimated changes in daily electricity usage (kW...
AI summary The document discusses changes in daily electricity usage estimated using a DiD approach for MURB TOU participants, with results presented in Table 53.
7.2 Economic Impacts This section presents and discusses the impact of MURB TOU Tariff on the electricity bill as well as price elasticity.
AI summary This section discusses the economic impacts of the MURB TOU Tariff, focusing on its influence on electricity bills and price elasticity.
7.2.1 Change in Electricity Bills For the assessment of the economic impacts of the MURB TOU program, the same DiD approach used to estimate load and demand impacts was applied to evaluate changes in electricity bills for MURB TOU particip...
AI summary The economic impacts of the MURB TOU program were assessed using a DiD approach, applying applicable tariffs from 202511F to evaluate changes in electricity bills for participants during the pilot period.
84 12 Nova Scotia Power – Tariffs: January 2025 Table 56: Tariffs Used for Evaluating the Impact of MURB TOU on Electricity Bill Customer Type Period Applicable Tariff Control Pre-Pilot General Tariff Control Pilot General Tariff Treatment...
AI summary The document discusses the impact of MURB TOU on electricity bills, noting an average daily bill saving increase of approximately $124.5, though it is not statistically significant. The MURB TOU rate was designed to save during non-Winter seasons.
Attachment I: Riders and Tariff Structure A summary of the TVP rate designs is included. For additional details, review the publicly available Tariff book.12F [13](#page-100-5) The volumetric rates used within the billing models are summar...
AI summary This attachment outlines the TVP rate designs and includes a summary of volumetric rates used in billing models, along with visual aids to explain the TVP tariff structures. Further details can be found in the publicly available Tariff book.
Tariffs Although tariffs can change throughout a pilot Phase, to control for economic impacts associated with tariff change, a consistent tariff is used for all economic analyses.
AI summary The document discusses the use of consistent tariffs during pilot phases to control for economic impacts associated with tariff changes, ensuring uniformity in economic analyses.
Table 59: Tariff Summary (January 2025) Domestic SOR Customer Charge $19.17 per month Energy Charge $0.16931 per kWh Domestic TOU Customer Charge $19.17 per month Energy Charge (Winter on-peak) $0.33862 per kWh Energy Charge (Winter off-pe...
AI summary The document provides a detailed summary of various tariff structures effective January 2025, including Domestic SOR, Domestic TOU, Domestic CPP, Small General SOR, Small General TOU, General SOR, General TOU, General CPP, and MURB TOU. Each tariff includes customer charges, energy charges for different periods, and demand charges where applicable.
MURB TOU Customers Unlike the commercial TOU and CPP rates, MURB TOU has not yet been evaluated using the fixed effects regression model. As such additional analyses are provided within in order to validate the choice of a mixed effects re...
AI summary The document discusses the evaluation of MURB TOU customers using a mixed effects regression model with a control group, as the fixed effects regression model has not yet been applied to this specific tariff.
N-2TVP Year 4 Report Appendix A (Clean) - Refiled
18 passages
Definitions Adjusted Net Load The hourly net system requirement (MW) less all wind generation (MW) Winter / Winter: November through March, inclusive Non-Winter Non-Winter: April through October, inclusive. Historically referred to "Summer...
AI summary This section defines key terms and abbreviations used in the regulatory proceeding, including Adjusted Net Load, Winter and Non-Winter periods, and various abbreviations related to energy programs and methodologies. It outlines the structure of the document, including sections such as Executive Summary, Tariffs, and Evaluation Scope.
Tariffs Both TOU and CPP are available in the Domestic, Small General, and General rate classes, whereas MURB TOU is available to MURBs in the General rate class. A summary of the TVP Tariffs is provided in Attachment [I: Riders and Tariff...
AI summary The document outlines the structure of Time-Varying Pricing (TVP) tariffs, including TOU and CPP, detailing peak and off-peak periods, rates, and differences between rate classes such as Domestic, Small General, General, and MURB. It also explains the frequency and timing of CPP events and their associated pricing.
3.2.1 Change in Electricity Bills [Table 17](#page-46-2) summarizes the applicable tariffs used for residential TOU impact on billing. Tariff details can be found in [Attachment I: Riders and Tariff Structure.](#page-100-0) Customer Type a...
AI summary This section discusses the change in electricity bills, focusing on the impact of residential Time-of-Use (TOU) tariffs. Table 17 outlines the applicable tariffs for different customer types and periods, showing that the Domestic Standard Tariff was used for control groups, while the Domestic TOU Tariff was applied to treatment groups during the pilot period.
4.1 Load & Usage Impacts This section presents and discusses the electrical load impact from the Domestic CPP Tariff.
AI summary This section presents and discusses the electrical load impact from the Domestic CPP Tariff, focusing on how it affects overall usage and load patterns.
4.2.1 Change in Electricity Bills [Table 30](#page-62-3) summarizes the applicable tariffs used for residential CPP impact on billing. Tariff details can be found in [Attachment I: Riders and Tariff Structure.](#page-100-0)
AI summary This section discusses the change in electricity bills, referencing Table 30 and Attachment I for details on applicable tariffs and rider structures affecting residential customers.
5.2.1 Change in Electricity Bills The bill impact analysis for the commercial TOU uses the same method that was used for estimating the commercial TOU load impact analysis. In the bill impact analysis, applicable tariffs applied in accorda...
AI summary The document discusses the method used for analyzing the impact of commercial time-of-use (TOU) tariffs on electricity bills, referencing Table 39 and an attachment for detailed tariff information.
Customer Type Period Applicable Tariff Treatment – General Pre-Pilot General Tariff – Rate Code 11 Treatment – General Pilot General TOU Tariff – Rate Code 83 Treatment – Small General Pre-Pilot Small General Tariff – Rate Code 10 Treatmen...
AI summary The document outlines the changes in daily electricity bills for commercial TOU participants during the Winter season and annually in Phase 4, showing an average increase of 11.9 \/day and 1.1 \/day, respectively, consistent with increased electricity usage.
6.2.1 Change in Electricity Bills The bill impact analysis for the commercial CPP uses the same method that was used for estimating the commercial CPP load impact analysis. In the bill impact analysis, applicable tariffs were applied in ac...
AI summary The bill impact analysis for the commercial Controlled Load Program (CPP) shows an average daily bill increase of $11, or 4.7%, for participants during the Winter season in Phase 4, though this increase is not statistically significant. The analysis used specific tariffs for different customer types and periods.
Attachment I: Riders and Tariff Structure A summary of the TVP rate designs is included. For additional details, review the publicly available Tariff book.[13](#page-100-5) The volumetric rates used within the billing models are summarized...
AI summary Attachment I provides a summary of TVP rate designs and includes volumetric rates used in billing models, along with visual aids to explain each TVP Tariff structure. Additional details can be found in the publicly available Tariff book.
Riders Although riders can change throughout a pilot Phase, to control for economic impacts associated with tariff change, a consistent tariff is used for all economic analyses. Riders are applied to all volumetric energy charges on a per...
AI summary The document discusses the use of riders in tariff structures, emphasizing the application of consistent tariffs during pilot phases to manage economic impacts. It provides a summary of rider rates for different residential and commercial rate classes, including FAM, DSM, and SCR.
Tariffs Although tariffs can change throughout a pilot Phase, to control for economic impacts associated with tariff change, a consistent tariff is used for all economic analyses.
AI summary The document states that while tariffs may vary during a pilot phase, a consistent tariff is used in all economic analyses to mitigate economic impacts from tariff changes.
Table 59: Tariff Summary (January 2025) Domestic SOR Customer Charge $19.17 per month Energy Charge $0.16931 per kWh Domestic TOU Customer Charge $19.17 per month Energy Charge (Winter on-peak) $0.33862 per kWh Energy Charge (Winter off-pe...
AI summary Table 59 outlines various tariff structures for different customer categories in January 2025, including Domestic SOR, Domestic TOU, Domestic CPP, Small General SOR, Small General TOU, Small General CPP, General SOR, and General TOU. It details customer charges, energy charges for different periods (winter on-peak, winter off-peak, non-winter), and demand charges where applicable.
The methodology for control group selection, tariff impact, and the sub-models that support these evaluations are contained within this section. To be comprehensive, all regression models are included in this section; however, when variabl...
AI summary This section outlines the methodology for selecting a control group, assessing tariff impact, and the sub-models used in evaluations. It includes all regression models, with consistent variables defined only once.
III.2.3 Eco Shift A new addition to the TVP evaluation included the effect of combining the Eco Shift administered by E1 with TVP. Control group selection for these customers was incorporated into this evaluations methodology to ensure tha...
AI summary The Eco Shift program, administered by E1, was combined with TVP in an evaluation. Control group selection was used to ensure similarity between treatment and control groups. NS Power requested a list of Eco Shift events from E1, which were mostly CPP events due to alignment between E1 and NS Power.
Demand Response Overlap between NS Power and E1 In its Decision on E1's 2026 DSM Extension Application (M12249), the Board provided: The Board agrees that concerns about E1's demand response programs are better addressed in its consultatio...
AI summary The Board's decision on E1's 2026 DSM Extension Application highlights concerns about potential overlap between E1's demand response programs and NS Power's Critical Peak Pricing Program. It emphasizes the need for E1 to address these issues in its upcoming DSM Plan application and expects NS Power to cooperate in exploring these matters.
Coincidence of Critical Peak Events and System Margin In its Decision and Order on the Year Three (2023/24) Evaluation Report (Year Three Report) in M11823, the Board provided: NS Power agreed with Synapse that system margin forecasts may...
AI summary The Board directed NS Power to analyze the relationship between system margin forecasts and Critical Peak Pricing (CPP) events in the Year 4 report, and to refine methods for estimating load reductions from Time-Varying Pricing (TVP) tariffs. Analysis showed that during CPP events, system margin was significantly lower compared to non-CPP event hours.
pan> 35 M11823 – Board Decision and Order, 316514, page 5. Figure 58: Estimated Business Vertical Classification by TVP Tariff Note that individual business vertical sample sizes are too small to provide statistically relevant load reducti...
AI summary The document discusses NS Power's ongoing efforts to classify commercial customers under the Time-Varying Pricing (TVP) tariff. It notes that current sample sizes for business verticals are too small for statistically relevant load reduction estimates and that the classification algorithm is still under development. The General rate class is highlighted as the best focus area for commercial customers until more data is available.
Review of Marketing and Communication Efforts In its Decision and Order on the Year Three Report (M11823), the Board provided: Narrative Research conducted a customer survey, which highlighted residential customers' dissatisfaction regardi...
AI summary The Board's Decision and Order on the Year Three Report (M11823) highlights the need for NS Power to improve communication with customers regarding bill savings and TVP. NS Power has implemented tools to help customers understand TVP impacts and engaged stakeholders in marketing efforts. The Year 4 Report will include updates on these initiatives.
N-3Time-Varying Pricing (TVP) Pilot Year Five (2025/26) Evaluation Report (Appendix A)
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Background The TVP Pilot Program was developed by NS Power with the assistance of Brattle Group and stakeholder input in M09777. The Pilot, testing Time-of-Use (TOU) and Critical Peak Pricing (CPP) tariffs across the Domestic, Small Genera...
AI summary The TVP Pilot Program, including TOU and CPP tariffs, was approved by the Board in M09777 and M11822. The MURB TOU Tariff remained active during the 2025/26 season despite the suspension of other tariffs due to a cybersecurity incident affecting AMI data. The evaluation focuses on the MURB TOU Tariff.
Summary of Year Five Evaluation Results The Year Five Report represents the second evaluation of the MURB TOU Tariff since its implementation in November 2024. In the 2025/26 Season, all ten enrolled MURB customers continued participation...
AI summary The Year Five Evaluation of the MURB TOU Tariff indicates modest load increases during peak periods, with no significant bill savings observed during the evaluated Winter period. The evaluation was limited by data availability due to a cybersecurity incident, and findings are based on a small participant population. The results are consistent with the tariff's design to encourage bill savings outside of Winter peak conditions.
Definitions Adjusted Net Load The hourly net system requirement (MW) less all wind generation (MW) Table 2: Comparison of Phase 4 and Phase 5 MURB TOU Results during February and March 3 Table 3: Impact Evaluation Metric Summary 6 Table 4:...
AI summary The text presents a series of tables and figures related to the evaluation of Time-Varying Pricing (TVP) programs, specifically focusing on the impact of Multi-Unit Residential Building (MURB) Time-of-Use (TOU) rates on electricity load, demand, and billing. The tables provide data on load changes, participation rates, and tariff summaries.
Nova Scotia Power (NS Power, Company) launched the Time-Varying Pricing (TVP) Tariff Pilot on November 1, 2021, with the purpose of encouraging customers to shift load from Winter peak periods to Winter off-peak periods. These tariffs pres...
AI summary Nova Scotia Power launched a Time-Varying Pricing (TVP) Tariff Pilot in 2021 to shift customer load from winter peak to off-peak periods. The fifth annual report covers April 1, 2025, to March 31, 2026. A cybersecurity incident affected data collection, and temporary modifications were applied to TVP Tariffs due to operational constraints. AMR meters were installed for MURB TOU participants, but data collection for the control group was incomplete, affecting evaluation results.
Tariffs The MURB TOU Tariff has two four-hour peak periods (7 – 11 AM, 5 – 9 PM) with a mid-peak (11 AM – 5 PM) occurring seven days per week during the Winter period (i.e. November 1 to March 31, inclusive). During the non-Winter period (...
AI summary The MURB TOU Tariff defines peak, mid-peak, and off-peak periods during Winter and non-Winter months, with varying rates relative to the SOR first energy block. It applies the same rate structure on holidays and weekends, and does not include a demand charge, unlike the General SOR.
Note: Throughout this report, statistically significant results will be displayed in tables with black font, whereas statistically insignificant results will be displayed in grey font. MURB TOU participants demonstrated statistically signi...
AI summary The analysis of MURB TOU participants shows statistically significant increases in electricity use during snapback periods and during high Adjusted Net Load hours. However, the overall increase in energy use during Winter did not lead to a statistically significant increase in bills. The study also notes limitations due to incomplete data coverage and small sample size, affecting the conclusiveness of findings.
2.2.1 Change in Electricity Bills For the assessment of the economic impacts of the MURB TOU program, the same DiD approach used to estimate load and demand impacts was applied to evaluate changes in electricity bills for MURB TOU particip...
AI summary The economic impact of the MURB TOU program on electricity bills was assessed using a DiD approach, applying 2026 tariffs based on customer type and pilot period as outlined in Table 11.
Customer Type Period Applicable Tariff Control Pre-Pilot General Tariff Control Pilot General Tariff Treatment Pre-Pilot General Tariff Treatment Pilot MURB TOU Tariff [Table 12](#page-28-2) presents the estimated overall bill impacts and...
AI summary Table 12 shows that MURB TOU participants experienced an average daily bill increase of approximately $16.7 during the Winter 2025/26 evaluation period, though it is statistically insignificant. The data includes average bill savings by month and relative bill savings percentages.
Findings Summary Although six of the seven TVP pilot tariffs were not evaluated in this report due to a temporary pause in those tariffs for the 2025/26 Season, the MURB TOU Tariff was evaluated for the second time. Due to data limitations...
AI summary The evaluation of the MURB TOU Tariff during Phase 5 showed modest load increases during peak and snapback periods, but no significant load shifting in response to price signals. Bill increases were statistically insignificant, and demand trends were inconsistent. The findings are limited by a small sample size and data constraints, leading to inconclusive results.
Attachment I: Riders and Tariff Structure A summary of the TVP rate designs is included. Additional details, such as tariff terms and conditions, are available in NS Power's Tariff Book. [2](#page-31-5) The volumetric rates used within the...
AI summary Attachment I provides a summary of TVP rate designs and references additional details in NS Power's Tariff Book. It includes volumetric rates and visual aids to explain the TVP tariff structures.
Data & Reporting - Planning for Data Lake Reporting is still ongoing with and estimated completion date of October 30, 2026: - Potential changes in analytics tools - This may impact Phase 6 EM&V - The Phase 4 (2024/25) Evaluation Report wi...
AI summary Planning for Data Lake Reporting is ongoing with an estimated completion date of October 30, 2026. Potential changes in analytics tools may impact Phase 6 EM&V. The Phase 4 (2024/25) Evaluation Report will be filed by June 30, 2026, and the Phase 5 (2025/26) Evaluation report by July 31, 2026, which evaluates the MURB TOU Tariff for winter phase 5.
Items to be Discussed at Future Technical Sessions and/or provided in the Year Four (2024/25) Evaluation Report Summary of 2024/25 Areas of Focus & Board Directives – Updated for 2026/27 Type Items to be Discussed/Reviewed 5.0 – Potential...
AI summary The document outlines areas of focus for 2024/25, including potential tariff changes to improve customer participation in the TVP program, discussions on new tariffs enabling behind-the-meter energy storage, and examination of alternative domestic tariffs with TOU structures. It also mentions the development of a weekend-inclusive TOU tariff and evaluation of energy storage use cases.
TIME-VARYING PRICING TARIFF PROGRAM NS POWER RESPONSES TO STAKEHOLDER COMMENTS TVP Session 2026/27 Kick-off Session – held 16 June 2026 Comments Received 26 June 2026
AI summary Nova Scotia Power Inc. (NSPOWER) is responding to stakeholder comments on the Time-Varying Pricing (TVP) Tariff Program, following a kick-off session held on 16 June 2026 and comments received on 26 June 2026.
- 2. Multi unit residential building (MURB TOU) Tariff EM&V. MURB TOU scope includes existing commercial TOU scope and additional scope specific to MURB TOU. Table 4: Impact Evaluation Metric Summary Category Metric TOU, CPP, MURB TOU (all...
AI summary The document discusses the evaluation metrics for the Multi Unit Residential Building (MURB) Time-Varying Pricing (TVP) Tariff, including load changes during peak and non-peak periods, regional differences, income classification impacts, and economic effects such as changes in electricity bills and price elasticity.
Year Five Report - The Evaluation Report for the 2025/26 TVP Season will be filed by July 31, 2026. - This report will include Phase 5 Winter results for the MURB TOU Tariff. - This presentation along with the June 2026 Kick-off & Work Pla...
AI summary The Year Five Report outlines the submission of the 2025/26 TVP Season Evaluation Report by July 31, 2026, which will include Phase 5 Winter results for the MURB TOU Tariff. The report will be accompanied by related presentations and responses.