E-32025 DSM Evaluation Reports
103 passages
DEFINITIONS Accuracy Reflects the proximity of measurements to the true value. Net savings Energy or peak demand savings that can be reliably attributed to a program. This includes effects such as free-ridership and spillover that negative...
AI summary The document defines key terms related to energy efficiency and measurement, including accuracy, net savings, net-to-gross ratio, non-sampling error, and peak coincidence factor, providing detailed explanations for each.
NTGR values to be applied to non-lighting measures included in the program. 10 Except for solar PV projects for which the 2023 free-ridership level was applied. As part of the 2025 evaluation, the spillover levels were updated for Instant...
AI summary The document outlines the application of NTGR to non-lighting measures, updates to spillover levels for specific programs in the 2025 evaluation, and the exclusion of low-income participants from free-ridership calculations due to nil spillover effects.
4 Impact Evaluation Results This section presents an analysis of the impact evaluation results for all program components by comparing 2025 tracked electrical energy and peak demand savings with evaluated electrical energy and peak demand...
AI summary This section compares 2025 tracked electrical energy and peak demand savings with evaluated savings, presenting NTGRs, lifetime energy savings, and GHG emission reductions. It evaluates program component impacts through these metrics.
4.1 Individual Impact Evaluation Results [Table](#page-24-0) 5 and [Table](#page-25-0) 6 below respectively list the evaluated electrical energy and peak demand savings as well as the corresponding savings tracked by E1 for each program co...
AI summary Table 5 and Table 6 present evaluated electrical energy and peak demand savings, along with tracked savings by E1 for each program component in 2025. Net savings are calculated using the net-to-gross ratio (NTGR), and lifetime savings are based on energy efficiency measures over their effective useful life (EUL). Line loss factors were submitted to the Nova Scotia Utility and Review Board (NSUARB) as part of the 2014 Cost of Service Study Progress Update.
Table 5: Comparison of 2025 Evaluated and Tracked Electrical Energy Savings at the Generator a Program Component Tracked Results Evaluated Results DSM Program Annual Gross Savings (GWh) Annual Net Savings (GWh) Annual Gross Savings (GWh) N...
AI summary Table 5 compares the evaluated and tracked electrical energy savings from various programs in 2025. It includes data on residential and BNI programs, showing gross and net savings, net-to-gross ratios, lifetime savings, and net realization rates for each component.
b Subtotal NTGR values represent average values for the Residential and BNI portfolios. The portfolio total NTGR value represents an average value for all programs. c There were no tracked savings for Residential Behaviour, and net savings...
AI summary The text discusses the calculation of NTGR values for residential and BNI portfolios, noting that average values are used. It also explains that no tracked savings were recorded for Residential Behaviour, leading to the use of net savings in place of gross savings to prevent undercounting, and the exclusion of Residential Behaviour results from the realization rate calculation.
4.2 Net-to-gross Ratios The NTGRs outlined in [Table](#page-33-0) 7 below were applied to gross savings to estimate net savings. NTGRs were established based on the free-ridership levels and spillover in some cases. Based on the establishe...
AI summary The document discusses the calculation of Net-to-gross Ratios (NTGRs) based on free-ridership and spillover levels, using the equation NTGR = (1 - % Free-ridership + % Spillover). The methodology relies on self-reporting and is detailed in Subsection 2.1.7. Table 7 summarizes the NTGRs for each program component in the 2025 evaluation.
Table 7: 2025 Free-ridership, Spillover, and NTGRs Program Component and Measure Type Free-ridership Levels Spillover Levels NTGRs Assessmenta Solar PV Measures 26% 1% 0.75 Green Heata MSHPs 48% - 0.52 Biomass and Solar 47% 0.53 Demand Red...
AI summary Table 7 presents data on free-ridership levels, spillover levels, and net-to-gross ratios (NTGRs) for various energy efficiency programs in 2025. The table includes metrics for different program components such as solar PV measures, heat pumps, and efficient product installation, with varying levels of free-ridership and spillover depending on participant income status.
APPENDIX III NTGR Calculations This appendix provides an example of net-to-gross ratio (NTGR) calculations. The example details the calculations of participant free-ridership levels and resulting NTGRs for BER-AR lighting measures. The Eva...
AI summary Appendix III explains net-to-gross ratio (NTGR) calculations for BER-AR lighting measures, including participant free-ridership analysis. The Evaluator applied similar methods to other program components, with detailed evaluations in individual program reports.
NTGR Calculations Free-ridership algorithm Low Free-i Partici • High Free-ric Participa Medium Free-ri Participa 3) Probably would not have 4) Definitely would not have 98/99) Don't know/Refused 75% 100% EMPTY would not 75%. 75% not have h...
AI summary The text presents a table related to NTGR (Net-to-Gross Ratios) calculations, including free-ridership algorithms, timing scores, tilling scores, and inconsistency tests. It includes percentages and conditions for evaluating the replacement of lamps and fixtures in energy efficiency programs.
$$NTGR = 1 - FR_{total} + SC$$ 2475, Laurier boul., Suite 250 Quebec City, QC G1T 1C4 Canada Tel.: 418-692-2592 Fax: 418-692-4899 EfficiencyOne
AI summary The document includes a formula for calculating Net-to-Gross Ratios (NTGR) and references EfficiencyOne, a potential entity involved in the proceeding. The text also contains images and contact information for an organization in Quebec City.
ABBREVIATIONS ARCA ARCA Canada Inc. ARet Appliance Retirement ASFH Affordable Single-family Homes BNI Business, non-profit, and institutional DA Delivery agent DR Demand response DSM Demand-side management DSM MA Demand-side Management Mea...
AI summary This document provides a list of abbreviations and their full forms used in the Nova Scotia regulatory proceeding, including terms related to energy efficiency, demand-side management, and utility programs.
Table 3: Comparison of 2025 Tracked and Evaluated Savings at the Generator Gross Savings Net Savings Realization Value Unit NTGR Value Unit Rate Electrical Energy Savings Tracked Savings by E1 0.205 GWh 0.56 0.115 GWh Evaluation Results 0....
AI summary Table 3 compares tracked and evaluated savings at the generator for 2025, showing gross and net savings for electrical energy and peak demand. The data includes values from EfficiencyOne (E1) and evaluation results, with Net-to-Gross Ratios (NTGR) and realization rates provided for each category.
Net savings represent the savings that can be reliably attributed to a program component. For ARet, net savings are calculated by applying the NTGR values to gross savings as illustrated in the following equation. Net Savings = Gross Savin...
AI summary Net savings for the Appliance Retirement program are calculated using Net-to-Gross Ratios (NTGR) applied to gross savings, resulting in 54 tonnes of CO2 eq in annual GHG emission reductions.
Table 10: Evaluated 2025 ARet Net Electrical Energy and Peak Demand Savings Appliance Retirement Measure Category Refrigerators Freezers Room Air Conditioners Small Refrigerators Small Freezers Total Electrical Energy Savings Gross Electri...
AI summary Table 10 shows the evaluated 2025 ARet Net Electrical Energy and Peak Demand Savings, indicating that ARet only achieved 9% of its electrical energy and peak demand savings targets. The table includes metrics such as gross and net energy savings, NTGR, line loss factor, and effective useful life.
6 Instant Savings Evaluation Approach The 2025 Instant Savings evaluation included a condensed impact evaluation with a literature review to identify NTGR values to be applied to non-lighting measures included in the program. The main obje...
AI summary The 2025 Instant Savings evaluation aimed to calculate gross and net results, including energy savings, peak demand savings, and avoided GHG emissions. The evaluation included a literature review to identify NTGR values for non-lighting measures and outlined research questions, methods, and sample sizes.
Table 14: 2025 Instant Savings Evaluation Approach Evaluation Objective Research Question Methodology Calculate gross results › Are the data in the tracking sheet complete, accurate, and consistent? › Are the unitary savings for appliance...
AI summary This section outlines the evaluation approach for the 2025 Instant Savings program, focusing on calculating both gross and net results. It includes methods such as tracking sheet audits, DSM Measure Assessment updates, literature reviews, and GHG emission reduction calculations.
NTGR Update The Evaluator updated the NTGR values for non-lighting measures, which were previously all 1.00, following a literature review. The results of the literature review are presented in Subsection [7.3.3](#page-117-1) and Appendix...
AI summary The Evaluator updated NTGR values for non-lighting measures from 1.00 based on a literature review. Findings are detailed in Subsection 7.3.3 and Appendix IV, reflecting revised net-to-gross ratios for energy efficiency programs.
Table 21: Spillover Levels Used in the 2025 Instant Savings Evaluation Product Spillover Level Efficient Clothes Washers ENERGY STAR Certified Clothes Dryers Efficient Combined Washers/Dryers ENERGY STAR Certified Dehumidifiers 3% ENERGY S...
AI summary Table 21 presents spillover levels for various energy-efficient products used in the 2025 Instant Savings Evaluation. The table includes products such as efficient clothes washers, ENERGY STAR certified dehumidifiers, and others, with only the dehumidifiers having a specified spillover level of 3%. The section also mentions Net-to-gross Ratio Calculations, which are relevant to the evaluation process.
The NTGRs are calculated using the following equation. $$NTGR = (1 - \% Free-ridership + \% Spillover)$$ Using this equation, the NTGR values were estimated for rebated products for which free-ridership and spillover levels were determined...
AI summary The document outlines the calculation of Net-to-Gross Ratios (NTGR) using free-ridership and spillover percentages. NTGR values were estimated for rebated products, while other products used literature review findings. Table 22 summarizes NTGR values, free-ridership, and spillover levels, with LED lighting products using values from the 2024 Instant Savings evaluation.
Table 22: 2025 Instant Savings Net-to-gross Ratios Product Free ridership Level Spillover Level Tracked Net to-gross Ratio Evaluated Net to-gross Ratio Dimmer Switches - - 1.00 0.75 Indoor Motion Sensors - - 0.75 Indoor Motion Sensors with...
AI summary Table 22 presents the 2025 Instant Savings Net-to-gross Ratios for various energy efficiency products, highlighting the evaluated net-to-gross ratios and free-ridership levels for some items. These ratios indicate the proportion of energy savings that are captured versus the total potential savings.
Net savings are defined as the changes in energy use that are attributable specifically to Instant Savings. Net program component impacts were estimated by applying the overall NTGR to gross savings as exemplified in the following equation...
AI summary Net savings are calculated using the Net-to-Gross Ratios (NTGR) applied to gross savings, resulting in 5,364 tonnes of CO2 eq in annual GHG emission reductions from energy use changes attributable to Instant Savings.
Table 23: Evaluated 2025 Instant Savings Net Electrical Energy and Peak Demand Savings LED Non-A-ty /pe Lamps LED EN ERGY STAR Fixture es · Dimensor Indoor Outdoor Net Electrical Energy Savings – at the Meter (GWh) 0.040 1.218 0.060 0.009...
AI summary Table 23 presents evaluated 2025 instant savings for various lighting and energy efficiency measures, including net electrical energy and peak demand savings at the meter and generator, along with effective useful life and net-to-gross ratios (NTGR) for each measure.
8 Instant Savings Key Findings and Recommendations The 2025 Instant Savings evaluation included a condensed impact evaluation and a literature review to determine NTGRs for non-lighting measures. The main objectives of the 2025 Instant Sav...
AI summary The 2025 Instant Savings program exceeded its net electrical energy savings target by 18% (11.430 GWh) but missed its peak demand savings target by 52% (0.466 MW vs. 0.965 MW). Participation dropped 71% after removing LED lighting and dehumidifiers, with controls becoming the top rebated category (61% of products). Evaluated NTGRs (0.77) were lower than E1-tracked values (0.98) due to revised non-lighting product ratios.
CONCLUSION [Table](#page-124-1) 25 presents the participation levels, NTGRs, evaluated gross and net savings at the generator, annual GHG emission reductions, as well as EUL values for each Residential Efficient Product Rebates program com...
AI summary Table 25 summarizes participation levels, net-to-gross ratios (NTGRs), evaluated savings, GHG emission reductions, and effective useful life (EUL) values for Nova Scotia's 2025 Residential Efficient Product Rebates program components and overall program performance.
Instant Savings Appendix III Instant Savings: Tracking Sheet Audit Appendix IV Instant Savings: 2025 Net-to-gross Ratio Literature Review Appendix V Instant Savings: 2025 Recommendations 2475, Laurier boul., Suite 250 Quebec City, QC G1T 1...
AI summary The document outlines appendices related to 'Instant Savings,' including a tracking sheet audit, a 2025 Net-to-Gross Ratio literature review, and 2025 recommendations. EfficiencyOne is identified as an organization involved in the proceeding.
APPENDIX IV Instant Savings Net-to-Gross Ratio Literature Review
AI summary This literature review examines the Instant Savings Net-to-Gross Ratio (NTGR), a metric used to evaluate the effectiveness of energy efficiency programs. It focuses on how NTGR quantifies the relationship between immediate cost savings and total program costs, influencing decisions on demand-side management (DSM) and incentive structures.
Introduction For Instant Savings, free-ridership occurs when participants would have installed the same energy efficient products in the absence of the program component. The Net-to-Gross Ratio Review[1](#page-133-1) report recommends that...
AI summary The text discusses free-ridership in Instant Savings programs, where participants might have adopted energy-efficient measures without program incentives. It notes challenges in measuring net-to-gross (NTG) ratios for all measures, leading to reliance on literature reviews for NTG estimates.
Table 1: Jurisdictions Consulted Within Literature Review Jurisdiction Scope of Available Information on NTGRs Whether the Jurisdiction Was Retained Rationale California Found in program evaluation reports No Reviewed reports with NTG eval...
AI summary The table reviews jurisdictions consulted in a literature review, focusing on the availability of Net-to-Gross Ratios (NTGRs) related to instant rebate programs. Most jurisdictions only provided final NTGR values, while Illinois included additional context with free-ridership and spillover values.
[Table 2](#page-135-0) presents NTGR established by measure based on this review along with reference and rationale used. It should be noted that the NTGR values for solar fixtures and heat pump water heaters were not based on the literatu...
AI summary Table 2 presents NTGR values established based on a literature review. Solar fixtures and heat pump water heaters were assigned specific NTGR values due to lack of reliable data and low market penetration in Nova Scotia. EfficiencyOne's current LED fixture NTGR was used for solar fixtures, while heat pump water heaters received a value of 1.00.
Table 2: Assigned NTGR Assumptions Measure Available Through Instant Savings Associated Measure in Reference Assigned NTGR Reference Program Delivery Mode Associated with Assigned NTGR Rationale Behind Assigned NTGR Dimmer Switches Occupan...
AI summary Table 2 outlines assigned Net-to-Gross Ratios (NTGR) for various energy efficiency measures, including dimmer switches, motion sensors, and smart thermostats. NTGR values are based on market data, literature reviews, and participant surveys. Some entries lack assigned NTGR values, while others reference specific evaluations and reports.
Future Considerations In order to remain aligned with good industry practice, the Evaluator recommends the adoption of the NTGR values presented in this memo. Looking ahead, the Evaluator intends to work with E1 to consider targeted evalua...
AI summary The Evaluator recommends adopting NTGR values for alignment with industry practices and proposes targeted evaluations with E1 to assess Instant Savings program measures, focusing on those contributing significantly to portfolio savings.
Table 1: Summary of 2025 Existing Residential Program Evaluation Program Component Evaluation Type Impact Process Market Methodology AMH Condensed › Tracking sheet audit › Desk reviews › Effective useful life (EUL) update › Use of a net-to...
AI summary The document summarizes the evaluation of existing residential programs in 2025, including methods like tracking sheet audits, net-to-gross ratio (NTGR) calculations, and GHG emission reduction assessments for various components such as AMH, ASFH, EPI, Green Heat, HEA, and MHEEP. It also includes a comprehensive evaluation of residential behavior.
[Table](#page-154-0) 2 below presents the participation levels, NTGRs, evaluated gross and net savings at the generator, annual GHG emission reductions, as well as effective useful life (EUL) values for each program component and for Exist...
AI summary The table presents participation levels, net-to-gross ratios, evaluated gross and net savings, annual GHG emission reductions, and effective useful life values for each program component and for Existing Residential as a whole.
EPI Findings and Recommendations This subsection presents the key findings from 2025 EPI evaluation. The Evaluator has no specific recommendation for EPI. 2025 EPI-Finding: With 7.300 GWh in net electrical energy savings and 0.509 MW in ne...
AI summary The 2025 EPI evaluation found that net electrical energy and peak demand savings fell short of targets by 46% and 68%, respectively. Participation and installed measures dropped by 7.5% and 40% due to phasing out lighting measures, though average savings per participant only decreased by 12%. A minor update to NTGR calculations achieved 99% and 100% realization rates for savings.
Program Tracked and Evaluated Savings [Table](#page-159-0) 3 below compares E1 tracked electrical energy and peak demand savings to evaluated savings at the generator. It also includes the realization rate for both electrical energy saving...
AI summary The text compares E1 tracked electrical energy and peak demand savings to evaluated savings at the generator, noting differences due to NTGRs. It also explains that the Residential Behaviour program component lacks a tracking sheet and realization rate due to random selection of participants.
3.3.1 Evaluated Net Savings Net savings are defined as the changes in energy use that are specifically attributable to AMH. Since spillover and free-ridership effects were considered nil, the net electrical energy savings are equal to the...
AI summary The evaluated net savings for AMH (Affordable Multifamily Housing) show a 27% shortfall in electrical energy savings but a 13% exceedance of peak demand savings targets. Net savings equal gross savings due to nil spillover and free-ridership effects. Data sources include Nova Scotia Power's 2024 emissions and Emera Inc.'s annual report.
7.3.1 Evaluated Net Savings Net savings are defined as the changes in energy use that are specifically attributable to ASFH. Since spillover and free-ridership effects were considered nil, the net electrical energy savings are equal to the...
AI summary Evaluated Net Savings for Affordable Single-family Homes (ASFH) show 114% and 183% exceedance of electrical energy and peak demand targets. Net savings equal gross savings due to nil spillover and free-ridership. GHG emission reductions match gross reductions. Data sources include Nova Scotia Power and Emera Inc.
Table 21: 2025 EPI Evaluation Approach Evaluation Objectives Research Questions Methodology Calculate gross results › Are the data in the tracking sheet complete, accurate, and consistent? › What are the evaluated first-year and lifetime g...
AI summary This table outlines the evaluation approach for the 2025 Efficient Product Installation (EPI) program. It includes objectives such as calculating gross and net results, research questions related to data accuracy and energy savings, and methodologies like tracking sheet audits and the use of Net-to-Gross Ratios (NTGR) from previous surveys.
11.3 Net Savings The Evaluator determined the net electrical energy and peak demand savings that can be reliably attributed to a program component by estimating the NTGR. In the case of EPI, the NTGR is established considering the free-rid...
AI summary The Evaluator calculates net energy and peak demand savings using NTGR, adjusting for free-ridership and spillover effects in EPI programs. This approach accounts for both positive and negative impacts on energy savings from participant behavior and broader program influences.
Table 27: 2025 EPI Participant Spillover Levels Average Participant Spillover Level Margin of Error Low-income Participants All Products 0% N/A Non-low-income Participants All Products 8% 3.8% 11.3.3 Net-to-gross Ratio Calculation
AI summary Table 27 outlines the 2025 EPI Participant Spillover Levels, showing that low-income participants have 0% average spillover with no margin of error, while non-low-income participants have an 8% average spillover with a 3.8% margin of error. Section 11.3.3 discusses the Net-to-gross Ratio Calculation.
The NTGR values were calculated using the following equation. NTGR = (1 – % Free-ridership + % Internal Spillover) Overall NTGR values were updated in 2025 using the specific NTGR value established per participant type and product category...
AI summary The document explains how Net-to-Gross Ratios (NTGR) were calculated using a formula that incorporates free-ridership and internal spillover percentages. The 2025 evaluation updated NTGR values based on participant types and product categories, with little change from the 2024 values due to stable savings proportions.
Net savings are defined as the energy use reductions that are specifically attributable to EPI. Net savings were estimated by applying the overall NTGR to gross savings as exemplified in the following equation. Net Savings = Gross Savings...
AI summary Net savings are calculated by applying the Net-to-Gross Ratios (NTGR) to gross savings, which represent energy use reductions specifically attributable to the Efficient Product Installation (EPI) program. This calculation applies to both electrical energy savings and peak demand savings.
The detailed results per measure are presented in [Table](#page-17-0) 29 below. The net electrical energy savings resulted in 3,426 tonnes of CO2 eq in net annual GHG emission reductions. LED Lamps Product Category 18 W Replacing 100 W PAR...
AI summary The table presents detailed results for energy savings from LED lamps, showing net electrical energy savings and GHG emission reductions. The net annual GHG emission reductions are 3,426 tonnes of CO2 eq.
Table 30: Comparison of 2025 EPI Tracked and Evaluated Savings at the Generator Gross Savings NTGR Net Savings Realization Value Unit Value Value Unit Rate Value 7.405 GWh 0.99 7.338 GWh 7.405 GWh 0.99 7.300 GWh 99% 0.518 MW 0.98 0.509 MW...
AI summary Table 30 compares the 2025 EPI tracked and evaluated savings at the generator, showing gross savings, net savings, and realization rates for different product categories. The table highlights the net-to-gross ratios (NTGR) for each category, with values ranging from 98% to 99%.
2025 EPI-Finding: Evaluated net electrical energy and peak demand savings were almost identical to the values tracked by E1. The gross corrected tracked values were identical to the gross evaluated values since no gross savings calculation...
AI summary The 2025 EPI-Finding found that evaluated net electrical energy and peak demand savings matched E1's tracked values due to unchanged gross savings parameters. The only update involved recalculating NTGR values based on participant type proportions, resulting in 99% and 100% realization rates for energy and demand savings respectively.
15.5.2 Net-to-gross Ratio Calculation The NTGR was calculated using the following equation. $$NTGR = (1 - \% Free-ridership)$$ Using the free-ridership level established for each measure category, the Evaluator calculated the NTGR values p...
AI summary The Net-to-gross Ratio (NTGR) is calculated using the formula (1 - % Free-ridership), with the free-ridership level for each measure category used to determine the NTGR values presented in Table 37.
Table 47: 2025 HEA Participant Spillover Level Measure Number of Participants Generating Spillover Average Participant Spillover Level All Measures 11 1% 19.3.3 Net-to-gross Ratio Calculation
AI summary Table 47 presents the 2025 HEA Participant Spillover Level, showing that 11 participants generated an average spillover level of 1%. Section 19.3.3 discusses the Net-to-gross Ratio Calculation.
The NTGR is calculated using the following equation. NTGR = (1 – % Free-ridership + % Participant Spillover) The NTGR values calculated with the free-ridership and spillover levels established for HEA are presented in [Table](#page-54-1) 4...
AI summary The Net-to-Gross Ratios (NTGR) are calculated using a formula that incorporates free-ridership and participant spillover levels, with specific values provided for HEA in Table 48.
Table 48: 2025 HEA NTGR Values Measure Free-ridership Participant Spillover NTGR Energy Efficiency Measures 17% 0.84 Solar PV Measures 26% 1% 0.75 19.3.4 Unconverted Assessment Spillover
AI summary Table 48 presents the 2025 HEA NTGR Values, showing Energy Efficiency Measures with 17% free-ridership and Solar PV Measures with 26% free-ridership and 1% participant spillover. The NTGR values are 0.84 and 0.75, respectively. Section 19.3.4 discusses unconverted assessment spillover.
Net savings are defined as the energy use reductions specifically attributable to HEA. Net savings were calculated by applying the NTGR value, adding unconverted D assessment spillover savings, and subtracting Green Heat and EPI savings, a...
AI summary Net savings are calculated using the NTGR value and adjustments for spillover and deduction factors, resulting in 6,486 tonnes of CO2 eq in annual GHG emission reductions from energy use reductions attributable to HEA.
Table 52: Evaluated 2025 HEA Net Electrical Energy and Peak Demand Savings Energy Efficiency Measures Solar PV Measures Total Electrical Energy Savings Gross Electrical Energy Savings – at the Meter (GWh) 5.941 7.550 13.491 Unconverted D A...
AI summary Table 52 presents evaluated 2025 HEA (Home Energy Assessment) net electrical energy and peak demand savings. The data shows that HEA surpassed its electrical energy and peak demand savings targets by 61% and 6%, respectively, as outlined in Figure 23.
Table 53: Comparison of 2025 HEA Tracked and Evaluated Savings at the Generator Gross Savings NTGR Net Savings Realization Rate Value Unit Value Value Unit Value Electrical Energy Savings Tracked Savings by E1 14.769 GWh 0.94 13.820 GWh Ev...
AI summary Table 53 compares the tracked and evaluated savings from the 2025 Home Energy Assessment (HEA) program, focusing on electrical energy and peak demand savings. The table shows 100% realization rates for both categories, with Net-to-Gross Ratios (NTGR) calculated as the ratio of net savings to gross savings, including deductions from Green Heat and EPI savings.
Table 54: 2025 MHEEP Evaluation Approach Evaluation Objectives Research Questions Methodology Calculate gross results › Are the data in the tracking sheet complete, accurate, and consistent? › What are the evaluated first year and lifetime...
AI summary Table 54 outlines the 2025 MHEEP Evaluation Approach, focusing on calculating gross and net results through tracking sheet audits and evaluations. It includes research questions related to data accuracy and energy savings, as well as methodologies involving NTGR and GHG emission reduction calculations.
23.3 Net Savings The Evaluator determined the net energy and peak demand savings, i.e. the electrical energy and peak demand savings that can be reliably attributed to the program component, by estimating a net-to-gross ratio (NTGR). More...
AI summary The Evaluator calculated net energy and peak demand savings using a net-to-gross ratio (NTGR) of 1.00, attributing this to the unique financial context of Mi'kmaw communities with limited housing budgets. The NTGR accounts for spillover and free-ridership effects on gross savings.
23.3.1 Evaluated Net Savings Net savings are defined as the electrical energy savings specifically attributable to MHEEP. Since spillover and free-ridership effects were considered nil, net MHEEP impacts are equal to the gross savings gene...
AI summary The evaluated net savings from the Mi'kmaw Home Energy Efficiency Project (MHEEP) amount to 0.337 GWh and 0.319 MW, with no spillover or free-ridership effects. The program underperformed its energy savings target by 39% but exceeded peak demand savings by 104%.
Table 58: Comparison of Tracked and Evaluated 2025 MHEEP Savings at the Generator Gross Savings Net Savings Realization Value Unit NTGR Value Unit Rate Energy Savings Tracked Savings by E1 0.337 GWh 1.00 0.337 GWh Evaluation Results 0.337...
AI summary Table 58 compares tracked and evaluated energy and peak demand savings from the Mi'kmaw Home Energy Efficiency Project (MHEEP) in 2025. Energy savings show 100% realization, while peak demand savings are at 76% realization, based on Net-to-Gross Ratios (NTGRs).
24 MHEEP Key Findings and Recommendations As previously mentioned, the main objectives of the 2025 MHEEP evaluation were as follows: › Calculate gross and net MHEEP results, namely electrical first-year and lifetime electrical energy savin...
AI summary The 2025 MHEEP evaluation found net electrical energy savings (0.337 GWh) fell short of targets (0.548 GWh), while peak demand savings (0.319 MW) exceeded targets (0.156 MW). Participation dropped 18% to 157 participants, reducing total savings by 16% compared to 2024. Discrepancies in peak demand savings between evaluator and E1 arose from methodological changes.
27.2 Net Savings For Residential Behaviour, savings are obtained from the change in electricity consumption resulting from behaviours adopted by treatment group participants compared with the change in electricity consumption observed amon...
AI summary Net savings for Residential Behaviour programs are calculated by comparing electricity consumption changes between treatment and control groups, using the Uniform Methods Project (UMP) framework. Savings are net of control group changes, eliminating free-ridership adjustments. However, increased participation in other programs may require avoiding double-counting between ENS initiatives.
CONCLUSION [Table](#page-88-0) 69 presents the participation levels, net-to-gross ratios (NTGRs), evaluated gross and net savings at the generator, annual greenhouse gas (GHG) emission reductions, as well as effective useful life (EUL) val...
AI summary Table 69 outlines participation levels, net-to-gross ratios, evaluated savings, GHG emission reductions, and effective useful life values for each program component and the Existing Residential program as a whole.
Table 69: Overall 2025 Existing Residential Participation and Evaluated Savings Participation Level Gross Savings NTGR Net Savings Lifetime Electrical Energy Savings 609.485 GWh 563.997 GWh Peak Demand Savings 10.684 MW 9.584 MW Annual GHG...
AI summary Table 69 provides an overview of the 2025 residential participation and evaluated savings for energy efficiency programs. It includes lifetime electrical energy savings, peak demand savings, annual GHG emission reductions, and effective useful life (EUL) of program components, with net-to-gross ratios (NTGR) presented for each category.
Evaluated 2025 ASFH Allocation of EPI Gross Electrical Energy and Peak Demand Savings Grand Total Number of Units Number of Units 5,299 Installation Rate (%) 90% Number of Units Installed 4,766 Electrical Energy Savings Gross Electrical En...
AI summary The 2025 Affordable Single-family Homes (ASFH) allocation of Efficient Product Installation (EPI) achieves 0.274 GWh gross electrical energy savings at the generator and 0.035 MW peak demand savings, with a 4.7-year effective useful life. Total units installed: 4,766 (90% of 5,299). Lifetime savings reach 1.290 GWh, adjusted for line loss factors.
Other changes include: - › An adjustment to a nil line loss factor to that of the residential rate code to avoid having nil savings at the generator - › An adjustment to the unitary savings values for air sealing measures according to the...
AI summary The text outlines adjustments to energy efficiency program parameters, including nil line loss factor changes, air sealing savings based on heating systems, dimmer switch/motion sensor interactive effects, updated NTGR values from 2024 evaluations, and rounded metric values for installation rates and adjustment ratios.
Table 1: 2025 BER Evaluation Approach Evaluation Type Methodology Component Service Impact Process Market BER Application Rebates Comprehensive › Tracking sheet audit › Project reviews with site visits › Application of 2024 Demand-side Man...
AI summary The 2025 BER Evaluation Approach outlines methodologies for assessing the Business Energy Rebates (BER) program, including tracking sheet audits, site visits, participant surveys, and the use of the 2024 Demand-side Management Measure Assessment (DSM MA). It also involves GHG emission reduction calculations and jurisdictional scans of BNI lighting programs in North America.
Program Performance Table 2 below presents participation levels, NTGRs, evaluated gross and net savings at the generator, annual GHG emission reductions, and effective useful life (EUL) values for each service as well as for BER overall.
AI summary Table 2 provides data on participation levels, net-to-gross ratios (NTGRs), evaluated gross and net savings, annual GHG emission reductions, and effective useful life (EUL) values for each service and for BER overall.
for electrical energy savings and 0.514 for peak demand savings. The 0.514 adjustment ratio has a higher margin of error than anticipated, which means this value may not be reliable for future years. Recommendation #1: Use the calculated a...
AI summary The text discusses adjustment ratios (ARs) for energy and demand savings, noting the 0.514 AR's reliability issues. It recommends using calculated ARs (excluding 0.514 for non-lighting/HVAC) and reassessing ratios in 2026. The 2025 BER findings show updated NTGR values for Application Rebates, with higher net savings due to reduced free-ridership and revised adjustment ratios.
Table 3: Comparison of Tracked and Evaluated 2025 BER Savings at the Generator Gross Savings Net Savings Realization Rate Value Unit Value Unit BER Electrical Energy Savings Tracked Savings by E1 44.659 GWh 0.85 38.065 GWh 106% Evaluation...
AI summary Table 3 compares tracked and evaluated 2025 Business Energy Rebates (BER) savings at the generator level. Tracked savings by E1 and evaluation results are presented for electrical energy and peak demand savings, along with realization rates and net-to-gross ratios.
3.3.3 Net-to-gross Ratio Calculation The NTGR is calculated using the following equation. $$NTGR = (1 - \% Free-ridership + \% Spillover)$$ [Table](#page-166-3) 12 presents the NTGR values calculated by the Evaluator using the free-ridersh...
AI summary The Net-to-gross Ratio (NTGR) is calculated using the formula (1 - % Free-ridership + % Spillover). The Evaluator used free-ridership and spillover levels to calculate NTGR values for Application Rebates. Since the measure was discontinued in 2025, the NTGR for renewable generation (solar PV) was not reassessed, and a value of 1.00 was retained.
4.3.2 Net-to-gross Ratio The NTGR is calculated using the following equation. $$NTGR = (1 - \% Free-ridership)$$ As presented in [Table](#page-176-1) 20 below, the NTGRs for the main measure categories were established using the 2024 free-...
AI summary The Net-to-Gross Ratio (NTGR) is calculated as (1 - % Free-ridership). For 2024, NTGRs for main measure categories were established using free-ridership levels, while Instant Rebates used an NTGR of 1.00. Data on emissions and electricity generation were sourced from Nova Scotia Power and Emera Inc.
Table 20: 2025 Instant Rebates Evaluated NTGRs Measure Free-ridership NTGR LED Linear Fixtures 8% 0.92 LED Linear Lamps 15% 0.85 LED Outdoor Fixtures 15% 0.85 Other Measures 0% 1.00 4.3.3 Evaluated Net Savings
AI summary Table 20 presents the evaluated net-to-gross ratios (NTGRs) for various energy efficiency measures under the 2025 Instant Rebates program. The table includes free-ridership percentages and NTGR values for LED Linear Fixtures, LED Linear Lamps, LED Outdoor Fixtures, and Other Measures.
Net savings are defined as the changes in energy use that are specifically attributable to Instant Rebates. Net savings were estimated by applying the NTGR presented above to evaluated gross savings as exemplified in the following equation...
AI summary The document explains the calculation of net savings from Instant Rebates, using the Net-to-Gross Ratio (NTGR) applied to evaluated gross savings. This calculation results in 14,857 tonnes of CO2 eq in annual GHG emission reductions.
and 0.514 for peak demand savings The higher-thanexpected margin of error for the combined adjustment ratio for the peak demand savings, indicates that this value may not be reliable for future years. Recommendation #1 : Use the calculated...
AI summary The document highlights the need to reassess adjustment ratios for peak demand savings in non-lighting and non-HVAC measures, citing unreliable margins of error. It recommends using updated NTGR values for net savings calculations and notes 2025 BER findings showing higher NTGR and discrepancies between BER and E1 tracked savings. Adjustments for agriculture and motor measures are advised for 2026.
CONCLUSION Table 30 below presents the participation levels, net-to-gross ratios (NTGRs), evaluated gross and net savings at the generator, annual GHG emission reductions, as well as effective useful life (EUL) values for each service and...
AI summary Table 30 presents participation levels, net-to-gross ratios, evaluated gross and net savings, annual GHG emission reductions, and effective useful life values for each service and Efficient Product Rebates as a whole.
Net-to-gross ratio The ratio of net electrical energy savings to gross electrical energy savings.
AI summary The document defines the net-to-gross ratio as the ratio of net electrical energy savings to gross electrical energy savings.
EfficiencyOne (E1), an independent and non-profit organization, is responsible for helping Nova Scotians improve the energy efficiency of their homes and workplaces by designing, marketing, and delivering demand-side management (DSM) for N...
AI summary EfficiencyOne (E1) is a non-profit organization responsible for delivering demand-side management (DSM) programs in Nova Scotia through the Efficiency Nova Scotia (ENS) franchise. E1 is funded by Nova Scotia Power (NS Power) ratepayers and has a portfolio of residential, BNI, and demand response programs. Econoler was commissioned to evaluate E1's 2025 DSM program portfolio, including the Custom Incentives program and its components, such as Strategic Energy Management (SEM). The evaluation focuses on baseline definitions, savings calculation methods, parameter values, and net-to-gross ratios.
Table 6: 2025 Custom Evaluation Approach Evaluation Objectives Research Questions Methodology Calculate gross results › Are the data in the tracking sheet complete, accurate, and consistent? › Are the gross savings calculated for a sample...
AI summary Table 6 outlines a 2025 Custom Evaluation Approach focusing on calculating gross and net results of energy efficiency programs. It includes evaluation objectives, research questions, and methodologies, such as tracking sheet audits, site visits, participant interviews, and GHG emission calculations.
Table 8: Impact Evaluation Approach per Retrofit Project Category Retrofit Project Category Number of Projects Completed in 2025 (Final Savings Claims) Gross Savings Methodology Net Savings Methodology Regular Retrofit 27 Adjustment ratio...
AI summary Table 8 outlines the impact evaluation approach for different retrofit project categories in 2025, including the number of projects completed, gross savings methodology, and net savings methodology. Each category uses different evaluation methods, such as adjustment ratios and net-to-gross ratios (NTGR), based on previous years' data.
The Evaluator determined net electrical energy and peak demand savings, that is, the electrical energy and peak demand savings that can be reliably attributed to a service, by estimating a NTGR. Specifically, the NTGR includes effects such...
AI summary The Evaluator calculated net electrical energy and peak demand savings by estimating the Net-to-Gross Ratios (NTGR) for Retrofit projects, considering factors like free-ridership and spillover effects. Three distinct NTGRs were determined for the three Retrofit project categories, as detailed in Table 13.
Table 13: 2025 NTGR Approach per Retrofit Project Category Retrofit Project Category Number of Projects Completed in 2025 NTGR Methodology Sample Size (Unique Participant Interviews) Regular Retrofit 27 Free-ridership and spillover were me...
AI summary Table 13 outlines the 2025 NTGR approach for different retrofit project categories, detailing the methodology used to measure free-ridership and spillover effects. Regular Retrofit and Compressed Air Leak Audit projects used phone interviews with sampled participants, while Solar PV projects applied the 2023 NTGR evaluation. The sample size for each category is also noted, with a clarification on handling participants who completed multiple projects.
3.3.3 Net-to-gross Ratio Calculation The NTGR was calculated using the following equation. NTGR = (1 – % Free-ridership + % Participant Spillover) [Table](#page-82-3) 15 outlines the free-ridership and spillover levels established for Retr...
AI summary The Net-to-Gross Ratio (NTGR) is calculated using the formula (1 – % Free-ridership + % Participant Spillover). Table 15 provides free-ridership and spillover levels for Retrofit, along with NTGR values for each project category.
Table 15: Evaluated 2025 Retrofit NTGRs Project Category Free-ridership Level Spillover Level NTGR Regular Retrofit 8% 0% 0.92 Solar PV 38% 1% 0.63 Compressed Air Leak Audit 8% 0% 0.92 \ Free-ridership and spillover levels for solar PV pro...
AI summary Table 15 presents evaluated 2025 Retrofit Net-to-Gross Ratios (NTGRs) for different project categories, including Regular Retrofit, Solar PV, and Compressed Air Leak Audit. Free-ridership and spillover levels are provided, with solar PV data referencing the 2023 evaluation due to unmeasured 2025 values.
3.3.4 Evaluated Net Savings Net savings are defined as changes in energy use that are specifically attributable to Retrofit. Net Retrofit impacts are calculated by applying the NTGR value to gross savings as illustrated in the following eq...
AI summary Net savings from Retrofit projects are calculated using the Net-to-Gross Ratios (NTGR) applied to gross savings. The Evaluator used NTGR values for each project category and aggregated results to determine overall net savings. A true-up adjustment was made for multiyear projects completed in 2025, resulting in 6,413 tonnes of CO2 eq in annual GHG emission reductions with an average EUL of 10.6 years.
Table 16: Evaluated 2025 Retrofit Net Electrical Energy and Peak Demand Savings Partial Savings Claimed Final Savings Claimed for Single year Projects Final Savings Claimed for Multiyear Projects Total Number of Projects 9 31 6 46 Electric...
AI summary Table 16 presents the evaluated 2025 retrofit net electrical energy and peak demand savings, including gross and net savings, NTGRs, line loss factors, and effective useful life for different project categories. The data reflects adjustments made to savings claims and provides insights into the efficiency of various projects.
4.3.3 Net-to-gross Ratio Calculation The NTGR was calculated using the following equation. NTGR = (1 – % Free-ridership + % Participant Spillover) [Table](#page-88-3) 20 below outlines the free-ridership and spillover levels established fo...
AI summary The document discusses the Net-to-Gross Ratio (NTGR) calculation, which accounts for free-ridership and participant spillover. For projects with partial savings claims, a NTGR of 1.0 is applied, as outlined in earlier subsections.
Table 20: Evaluated 2025 P4P NTGR Value for Savings Claimed in 2025 Free-ridership Level 8% Participant Spillover Level 0% NTGR 0.92 4.3.4 Evaluated Net Savings
AI summary Table 20 presents the evaluated 2025 P4P NTGR with a free-ridership level of 8%, a participant spillover level of 0%, and a net-to-gross ratio (NTGR) of 0.92. This data is part of the analysis of net savings in the proceeding.
Net savings represent the savings that can be reliably attributed to a service. For P4P, net savings are calculated by applying the NTGR using the following equation. Net Savings = Gross Savings × NTGR The detailed net savings results are...
AI summary Net savings for P4P are calculated using the Net-to-Gross Ratios (NTGR), resulting in 569 tonnes of CO2 eq in annual GHG emission reductions. The average Effective Useful Life (EUL) was determined to be 7.9 years.
5.3 Net Savings The NTGR is applied to calculate net savings, that is, the savings that can be reliably attributed to a service. For New Construction, the NTGR was established by considering free-ridership. Spillover was assumed to be zero...
AI summary The NTGR is used to calculate net savings by accounting for free-ridership. For new construction, spillover was assumed zero due to low non-participant spillover potential, as evidenced by 2022 evaluations. This assumption led to spillover not being measured in the 2025 evaluation.
5.3.2 Net-to-gross Ratio Calculation The NTGR is calculated using the following equation. NTGR = (1 – % Free-ridership) [Table](#page-94-2) 25 outlines the free-ridership level established for New Construction, along with the calculated NT...
AI summary The Net-to-Gross Ratio (NTGR) is calculated as (1 – % Free-ridership). Table 25 outlines the free-ridership level for New Construction and the resulting NTGR value, with participant spillover assumed to be nil.
Table 25: Evaluated 2025 New Construction NTGR Projects Fully Claimed in 2025 Free-ridership Level 18% NTGR 0.82 5.3.3 Evaluated Net Savings
AI summary Table 25 presents the evaluated 2025 New Construction Net-to-Gross Ratios (NTGR) with a free-ridership level of 18% and an NTGR of 0.82. Section 5.3.3 discusses evaluated net savings, indicating the focus on assessing program effectiveness and efficiency.
Net savings represent the savings that can be reliably attributed to a service. For New Construction, net savings are calculated by applying the NTGR value in the following equation. Net Savings = Gross Savings × NTGR The results are liste...
AI summary Net savings are calculated using the Net-to-Gross Ratios (NTGR) value applied to gross savings. The average Energy Use Lifetime (EUL) was established at 18.7 years, resulting in 7,006 tonnes of CO2 eq in annual GHG emission reductions from net electrical energy savings.
6.3.1 Net-to-gross Ratio Calculation The NTGR was calculated using the following equation. NTGR = (1 – % Free-ridership + % Participant Spillover) [Table](#page-98-4) 30 outlines the free-ridership and spillover levels established for Buil...
AI summary The Net-to-Gross Ratio (NTGR) is calculated using the formula (1 – % Free-ridership + % Participant Spillover). Table 30 provides free-ridership and spillover levels for Building Optimization, along with the resulting NTGR value.
Table 30: Evaluated 2025 Building Optimization NTGR Value for Savings Claimed in 2025 Free-ridership Level 9% (±7.2%) Participant Spillover Level 0% NTGR 0.91 Free-ridership and spillover levels were not measured in 2025; hence, results fr...
AI summary Table 30 evaluates the 2025 Building Optimization NTGR, reporting a free-ridership level of 9% (±7.2%) and a net-to-gross ratio (NTGR) of 0.91. The free-ridership and spillover levels were not measured in 2025, so results from the 2021 Custom evaluation were used.
Net savings represent the savings that can be reliably attributed to a service. For Building Optimization, net savings are calculated by applying the NTGR value using the following equation. Net Savings = Gross Savings × NTGR The detailed...
AI summary Net savings for Building Optimization are calculated using the Net-to-Gross Ratios (NTGR) value, resulting in 260 tonnes of CO2 eq in annual GHG emission reductions. The average Energy Use Lifetime (EUL) was established at 3.0 years. Free-ridership and spillover levels were last measured in the 2021 Custom evaluation.
General Custom Key Findings and Recommendations 2025 Custom - Finding: Custom surpassed the net electrical energy and peak demand savings targets in 2025. Custom achieved 30.487 GWh in net electrical energy savings and 6.372 MW in net peak...
AI summary Custom exceeded 2025 energy savings targets (30.487 GWh and 6.372 MW) but saw reduced participation compared to 2024. Adjustments to savings metrics were applied, with free-ridership levels decreasing for Retrofit and New Construction. Evaluated savings were 8% higher than E1-tracked values.
11.3.1 Evaluated Net Savings Since spillover and free-ridership effects were considered nil, net SEM impacts are equal to gross savings. The 2025 SEM net electrical energy and peak demand savings were estimated at 4.031 GWh and 0.372 MW at...
AI summary The section states that SEM's net savings equal gross savings due to nil spillover and free-ridership. The 2025 SEM achieved 4.031 GWh energy and 0.372 MW peak demand savings, reducing GHG by 1,892 tonnes annually, exceeding targets by 52% and 29%.
CONCLUSION Table 39 below presents the participation levels, net-to-gross ratios (NTGRs), evaluated gross and net savings at the generator, annual greenhouse gas (GHG) emission reductions, as well effective useful life (EUL) values for eac...
AI summary The conclusion section references Table 39, which provides data on participation levels, net-to-gross ratios, evaluated savings, GHG emission reductions, and effective useful life values for Custom Incentives program components and the program as a whole.
APPENDIX XV SEM Project Review Protocol The SEM project review protocol used for the 2025 evaluation was the same protocol used in 2024. It includes sections that served to review both the bottom-up and top-down approaches used in the 2025...
AI summary The SEM Project Review Protocol for 2025 mirrors the 2024 approach, incorporating bottom-up and top-down evaluations. Methods include phone interviews and site visits based on E1 digital files, with a 2023-estimated net-to-gross ratio (NTGR) of 1.00 applied to the DSM cycle.
[Table](#page-1-0) 2 presents the participation levels, net-to-gross ratios (NTGRs), evaluated gross and net savings at the generator, annual GHG emission reductions, as well as effective useful life (EUL) values for the Direct Installatio...
AI summary Table 2 provides data on participation levels, net-to-gross ratios, evaluated gross and net savings, annual GHG emission reductions, and effective useful life values for the Direct Installation program.
3.3.3 Net-to-gross Ratio Calculation The NTGR results from the comprehensive impact evaluation performed in 2023 were used for the 2025 evaluation, the results of which are presented in [Table](#page-18-2) 13 below. The SBES NTGR was calcu...
AI summary The Net-to-Gross Ratio (NTGR) for the Small Business Energy Solutions (SBES) program is calculated using the equation NTGR = (1 – % Free-ridership + % Participant Spillover), based on the 2023 impact evaluation results used for the 2025 evaluation.
Table 13: 2025 SBES NTGRs Project Path Free-ridership Participant Spillover NTGR DIY 20% 0% 0.80 Audit 12% 0% 0.88 3.3.4 Evaluated Net Savings
AI summary Table 13 presents the 2025 SBES NTGRs for different project paths, including DIY and Audit, with associated free-ridership, participant spillover, and net-to-gross ratios. Section 3.3.4 discusses the evaluated net savings related to these projects.
Net savings are defined as the energy use reductions that are specifically attributable to SBES. Program component net impacts were estimated by applying the above NTGRs to the revised gross savings by using the following equation. Net Sav...
AI summary Net savings are calculated using NTGRs applied to revised gross savings, resulting in 3,689 tonnes of CO2 eq in annual GHG emission reductions from SBES program component net impacts.
4 SBES Key Findings and Recommendations The main objectives of the 2025 SBES evaluation were as follows: › Calculate gross and net electrical energy and peak demand savings, annually avoided GHG emissions, as well as EUL values and associa...
AI summary The 2025 SBES evaluation found that the program missed its net electrical energy and peak demand savings targets by 38% and 46%, respectively. Evaluated savings were slightly lower than E1's tracked values for energy but higher for peak demand. Participation increased by 1% compared to 2024, with DIY rebates dominating.
Table 1: 2025 SBES Corrected Tracked Savings Value Tracked by E1 Corrected Tracked Value Relative Difference Program Component Results Value Unit Value Unit Value SBES – Audit & DIY Gross Electrical Energy Savings – at the Generator 9.779...
AI summary Table 1 presents the 2025 SBES corrected tracked savings, showing minimal differences between the values tracked by E1 and the corrected values. Variations are attributed to rounding differences in calculations using the same net-to-gross ratios and line loss factors.
E-12E1 (NSEB) RIRs 1-66 - Redacted
28 passages
For the Instant Savings Program, CLEAResult has the following recommendations: General Principle Current Activities Recommended Activities Understand Financial Impacts For Instant Savings, EfficiencyOne gains an understanding of financial...
AI summary CLEAResult recommends continuing current activities for the Instant Savings Program, including program evaluation, planning, and financial analysis. They also suggest implementing general principles to support the program, particularly regarding incentive level changes and the introduction of new measures.
The current price floor for a participating measure is $0.99, regardless of the incentive. This floor ensures the customer pays something for the measure, and may assist with increasing the Net-to-Gross ratio. The price floor plays a simil...
AI summary The current price floor for participating measures is set at $0.99, ensuring customer contribution and potentially improving the Net-to-Gross ratio. This approach is similar to incentive caps in commercial programs, though it is not feasible in point-of-purchase programs due to logistical constraints. ENS may consider varying price floors for different measures in Instant Savings based on anticipated retail prices and incremental costs.
For the Business Energy Rebates program, CLEAResult has the following recommendations: General Principle Current Activities Recommended Activities During the program evaluation process, the energy savings assumptions and net-to gross ratio...
AI summary CLEAResult recommends updating energy savings assumptions and net-to-gross ratios during the program evaluation process for the Business Energy Rebates program, as these inputs significantly affect the cost-effectiveness impact.
Understand Financial Impacts For the Home Energy Assessment program, EfficiencyOne gains an understanding of financial impacts through the following activities: 1. Program Evaluation. Program Evaluation During the program evaluation proces...
AI summary The Home Energy Assessment program involves EfficiencyOne evaluating financial impacts through program evaluation, including reviewing energy savings assumptions and net-to-gross ratios, which affect cost calculations.
3.1.4 NET TO GROSS - Value: 0.92 - Source: Refer to CUS_IND_001 - Details: The NTGR for this measure is assumed to be consistent with CUS_IND_001.
AI summary The Net-to-Gross Ratio (NTGR) for this measure is assumed to be consistent with CUS_IND_001, with a value of 0.92.
7 3.2.4 NET TO GROSS - 8 Value: 0.82 - Source: Drawn directly from Table 25 [3](#page-61-4) 9 of the 2025 Custom Incentives Evaluation.
AI summary The value of 0.82 is derived from Table 25 of the 2025 Custom Incentives Evaluation, which is part of the Net to Gross analysis in the regulatory proceeding.
- 2 meter, as shown in the table below. 3 Input Description Partial Savings Claimed Final Savings Claimed for Single-Year Projects Final Savings Claimed for Multiyear Projects A EUL (Effective Useful Life) 5.9 10.4 12.9 B Gross Energy Savi...
AI summary The text presents a table with data on energy savings, including Effective Useful Life (EUL), Gross Energy Savings, and Gross Lifetime Savings, as well as their distribution across different project types. The table also includes a weighted average EUL for 2024. The section is labeled 'NET TO GROSS', indicating a discussion on net-to-gross evaluation methods.
2 3.5.4 NET TO GROSS 3 Value: 0.92 Source: Drawn directly from Table 2025[16](#page-75-3) 4 from the 2025 Custom Incentives Evaluation.
AI summary The Net to Gross (NTGR) value is reported as 0.92, derived from Table 2025 in the 2025 Custom Incentives Evaluation. This metric is used to assess the efficiency of energy programs, reflecting the ratio of net energy savings to gross energy savings.
- gross energy savings at the meter, as shown in the table below. Input Description Total A Gross Energy Savings - at the Generator (GWh) 1.98 B Gross Lifetime Energy Savings - at the Generator (GWh) 3.47 C = B / A Measure Life 1.76 3.6.4...
AI summary The text discusses gross energy savings at the generator, presenting data on total energy savings and measure life, with a focus on the net to gross calculation as outlined in section 3.6.4.
9 3.7.3 MEASURE LIFE 10 Value: 5.81 Years 22 2024 Custom Incentive Evaluation, Evaluated Gross Savings Table 32: Evaluated 2024 SEM Gross Electrical Energy and Peak Demand Savings, page 67 (PDF 839/1442) - Source: 2023 Custom Incentives Pr...
AI summary This section discusses the Effective Useful Life (EUL) of a measure, calculated as a weighted average of new and continuing projects. It also mentions the Net to Gross Ratio (NTGR) of 1.0 for SEM, and the incremental cost of energy savings, derived from average unit costs of evaluated SEM results from 2022 to 2024.
3 3.9.2 KEY SOURCES FOR MEASURE INPUT DEVELOPMENT - 4 The primary source of the values for measure input development is recent BER-AR program tracking data - 5 for this measure. 6 - 7 3.9.3 MEASURE LIFE - 8 Value: 18 Years - 9 Source: Assu...
AI summary This section outlines key sources for measure input development, including BER-AR program tracking data, an 18-year effective useful life for residential ductless mini-split heat pumps, a net-to-gross value of 0.83, and incremental costs of $4,324.22 per heat pump. Energy savings and peak demand savings are also provided based on tracked data.
4.1.4 NET TO GROSS Value: 1.0 Source: As set out in the 2024 DSM Program Evaluation Reports, [31](#page-93-6) free-ridership and spillover effects are nil since participants are non-profits or low-income housing owners with limited budgets...
AI summary The document discusses the Net to Gross (NTGR) value of 1.0 applied to the 2024 DSM Program Evaluation Reports due to nil free-ridership and spillover effects from participants in non-profit or low-income housing. It also outlines the direct installation cost, energy savings, and coincident peak demand savings associated with the program. The Efficient Product Installation (EPI) program is highlighted, focusing on the installation of energy-efficient products and its role in residential demand response.
Source: This value was drawn from Table 135[33](#page-96-4) of the 2024 DSM Measure Assessment. Instant Savings Low-flow Showerheads EPI, Instant Savings 10 DEER, 2014 (Value for low-flow showerheads) 4.2.4 NET TO GROSS
AI summary The text references data from Table 135 of the 2024 DSM Measure Assessment, focusing on 'Instant Savings' and 'Low-flow Showerheads' under the Energy Efficiency category. It also mentions a section on 'Net to Gross' in the document.
Source: This value was drawn from Table 135[37](#page-101-3) of the 2024 DSM Measure Assessment. Humidity Sensor for Bathroom Exhaust EPI 9 Illinois TRM, 2024 (Half the value of High Efficiency Fans Bathroom Exhaust Fan to account for rema...
AI summary The text references a table from the 2024 DSM Measure Assessment discussing humidity sensors for bathroom exhaust fans and their effective useful life. It also mentions a section on 'Net to Gross' in the document.
Source: This value was drawn from Table 135[41](#page-106-3) of the 2024 DSM Measure Assessment. MHEEP, ASFH programmable thermostats Smart Thermostats for Electrical Heating Systems Instant Savings, Various EUL values are used among juris...
AI summary The text discusses the use of various EUL values for smart thermostats in electrical heating systems, noting that the common practice is to use the same EUL value as for programmable thermostats. It references Table 135 from the 2024 DSM Measure Assessment.
Source: This value was drawn from Table 135[45](#page-110-4) of the 2024 DSM Measure Assessment. Smart Thermostats for Electrical Heating Systems Instant Savings, Various EUL values are used among jurisdictions. The common practice is to u...
AI summary The text discusses the use of EUL values for smart thermostats in electrical heating systems, noting that various jurisdictions use different values, with a common practice of aligning them with programmable thermostats. It also references a section on 'Net to Gross' from the 2024 DSM Measure Assessment.
Source: This value was drawn from Table 37 of the 2024 Existing Residential Evaluation. [46](#page-110-5) Products Participant Type NTGR Proportion of Product Category Gross Savings by Participant Type Overall NTGR Values LED Lamps and Lig...
AI summary The table presents net-to-gross ratios (NTGR) for various energy efficiency products by participant type in the 2024 Existing Residential Evaluation. It shows differences in savings proportions between low-income and non-low-income participants for different product categories.
Source: This value was drawn from Table 135[49](#page-114-4) of the 2024 DSM Measure Assessment. Smart Thermostats for Electrical Heating Systems Instant Savings, 10 Various EUL values are used among jurisdictions. The common practice is t...
AI summary The text references a table from the 2024 DSM Measure Assessment discussing Smart Thermostats for Electrical Heating Systems, including programs like MHEEP and ASFH, and mentions the use of EUL values for programmable thermostats. It also references section 4.6.4 'NET TO GROSS' from the document.
Source: This value was drawn from Table 37 of the 2024 Existing Residential Evaluation. [50](#page-114-5) Products Participant Type NTGR Proportion of Product Category Gross Savings by Participant Type Overall NTGR Values LED Lamps and Lig...
AI summary The table presents data on the 2024 EPI Net-to-gross Ratios by Product Category, highlighting the proportion of product category gross savings by participant type (low-income and non-low-income) and NTGR values for various residential energy efficiency products such as LED lamps, smart thermostats, and air sealing products.
Source: This value was drawn from Table 135[53](#page-118-3) of the 2024 DSM Measure Assessment. Window Film Kits EPI 1 Assumption based on the unlikeliness that the same film would be removed and reapplied every year without it being dama...
AI summary The document discusses the effective useful life (EUL) of window film kits under the 2024-2025 DSM Measure Assessment, noting assumptions about the unlikelihood of repeated removal and reapplication without damage or replacement.
- Source: This value was drawn from Table 59 [55](#page-123-4) of the 2024 Existing Residential Evaluation. Measure Tracked EUL [years] Evaluated EUL [years] Measures Modelled in HOT2000 (i.e. Heat Pumps and Building Envelope Measures) 20....
AI summary The document provides data on the evaluated and tracked energy use life (EUL) for various energy efficiency measures, including heat pumps, solar PV, and building envelope improvements. A net-to-gross value of 0.84 is reported in section 4.8.4.
Source: This value was drawn from Table 53[56](#page-127-1) of the 2024 Residential DSM Measure Assessment. Parameter Green He eat, ASFH HEA MHEEP Reference Measure Description and Ide ntification ' 1.11 Measure Mini-split heat pumps for h...
AI summary This table from the 2024 Residential DSM Measure Assessment outlines parameters for various residential energy efficiency measures, including mini-split heat pumps, with details on installation rates, energy savings, and peak demand savings. The table also references subsections for further information.
20 58 2024 Existing Residential Evaluation, Effective Useful Life, Table 19: Tracked and Evaluated 2024 ASFH Equivalent EUL Values, page 65 (PDF 269/1442) Measure Tracked Equivalent EUL [years] Evaluated Equivalent EUL [years] Building Env...
AI summary The document presents a table comparing tracked and evaluated Equivalent Useful Life (EUL) values for building envelope and space heating equipment in 2024. It also references the 'Net to Gross' section with a value of 1.0, indicating a specific methodology or calculation used in the evaluation process.
- Source: This value was drawn from Table 53[59](#page-137-3) 20 of the 2024 Residential DSM Measure Assessment. 59 2024-2025 DSM Measurement Assessment - Residential, Table 53: Mini-split Heat Pump Measure Summary, page 55 (PDF 72/159) Ta...
AI summary This table from the 2024 Residential DSM Measure Assessment provides a summary of the Mini-split Heat Pump Measure, including parameters such as installation rate, energy savings, and peak demand savings. It references subsections for detailed calculations and assumptions.
- Source: This value was drawn from Table 53[61](#page-142-3) 8 of the 2024 Residential DSM Measure Assessment. 61 2024-2025 DSM Measurement Assessment - Residential, Table 53: Mini-split Heat Pump Measure Summary, page 55 (PDF 72/159) Tab...
AI summary The text discusses the assessment of mini-split heat pumps as a residential demand-side management (DSM) measure, including installation rates, energy savings parameters, and peak demand savings calculations. It references a table and subsections in the 2024 Residential DSM Measure Assessment.
3 4.14.3 MEASURE LIFE 4 Value: 10 Years 5 Source: This value was drawn from Table 72 of the 2025 DSM Measure Assessment, shown above. 6 - 4.14.4 NET TO GROSS - Value: 1.0 - Source: This value was drawn from Table 32 of the 2024 Existing Re...
AI summary The document discusses the 10-year life value of a measure, energy savings calculations for smart thermostats in electrical heating systems, and the methodology used to determine heating consumption savings based on thermostat types. The savings calculation uses a formula and references the 2025 Illinois TRM for the 10.2% heating consumption savings value.
4.15.6.2 Coincident Peak Demand Savings (kW) Value: 0.000 Source: This is the deemed unitary peak demand savings value for the Smart Thermostat for Electrical Heating Systems Measure[71](#page-155-1) in the 2025 Measure Assessment. Details...
AI summary The document discusses the deemed unitary peak demand savings value of 0.000 for the Smart Thermostat for Electrical Heating Systems Measure in the 2025 Measure Assessment. It also outlines details about Outdoor Heavy Duty Timers under the Instant Savings program, including measure identifiers, program components, measure life, net-to-gross ratios, and incremental costs.
5. APPENDIX A – BLANK MEASURE TEMPLATE - 5.1 MEASURE ID COMMON MEASURE NAME - Introductory text explaining the measure. - 5.1.1 MEASURE IDENTIFIERS & DEFINING CHARACTERISTICS Measure ID (Plan) Measure ID (Incremental Cost) Common Measure N...
AI summary This section presents a blank measure template used in regulatory proceedings, outlining key fields such as measure identifiers, life, net-to-gross, incremental cost, and energy savings. It provides a structured format for input development and transparency in measure evaluation.