Topic:"Homewarming" in M12780

2.2.4 LOW-INCOME AND EQUITY ENERGY SAVINGS The performance target of energy savings applicable to E1's dedicated low-income and equity program components (i.e., Affordable Multifamily Housing, Affordable Single-family Homes, and the Mi'kma...

AI summary E1's low-income and equity energy savings programs faced challenges in meeting 2023 targets due to capacity constraints and software modeling updates. Adjustments in 2024 and 2025, including increased participation and process improvements, led to progress toward the 2023–2026 performance target, with expectations to meet it by 2026.

sidential program components also continue to see reduced energy savings, resulting from two billing analyses conducted during the 2024 1 3 4 5 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 - 1 DSM evaluation. The Home Energy Assessment billin...

AI summary Residential energy programs in Nova Scotia face reduced savings due to updated billing analyses (Home Energy Assessment and Green Heat), impacting heat pump efficiency. E1 shifts investments to BNI Demand Response and maintains residential demand response levels. Solar-PV supports Mi'kmaw communities through energy efficiency initiatives.

1 Table 27: 2027–2031 Existing Residential Low-Income and Equity Performance Indicators Year Investment ($ million) First-Year Energy Savings (GWh) Lifetime Energy Savings (GWh) Peak Demand Savings (MW) Participation (homes) Participation...

AI summary Table 27 outlines projected residential low-income and equity performance indicators from 2027–2031, detailing investments, energy savings, and participation metrics across programs like Affordable Single-family Homes and Mi'kmaw Home Energy Efficiency Projects. Total participation spans 2,735 homes, 73,904 products, and 595 projects, with energy savings declining slightly over time.

PERFORMANCE REQUIREMENTS - I. UARBNSEB-APPROVED PERFORMANCE TARGETS, THRESHOLDS, AND INDICATORS - a) Performance Targets and Thresholds: - Performance Targets are set over the three five year contract period, rather than annually. - ii. Ef...

AI summary Performance targets for EfficiencyOne (E1) are set over three five-year contract periods, requiring 90% achievement of metrics like energy savings, peak demand reduction, and solar-PV generation. Non-compliance triggers regulatory action, with the Nova Scotia Energy Board (NSEB) determining remedies. Targets include specific programs for affordable housing and Mi'kmaw communities.

2.2 2025 Participation Result[s](#page-11-0) - [Table 2](#page-11-0) presents E1's 2025 participation results. The table provides a comparison of 2025 - participation results to those modelled in the 2025 Plan and the four-year Plan period...

AI summary E1's 2025 participation results show mixed outcomes compared to the 2025 Plan. Higher participation occurred in Instant Savings, Affordable Homes programs, and Business Energy Rebates due to retailer sales, faster project completion, and rebate promotions. Lower participation was observed in Efficient Product Installation (phasing out lighting measures), Green Heat (ended in 2025), and Demand Response (unpursued pathways). The Custom program exceeded energy savings despite lower participation.

- Affordable Single-family Homes' unit cost was lower than the 2025 Plan, as the energy savings were higher than expected, driven primarily by increased participation; and costs were lower, in part due to the transition in 2025 to managing...

AI summary The 2025 unit costs for DSM programs show mixed results: Affordable Single-family Homes had lower costs due to higher energy savings and project transitions, while Efficient Product Installation and Green Heat exceeded the 2025 Plan due to cost shifts and reduced savings. Home Energy Assessment costs were lower due to grant incentives. Factors like heating source splits and program adjustments influenced outcomes.

- o Residential Behaviour, Custom, Strategic Energy Management, the Application Rebates service of Business Energy Rebates, Residential Demand Response, and BNI Demand Response received comprehensive impact evaluations. - o Appliance Retir...

AI summary The 2025 evaluation activities include comprehensive and condensed impact evaluations for various energy programs, a market evaluation for Business Energy Rebates' Instant Rebates, a process evaluation for Residential Demand Response, and updates to the Measure Assessment document. Evaluations involve surveys, interviews, and jurisdictional scans to assess program effectiveness and market conditions.

Program Components - Appliance Retirement retires old, inefficient household appliances (e.g., refrigerators, freezers, room air conditioners) by offering free appliance pick-up from homes, proper recycling, and a financial incentive. The...

AI summary The Appliance Retirement program retired inefficient appliances until January 2025, offering incentives and recycling. Instant Savings provides rebates for energy-efficient purchases. Both programs aim to improve energy efficiency and reduce consumption.

2 4.2.2 Existing Residential - 3 The Existing Residential program consists of the following program components: - 4 Affordable Multifamily Housing; - 5 Affordable Single-family Homes; - 6 Efficient Product Installation; - 7 Green Heat; - 8...

AI summary The Existing Residential program includes components such as Affordable Multifamily Housing, Efficient Product Installation, and Green Heat. It references the 2025 DSM Programs Evaluation Reports, Final DSM Reports, and the Residential Efficient Product Rebates Program.

Affordable Single-family Homes - Affordable Single-family Homes more than doubled the energy and demand savings targets set out for the program component in the 2025 Plan as Approved, achieving 6.1 GWh in energy savings and 2.3 MW in deman...

AI summary The Affordable Single-family Homes program exceeded 2025 energy and demand savings targets (6.1 GWh and 2.3 MW), driven by improved project management and contractor collaboration. Participant completions increased due to streamlined processes, and backlog prioritization addressed long-waiting applicants.

2 4.5 Low-Income, Diverse, Underserved Communities - 3 In 2025, E1 updated its assumptions and estimation methodology for calculating impacts from - 4 E1's dedicated program components (Affordable Multifamily Housing, Affordable Single-Fam...

AI summary E1 updated its methodology for calculating low-income and equity impacts from its DSM programs in 2025. Dedicated programs like Affordable Multifamily Housing and the Mi'kmaw Home Energy Efficiency Project exclusively serve low-income communities. Non-targeted programs saw changes, including the Appliance Retirement program's end and revised assumptions for Business Energy Rebates. The methodology was filed with E1's 2026 DSM Extension Application.

4.5.1 Performance Target For the 2023-2026 Plan as Approved, the NSEB established a Performance Target of 19.8 GWh for cumulative annual energy savings applicable to Affordable Single-family Homes, Affordable Multifamily Housing, and Mi'km...

AI summary The NSEB set a 19.8 GWh energy savings target for the 2023-2026 Plan. E1 exceeded its 2025 target for Affordable Single-family Homes but fell short in Affordable Multifamily and Mi'kmaw projects, though overall targets were met. E1 forecasts achieving the 19.8 GWh cumulative target by 2026. Table 12 details 2025 results.

Innovation activities in 2025 included: - The deep retrofit navigator pilot concluded in Q2, with all participants completing their upgrades and final paperwork. The aim of the pilot, conducted in partnership with the Halifax Regional Muni...

AI summary In 2025, Nova Scotia launched multiple innovation pilots: a deep retrofit navigator pilot with HRM, a heat pump water heater market transformation pilot, a load flexibility demand response pilot, and research on mixed electric heating control solutions. Pilots highlighted challenges like cost and time, while emphasizing navigators' role in retrofit accessibility and exploring new demand response event types. E1 also installed monitoring systems to improve heat pump efficiency.

ATTACHMENT 2: EVALUATOR AND VERIFIER RECOMMENDATION UPDATES Table 1: Update on Implementation of 2022-2023 Evaluation Recommendations Table 2: Update on Implementation of 2024 Evaluation Recommendations Table 3: Update on Implementation of...

AI summary Attachment 2 provides updates on the implementation of evaluation and verification recommendations from 2021-2023 and 2024, organized into four tables. It outlines progress on addressing prior recommendations and new ones for 2024, though specific details are not included in the provided text.

Demand-side Management Measure Assessment Document The impact evaluation scope for 2025 also included an update of the Demand-side Management Measure Assessment (DSM MA) document. The DSM MA was updated to include new products added to pro...

AI summary The 2025 update to the DSM MA document focused on aligning with updated program offerings, removing outdated products (e.g., lighting from Instant Savings), revising algorithms for residential and commercial measures, and correcting technical inconsistencies. Annual adjustment ratios were also updated. Key changes included additions like smart thermostat load control and removals such as specific LED fixtures and heat pump water heaters.

Table 3: 2025 Interviews Completed Program Component 1 Program Manager/ E1 Staff/Business Development Manager Service Providers/ Distributors/Retailers/Builders Participants Program Manager in Other Jurisdictions Residential Appliance Reti...

AI summary Table 3 outlines the number of interviews conducted in 2025 for various program components, including Residential, Business Energy Rebates, and Demand Response. The data indicates the involvement of program managers, service providers, participants, and managers from other jurisdictions.

Existing Residential In 2025, the net electrical energy savings for Existing Residential reached 35.274 GWh at the generator, while the net peak demand savings amounted to 9.584 MW at the generator. Existing Residential is comprised of Aff...

AI summary In 2025, Existing Residential programs achieved 35.274 GWh net electrical energy savings and 9.584 MW peak demand savings. The programs include Affordable Multifamily Housing, Affordable Single-family Homes, Efficient Product Installation, Green Heat, Home Energy Assessment, Mi'kmaw Home Energy Efficiency Project, and Residential Behaviour.

Affordable Single-family Homes - › ASFH achieved 6.135 GWh in net electrical energy savings and 2.338 MW in net peak demand savings at the generator in 2025, thus exceeding the planned electrical energy and peak demand savings targets by 1...

AI summary ASFH exceeded 2025 energy savings targets by 114% (6.135 GWh) and 183% (2.338 MW) due to increased participation (1,920 homes, +59% YoY). EPI underperformed targets by 46% (7.300 GWh) and 68% (0.509 MW) due to decreased participation (-7.5%) and measure retirements, though savings realization rates reached 99-100% post-NTGR recalibration.

Table 8: 2025 Evaluated Net Lifetime Electrical Energy Savings at the Generator DSM Program Program Component Annual Net Electrical Energy Savings (GWh) Lifetime Net Electrical En ergy Savings (GWh) Weighted Average EUL (years) Share of An...

AI summary Table 8 presents the 2025 evaluated net lifetime electrical energy savings at the generator for various DSM programs, including appliance retirement, efficient product rebates, and home energy assessments. The table highlights the contribution of residential and BNI programs to annual and lifetime energy savings, with the residential subtotal contributing 36% of annual and 45% of lifetime savings, and BNI programs contributing 64% of annual and 55% of lifetime savings.

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.

EXECUTIVE SUMMARY This report presents the 2025 demand-side management (DSM) results of the Existing Residential program administered by EfficiencyOne (E1). This program is comprised of seven components: (1) Affordable Multifamily Housing...

AI summary This report details the 2025 demand-side management (DSM) outcomes for EfficiencyOne's Existing Residential program, which includes components like Affordable Multifamily Housing, Efficient Product Installation, and Home Energy Assessments. The program promotes energy efficiency through financial incentives and direct installations in residential and affordable housing sectors.

5 ASFH Overview This section describes the Affordable Single-family Homes (ASFH) program component, follows up on past evaluation recommendations, and provides an overview of participation history.

AI summary This section outlines the Affordable Single-family Homes (ASFH) program, addresses past evaluation recommendations, and summarizes participation history. It serves as an overview of the program's structure and implementation progress.

5.1 ASFH Description ASFH provides energy efficient retrofits and heat pump installations to income-qualified Nova Scotian owners of both electrically heated and non-electrically heated homes at no cost to participants. The program compone...

AI summary ASFH (Affordable Single-family Homes) offers no-cost energy retrofits and heat pump installations to income-qualified Nova Scotian homeowners. The program, marketed as HomeWarming, includes insulation, draft-proofing, and moisture management. E1 (EfficiencyOne) now manages the program, introducing a heat pump-only stream for past participants starting in 2023.

7.2 Gross Savings For ASFH, the gross savings associated with building envelope and heat pump measures are calculated based on pre-retrofit and post-retrofit HOT2000 simulations, while the gross savings associated with smart thermostats ar...

AI summary The section outlines methodology for calculating gross savings for Affordable Single-family Homes (ASFH), including simulation approaches for building envelope and heat pump measures, unitary values for smart thermostats, and retroactive adjustments to non-modelled heat pump calculations post-2024 DSM evaluation. The Evaluator applied updated methods retroactively from April 2024, affecting reported savings.

7.2.1 Electrical Energy Savings For ASFH, electrical energy savings are calculated based on HOT2000 simulation results adjusted with billing analysis results and unitary savings values for prescriptive measures, as demonstrated in the equa...

AI summary Electrical energy savings for Affordable Single-family Homes (ASFH) are calculated using HOT2000 simulations adjusted with billing analysis and unitary savings values for prescriptive measures. The methodology combines simulation results with real-world data to estimate savings.

Where: - › and correspond to the modelled energy consumption levels obtained in HOT2000 during the pre-retrofit (D) and post-retrofit (E) assessments respectively. Since modelled energy consumption levels were not directly available in the...

AI summary The text outlines energy savings methodology using EnerGuide ratings for pre- and post-retrofit assessments, adjustment ratios (ARs) derived from 2024 billing analyses, and calculations involving prescriptive measures under Affordable Single-family Homes (ASFH). It emphasizes modelled energy consumption and the role of Delivery Agents (DAs) in estimating space heating.

Non-modelled Energy Savings Smart thermostats are not modelled in HOT2000. Instead, electrical energy savings are calculated based on unitary energy savings values from the 2025 Demand-side Management Measure Assessment (DSM MA),[10](#page...

AI summary Non-modelled energy savings for smart thermostats and heat pumps are calculated using the 2025 DSM MA and 2024 Green Heat analysis. Savings are allocated between electrical and non-electrical sources based on electric space heating percentages in ASFH programs, with no modifications to unitary savings values in the 2025 DSM MA.

8 ASFH Key Findings and Recommendations As previously mentioned, the main objectives of the 2025 ASFH evaluation were as follows: › Calculate gross and net ASFH results, namely electrical first-year and lifetime energy savings, peak demand...

AI summary The 2025 ASFH program exceeded electrical energy and peak demand savings targets by 114% and 183%, respectively. Participation grew by 59% compared to 2024, with 1,920 homes enrolled. Evaluator results aligned closely with E1's tracking, differing by only 1% due to unclaimed 2024 savings from non-modelled heat pumps.

Affordable Single-family Homes Appendix III ASFH: Tracking Sheet Audit Appendix IV ASFH: Results from EPI Measures Implemented Under the Program Component Appendix V ASFH: 2025 Recommendations

AI summary The document outlines appendices related to the Affordable Single-family Homes (ASFH) program, including audit tracking sheets, results from Efficient Product Installation (EPI) measures, and 2025 recommendations. These components support program evaluation and implementation tracking.

APPENDIX V ASFH 2025 Recommendations The Evaluator made no specific recommendation as part of the 2025 ASFH evaluation.

AI summary The Evaluator did not provide specific recommendations as part of the 2025 Affordable Single-family Homes (ASFH) evaluation, indicating that no actionable measures were proposed for this initiative.

Request IR-06: The Affordable Single Family Homes program supplies free upgrades to building envelope of Single Family Homes for qualifying homeowners, with EfficiencyOne arranging the contractors to do the work. This is an excellent progr...

AI summary The request asks why the Affordable Multi Family Housing Program (AMHP) doesn't offer free building envelope upgrades for tenants like the Affordable Single Family Homes (ASFH) program. The response explains AMHP provides 80% cost incentives to landlords with rent affordability conditions, and EfficiencyOne (E1) proposes higher demand-side-management (DSM) incentives in its Preferred Plan. E1 remains open to enhancing tenant support.

ine-files/Focus-on-Energy-2024-TRM.pdf) for measure characterization details. E1 used the annual energy savings, peak demand savings, and effective useful life values from this resource. information. A net-to-gross (NTGR) ratio of 1.0 was...

AI summary The analysis assumes a net-to-gross ratio (NTGR) of 1.0 for a heat pump measure targeting low-income participants, consistent with E1's DSM Plan. Costs are based on 2025 procurement pricing for heat pump services under the Affordable Single-family Homes program. The measure focuses on equity-seeking participants who previously received heat pumps through E1's initiatives.

Table 1: E1's Programs Delivered by Third Parties Affordable Multifamily Housing ✔ Efficient Product Installation ✔ Home Energy Assessment ✔ HomeWarming ✔ Instant Savings ✔ Mi'kmaw Home Energy Efficiency Project ✔ Strategic Energy Manageme...

AI summary Table 1 lists E1's programs delivered by third parties, including energy efficiency and demand response initiatives. E1's procurement activities are governed by a biennially reviewed procurement policy approved by E1's Board of Directors.

10 Q. DO YOU HAVE OTHER CONCERNS ABOUT HOW LOW-INCOME 11 PROGRAMS ARE IMPLEMENTED? 12 A. Yes. Low-income participants often face barriers that prevent a home from being 13 weatherized. E1 confirms that customers in the Affordable Multifami...

AI summary The witness highlights concerns about the implementation of low-income programs, noting that barriers such as mold, asbestos, and electrical upgrades prevent weatherization in older buildings. E1 does not track the incidence of these barriers, making it difficult to assess how many low-income customers are turned away.

INFORMATION REQUEST 5 The Affordable Single Family Homes program supplies free upgrades to building envelope of Single Family Homes for qualifying homeowners, with EfficiencyOne arranging the contractors to do the work. This is an excellen...

AI summary The Affordable Single Family Homes program provides free building envelope upgrades for qualifying homeowners via EfficiencyOne. The document argues that the Affordable Multi Family Housing Program should similarly offer free upgrades for low-income tenants paying their own utilities, as recommended by the Affordable Energy Coalition. EfficiencyOne has not implemented this change, prompting a question about its inclusion in the 5-year plan.

INFORMATION REQUEST 6 Plug in solar has become a widely popular technology that reduces electricity use and costs for smaller households such as apartment dwellers. Roughly 50% of low income households are apartment dwellers. Both spending...

AI summary The text discusses the potential of 'plug-in solar' technology to reduce electricity costs for apartment dwellers, noting that 50% of low-income households are in multi-family housing. It highlights lower-than-expected spending/savings in the Affordable Multi Family Housing Program compared to the Single Family Program and asks if EfficiencyOne plans to explore this technology in its 5-year plan for the former program.