E-22024 DSM Programs Evaluation Reports
74 passages
Table 6: Comparison of 2024 Evaluated and Tracked Peak Demand Savings at the Generator a Program Component Tracked Results Evaluated Results Difference DSM Program Annual Gross Savings (MW) Annual Net Savings (MW) Available Capacity (MW) A...
AI summary Table 6 compares the evaluated and tracked peak demand savings at the generator for various programs in 2024. It shows results for residential, BNI, and demand response programs, highlighting differences in net savings and available capacity, along with net realization rates for each component.
3.1.1 Residential DSM Programs
AI summary The section outlines residential demand-side management (DSM) programs aimed at enhancing energy efficiency in residential sectors through initiatives like appliance retirement, home energy assessments, and incentives for efficient technologies such as heat pumps and LED lighting.
Existing Residential In 2024, the net electrical energy savings for Existing Residential reached 53.331 GWh at the generator, while the net peak demand savings amounted to 14.229 MW at the generator. Existing Residential is comprised of Af...
AI summary In 2024, Existing Residential programs achieved 53.331 GWh of net electrical energy savings and 14.229 MW of peak demand savings. The category includes Affordable Multifamily Housing, Affordable Single-family Homes, Efficient Product Installation, Green Heat, Home Energy Assessment, the Mi'kmaw Home Energy Efficiency Project, and Residential Behaviour. Program component results are detailed below.
Green Heat - › Green Heat participation levels decreased by 21% compared to 2023 levels, particularly for MSHPs and demand reduction measures for which participation decreased by 36% and 19% respectively. - › The net evaluated electrical e...
AI summary Green Heat participation dropped 21% from 2023, with MSHPs and demand reduction measures declining 36% and 19% respectively. Net savings evaluations were lower than E1's tracking due to 2024 billing analysis updates on unitary savings for MSHPs and biomass measures.
› More product information would be helpful for participants. Some participants say they did not receive information about the products installed and some still have doubts about how to operate and maintain their new equipment (especially...
AI summary Participants report insufficient information about installed products, particularly heat pumps, leading to operational and maintenance doubts. Contractors and DAs address many questions, but the lack of clarity may hinder proper use and energy savings.
Green Heat Findings and Recommendations 2024 Green Heat - Finding: Green Heat fell short of its net savings targets, achieving 24% and 55% of its electrical energy and peak demand targets respectively. 2024 Green Heat-Finding: Green Heat p...
AI summary The 2024 Green Heat program underperformed, achieving only 24% and 55% of its energy and peak demand targets. Participation dropped due to the CGH Grant's launch, with low savings rates (35% and 71%) for MSHPs and biomass measures. Nil electrical savings were found for some households, and a recommendation to remove wood/pellet fireplace inserts is proposed.
3.3.5 Participant Questions and Concerns Participants' questions to EAs during the initial energy audit visit vary based on their level of understanding of AMH, their knowledge of their building's construction, and/or their interest in the...
AI summary Participants ask Energy Auditors about AMH rebates, next steps, and building operations, with heating systems and insulation being the most common topics. Questions include backup heating, insulation costs, and electrical system compatibility.
In November 2024, Narrative Research conducted five interviews with heat pump contractors involved in ASFH to obtain their perspectives on program delivery. The guide used for the contractor interviews is presented in Appendix IX.
AI summary In November 2024, Narrative Research conducted five interviews with heat pump contractors involved in ASFH to gain their perspectives on program delivery. The interview guide is included in Appendix IX.
Heat Pump Only Participants As mentioned in the program component description (Subsection [6.1)](#page-40-0) above, since January 2023, past participants of HomeWarming can apply for the heat pump only measure, which excludes an energy ass...
AI summary Heat Pump Only Participants in the HomeWarming program (since 2023) receive heat pumps without energy assessments or building upgrades. E1 directly contacts past participants, and contractors handle installations. Certain interview questions were omitted as they were irrelevant to this streamlined measure.
Heat Pump Contractors Heat pump contractors began their direct involvement in the heat pump only path of the program component in January 2023. Overall, 43 contractors support heat pump only participants. According to E1, this program comp...
AI summary Heat pump contractors started participating in the heat pump-only program path in January 2023, with 43 contractors supporting ASFH. E1 notes challenges in ramping up due to high demand and varying contractor knowledge. The analysis covers motivations, satisfaction, challenges, and program improvements.
8.1.3 Participant Questions and Concerns A majority of modelled participants (63%) does not have questions about energy efficiency or the technologies installed through ASFH. For the minority that does, questions tend to revolve around how...
AI summary 63% of ASFH participants have no questions about energy efficiency, but those who do seek guidance on operating heat pumps, maintenance, and costs. DAs note challenges in explaining systems to elderly participants and report a preference for phone-based support. Contractors provide manuals, but understanding remains an issue.
8.2 Heat Pump Only Path
AI summary The 'Heat Pump Only Path' section outlines a regulatory approach focusing exclusively on heat pump technologies for energy efficiency and emissions reduction in Nova Scotia. It likely addresses program design, eligibility, and integration within broader energy policies.
8.2.1 Heat Pump Only Participants
AI summary The section '8.2.1 Heat Pump Only Participants' outlines considerations specific to participants utilizing heat pump technology within regulatory proceedings, potentially involving affordability, program structures, and energy efficiency initiatives.
8.2.2 Heat Pump Contractors
AI summary The section '8.2.2 Heat Pump Contractors' outlines considerations related to heat pump contractors but does not provide specific details or discussions.
8.2.3 Participant Questions and Concerns A majority of heat pump participants (70%) does not have questions about energy efficiency or the heat pump installed through ASFH. As with modelled participants, questions tend to concern heat pump...
AI summary 70% of heat pump participants (via ASFH) have no questions about energy efficiency, but 30% lack operational/maintenance knowledge. Contractors provide manuals, warranty info, and E1 materials. Participants prefer phone support for follow-up questions. E1 coordinates lead distribution to contractors.
8.4 DA and Heat Pump Contractor Suggestions for Improvements DAs and heat pump contractors make the following suggestions for program improvements: - › Simplify/streamline the administrative process throughout delivery and improve the user...
AI summary DAs and heat pump contractors suggest streamlining administrative processes, improving CIS usability, providing training, enhancing communication, raising ASFH program awareness, and improving grassroots education. Recommendations include automation, batch uploads, simplified invoicing, technical training via HRAI, participant portals, and leveraging MLAs for outreach.
9.2 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 of replaced old appliances through t...
AI summary The text outlines methods for calculating gross savings for Affordable Single-family Homes (ASFH) through HOT2000 simulations, E1 Appliance Retirement program unitary savings, and Green Heat calculations for heat pumps. It focuses on 2024 methodology for assessing energy savings from retrofits and appliance replacements.
2024 ASFH-Finding: More product information would be helpful for participants. Some participants say they did not receive information about the products installed and some still have doubts about how to operate and maintain their new equip...
AI summary Participants in the ASFH program report insufficient product information, leading to confusion about heat pump operation and maintenance. Contractors and DAs address this post-installation, but concerns remain. Recommendations include providing clear information, checklists, and leave-behind materials to ensure proper equipment use and maximize energy savings.
2024 EPI-Finding: Installation rates for most products remained relatively stable, while those of smart thermostats for MSHPs were reduced. For the most part, installation rates measured during the 2024 on-site visits varied by less than 1...
AI summary Installation rates for most products under EPI remained stable (±10% vs. 2023), but smart thermostats for MSHPs dropped from 100% to 84% due to participant dissatisfaction and disconnections. The recommendation emphasizes improving engagement through follow-ups, installer education, and better product communication.
17 Green Heat Overview This section describes Green Heat, follows up on past evaluation recommendations, and provides an overview of participation history.
AI summary This section outlines the Green Heat program, addresses past evaluation recommendations, and reviews participation history, highlighting its role in energy efficiency and greenhouse gas reduction initiatives in Nova Scotia.
18 Green Heat Evaluation Approach The 2024 Green Heat evaluation comprised a comprehensive impact evaluation. The main objectives of the evaluation were as follows: › Calculate gross and net results, namely electrical first-year and lifeti...
AI summary The 2024 Green Heat evaluation aimed to calculate gross and net results, including energy savings, peak demand savings, and avoided GHG emissions. Research questions were identified to achieve these objectives, with methods detailed in a table.
19 Green Heat Impact Evaluation The objectives of the 2024 Green Heat impact evaluation were to determine gross and net electrical energy and peak demand savings, annually avoided GHG emissions, as well as effective useful life (EUL) value...
AI summary The 2024 Green Heat Impact Evaluation aims to assess gross and net electrical energy savings, peak demand reductions, annual GHG emission avoidance, effective useful life (EUL) values, and lifetime energy savings from the program.
Table 44: 2024 Green Heat Tracked and Evaluated Unitary Energy Savings Measure Tracked Savings Evaluated Savings Heat Pumps MSHPs – Fully Electrically Heated 0.179 kWh/Btu/h 0.0855 kWh/Btu/h MSHPs – Mainly Electrically Heated 0.060 kWh/Btu...
AI summary Table 44 presents energy savings data for various heating measures in 2024, including heat pumps and biomass systems. It compares tracked and evaluated savings, highlighting differences in energy efficiency between different heating technologies and baselines.
Table 47: Evaluated 2024 Green Heat GHG Gross Emission Reductions Total Gross Energy Savings – at the Generator (GWh) 1.651 Nova Scotia-specific GHG Emissions Factor for Electricity Production (tonnes of CO2 eq/GWh) 472.2 Gross Annual GHG...
AI summary Table 47 evaluates the 2024 Green Heat GHG gross emission reductions, showing 780 tonnes of CO2 eq reduced annually through energy savings of 1.651 GWh, using Nova Scotia's specific GHG emissions factor of 472.2 tonnes of CO2 eq/GWh.
Net savings are defined as the energy use reductions specifically attributable to Green Heat. Net savings were estimated by applying the NTGRs listed above to the evaluated gross savings using the following equation. Net Savings = Gross Sa...
AI summary Net savings from Green Heat are calculated using the Net Total Gross Savings (NTGR) applied to gross savings, resulting in 412 tonnes of CO2 eq in annual GHG emission reductions. This equation is used for both electrical energy and peak demand savings.
2024 Green Heat - Finding: Green Heat participation decreased for the third consecutive year. Green Heat participation levels decreased by 21% compared to 2023 levels, particularly for MSHPs (19% reduction) and demand reduction measures (3...
AI summary Green Heat participation fell 21% in 2024, the third consecutive year of decline, attributed to federal CGH Grant competition. Evaluation showed 35% net energy savings realization, with MSHPs and biomass measures underperforming. Recommends removing wood/pellet inserts due to negligible savings.
27.2.2 Peak Demand Savings Peak demand savings correspond to the demand savings that coincide in time with the peak demand period of the electricity system. The projected electricity peak demand period in Nova Scotia is between 5 p.m. and...
AI summary Peak demand savings in Nova Scotia are calculated using a 0.283 MW/GWh ratio from Navigant's 2016-2018 DSM Plan, except for heat pumps, which use updated 2024 unitary values (0.148 W/(Btu/hr)). The Evaluator validated Navigant's method, while MHEEP's savings are tracked via appliance replacements and updated in the 2024-2025 DSM MA.
Table 87: Overall 2024 Existing Residential Participation and Evaluated Savings Particip ation Level Gross Savings NTGR Net S Savings Value Unit Value Unit Value Value Unit AMH • Energy Savings 83 Projects 1.159 GWh 1.00 1.159 GWh Lifetime...
AI summary Table 87 presents data on residential participation and evaluated savings for 2024, including energy savings, GHG emission reductions, and EUL for various programs like AMH, ASFH, EPI, Green Heat, HEA, MHEEP, and Residential Behaviour. The table also includes net savings ratios (NTGR) for each program component.
[RECORD FROM DATABASE: MEASURE TYPE] - 1. [IF MEASURE CATEGORY = HP-ONLY] Heat pump participants [CHECK QUOTA AND CONTINUE] - 2. [IF MEASURE CATEGORY = MODELLED] Modelled participants (participant had a home energy assessment) [CHECK QUOTA...
AI summary The document outlines conditional processing rules for measure types in a regulatory proceeding, distinguishing between heat pump participants and modelled participants (those with home energy assessments). It includes a database check for the Oil to Heat Pump Affordability (OHPA) program, though no specific arguments or entities are explicitly discussed.
B. Respondent Involvement in the Program - B1. To begin, what is your title, and could you briefly describe your company and your role and responsibilities? - B2. How long have you been completing heat pump projects for Efficiency Nova Sco...
AI summary The section outlines questions posed to a respondent regarding their role in the HomeWarming program, duration of involvement with Efficiency Nova Scotia, and annual project volume. It focuses on the respondent's participation in heat pump installations under the program.
C. Program Strengths and Challenges Now, I would like to discuss the HomeWarming program – heat pump delivery process with you. In general, we understand that a project includes the following steps: [READ]The contractor receives informatio...
AI summary The HomeWarming program's heat pump delivery process involves contractor coordination with Efficiency Nova Scotia (ENS) for participant outreach, sizing, installation, and reimbursement. The text seeks confirmation of the process and feedback on its effectiveness, challenges, and potential improvements from contractors and participants.
- (iv) What could be improved? Steps (a) Problems Faced by DAs (b) Working Well for DAs (c) Problems Faced by Participants (d) Working Well for Participants (e) What could be improved? ASK IF NOT COVERED 1 The contractor receives informati...
AI summary The document outlines the process for installing heat pumps under the Efficiency Nova Scotia HomeWarming program, including steps taken by contractors and Efficiency Nova Scotia, and mentions potential improvements and questions participants might have about heat pump technology.
Aspects of the Program Score 0 = Not at all satisfied 10 = Completely Satisfied Reason If 7 or less, please share the reason(s) for your score. a. The overall program /10 What could be improved? b. The selection of heat pumps eligible for...
AI summary The table outlines various aspects of a program related to heat pumps and Efficiency Nova Scotia, with each aspect rated on a scale from 0 to 10. It invites feedback on what could be improved, particularly in areas such as program effectiveness, product quality, communication, and data reporting.
B. Verification of Actions Taken The following questions concern "the energy efficiency upgrades" "the installation project" that you completed through your participation in in for the house located at - B1. "Were your energy efficiency up...
AI summary This document outlines a verification survey for energy efficiency upgrades and heat pump installations under Nova Scotia programs. It asks participants about renovations involving added floor area, heating previously unheated rooms, fireplace/wood stove usage changes, and heat pump installations, ensuring compliance with program requirements.
OVERALL % SAMPLE SIZE (#) 240 Yes 4% No 96% TABLE B2: Was your Green Heat installed as part of a renovation project that involved heating rooms that were previously not heated or were only minimally heated (for example, at a temperature lo...
AI summary This table presents survey data on the installation of Green Heat as part of renovation projects involving heating rooms previously not heated or minimally heated. Only 4% of respondents answered 'Yes,' while 96% answered 'No.'
OVERALL % SAMPLE SIZE (#) 240 Yes, the renovation project involved heating rooms that were previously not heated/were minimally heated 16% No, the renovation project did not involve heating rooms that were previously not heated/were minima...
AI summary The text presents survey data on heat pump installations and their impact on fireplace and wood stove usage, as well as the presence of air conditioners. The majority of respondents did not heat previously unheated rooms, and most did not have fireplaces or wood stoves. Usage of these heating methods decreased for some after energy efficiency upgrades.
For peak demand savings: - › The adjustment to the nominal heating capacity used for some mini-split heat pumps, based on values found in the NEEP Cold Climate Air Source Heat Pump Product list. - › The correction of NTGRs for all three-el...
AI summary Adjustments to mini-split heat pump heating capacity using NEEP data and corrections to NTGRs for three-element water heater and domestic hot water timer measures are discussed as part of peak demand savings initiatives.
APPENDIX XXIV Green Heat Detailed Methodology and Billing Analysis
AI summary Appendix XXIV outlines the methodology and billing analysis for the Green Heat initiative, focusing on energy efficiency programs, appliance retirement, and heat pump adoption in Nova Scotia. It includes technical details on cost recovery, program evaluation, and regulatory considerations for residential and commercial energy efficiency measures.
Use of Past Participant Survey Results Given the inconclusive results of 2023 billing analysis, it was hypothesized that some participants included in the billing analysis may have added heated floor area to their home around the same time...
AI summary The 2023 billing analysis for Green Heat had inconclusive results, possibly due to some participants adding heated floor area post-participation, increasing consumption. A survey was conducted to exclude such cases, but limited results made it incomplete.
MSHP Measures Table 2 presents the results of the billing analysis for the Green Heat MSHP measure. Treatment participants who mentioned adding heated floor area as part of their Green Heat renovation project were excluded from the analysi...
AI summary Table 2 provides the results of the billing analysis for the Green Heat MSHP measure, excluding participants who added heated floor area. Previous results from the 2017 evaluation are included for comparison.
Literature review To put the results of the billing analysis into perspective, the Evaluator conducted a literature review of recent billing analyses and metering studies performed in other jurisdictions for similar energy conservation mea...
AI summary The Evaluator reviewed literature on billing analyses and metering studies for energy conservation measures, finding no relevant studies on woodburning appliances. However, one billing analysis and two metering studies on MSHPs were identified as methodologically comparable to the current evaluation.
2024 Massachusetts and Connecticut Metering Study This metering study[4](#page-181-0) was conducted in 2024 and covers central heat pumps (CHPs), MSHPs, and ground source heat pumps (GSHPs) installed in Massachusetts and Connecticut betwee...
AI summary This 2024 study analyzes the performance of central heat pumps, mini-split heat pumps, and ground source heat pumps installed in Massachusetts and Connecticut between 2021 and 2022. It categorizes installations into full displacement and partial displacement types, with Green Heat installations typically falling into the latter. The study uses on-site data and presents results in kWh/tonne of installed capacity.
Figure 2: Retrofit Savings per Cold Climate Heat Pump Installed (Cadmus, 2017) Percent of MMBtu Provided by Existing Heating System Heating System Efficiency Assumptions Fuel Heat Content Assumptions Savings Units 7% COP of electric resist...
AI summary Figure 2 presents retrofit savings per cold climate heat pump installed, based on a 2017 Cadmus study. The Evaluator noted discrepancies in interpreting the savings data and consulted the study's author, who recommended using the ccHP consumption and heating capacity results instead for more accurate estimates.
Summary of Literature Review Findings The Evaluator reviewed the aforementioned three studies to compare and put into perspective the savings results of the 2024 Green Heat billing analysis. - › The 2024 billing analysis conducted in Orego...
AI summary The Evaluator compared the 2024 Green Heat billing analysis with studies from Oregon, Massachusetts/Connecticut, and Vermont. Results showed similar savings (1,032–1,075 kWh) except for Vermont’s higher savings (3x), attributed to different methodologies, higher-efficiency heat pumps, and early adopter behavior. Recent studies reinforce confidence in Green Heat’s findings.
This appendix summarizes all the recommendations made by the Evaluator as part of the 2024 Green Heat evaluation. Section Recommendations Executive Summary Recommendation #1: In light of their very low savings and considering their low upt...
AI summary This appendix summarizes recommendations from the 2024 Green Heat evaluation, including the suggestion to remove wood and pellet fireplace inserts from the Green Heat offer due to low savings and uptake.
Interactive Effects on Heat Pump Heating Since the interactive effects factors for electrical heating are based on a heating system efficiency of 100%, some adjustments are necessary for homes that use a heat pump as a primary heating syst...
AI summary The interactive effects factor for heat pump heating is adjusted from -58.0% to -32.2% by dividing by 1.8 (the COP of a standard mini-split heat pump with HSPF2 Region V of 6.0). This reflects the superior efficiency of heat pumps over 100% electrical heating systems as defined by Federal Energy Efficiency Regulations.
Interactive Effects on Heat Pump Cooling As for cases where cooling is provided by a heat pump, the Evaluator adjusted the cooling interactive effects by dividing the 22% value by the efficiency ratio of mini-split heat pumps and AC units...
AI summary The Evaluator adjusted cooling interactive effects by dividing a 22% value by the efficiency ratio (COP 3.5/2.5) of mini-split heat pumps and AC units, then multiplying by the conditioned home area ratio (100%/40%), resulting in a 6.4% interactive effects factor for cooling.
Peak Demand The Hydro-Québec report assumes that 10% of the heat is released through exterior walls and ceilings and does not contribute to interactive effects. Since the peak demand period occurs during the heating period when lighting an...
AI summary The Hydro-Québec report assumes 10% heat loss through exterior walls/ceilings in electrically heated homes, leading to a -90% interactive effects factor for peak demand savings. This factor also applies to heat pumps, assuming 100% efficiency during peak cold conditions when heating and lighting systems are active.
Single-family Homes Based on site visit results from the 2015 evaluation[48](#page-112-2) and accounting for the proportion of DHW insulation measures installed in conditioned spaces, the average number of months during which heating inter...
AI summary The analysis estimates that heating interactive effects in single-family homes occur for 3.8 months annually, with DHW insulation measures having minimal cooling impact. Heat loss assumptions and COP adjustments for heat pumps (dividing by 1.8) are applied to refine efficiency calculations based on Federal Energy Efficiency Regulations.
(3) Heat Pump Water Heaters
AI summary The document section titled '(3) Heat Pump Water Heaters' is introduced but lacks detailed content or discussion about HPWH programs, policies, or technical specifications in the provided text.
Table 52: Peak Demand-to-energy Ratios for Space Heating Measures Measure Peak Demand-to energy Ratio (W/kWh) Reference Mini-split Heat Pumps (MSHPs) - - Central Air-source Heat Pumps Ground-source Heat Pumps Wood and Pellet Stoves/Firepla...
AI summary Table 52 outlines peak demand-to-energy ratios for various space heating measures, including heat pumps, wood and pellet stoves, and air sealing products. The data includes references to studies and assumptions used in the analysis, such as the Navigant 2016-2018 DSM Plan.
(1) Mini-split Heat Pumps
AI summary The document section introduces the topic of Mini-split Heat Pumps (MSHPs) within a Nova Scotia regulatory proceeding, listing numerous acronyms related to energy efficiency programs, regulations, and technical terms. The focus appears to be on energy efficiency initiatives and terminology specific to heat pump technologies and regulatory frameworks.
Summary [Table](#page-136-4) 53 presents a summary of the values used to calculate mini-split heat pump (MSHP) savings. The detailed methodology follows.
AI summary Table 53 summarizes the values used to calculate mini-split heat pump (MSHP) savings, with the detailed methodology provided in the following sections.
Table 53: Mini-split Heat Pump Measure Summary Parameter Green Heat, ASFH HEA MHEEP Reference Measure Description and Identification Measure Mini-split heat pumps for high-efficiency space heating with direct installation (HEA, MHEEP) or r...
AI summary Table 53 provides a summary of mini-split heat pump measures, including parameters such as installation rate, effective useful life, and energy savings. It compares different programs like Green Heat, ASFH HEA, and MHEEP, and references subsections for detailed calculations.
Table 54: Adjustment Ratios for HEA and MHEEP Modelled Savings Scenario Adjustment Ratio A participant who registered with a heat pump 1.24 A participant who registered without a heat pump and who did not install one 0.58 A participant who...
AI summary Table 54 outlines adjustment ratios for HEA and MHEEP modelled savings, showing different scenarios based on heat pump registration and installation. The ratios vary significantly depending on whether a participant registered with or without a heat pump and whether installation occurred.
For Green Heat and HEA, the unitary peak demand unitary savings for MSHPs are calculated using the variables defined and listed in the equation and [Table](#page-137-3) 55 below. $$Peak\ Demand\ Savings_W = \frac{1{,}000}{3.412} \times HC_...
AI summary The text discusses the calculation of unitary peak demand savings for MSHPs using a specific formula involving variables such as HC_min, COP_base_min, and COP_ee_min, referencing a table for detailed variables.
Table 55: Unitary Peak Demand Savings Values for Mini-split Heat Pumps Variable Symbol Green Heat Reference Rated heating capacity of the new heat pump at outdoor air temperature of -15°C [kBtu/h] 𝐻𝐶𝑚𝑖𝑛 Specification data for each installe...
AI summary Table 55 provides unitary peak demand savings values for mini-split heat pumps, focusing on the rated heating capacity, coefficient of performance, and conversion factors. Peak demand savings are only claimed for households with fully electrically heated baselines, with no savings for mainly electrically heated baselines due to nil electrical energy savings.
(2) Central Air-source Heat Pumps
AI summary The section introduces Central Air-source Heat Pumps (CASHP) and lists numerous acronyms relevant to the regulatory proceeding. However, no detailed discussion or analysis of CASHP is provided in the text.
Table 57: Unitary Peak Demand Savings Values for Central Air-source Heat Pumps Variable Symbol Green Heat Reference Rated heating capacity of the new heat pump at outdoor air temperature of -15°C [Btu/h] 𝐻𝐶𝑚𝑖𝑛 26,261 Average specification...
AI summary Table 57 presents unitary peak demand savings values for central air-source heat pumps, including rated heating capacity, coefficient of performance for baseline and new heat pumps, and calculated peak demand savings. The data is sourced from the 2022 Green Heat tracking sheet and uses standard conversion factors.
(3) Ground-source Heat Pumps
AI summary Section heading introducing discussion on ground-source heat pumps, though no detailed content or analysis is provided in the text chunk.
The electrical unitary energy savings for GSHPs in Green Heat are calculated using the variables defined and listed in the equation and [Table](#page-141-1) 59 below. $$\begin{split} \textit{Energy Savings}_{\;kWh} &= \textit{Heating Savin...
AI summary The document outlines the calculation method for electrical unitary energy savings for Ground Source Heat Pumps (GSHPs) in the Green Heat program, using specific variables and equations, including heating and cooling savings or penalties based on performance factors and operational data.
Unitary Peak Demand Savings The unitary peak demand savings for GSHPs installed under Green Heat are established using the equation below. All variables from this equation are defined in [Table](#page-141-1) 59. Since standard MSHPs and CA...
AI summary The document outlines the calculation method for unitary peak demand savings for ground-source heat pumps (GSHPs) under the Green Heat program, using a formula involving COP (Coefficient of Performance) and DRF (Demand Response Factor). It notes that standard mini-split and central air-source heat pumps use electric resistance backup during peak periods, fixing a variable's value at 1.
Table 64: Unitary Peak Demand Savings Values for Wood and Pellet Boilers and Furnaces Green Heat Parameter Wood Furnace or Boiler with Electrical Baseline Pellet Furnace or Boiler with Electrical Baseline Wood Furnace or Boiler with ASHP B...
AI summary Table 64 presents unitary peak demand savings values for wood and pellet boilers and furnaces under different baseline scenarios. The table highlights the energy efficiency benefits of these heating systems, with values ranging from 7,660 to 7,750 watts. The section on installation rates likely discusses the rate at which these systems are being installed.
Table 76: EPI Smart Thermostat for MSHP Installation Rate Measure Description Installation Rate Margin of Error Reference Smart Thermostats for MSHPs 84% 12.3% 2024 EPI evaluation (on-site visits) (11) Advanced Learning Thermostat for Cent...
AI summary Table 76 presents the installation rate of EPI Smart Thermostats for Multi-Split Heat Pumps (MSHPs) at 84% with a margin of error of 12.3%, based on the 2024 EPI evaluation. This data provides insight into the adoption rate of smart thermostats for MSHP installations.
Table 135: EUL Values and Sources for Non-LED Lighting Residential Measures Measure Name Ground-source Heat Pumps Green Heat, HEA 25 Life expectancy estimated by the U.S. Department of Energy200 (up to 24 years for the inside component and...
AI summary Table 135 presents EUL values and sources for non-LED lighting residential measures, including ground-source heat pumps, wood stoves, pellet stoves, and wood furnaces. The data includes life expectancy estimates from various sources such as the U.S. Department of Energy and Natural Resources Canada.
200 Retrieved from [https://energy.gov/energysaver/heat-and-cool/heat-pump-systems/geothermal-heat-pumps#306534-tab-1.](https://energy.gov/energysaver/heat-and-cool/heat-pump-systems/geothermal-heat-pumps#306534-tab-1) 201 Retrieved from [...
AI summary The document provides data on the effective useful life (EUL) of various energy efficiency measures, including water heaters, heat pumps, and insulation. It references studies and reports from organizations such as Hydro-Québec, NREL, and the California Public Utilities Commission to support these estimates.
Table 136: Commercial Measure Assessment Change Log Change Type Section Description Date Update Lighting Measures For LED Linear Fixtures, LED Linear Lamps, LED Outdoor Fixtures, and LED Directional and Architectural Fixtures, the HOU for...
AI summary Table 136 outlines updates and new measures in commercial energy efficiency programs, including changes to lighting measures, occupancy sensors, LED nightlights, and the addition of horticultural lighting. It also includes updates to air-source heat pumps, water heating interactive effects, and various water heating efficiency measures, all effective March 19, 2025.
5.2.4 Pump Measures
AI summary The section '5.2.4 Pump Measures' outlines regulatory considerations for heat pump technologies, including efficiency standards, rebate programs, and compliance with energy codes like NECB 2020. It addresses implementation challenges, cost recovery, and performance metrics for heat pump adoption in residential and commercial sectors.
(4) Air-source Heat Pumps Less Than 65,000 Btu/h (excluding air-to-water)
AI summary The section focuses on air-source heat pumps with capacities below 65,000 Btu/h (excluding air-to-water models), likely addressing regulatory considerations, eligibility criteria, or program structures related to their deployment in Nova Scotia.
(6) Heat Pump Water Heaters
AI summary The document section titled '(6) Heat Pump Water Heaters' introduces a regulatory proceeding discussion focused on heat pump water heaters (HPWH) in Nova Scotia. It references relevant acronyms and contextual terms, though no detailed arguments or program specifics are provided in the excerpt.
The electrical unitary energy savings for heat pump water heaters are calculated based on the metering study used for residential HPWHs, with an adjustment to account for the difference in hot water consumption between residential and comm...
AI summary The electrical unitary energy savings for heat pump water heaters are calculated using a metering study for residential HPWHs, with an adjustment for differences in hot water consumption between residential and commercial buildings. The calculation uses variables defined in an equation and Table 213.
& lt;sup>270 Ecotope inc., NEEA Heat Pump Water Heater Model Validation Study, 2015, p. 72. since HEA tracking sheet shows that is the case for more than 98% of homes. Used Interior "EFAF" for electric resistance space heating, Average of...
AI summary The text references a study by Ecotope Inc. on heat pump water heater models and mentions an average of three non-ducted models in heating zone 3, which is most comparable to Nova Scotia. It also references a technical reference manual from the Illinois Commerce Commission.
Summary [Table](#page-140-0) 292 presents a summary of the values used to calculate heat reclaimer unit savings. The detailed methodology follows.
AI summary Table 292 summarizes the values used to calculate heat reclaimer unit savings, with a detailed methodology provided in the following text.
(10) Commercial Heat Pump Clothes Dryers
AI summary The document discusses commercial heat pump clothes dryers, focusing on their energy efficiency, cost-effectiveness, and potential integration into demand-side management programs. It highlights regulatory considerations and program evaluation metrics.