Topic:"Carbon Capture Utilization And Storage" in M12282

$26.1 $0 $26.1 Non-Utility System Impacts: Host $0.8 $4.8 $0.8 $4.8 $0.8 $4.8 Customer Impacts Non-Utility System $0 $0 $42.4 $0 $6.2 $0 Impacts: Other Fuels DATE FILED: May 16, 2025 Page 35 of 38 EfficiencyOne Benefit-Cost Analysis Test A...

AI summary The document presents a benefit-cost analysis of heat pump replacements in Nova Scotia, evaluating impacts on air pollutants and GHG emissions. The analysis uses a 2% social discount rate and considers different fuel types being replaced, including electric resistance, fuel oil, and natural gas. The total net benefits and benefit-cost ratios are provided for each scenario.

ended by EFG for screening the 2027-2031 DSM Plan is 8 compared to the two prior tests in Table 4. 9 Table 4: Impact Category Comparison of Recommended Nova Scotia and Prior Tests 10 11 Another difference relates to GHG impacts. The 2023-2...

AI summary The document discusses differences between the 2023-2025 TRC test and the new recommended Nova Scotia test, particularly in GHG impact calculations. The new test accounts for societal avoided costs of carbon, unlike the prior test, which only considered the avoided cost of carbon as an electric utility system impact. An example is provided using heat pump replacements in 2026 to illustrate cost-effectiveness results.

Table 20: Residential Heat Pumps - Fuel Oil Example - GHG Impact Annual Annual Annual Avoided Electric Increased Fuel Oil Consump Electric Carbon Net Social Annual Emissions tion Emissions Net SCCO2 Compliance Cost Minus Non- 2% Real Avoid...

AI summary The table presents the annual GHG impact of residential heat pumps replacing fuel oil, showing avoided fuel oil emissions, increased electric emissions, net emissions reduction, and associated costs from 2026 to 2033. It includes metrics like carbon price, compliance costs, and net social value.

Table 23: Residential Heat Pumps – Pipeline Gas Example – GHG Impacts Annual Annual Annual Avoided Electric Increased Nat Gas Consump Electric Carbon Net Social Annual Emissions tion Emissions Net SCCO2 Carbon Compliance Cost Minus Non- 2%...

AI summary The table presents the GHG impacts of residential heat pumps compared to pipeline gas, showing annual avoided natural gas consumption, electric consumption, and net emissions reductions from 2026 to 2034, along with associated carbon compliance costs and social discount values.

63 B. Working Group Review of Current Practice for Electric Utility System Impacts Table B1 is a synthesis of the working group homework assignment and discussions of which electric USIs are currently included in the Nova Scotia screening...

AI summary This section discusses the working group's review of current practices for including electric utility system impacts in the Nova Scotia screening test of energy efficiency and demand response programs. It also outlines the social costs of carbon and greenhouse gas impacts based on Canadian guidance.

rough 2080 and are based on global damage estimates. A 2% real discount rate is recommended for estimating impacts. The values through 2040 for carbon dioxide, methane and nitrous oxide are: SCC/S SCM/SC- SCN/SC- Year C-CO2 CH4 N2O 2020 $2...

AI summary The text provides social cost values for carbon dioxide, methane, and nitrous oxide from 2020 to 2040, based on global damage estimates and using a 2% real discount rate. These values are used for impact estimation purposes.

- Reference: Appendix B, Page 54 "The starting prices for heating oil and pipeline gas are based - on recent provincial data and include a carbon price components based on $110/metric tonne - in 2026". (a) Please provide the basis for appl...

AI summary The response to a query about the basis for applying a carbon price to pipeline gas refers to Environment Canada projections for federal carbon pricing, as detailed in EfficiencyOne's response to NSEB IR-26, specifically the 'Other Fuel Impact Nat Gas' worksheet.

Starting price $9.39 per GJ Commodity p https://www.cer-rec.gc.ca/en/data-analysis/energy-commodities/natural-gas/report/canadian-residential-natural-gasbill/nova-scotia.html Carbon Price Schedule Year 2023 $ 65 metric tonne https://www.ca...

AI summary The document outlines the carbon price schedule from 2023 to 2030, with increasing prices each year, and provides information on avoided emissions per unit of natural gas. It also mentions the natural gas average annual escalation rate and notes that the carbon price is excluded from the estimated natural gas price to avoid double counting greenhouse gas impacts.

Emissions Factor Year (tonnes CO2e/MWh) 2026 0.448 2027 0.355 2028 0.431 2029 0.393 2030 0.086 2031 0.159 2032 0.320 2033 0.360 2034 0.369 2035 0.269 2036 0.355 2037 0.288 2038 0.239 2039 0.218 2040 0.221 (b) Please provide the source of t...

AI summary The document requests the source and clarification of projected electricity emissions factors for 2026-2040, confirms the natural gas combustion emissions factor used, and asks for recent emissions factors for 2024. It also inquires about the appropriateness of using average or marginal emissions factors for estimating emissions increases. The response indicates the values are derived from the DICE method used in the 2023-2025 DSM Plan and provides context on furnace efficiency assumptions.

1 Request IR-19: 2 3 Please provide supporting empirical evidence demonstrating causation for the following 4 Societal Impacts: 5 6 (a) energy efficiency investments and changes in medical outcomes and costs. 7 8 Response IR-19: 9 10 The f...

AI summary The document requests empirical evidence linking energy efficiency investments to medical outcomes and costs and asks for the source of the carbon cost used in the BCA. EFG responds by citing the Interim Updated Guidance from the Government of Canada and refers to EfficiencyOne's previous responses.

- 3 Operator (NSIESO) to better understand this issue. 1 Request IR-32: 2 3 Reference: Appendix B EFG Report 4 5 Text Box 1: Summary of Key EFG Recommendations item 6) makes reference to an Appendix F 6 and item 7) refers to Appendix C. Pl...

AI summary The document discusses a request for information related to the Energy Futures Group (EFG) report, including the need for Excel versions of appendices and details on local non-GHG pollutants in Nova Scotia. It also references the use of benefit per kWh for local non-GHG air pollutants and their connection to EfficiencyOne (E1) programs.

Request IR-46: Reference: Appendix B EFG Report Page 58 notes that the cost of carbon is based on December 2022 updates from Environment Canada. Given that Canada has effectively abolished the federal carbon tax system in April 2025. Does...

AI summary The response to Request IR-46 clarifies that the social cost of carbon is based on December 2022 data and is not affected by the abolition of the federal carbon tax in 2025. EfficiencyOne (E1) will continue to use updated carbon pricing values in its Benefit-Cost Analysis (BCA) framework for Demand Side Management (DSM) Plan Applications.

1 Table 2: Illustrative Example - Hybrid System Replacing Fuel Oil Furnaces Nova Scotia Test ($Million), 2% Social Discount Rate, Using 2023-2025 Avoided Costs: Example based on 1,000 Hybrid Systems Replacing Fuel Oil Furnaces, Program Yea...

AI summary Table 2 presents a Benefit-Cost Analysis (BCA) of a hybrid system replacing fuel oil furnaces, showing net benefits with a benefit-cost ratio of 2.21 for E1 costs and 2.27 for E3 costs. The analysis includes energy generation, capacity, environmental impacts, financial incentives, and other factors such as avoided heating oil costs and health impacts from greenhouse gas emissions.

- (c) Please explain in detail the basis for the development of each of the Impact categories Benefits and Costs figures shown under the Heat Pump replacing Natural Gas heading of Table 11. 2 Reference: Appendix 8, page 17: "EFG recommends...

AI summary The text requests an explanation of the basis for the development of benefits and costs figures under the 'Heat Pump replacing Natural Gas' category in Table 11, and references discussions on DSM portfolio impacts on the gas system and the application of a carbon price to pipeline gas.

Emissions Factor Year (tonnes CO2e/MWh) 2026 0.448 2027 0.355 2028 0.431 2029 0.393 2030 0.086 2031 0.159 2032 0.320 2033 0.360 2034 0.369 2035 0.269 2036 0.355 2037 0.288 2038 0.239 2039 0.218 2040 0.221 (b) Please provide the source of t...

AI summary The document presents projected electricity emissions factors for Nova Scotia from 2026 to 2040 and requests clarification on the source of these projections and what they represent (e.g., average annual emissions intensities or marginal emissions intensities based on winter peak generation resources).