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City of Pleasanton <br />CCA Renewable Energy Scenario Planning <br />2 <br />Methodology <br />Data Sources <br />GHG emissions associated with electricity consumption are based on the quantity of electricity used <br />and the emission factor of the sourced electricity. Electricity emission factors are driven by the power <br />mix (e.g., coal, natural gas, solar, wind) that makes up the electricity package profile.This analysis <br />sourced 2023 activity data from the City of Pleasanton, which was provided via email, and emissions <br />factors from the California Energy Commission (CEC) to estimate current emissions from electricity <br />consumption at municipal buildings and facilities. For the purpose of assessing the scenario impacts, <br />it was assumed that electricity consumption by municipal buildings and facilities would remain <br />constant over time. This assessment does not account for changes in electricity consumption by the <br />municipality that may result due to electrification of buildings, development of on-site renewable <br />energy, or increased charging of electric vehicles.1 Table 1 below provides a summary of data sources <br />referenced for establishing 2023 activity data and emissions factors from which the forecasted GHG <br />reduction impacts were determined. <br />Table 1 Data Sources <br />Data Type Description Value Unit Source <br />Activity Data Municipal Building and <br />Facilities Electricity <br />Consumption <br />8,115,921 kWh <br /> <br />City of Pleasanton <br />Transmission and Distribution <br />Losses <br />5.1% Percentage eGRID1 <br />Emissions Factors Ava (Renewable 100) 0 lbs CO2e/MWh CEC Power Content Labels2,3 <br />Ava (Bright Choice) 496 lbs CO2e/MWh CEC Power Content Labels2,3 <br />Notes: <br />1. Environmental Protection Agency (EPA). 2024. eGRID Data Explorer, grid gross loss rates 2022. Available at: <br />https://www.epa.gov/egrid/data-explorer <br />2. Verified power content labels for 2023 have not yet been processed and released by the California Energy Commission (CEC). The <br />verified 2022 power content labels were used as an approximation of 2023 emissions factors. <br />3. California Energy Commission (CEC). 2022. 2022 Power Content Label, East Bay Community Energy. Available at: <br />https://www.energy.ca.gov/filebrowser/download/6031 <br />Assumptions <br />For the purposes of forecasting GHG emissions and associated changes in GHG reduction targets, the <br />following set of assumptions were made to conduct the assessment: <br />• The rate of municipal electricity consumption remains constant from 2023 through to 2045. <br />• 100 percent of municipal buildings and facilities will shift to/from Renewable 100 and Bright <br />Choice at the times specified in the scenarios, where applicable. <br />• Transmission and distribution losses will remain consistent from 2023 through to 2045. <br /> <br /> <br />1 As specified by the City in previous conversations, this assessment need only estimate based on current <br />conditions. The City will consider conducting an assessment incorporating considerations for electrification and <br />increased EV fleet in a future analysis. <br />Page 11 of 248