RES 221271 - Laserfiche WebLink

Future GHG Emissions Forecasts Pleasanton Climate Action Plan Update 47 Water and Wastewater Emissions Due to the increased use of the water system attributed to increases in job and population growth in Pleasanton, service population was used as a scaling metric to determine water and wastewater service emissions through 2050. Projections for water used a baseline activity factor of 127.7 kWh per service population per year. This emissions factor was multiplied by service population growth through 2050 to find total kWh usage. The RPS for electricity generation was then applied to water emissions, as described in the Legislative Adjustment Section, to determine final MT CO2e emissions as shown in Tables 32 and 33. Table 32 Water and Wastewater Adjusted Forecast Scenario Methodology Forecasted Activity Data (Scaling Factor) Emissions Factor Applied Legislative Reductions Water, Service population (population and employment growth) PG&E electricity emissions factors, 127.7 kWh per service population per year Assumes an electricity mix of 44 percent, 60 percent, and 100 percent GHG-free by 2025, 2030, and 2045 respectively for PG&E emission factors per RPS requirements. Wastewater, Service population (population and employment growth) 0.00618 MT CO2e per service person per year for wastewater N/A MT CO2e: metric ton of carbon dioxide equivalent; kWh: kilowatt hour; PG&E: Pacific Gas and Electric; N/A: not applicable Table 33 Water Adjusted Forecast Scenario Results by Target Year Activity Data 2020 2025 2030 2035 2040 2045 2050 Service Population 145,022 146,548 150,255 160,402 168,157 176,296 184,840 kwh/Service Person 127.7 127.7 127.7 127.7 127.7 127.7 127.7 Total kWh 18,520,765 18,715,598 19,188,995 20,484,966 21,475,331 22,514,795 23,605,848 RPS Electricity Factor (MTCO2e/ MWh) 0.08603 0.06882 0.05162 0.03441 0.01721 0 0 MT CO2e 1,593 1,288 991 705 370 0 0 MT CO2e: metric ton of carbon dioxide equivalent; kWh: kilowatt hour; RPS: renewable portfolio standard