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4 Environmental Analysis 4.6 Energy Operations The Project would assist the State of California in achieving or exceeding its RPS and GHG emissions reduction objectives by developing and constructing a new California BESS to store renewable energy, which also would help in achieving or exceeding its energy storage mandates. Net consumption of electricity associated with efficiency loss of equipment would be negligible during operation of the Project. Fuel consumption from operations is expected to be minimal, as the facility would be unstaffed and would require minimal vehicle usage for O&M. The Project would emit 13.6 metric tons of CO2 (13,600 kilograms) annually during operations, as calculated in the Air Quality and Greenhouse Gas Technical Report for the Project, included as Appendix D to this EIR. Assuming operational CO2 would primarily be emitted from worker vehicles, 13.6 metric tons of CO2 equates to 708 gallons of gasoline consumption, using the 19.2 kilograms per gallon conversion factor (The Climate Registry 2022). As a battery storage project that absorbs energy during periods of increased energy production and releases energy during peak demands for energy, the Project would have a positive effect on the peak and base period system demands for electricity. As described above, the activities associated with construction of the Project are conservatively estimated to consume a total of 225,924 gallons of diesel fuel annually during construction. Fuel used during operations is calculated to be 708 gallons of gasoline per year). By comparison, the amount of petroleum consumed in the state of California was 13.8 billion gallons of gasoline and 1.6 billion gallons of diesel in 2021 (CEC 2022b). As a result, the proposed Project would not result in potentially significant environmental impact due to wasteful, inefficient, or unnecessary consumption of energy resources during Project construction or operation. Mitigation: None required. IMPACT 4.6-2: Would the project conflict with or obstruct a state or local plan for renewable energy or energy efficiency? (No Impact) The proposed Project would assist the State of California in achieving or exceeding its RPS and GHG emissions reduction objectives by developing and constructing a new California BESS to store renewable energy, which would also help the state in achieving or exceeding its energy storage mandates. As an energy storage facility, the Project would be consistent with the Clean Air Plan Energy Control Measure EN 1, Decarbonize Electricity Production, which supports local renewable energy programs and strives to maximize the amount of renewable energy produced and used for electricity in the Bay Area (BAAQMD 2017). The Project would not conflict or obstruct with a state or local plan for renewable energy or energy efficiency. Mitigation: None required. 4.6.6 PG&E Tesla Substation Improvements and Gen-tie To accommodate the Project, PG&E would be responsible for siting, design, and construction of the gen-tie line from the point of change of ownership (POCO) to its substation. Two options are available for the gen-tie line route from this point. The first option would be to connect via an aboveground line from the POCO to a point on the west side of the southwestern boundary of the substation. The second option is to enter the substation on the southwestern edge by way of a Griffith Energy Storage Project 4.6-6 Tetra Tech/SCH 2022120675 Draft Environmental Impact Report August 2023