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Community Choice Aggregation Feasibility Analysis Alameda County In this scenario, the renewable lost is the largest single element of the CCA rate, reflecting the higher renewable content of this scenario. Non-renewable generation is the next largest cost component of the rate, followed by the PCIA exit fee. The PCIA exit fee is expected to decrease in most years beginning in 2019, as it did in the case of Scenario 1. However, the costs associated with GHG allowance purchases are a lower portion of the total costs in this scenario because 50%of the non-renewable generation is expected to be met by hydro-electricity, which is a non-emitting resource. This limits the need for purchase of GHG allowances. The differential between PG&E generation rates and Alameda County CCA customer rates in Scenario 2 is lower than that under Scenario 1; however, it continues to follow a similar pattern over the years with respect to PG&E rates, and it is positive in all years from 2017 to 2030. As was the case under Scenario 1,because of this positive differential, Alameda County CCA customers' average generation rate (including contributions to the reserve fund) can be set at a level that is lower than PG&E's average customer generation rate in each year under this scenario as well. Figure 17. Scenario 2 Rate Savings, 2017-2030 12 - - PG&E 10 ,�. 8 :G0PCIElm:Renewable 6 ■Renewable 0 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Residential Bill Impacts Table 7 below shows the average annual savings for residential customers under Scenario 2. The annual bill for a residential customer on the Alameda County CCA program will be for the period 2017-2030 on average 6.5% lower than the same bill on PG&E rates. This is lower than, but close to, bill savings under Scenario 1. July,2016 21 MRW&Associates,LLC