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Community Choice Aggregation Feasibility Analysis Alameda County Table ES-1 shows the average annual savings for Residential customers under Scenario 1. The average annual bill for the residential customer on the Alameda County CCA program could average about 7% lower than the same bill on PG&E rates. Table ES-1. Scenario 1 Savings for Residential CCA Customers Monthly Bill with PG&E Bill with Residential Consumption Alameda Savings($) Savings(%) (kWh) ($) County CCA($) 2017 650 147 142 5 3% 2020 650 160 145 15 9% 2030 650 201 188 13 6% Scenario 2 (Accelerated RPS) Under Scenario 2,Alameda County CCA meets 50% of its load through renewable power starting from 2017, while 50% of its non-renewable load is met through hydro-electricity(i.e., overall 50% qualifying renewable. 25%hydro, 25% fossil or market). In this scenario, the differential between PG&E generation rates and Alameda County CCA customer rates is slightly lower than that under Scenario 1,but continues to follow a similar pattern over the years with respect to PG&E rates. 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 lower than PG&E's average customer generation rate in each year under this scenario as well. The annual bill for a residential customer on the Alameda County CCA program in Scenario 2 could about 6.5% lower than the same bill on PG&E rates (on average over the 2017-2030 study period). This is less than, but close to, bill savings under Scenario 1. Scenario 3 (80% RPS by 2021) Under this scenario, the Alameda County CCA starts with 50% of its load being served by renewable sources in 2017, and increases this at a quick pace to 80% renewable energy content by 2021. In addition, 50% of its non-renewable supply is met through large hydro-electric sources. The differential between PG&E generation rates and Alameda County CCA customer rates in Scenario 3 is the lowest of the three scenarios, as this scenario has the most expensive supply portfolio(Figure ES-4). However,the expected Alameda County CCA rates continue to be lower than the forecast PG&E generation rates for all years from 2017 to 2030. Although this positive differential still allows for the collection of reserve fund contributions through the CCA's rates in all the years under consideration,between 2026 to 2028 the differential is very small. Similarly, the annual bill for a residential customer on the Alameda County CCA program will be on average only about 3% lower than the same customers on PG&E rates. July 2016 v MRW&Associates,LLC