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Community Choice Aggregation Feasibility Analysis Alameda County the other hand, Scenario 3 is relatively unaffected by the "High Natural Gas Prices" sensitivity case due to the lower share of natural gas power in this supply portfolio. In the stress case, Alameda County CCA customer rates exceed PG&E customer rates on average over the 2017-2030 period for all three scenarios, with the rate differential being highest in Scenario 3 at-1.50/kWh. This is double the Scenario 2 stress case rate differential of- 0.75¢/kWh. Conclusions Under the base case scenario, Alameda County CCA customer rates compare quite favorably to PG&E rates in all years from 2017 to 2030,under all three supply scenarios. Furthermore, under the base supply scenario (RPS compliance), Alameda County CCA customer rates remain below PG&E rates under all but the most extreme sensitivity case considered. However, under the alternate supply scenarios, as the CCA renewable content increases, the CCA becomes less completive with PG&E. This is especially pronounced in the 80%-by-2021 scenario, which shows marginal or negative competitiveness vis a vis PG&E in a number of scenarios. Under the stress case, irrespective of the supply scenario considered, CCA rates are higher than PG&E rates. 'While the stress case may appear extreme given that it involves four adverse sensitivities simultaneously occurring, cost volatility in the power industry is well-established, and the possibility of adverse conditions arising should be understood and planned for in any CCA venture. July,2016 32 MRW&Associates,LLC