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Community Choice Aggregation Feasibility Analysis Alameda County Individuals and Communities Self-Selecting 100% Renewables The existing CCAs all offer customers an option to choose to receive 100% of their power from renewable resources in exchange for a rate premium. However, each CCA's program is different. MCE Clean Energy has offered its"Deep Green" at a rate premium of 10/kWh since its inception. Sonoma Clean Power offers its "Evergreen" option at approximately the same price as PG&E's"Solar Choice" rate. Lancaster Choice Energy offers its Smart Choice as a fixed monthly premium rather than a variable rate. In all cases, only a very modest number of CCA customers—on the order of a few percent—have selected the 100% green rate option. Table 25. CCA 100% Green Rate Premiums �o ate Option Increment Above Default Rate Marin Clean Energy Deep Green 1C/kWh Sonoma Clean Power EverGreen 3.5C/kWh Lancaster Choice Energy Smart Choice $10/month Potential Alameda Co. CCA TBD -1.5C/kWh Any full renewable pricing option offered by the Alameda County CCA would have to be set by the CCA's management. The value shown in Table 25,–1.50/kWh, is the average incremental cost of green power used in the CCA supply assessment(Scenario 2) over the study period. (Initially, it would have to be–1.90/kWh.) Thus the actual number of hypothetical customers selecting the rate would not impact the economics of the CCA customer who remain on the standard rate. • Representatives from at least two communities, Berkeley and Albany, have expressed interest in having their residents and businesses default onto a 100% renewable rate. If priced at the cost of incremental renewables, such as is assumed in Table 25, then there would be no financial impact on the CCA or its remaining customers. Nonetheless, it could have implications: • Separate CCA opt-out notifications would be needed. A key feature of the opt- out notification is the price comparisons against PG&E. As the default rate would be different for these communities, a different notice would have to be sent. This would simply increase the start-up cost for the CCA, the increment could be paid for by the city electing a different default rate. • Having a higher default rate might increase the number of oft-outs in the community. • PG&E's billing system would have to be able to handle city- or zip code-specific default options. That is, as new residential or businesses move to a self-selected July,2016 52 MRW&Associates,LLC