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ESA Memo to City of Pleasanton:June 13,2016 The table below summarizes the existing CCA programs in the Bay Area. TABLE 3:Summary of Community Choice Aggregation Programs in the Bay Area 31- Marin Clean Sonoma jCleanPower Peninsula Criterion Energy Clean Clean Power SF (MCE) Energy Launch Year 2010 2014 2016 2015 RE Content (target at 25% 33% 35% 50% launch) (Minimum) GHG-free 70%incL content(target 25% Parity w/PG&E N/A 20%L. at launch) Hydro RE Content 56% 36% N/A N/A (2015) GHG-free 66% 80% (incl. (including 9% N/A N/A content(2015) Hydro) L.Hydro) L Use of Yes Yes No No Unbundled RECs Rate savings S%below Current goal compared to IOU Parity PG&E Parity is 5%below (at launch) PG&E Primary Power Constellation Calpine& Currently Supplier(s)at Shell &Calpine lberdrola out to bid Launch Source: Peninsula Clean Energy Board Meeting,April 14,2016 Some of the key lessons of this comparison include: • Many CCAs are looking to exceed the equivalent of the state mandated RPS by using hydropower to further reduce GHG emissions while securing low cost supplies. These CCAs are setting forth strategies to provide cleaner power than can be provided by PG&E at lower rates. The option of Alameda CCA purchasing hydro power in order to reduce the GHG emissions from the power supply while gaining a cost advantage is a major element in the Study's Scenarios 2 and 3. • Both CleanPower SF and Peninsula Clean Energy do not include the use of unbundled Renewable Energy Credits. The use of these RECs,which involves purchasing of the energy credit without purchasing the associated power,is not considered in the analysis. The purchase of such unbundled REC's is controversial in some communities. • None of these CCAs are expected to rapidly build local renewable generation sources,but relied on large producers for their supplies in the short term. 10