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ESA Memo to City of Pleasanton:June 13,2016 There are many tariff offerings provided by PG&E. It is likely that customers within Alameda County may have as many as 50 unique tariff options. It will be necessary for Alameda CCA to be cognizant of these tariff options in designing their tariffs to ensure that all customers are fairly apportioned costs and benefits. These options include fixed charges (usually in$/meter per day in the billing period),energy charges ($/kwh consumed during the billing period on either a flat, tiered,seasonal or time of use basis) and demand charges ($/kwh of maximum metered demand during the billing period on a seasonal,time of use or connected load basis). The rates customers are charged include many components.The table below illustrates a typical PG&E residential bill. The key components of the bill are generation charges,distribution charges, conservation incentive adjustments,transmission charges and other costs. The Alameda CCA can impact only the generation charge,which typically represents about 50%of the total charge. This tends to dilute any price advantages that the CCA can gain through energy procurement. Figure 1: PG&E Residential Rate Breakdown(E-1) UNBUNDLING OF TOTAL RATES Energy Rates by Component (S per kWh) Generation: S0.09684 (R) Distribution": S0.08338 (I) Conservation Incentive Adjustment: Baseline Usage ($0.04544)(R) 101%- 130% of Baseline (50.00275) (I) 131% -200% of Baseline $0.05822 (I) 201%- 300% of Baseline S0.13633 (I) Over 300% of Baseline $0.13633 (I) Transmissions (all usage) $0.02144 (I) Transmission Rate Adjustments* (all usage) $0.00010 (I) Reliability Services* (all usage) $0.00023 Public Purpose Programs (all usage) $0.01405 Nuclear Decommissioning (all usage) $0.00022 Competition Transition Charges (all usage) 50.00338 Energy Cost Recovery Amount (all usage) ($0.00002) DWR Bond all usage) $0.00539 New System Generation Charge i all usage;" S0.00255 Source:Peninsula Clean Energy Board Meeting, May 26,2016 Efficacy of the Three CCA Scenarios The Study presents three scenarios for the CCA,with differing assumptions concerning the amount of carbon-free power being supplied to the CCA so as to assess the costs and greenhouse gas (GHG) emissions reductions possible with the CCA. Scenario 1 (Renewable Compliance) represents a significant cost savings for consumers across the customer classes but with a large increase in GHG emissions over the PG&E supply,assuming an 5