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Estimating Your Monthly Electricity Bill

Estimating Your Monthly Electricity Bill. PG&E Rates Estimator (from Martin Eberhard). Input: domestic(home) energy for summer and winter and hourly usage annual electric vehicle mileage and average energy consumption electric vehicle charging scheduling

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Estimating Your Monthly Electricity Bill

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  1. Estimating Your Monthly Electricity Bill PG&E Rates Estimator (from Martin Eberhard) • Input: domestic(home) energy for summer and winter and hourly usage • annual electric vehicle mileage and average energy consumption • electric vehicle charging scheduling • any relevant solar PV information (calculations not checked or • modified) • -Output: Calculated estimates of your electricity rates under: • E-1 (tiered non-TOU) • E-6 (currently available, tiered solar TOU) • E-7 (grandfathered, tiered solar TOU) • E-9A (home and EV, tiered TOU) • E-9B (EV tiered TOU) with E-1 (home) • Estimate of cost per mile driving an EV

  2. Estimating Your Monthly Electricity Bill Summer 2010 Record Use (54 kwH) – Weekday Off-Peak Off-Peak Off-Peak Off-Peak Off-Peak Off-Peak Off-Peak Off-Peak Part-Peak Part-Peak Part-Peak Part-Peak Partial-Peak Partial-Peak Partial-Peak Partial-Peak Partial-Peak Partial-Peak Partial-Peak Partial-Peak Peak Peak Peak Peak Peak

  3. Off-Peak Part-Peak Partial-Peak Peak Estimating Your Monthly Electricity Bill Summer Optimized Low A/C Record Use (14.5 kwH) - Weekday Off-Peak Off-Peak Off-Peak Off-Peak Off-Peak Off-Peak Off-Peak Part-Peak Part-Peak Partial-Peak Partial-Peak Partial-Peak Partial-Peak Partial-Peak Partial-Peak Peak Peak Peak Peak

  4. Off-Peak Partial-Peak Estimating Your Monthly Electricity Bill Winter 2010 Example (13.5 kwH) - Weekday Off-Peak Off-Peak Off-Peak Partial-Peak Partial-Peak

  5. Estimating Your Monthly Electricity Bill

  6. Estimating Your Monthly Electricity Bill

  7. CPUC Decision 11-07-029 (July 2011) • Produce incentives for the adoption of electric vehicles • Simplify the calculation of electricity rates (eg. removal of tiers from E-9b) PG&E Advice Letter 3910-E • Modifications to Electric Schedule E-9 • - Restructure the schedule for Off-peak, Partial-peak, and Peak rates • - Convert both E-9A and E-9B to non-tiered TOU rates • - Remove meter charges (already $0 for smartmeter customers) but • increase daily customer minimum charge ($.14784/day to $.21881/day)

  8. PG&E Advice Letter 3910-E

  9. PG&E Advice Letter 3910-E

  10. PG&E Advice Letter 3910-E Projected Effects on Current E-9A Customers (based on 324 customers) - Customers in the top quartile of consumption may see bill reduction of 15% - Customers in the two middle quartiles will see an average increase of 19% - Customers in the bottom quartile (currently using the least electricity) will see an increase of “nearly 80 percent” Projected Effects on Current E-9B Customers (based on 35 customers) - “All but 1 of these customers would have bill increases resulting from the revised Schedule E-9 rates, and the average increase for the electricity billed under Schedule E-9 to this group of customers would be approximately 60 percent.”

  11. Examples of Rate Change

  12. Break-even between Current E9A and Proposed E-9A

  13. Concerns Over Advice Letter 3910-E • Increased Rates for 75% of current E-9A customers and nearly all E-9b customers • Removal of incentives for customers to reduce monthly electricity usage (i.e. the policy supports rates that are the same regardless of monthly use, so go ahead and use electricity when convenient, forget conservation) • Removal of customer choice for a tiered, TOU electricity rate (no grandfathering options for current E-9 users or pricing alternative for future EV owners) • No discernable incentives for the adoption of electric vehicles

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