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Estimating Your Monthly Electricity Bill PG&E Rates Estimator (from Martin Eberhard) -Input:domestic(home) energy for summer and winter and hourly usage.

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Presentation on theme: "Estimating Your Monthly Electricity Bill PG&E Rates Estimator (from Martin Eberhard) -Input:domestic(home) energy for summer and winter and hourly usage."— Presentation transcript:

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

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

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

5 Estimating Your Monthly Electricity Bill

6

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 Rate PlanSeason Time-of- Use Period Energy Charge ($/kWh) Tier 1 (Baseline) Tier 2 (101-130%) Tier 3 (131-200%) Tier 4 (201-300%) Tier 5 (>300%) Current E-1 All Year 24 hours $0.12233$0.13907$0.30180$0.34180 Current E-9 Summer On-Peak $0.28741$0.30470$0.49382$0.53382 Part-Peak $0.09406$0.11135$0.30047$0.34047 Off-Peak $0.03565$0.05294$0.16200$0.20200 Winter Part-Peak $0.09394$0.11123$0.30035$0.34035 Off-Peak $0.04457$0.06186$0.16200$0.20200 Proposed E-9 from Advice 3910-E Summer On-Peak $0.38451 Part-Peak $0.21431 Off-Peak $0.11041 Winter On-Peak $0.27932 Part-Peak $0.17365 Off-Peak $0.11305

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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