Hello Tesla Drivers Recently, I had a long discussion with a PG&E representative at the Building and Renovation Service Center (BRSC) at 1-877-743-7782 to better understand the electric rate schedules and to help me choose the best possible rate for charging my tesla S.I've prepared the following overview for those in my situation. E-1 Rate Schedule Currently, my PG&E account is calculated using a rate schedule referred to as E-1. Accounts on this schedule pay a rate that varies with the difference between actual power usage and a “baseline” power usage. The magnitude of the difference drives the actual rate, which varies from $0.13 per Kilowatt-hour (abbreviated kWh) to $0.35 per kWh. The baseline is calculated using the per home energy usage of comparable homes (# bedrooms and square footage and main variables and Zip Code are the main variables used in the calculation). But, the most important point is that the E-1 rate does not vary with the time of day. So, right now, it doesn’t matter when I charge the car. E-9 Rate Schedule Currently, I have the option to shift billing to a “time of use rate” schedule, which is referred to as an E-9 rate schedule. There are two subcategories to this schedule: E9-A for homes with single meters; and, E9-B for homes with double meters. Since I have a single meter, I can only change our billing to the E9-A rate schedule, which has a set of rates for summer and for winter. Under the current summer rate schedule, there is a range of rates for three different times of the day: Off-Peak, Partial- Peak, and Peak. Off-Peak runs from Midnight to 7:00am; Partial-Peak runs from 7:00am to 2:00pm; Peak hours are from 2:00pm to 9:00pm; then, rates drop down to Partial-Peak from 9:00pm to midnight. Each Off-Peak, Partial- Peak, and Peak hour range have their own range of rates. Again, the specific rate used for billing is based on the “baseline” concept. But, the rate used per time of day will fall into one of these three ranges, as follows: Off-Peak: Low: 3.5¢ per kWh; High: 20¢ per kWh Partial- Peak: Low: 9¢ per kWh; High: 34¢ per kWh Peak: Low: 30¢ per kWh; High: 54¢ per kWh For winter, the E9-A schedule is similar but has only two time of day periods: Off-Peak and Partial- Peak. Off-Peak runs from midnight to 7am; Partial-Peak runs from 7am to midnight. Rate ranges are the same. The E-9 rate schedule is only available until August, which is just one month away. After August 1, PG&E will offer the EVA rate schedule. EVA Rate Schedule The EVA rate schedule is designed specifically for electric vehicles. It is much simpler to understand than the E-9 schedule because it eliminates the baseline concept. So, there are no “rate ranges” only fixed rates per time of day. The EVA rate schedule uses the same Off-Peak, Partial- Peak, and Peak times for summer and winter as described above. However, there are two main differences: First, the rates differ between summer and winter. And, second, there is only one rate per time of day. For summer and winter respectively, the rates are as follows: Summer Off-Peak: 9¢ per kWh; Partial- Peak: 20¢ per kWh; Peak: 37¢ per kWh Winter Off-Peak: 10¢ per kWh; Partial- Peak: 16¢ per kWh; Peak: 26¢ per kWh Summary and Recommendation I believe that it is best for me to switch to E9-A as soon as possible. Further, I plan to switch to EVA on August 1[SUP]st[/SUP]. Summary: The E9-A rate schedule saves me $100 per month. The EVA rate schedule saves me $150 per month. My home is in San Francisco Zip Code, 94112, and has 1,300 sq. ft. and 2 bedrooms.