Does anyone have any input on comparing the PG&E E-1, E-6 TOU and E-9 TOU A and B rate schedules for a combined Solar PV and Tesla?
I am just completing a 12,600/9924 Watt (STC/CEC) Solar PV system and buying a Tesla Roadster. I've been examining and building simplified spreadsheets trying to roughly analyze the PG&E E-9 A/B TOU (experimental rate schedule for Electric Vehicles) versus the recently ruined E-6 TOU versus the flat non-TOU E-1 rate schedules in selecting which schedule that is the lowest cost when combining Solar PV and a Tesla electric car and the timing of charging and electric usage timing that is practical.
I'm curious if anyone has found, developed or done any kind of analysis or come up with simple rules of thumb given all the variables. Its a messy Excel problem and I'm considering just writing software to compare the schedules given the variables and data. In addition, E-9 appears to have a separate meter option but separating the PV and home and Electric charging outlet seems odd.
The data includes the tariff schedules from Baseline ( which is not the same for everyone), 100-130%, 130-200%, 200-300% and over 300% for usage amounts and kWhr rates. These are different for E-1, E-6 and E-9 and three levels Peak, Partial Peak and Off Peak that vary from Summer/Winter, M-F/S-S and time of day. Then the PV system power can be sold into PG&E but produces its power for about 5-6 hours tailing off at each end that must be applied.
There must be a tool that allows usage over time, charging with time, Pv output with time over a year, user inputs and then uses the PG&E tariff tables and estimates yearly/monthly usage daily curves, cost, PV contribution etc.. It could be done with Excel but is rather messy. Writing PC software seems easier to me and more flexible.
Has anyone looked into this and share their knowledge and conclusions or possibly a tool so I don't have to develop my own.
thanks for any thoughts
Tom
I am just completing a 12,600/9924 Watt (STC/CEC) Solar PV system and buying a Tesla Roadster. I've been examining and building simplified spreadsheets trying to roughly analyze the PG&E E-9 A/B TOU (experimental rate schedule for Electric Vehicles) versus the recently ruined E-6 TOU versus the flat non-TOU E-1 rate schedules in selecting which schedule that is the lowest cost when combining Solar PV and a Tesla electric car and the timing of charging and electric usage timing that is practical.
I'm curious if anyone has found, developed or done any kind of analysis or come up with simple rules of thumb given all the variables. Its a messy Excel problem and I'm considering just writing software to compare the schedules given the variables and data. In addition, E-9 appears to have a separate meter option but separating the PV and home and Electric charging outlet seems odd.
The data includes the tariff schedules from Baseline ( which is not the same for everyone), 100-130%, 130-200%, 200-300% and over 300% for usage amounts and kWhr rates. These are different for E-1, E-6 and E-9 and three levels Peak, Partial Peak and Off Peak that vary from Summer/Winter, M-F/S-S and time of day. Then the PV system power can be sold into PG&E but produces its power for about 5-6 hours tailing off at each end that must be applied.
There must be a tool that allows usage over time, charging with time, Pv output with time over a year, user inputs and then uses the PG&E tariff tables and estimates yearly/monthly usage daily curves, cost, PV contribution etc.. It could be done with Excel but is rather messy. Writing PC software seems easier to me and more flexible.
Has anyone looked into this and share their knowledge and conclusions or possibly a tool so I don't have to develop my own.
thanks for any thoughts
Tom