TOU for SCE in Southern California analysis

[tweekzilla]

the negative credit will be reset to $0 at end of relevant period (12 months) and your starting a new period.

Thanks - So you never have to actually **pay** money to SCE if you are a net producer? My neighbor seemed to think that you did which didn't make sense to me. I guess if you are a net producer then it does not matter what tariff you are on except for the monthly charge.

[tweekzilla]

So I've been playing around with the spreadsheet and it's amazing how good the TOU-A rate is if you use power during super off-peak. I put in my expected generation and history from last year along with a scenario of charging an EV at night (~20kWh per day). Domestic would cost me $1080 a year, TOU B&T are about the same at $750 a year. TOU-A I would still have a credit of $100!

Is it too good to be true (or maybe I screwed up the sheet....)?

[FFE]

Is it too good to be true (or maybe I screwed up the sheet....)?

It seems like a great plan for all solar homeowners. My system is sized so that my peak and off peak credit more than offsets dollar wise my Super off peak use this time of year. I could buy a much smaller system due to this plan. I generate less than half of the kWh I use right now but still generate approximately $1 a day in credit. I will use that credit I am building up in summer but plan to get a net $0. Without TOU-A I would need at least twice the system (twice the installed cost too) to cover all of my bill. My situation is a little different than most since we have a full electric car and a plug in hybrid that uses quite a bit of Super off peak power.

[silversaver]

So I've been playing around with the spreadsheet and it's amazing how good the TOU-A rate is if you use power during super off-peak. I put in my expected generation and history from last year along with a scenario of charging an EV at night (~20kWh per day). Domestic would cost me $1080 a year, TOU B&T are about the same at $750 a year. TOU-A I would still have a credit of $100!

Is it too good to be true (or maybe I screwed up the sheet....)?

check my last bill. I'm a net user withdraw 3100kWh from SCE but still with over -$500 in my account.

[Ward L]

How can I get a copy of the spreadsheet with SCE tariff schedules to calculate the best schedule for me? I've looked around and see where members are using it and would like to try it out. Thank you in advance.

[josefontao]

I havent read the 15 pages of this thread and maybe someone already posted this link. If not, it might be worth taking a look.

http://www.kglad.com/Files/forums/sce.html

You can feed the data from SCE's green button for an entire year and the site will give you a breakdown of how much you can expect to pay on the various TOU and the tiered plan.
It also takes into account an EV vehicle if you plan to purchase one in the near future.

I'm not sure that the TOU-D-T results are accurate, at least in my case, but the other plans were right on the money.

The results look somehting like this:
Monthly Mileage = 1000 miles :: Wh/mile = 276
With the 4-tier plan, production and car: your electricity cost is: $342.59
With the TOU-D-A plan, production and car: you consumed more energy than you produced but you will owe SCE $0.00
With the TOU-D-B plan, production and car: your electricity cost is: $198.86
With the TOU-D-T plan, production and car: you consumed more energy than you produced but you will owe SCE $0.00
Electricity cost for car only under TOU-EV-1 plan (requires 2 meters): $33.24