Jimmydreams said:
About the randomly assigned rates; Yes, one of those rate tiers IS more expensive than regular TOU rates.
The SDG&E guy made a point of claiming that the WORST rate in the experimental table of 3 was EQUAL to the current rate, and that the other two were better. I don't see how this is true, considering the highest Super Off-Peak-Summer rate in the experiment will be $0.13873/kwh and the current EV-TOU rates are about $0.096. The other two groups will be paying $0.07634 and $0.06722/kwh respectively, so they will be paying less for Super Off-Peak-Summer usage, but their On-Peak and Off-Peak rates are higher than the first group, should you need to charge at some time other than the middle of the night.
Assume you charge 24kWh into the car EVERY day for 3 years. The difference between .14/kWh and .17/kWh over 3 years is $788. Considering the free BLINK EVSE and install, are you really getting screwed? Go check the AV folks and the estimates for THEIR EVSE + install!!!!!
I agree, but it is not even that bad. First of all, you have only a 1 in 3 chance of being assigned to the EPEV-L group rate (the highest). Then, you do not have to stay at that rate for 3 years. The project only lasts 2 years, and according to the EV Project residential agreement, after 12 months on the assigned PEV-TOU rate, you can switch to another one. So your assumption of 3 years above is high, as are your usage assumptions (they equate to driving over 35,000 miles a year), although your rate delta assumptions don't agree with what I have read and sound low. The difference is not $.03/kwh, but more like $.06 or .07/kwh. A more realistic estimate of the cost difference between the highest and lowest rates in the project might be 10 KWH/day for 12 months (3650KWH total, which equates to 14,600 miles of driving in a year) times the $.07 difference in rates, which equals $255. This is less than 1/10 of the benefit from being in the project. That is trivial, in my way of thinking.
Besides....we all know that if we get the highest rate, we'll just use 110v whenever possible and avoid the higher charge.
I don't think I will be doing that. On my standard DR rate schedule, even with my paltry current home usage, I already routinely exceed my baseline allocation of 317KWH and get into the Tier 2 rates. Using an additional 2-300 KWH/month charging my car will put me into the Tier 3 rate of $.19/kwh and even Tier 4 rate @ $.21/kwh, costing me more than even the highest experimental PEV-TOU rate of $.13 and taking twice as long to charge the car.
Maybe it's different for you guys already on TOU metering or on solar, but that's the way I see it for my situation.
TT