evchels said:
smkettner said:
Anyone see changes to the EV rates?
Yes, SCE filed to change the whole house TOU-D-EV rate at the end of last year; it's expected to take effect ~July. The new rate design replaces the two-tier system with two different A/B rate options (customer choice), and changes the timing of the peak/off-peak periods.
My July bill does indeed show changes implemented on July 7 for Summer rates. My tariff, without any new action on my part, is TOU-DTEV-SDP-O. I believe the last few letters refer to my options allowing SCE to cut off my A/C briefly.
I cannot find any reference to changes in the TOU period timing, either on my bill or in the online Tariff Book. The dates shown in the Tariff book are May 29 for filing, Jun 1 effective. Perhaps the timing changes were not implemented. PG&E TOU periods are much less generous for solar customers, because they make it harder to get the big payoff from highly negative Onpeak solar generation. I suspect SCE realizes this, and wants to move in that direction.
My bill shows following changes. It is confusing, easy to make mistakes:
DELIVERY
On-Peak and Off-Peak same changes:
L1: .029 -> .051
L2: .236 -> .198 Down - consistent with leveling, less progressive
SuperOff-Peak:
L1, L2 No change.
GENERATION
L1: No changes for OnPeak, OffPeak, or SuperOffPeak
L2 OnPeak: .265 -> .288
L2 OffPeak: .089 -> .112
L2 SupOffPeak: .023 -> .046 Double
New Totals
L1, L2
OnPeak .316, .465
OffPeak .14, .31
SuperOffPeak .09, 09
My understanding is that the bill signed last Fall also opens the possibility for the first time to assign different prices for positive and negative flows within the same time period. My bill lists the total kWh flows in each direction for each time period, but the billing so far applies only to the
NET flow for each period.
If they want EV drivers to continue to charge at night when wind prices are low and sometimes even negative and the grid is lightly loaded, they need to be careful not to drop the negative OnPeak credit price below the SuperOffPeak consume price. If they do, we will all switch to charging our cars during the daytime directly from solar, so that the kWh do not flow through the SCE meter at all.
Despite these changes, both implemented and being planned, I believe CA still has much better solar and EV incentive pricing than many other states. TX now gives each utility wide latitude on Net Metering options, including the option of not giving ANY credit for reverse flow.
At Tesla Motors Club Connect Conference in Monterey there was an interesting conference session on Net Metering and Vehicle to Grid. If IRRC, HI in particular appeared to be approaching the point on some islands where the solar generation equals the afternoon load. If this happens, they will want to create incentives to charge the EVs during the day.