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lonndoggie
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Re: Official California SDG&E Thread

Fri Aug 12, 2011 5:27 pm

ENIAC wrote:Basically EV ToU with net metering appears to have thrown their billing system for a loop.
EV-TOU-2? That's what I'm looking at after the study period. I'd say "how's that going", but apparently you don't know yet! :?:
ENIAC wrote:I have a spreadsheet with readings from both meters once a week back to Jan. So I know, within a couple of bucks, what the bill should be. We'll see...
Sourced from Energy Waves? Good stuff, that; I wish it had at least one more decimal point of precision, to tens of watt-hours, but it's still the real data.

Good luck, post up when you find out.
Res: 4/20, RAQ: 10/1, Order: 10/7
EV Proj OK 9/17, install 4/19, 2nd meter 5/5
Pend > Apr/11 > 4/15 > 4/19 > 4/15 > 4/18 > 4/22 > 6/14 > 6/16 > 6/22
Delivered 6/15!!
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SanDust
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Re: Official California SDG&E Thread

Sat Aug 13, 2011 6:23 pm

lonndoggie wrote:EV-TOU-2? That's what I'm looking at after the study period. I'd say "how's that going", but apparently you don't know yet! :?:
Sourced from Energy Waves? Good stuff, that; I wish it had at least one more decimal point of precision, to tens of watt-hours, but it's still the real data.
Not TOU-2: Break even production + 350 kWh super off-peak = Pay for 350 kWh super off-peak
With TOu-2: Break even production + 350 kWh for charging = Get credit for 100+ kWh super-off peak.

That's a 450 kWh swing. Won't work nearly this well in winter but other than Dec-Jan the winter months is when I end up with the most surplus production. Time will tell but an estimate would be somewhere between $50 and $250 for 4200 kWh.

With EW you can figure out how this would work for you, even without the decimal. FWIW the meter seems to be precise.

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lonndoggie
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Re: Official California SDG&E Thread

Sat Aug 13, 2011 8:52 pm

SanDust wrote: Not TOU-2: Break even production + 350 kWh super off-peak = Pay for 350 kWh super off-peak
With TOu-2: Break even production + 350 kWh for charging = Get credit for 100+ kWh super-off peak.

That's a 450 kWh swing. Won't work nearly this well in winter but other than Dec-Jan the winter months is when I end up with the most surplus production.
Interesting. That's when I end up with no surplus production, and quite a bit of consumption.
SanDust wrote: Time will tell but an estimate would be somewhere between $50 and $250 for 4200 kWh.

With EW you can figure out how this would work for you, even without the decimal. FWIW the meter seems to be precise.
Which, as I've said, is what I'm doing.

So far--with only about a month's worth of data with the EV meter in place (and one week of that not too meaningful, as we were out of the country, so no EV charging)--EV-TOU-2 would have saved us a little under $60. Damn, that's good! Would've been less had we been charging for that extra week. And, we'll see how it goes once those low-PV-production months come around.

Yes, the meter data is more precise--Matt from the ET Project sent me a spreadsheet with 15 minute data from my meter, which shows values down to the wH. That also showed why, in a full month that I never used the Blink to charge a Leaf (and I even had it unplugged a significant amount of time), I still pulled 9kWh per that meter. Energy Wave showed 0kWh for that whole period--insufficient precision. But those 5 wH intervals add up!
Res: 4/20, RAQ: 10/1, Order: 10/7
EV Proj OK 9/17, install 4/19, 2nd meter 5/5
Pend > Apr/11 > 4/15 > 4/19 > 4/15 > 4/18 > 4/22 > 6/14 > 6/16 > 6/22
Delivered 6/15!!
VIN: 2494
Ocean Blue eTec
7.36kW DC PV Array

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DaveEV
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Location: San Diego

Re: Official California SDG&E Thread

Sat Aug 13, 2011 11:03 pm

lonndoggie wrote:Yes, the meter data is more precise--Matt from the ET Project sent me a spreadsheet with 15 minute data from my meter, which shows values down to the wH.
Did you happen to ask if they are planning on improving the accuracy of the Energy Wave site? My last email with this question didn't get an answer.

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lonndoggie
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Re: Official California SDG&E Thread

Sat Aug 13, 2011 11:28 pm

drees wrote: Did you happen to ask if they are planning on improving the accuracy of the Energy Wave site? My last email with this question didn't get an answer.
No, but I did say that would be a good thing, and might prevent crank calls from people like me who ask how come you're showing 9kWh of usage on my bill, but I see zero on Energy Waves! :twisted:
Res: 4/20, RAQ: 10/1, Order: 10/7
EV Proj OK 9/17, install 4/19, 2nd meter 5/5
Pend > Apr/11 > 4/15 > 4/19 > 4/15 > 4/18 > 4/22 > 6/14 > 6/16 > 6/22
Delivered 6/15!!
VIN: 2494
Ocean Blue eTec
7.36kW DC PV Array

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wsbca
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Delivery Date: 0- 0-2011
Location: SL-E powered by 3KW AC Solar in SoCal

Re: Official California SDG&E Thread

Fri Oct 07, 2011 4:04 pm

Just got an email regarding AB920 excess generation...our true up date was in July. There's new info on the net metering page on the SDG&E site as well:

"The compensation price is a rolling average based on the utility’s Default Load Aggregation Point (DLAP) price from 7 a.m. to 5 p.m. This is a wholesale market price that the utility pays other generators. It is currently averaging just under 4 cents per kwhr. "

The actual rate worked out to ~3.6c per kWh - there's a table of the monthly average rates. Pretty disappointing - previous hopes/estimates were more like 6-7c, some even hoped for tier 1 DR retail....the CPUC really rolled over for them. There is a certain logic to the wholesale market price thing...except that's not necessarily clean power, in fact almost surely not, which in theory should be far more valuable to them given the fact that they are so far behind on the legislated renewable mix target. Makes it more clear that anyone with significant excess before they got their car is better off with no second meter, since they'd be paying 6,7,or 14 on the second meter and only getting 3.6 back on their house account. There probably aren't too many of them (us) though.

What has me perplexed (soon to be miffed, I have little doubt) is I was explicitly told that as an alternative to receiving a check, or a billing credit for the calculated dollars, there would be the option to roll over the raw kWh and use them in the future on a 1-1 basis against future usage. I see no option/mechanism for that. I've sent an email, waiting for the prevarication or the claim that they never said that. Maybe a bit of a moot point since now that we have the car, we're not realistically going to be a net producer in future years (in fact at the given rate I'll make sure we aren't), it's more the principle of the thing...and that we had 1000+kWh banked that I wanted to be able to turn into 3200 Leaf miles as needed, not 800 Leaf miles which is how it will effectively work out now.
I was promised a jet pack!

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wsbca
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Re: Official California SDG&E Thread

Fri Oct 07, 2011 4:15 pm

Following up my own post, I just found this on the CPUC site, which goes a little way toward explaining the low compensation rate:

On the Horizon: Financial Gain from Renewable Attributes
The California Energy Commission (CEC) is currently working on Renewable Portfolio (RPS) certification and
Renewable Energy Credit (REC) ownership verification and tracking protocols. Once this is completed net surplus
generators may be compensated at the net surplus compensation rate plus an adder for their renewable attributes
based on an interim proxy rate derived from the Western Electricity Coordinating Council (WECC) average
renewable energy premium, published by the Department of Energy (DOE).
If the CEC authorizes retroactive RPS certification of net surplus generators, the utilities may retroactively pay the
renewable attribute adder to its eligible customers. Net surplus generators who do not own or do not transfer their
renewable attributes to the utility purchasing their excess generation will be compensated at the net surplus
compensation rate without the renewable attribute adder.
So perhaps the rate will creep up. The "if...may retroactively pay" part sounds a little wishy washy, and the "adder" surely won't be much, but at least they are pursuing the concept. I'm all in favor of the utility getting credit for renewables in their service area as long as it's done somewhat equitably.
I was promised a jet pack!

solartim
Posts: 53
Joined: Wed May 25, 2011 12:48 pm
Location: San Diego

Re: Official California SDG&E Thread

Fri Oct 07, 2011 5:56 pm

I guess this is why they need the higher solar connection fees:

http://www.mynissanleaf.com/viewtopic.p ... 58&start=0" onclick="window.open(this.href);return false;

We had 1700 kW extra on our house next year, for a whopping $65, we rocked a 0.03775 credit rate. Better than paying though. We won't have excess any more, since we're on track for about 8 - 9 k on the car this year. The solar ROI really improved now without paying for gas.

I had looked into TOU when we put the solar on, and there was a monthly fee, around $5 I think. We're sticking with one meter on regular use rates.

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wsbca
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Re: Official California SDG&E Thread

Tue Nov 15, 2011 5:30 pm

Got an email from SDG&E today asking me to take a survey:
Help improve plug-in electric vehicle service and earn a $10 incentive

Dear %%FIRST_NAME%%[sic],

Please take approximately ten minutes to complete a survey about your LEAF™ use and charging habits. You will earn a $10 incentive for your time.*
Anybody else receive this yet? Have you taken it?
I was promised a jet pack!

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DaveEV
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Re: Official California SDG&E Thread

Tue Nov 15, 2011 5:42 pm

Yep, did that earlier today.

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