solarchargeddriver
Posts: 49
Joined: Wed Dec 29, 2010 9:07 pm
Delivery Date: 28 Jan 2015
Location: Colorado
Contact: Website

Anyone banking their extra solar kWh?

Thu Jun 23, 2011 9:14 am

I'm really curious if anyone is doing what we are doing in Colorado Xcel Energy territory, and if any other utilities allow banking of home solar kWh over-production.

We had a 5.59 kW solar system installed on our Aurora, Colo. rooftop almost exactly a year ago, partly in anticipation of powering a new LEAF with it. Well, we're still waiting, and waiting, and waiting on that EV ;-)

In the meantime, our system has overproduced by more than 5,000 kWh -- we've used about 3,600 kWh to power our home, meaning our system has produced a total of about 8,600 kWh in its first year. Xcel allows homeowners to bank these excess solar kWh indefinitely. This is definitely a much better choice than getting paid out for them, as Xcel charges 11 cents per kWh and pays solar over-producers a paltry 3 cents per kilowatt hour!

Again, I'm wondering if anyone else out there is doing the same thing: Banking excess solar kWh in anticipation of using them later for an EV.

If you are, it would be great to know:

1. The size of your system and how long you've had it;
2. What state/city you live in who your utility is that allows solar kWh banking;
3. How many kWh you've banked so far;
4. Whether you have a LEAF already and are still solar banking, or, if, like us, you're waiting on one while banking.

Ideally, I'd like to use this info for an entry I'd like to do on utility banking of extra solar kWh for SolarChargedDriving.Com -- http://solarchargeddriving.com

Thank you.

Cheers,
Christof Demont-Heinrich
-- 2014 LEAF SV, 2-year lease, Feb. 2014 - March 2016
5.6 kW home solar system

91040
Posts: 1012
Joined: Fri Mar 11, 2011 10:36 pm
Delivery Date: 06 May 2011
Location: Los Angeles, CA

Re: Anyone banking their extra solar kWh?

Thu Jun 23, 2011 10:15 am

Los Angeles DWP gives credit for solar electric overproduction based on the rate in effect at the time of production. This credit cannot be paid out but is available as long as the account is maintained. It can only be used for purchase of electricity from LADWP and other associated charges.
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kieodadie
Posts: 42
Joined: Sun Sep 05, 2010 9:15 am
Delivery Date: 17 Jun 2011
Leaf Number: 4240
Location: Dinuba, Ca

Re: Anyone banking their extra solar kWh?

Thu Jun 23, 2011 10:41 am

I live in California and PGE is not banking the extra Kwh my system produce but I will get a check at the end of the year because of the buy back program.

5.0 Kwh
Dinuba, Ca
Leaf delivery 4/17/2011

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mwalsh
Posts: 9644
Joined: Thu Apr 22, 2010 10:10 am
Delivery Date: 05 Jan 2011
Leaf Number: 0213
Location: Garden Grove, CA

Re: Anyone banking their extra solar kWh?

Thu Jun 23, 2011 11:43 am

We're on whole house TOU with SCE, with our monthly base allowance broken up across the three rates (Peak, Off-Peak, and Super Off-Peak), so it's a bit more complex than a straight generated this, used that scenario.

But, in any case, we've generated 2500kWh since the meter went in a couple of months ago and we've used 1400kWh. Now, we'd have used a bit more if I was actually working full-time (currently furloughed 2 days a week, so using approximately 35kWh less a week), and I expect to use the credit we'll have "banked" over the long summer months once we get into lesser winter production. But I may still get a small check at the end of the year. :D
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Boomer23
Posts: 3550
Joined: Sun May 23, 2010 9:57 pm
Delivery Date: 30 Mar 2011
Location: Orange County, CA

Re: Anyone banking their extra solar kWh?

Thu Jun 23, 2011 12:07 pm

In California with SCE also. SCE allows annual net metering but zeroes out the account annually. In previous years we've received "bupkis" (zero, nada, zilch) for our overproduction, but this year SCE will pay some paltry amount, the amount per kWh still pending agreement with the PUC.

I overproduced about 2,200 kWh last year, before receiving my LEAF. I expect to underproduce this year, but still have a net bill of zero due to TOU rates.
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ahagge
Posts: 298
Joined: Mon Aug 30, 2010 8:38 am
Delivery Date: 02 Jul 2011
Leaf Number: 5175
Location: Northridge, CA

Re: Anyone banking their extra solar kWh?

Thu Jun 23, 2011 12:13 pm

91040 wrote:Los Angeles DWP gives credit for solar electric overproduction based on the rate in effect at the time of production. This credit cannot be paid out but is available as long as the account is maintained. It can only be used for purchase of electricity from LADWP and other associated charges.
Are you certain of this? Do you have a URL with details? I was told that LADWP has a "net metering" system that will only allow you to offset your use with your production within a certain "window" - but - I've never found clarification as to what that "window" is - it might be only one billing cycle (two months), it might be as much as a year. But I'd always heard that excess capacity cannot be banked, cashed out or otherwise used. It's "use it within the window or lose it".

I'd love to hear differently...
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LEAFfan
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Delivery Date: 08 Jun 2011
Leaf Number: 1855
Location: Phoenix Area

Re: Anyone banking their extra solar kWh?

Thu Jun 23, 2011 12:46 pm

Here, our utility pays around .03/kwh for any excess on April 30. We aren't allowed to 'bank' them for more than a year. So my strategy is to use them all up before April 30. :mrgreen:
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91040
Posts: 1012
Joined: Fri Mar 11, 2011 10:36 pm
Delivery Date: 06 May 2011
Location: Los Angeles, CA

Re: Anyone banking their extra solar kWh?

Thu Jun 23, 2011 12:58 pm

ahagge wrote:
91040 wrote:Los Angeles DWP gives credit for solar electric overproduction based on the rate in effect at the time of production. This credit cannot be paid out but is available as long as the account is maintained. It can only be used for purchase of electricity from LADWP and other associated charges.
Are you certain of this? Do you have a URL with details? I was told that LADWP has a "net metering" system that will only allow you to offset your use with your production within a certain "window" - but - I've never found clarification as to what that "window" is - it might be only one billing cycle (two months), it might be as much as a year. But I'd always heard that excess capacity cannot be banked, cashed out or otherwise used. It's "use it within the window or lose it".

I'd love to hear differently...
http://www.ladwp.com/ladwp/cms/ladwp000787.jsp
http://www.ladwp.com/ladwp/cms/ladwp013472.pdf

SOLAR INFORMATIONAL Q & A

Q: I have credits in the bank, and I didn’t use any power from LADWP, why is my bill $22.00?
A: You are on the residential standard rate R1A. Under this rate, there is a minimum charge of $10 per month, plus ECA, RCA, ESA, City Tax, and State Surcharges. If your energy charge is less than $10 monthly, you will receive a bill for the minimum charge of $10 per month. Residents are usually billed bi-monthly, so the minimum bill would be $20 plus $2 city tax for a total of $22. It may be more beneficial for you to be on the residential Time-of-Use (TOU) rate, R1B.

Q: I am billed on the Residential Rate R-1A. I have credits in the bank, why do I still have a bill to pay?
A: Your banked credits ONLY apply towards your Energy Charge, as long as your energy charge is greater than the minimum charge ($10 monthly/$20 bi-monthly).

Q: I am billed on the Residential TOU Rate R-1B, what part of my bill do my banked credits apply towards?
A: Your banked credits apply towards all the LADWP charges (Service Charge, Energy Charge, ECA, ESA, and RCA charges). Banked credits DO NOT apply towards taxes (City, State Surcharge).

Q: I am billed on Residential TOU Rate R-1B, how much money do I get for my credits?
A: Credits are earned at the dollar value during the time period that you generate your power. If you generate more energy during the high-peak period, your credit will be at the high peak price. It is then applied to your total bill, except to the taxes (City, State Surcharge).

Q: How long do my credits last – is there an expiration date on the credits?
A: Your credits will go into a credit “bank”. There is no time limit for your credits. If you move out of your house or close your electric account, any previously banked credits are not refunded. You cannot transfer credits to another residence when you move.

Q: How do I request to be billed on TOU?
A: If you are a new solar customer waiting for your LADWP final inspection, please contact LADWP’s Solar Department at (213) 367-4122. If you’re an existing solar customer, please call the Rates Section at (213) 367-4718 and request a customer request form to change your billing to the optional R-1B Rate. The Rates Section can email, fax or mail you a request form.

Q: Why is my electric bill delayed?
A: The process of billing our solar customers on R-1A or R-1B is a manual operation, as opposed to the non-solar customers which are billed through our automated system. This manual operation naturally causes a delay. We anticipate having a new billing system capable of billing all of our customers automatically within two years.

Q: My bill still seems high after the solar installation, why?
A: There are several reasons that this could happen, some include: 1) Your bill includes closing reads from your previous meter. 2) Electric usage in your household increased. Please contact LADWP’s Solar Department at (213) 367-4122 for an investigation into your usage.

Q: If I want information regarding my solar application, solar inspection/approval, or net TOU meter install before the solar panels are installed, who do I contact?
A: Contact LADWP’s Solar Department (213) 367-4122
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2nd- 49k mi 25.5mo 51.5Ah
3rd- 73k mi 36.5mo 46.9Ah
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5th- 101k mi 50.5mo 38.38Ah, end 36.13Ah
New Battery 9/28/15 104k mi 66.14Ah
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thankyouOB
Posts: 3583
Joined: Mon Feb 21, 2011 11:14 am
Delivery Date: 30 Apr 2011
Leaf Number: 1442
Location: Coastal LA

Re: Anyone banking their extra solar kWh?

Thu Jun 23, 2011 2:54 pm

ahagge wrote:
91040 wrote:Los Angeles DWP gives credit for solar electric overproduction based on the rate in effect at the time of production. This credit cannot be paid out but is available as long as the account is maintained. It can only be used for purchase of electricity from LADWP and other associated charges.
Are you certain of this? Do you have a URL with details? I was told that LADWP has a "net metering" system that will only allow you to offset your use with your production within a certain "window" - but - I've never found clarification as to what that "window" is - it might be only one billing cycle (two months), it might be as much as a year. But I'd always heard that excess capacity cannot be banked, cashed out or otherwise used. It's "use it within the window or lose it".

I'd love to hear differently...
Consider this hearing differently.
I have had solar since 2008 with LADWP and have the first issued residential TOU on a solar system, which went into service that Sept.
I have banked power most months (except for the dark times in winter) and it carries over year to year.
I am not sure who told you what, but this is the straight skinny.
The TOU rate is fantastic in the four summer months, and OK in the other 8. The base rate runs from 8pm to 10 am and all day Saturday and Sunday, which makes for effortless and copious charging times for me. In summer, it is 22 cents high peak versus 8 cents base, and the low peak rate is 14 cents.

There is even a 2.5-cent a kWh discount if you sign up for the EV rate and have a TOU meter.
You do not need to get a dedicated meter for the charger; whole house TOU qualifies you.
In addition, Ecotality will let you in the project under that whole-house TOU, if you have solar. You do not need to break up your service with a second meter dedicated to the Blink, as this totally screws the solar connection for car charging.

I suspect my banking days are over with the 300kWh/month to run the Leaf, but I will assess that after a year of use. RIght now, I have more than enough banked to cover that cost. The first month -- May -- I was assessed $8 for the car use and household electric, after net metering. That does not include the $8 service charge.
(the calculation is not straight-forward as the car was here for just over a month and the bill covers 60 days.)
Last edited by thankyouOB on Thu Jun 23, 2011 3:44 pm, edited 2 times in total.
may reserve/delivery 4/30/11
--
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klapauzius
Posts: 1658
Joined: Thu Feb 24, 2011 4:19 pm
Delivery Date: 25 Jan 2011
Leaf Number: 0197
Location: Seattle, Wa

Re: Anyone banking their extra solar kWh?

Thu Jun 23, 2011 3:18 pm

We have net-metering here in Washington, so in essence I can bank my kWH in a way ( i get a credit for extra kWH fed to the grid at the current purchase price in addition to production incentives for gross production). Alas, in this climate, ~ 1000 kWh per year and kW installed are probably the maximum you can get, so overproduction is not really an issue.

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