Still not clear, at least to me. Batteries - both lead and lithium - seem to be able to hold a charge for months with little loss. In practice for grid storage, I would think normally a week would be an unusually long duration.

Peri

------ Original Message ------
From: "Mark Abramowitz" <[email protected]>
To: "Peri Hartman" <[email protected]>
Cc: "Electric Vehicle Discussion List" <[email protected]>; "David Nelson" <[email protected]>; "brucedp5" <[email protected]>; "Electric Vehicle Discussion List" <[email protected]>
Sent: 29-May-16 2:16:05 PM
Subject: Re: Re[2]: [EVDL] Old packs as powerwalls @L3 EVSE sites to help smooth out the grid, +more

The limited ability of batteries to store energy for long periods of time.

- Mark Abramowitz (speaking for myself)
President, Community Environmental Services

Senior Advisor and Immediate Past Chairman, California Hydrogen Business Council

Board Consultant to Dr. Joseph K. Lyou, Governor's Appointee to the South Coast Air Quality Management District Governing Board

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From: "Peri Hartman" <[email protected]>To: [email protected], "Electric Vehicle Discussion List" <[email protected]>CC: "David Nelson" <[email protected]>, brucedp5 <[email protected]>, "Electric Vehicle Discussion List" <[email protected]>Subject: Re[2]: [EVDL] Old packs as powerwalls @L3 EVSE sites to help smooth out the grid, +moreDate: 5/29/16, 2:10 PM


Why do you say "over long periods of time, not so much?" I would agree it's hard to say whether we can attain enough used batteries for grid scale - depends on how many EVs are produced and how fast we ramp down mined-resource energy generation.

Peri

------ Original Message ------
From: "Mark Abramowitz" <[email protected]>
To: "Peri Hartman" <[email protected]>; "Electric Vehicle Discussion List" <[email protected]> Cc: "David Nelson" <[email protected]>; "brucedp5" <[email protected]>; "Electric Vehicle Discussion List" <[email protected]>
Sent: 29-May-16 2:06:52 PM
Subject: Re: [EVDL] Old packs as powerwalls @L3 EVSE sites to help smooth out the grid, +more
I agree with you on this...to a point.

For small scale and short time periods, batteries are great. For grid scale over long periods of time... not so much.


- Mark Abramowitz (speaking for myself)
President, Community Environmental Services

Senior Advisor and Immediate Past Chairman, California Hydrogen Business Council

Board Consultant to Dr. Joseph K. Lyou, Governor's Appointee to the South Coast Air Quality Management District Governing Board

Sent from AltaMail



From: Peri Hartman via EV <[email protected]>To: "David Nelson" <[email protected]>, brucedp5 <[email protected]>, "Electric Vehicle Discussion List" <[email protected]>Subject: Re: [EVDL] Old packs as powerwalls @L3 EVSE sites to help smooth out the grid, +moreDate: 5/29/16, 12:52 PM

I definitely would like to see incentives for installing "depleted"
batteries as solar and wind backup.

We're at a point in time where we can promote both wind and solar while
winding down coal and gas power generation. Clearly, before we can
retire all mined-resource power generation (primarily coal, gas,
nuclear), we need ways to store power for times when wind and solar
don't generate enough.

Soon, we will begin to see a flood of depleted batteries from EVs. With incentives, the price offered for these used batteries would be higher, helping to lift the value of used EVs and increasing the demand for new
EVs while at the same time helping to build our wind and solar
infrastructure.

In other words, right now, the need for utility level battery storage is
low. But, gradually, as we retire coal & other plants, we can be
building utility battery storage and boosting EV production and sales.

The sooner, the better, in my opinion.

Peri

------ Original Message ------
From: "David Nelson via EV" <[email protected]>
To: "brucedp5" <[email protected]>; "Electric Vehicle Discussion
List" <[email protected]>
Sent: 29-May-16 12:43:01 PM
Subject: Re: [EVDL] Old packs as powerwalls @L3 EVSE sites to help
smooth out the grid, +more

>On Thu, May 19, 2016 at 1:46 AM, brucedp5 via EV <[email protected]>
>wrote:
>
>>
>>
>> Why aren't they installing these power-walls at well used L3 EVSE
>>stations?
>> Is there a major utility complaint that highly used L3 EVSE puts a
>>high
>> demand on the grid?
>> That the EV's power demand during peak HVAC power periods are counter
>> productive?
>>
>> I think that a prime candidate is this L3 station at Arlington City
>>Hall,
>OR (http://api.plugshare.com/view/location/47270). It is in a "desert"
>of
>charging stations along I-84 and looking at the comments it is the
>power
>company that is charging too much. Too bad the owner just doesn't put
>the
>cost to charge to what it would cost for the power, at least initially.
>
>Even a battery unit that didn't have enough to fully charge a car could
>be
>used in combination with the grid where the grid is used to just below
>the
>demand charge threshold and the battery supplying the rest. When the
>car
>stops charging the battery unit would charge back up in anticipation of
>the
>next vehicle.
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