[RE-wrenches] Availability of Powerwall Batteries

[August Goers]

I’m chiming in a bit late on this one.



Solaredge is compatible with SunPower. See the P400:



http://www.solaredge.us/groups/us/powerbox/module-add-on



Solarege has been very popular in the Bay Area among SunPower and
non-SunPower dealers.



I’ve attended a Tesla Powerwall training and the product is coming but it
will probably be a slow and limited rollout (just my gut based on what I
saw). The 400 volt battery output in particular will be the most
revolutionary part of the product in my opinion. The Storedge product is
their 1st gen battery product (I believe) so only time will tell how it
works:



http://www.solaredge.us/groups/us/products/storedge



I’m not convinced that any of the other lithium products are ready for
prime time. They are expensive and I don’t personally want to spend the
time or money to experiment with them at this point. That said, we recently
commissioned our first dual Schneider XW+ system with AGMs and besides a
few hiccups, it looks like a very customizable and clean package. I agree
that storage is the future and certainly the reduced size and increased
cycling ability of lithiums make them very appealing.



Cheers,



August

Luminalt



*From:* RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On
Behalf Of *Peter Parrish
*Sent:* Sunday, January 17, 2016 11:07 AM
*To:* 'RE-wrenches'
*Cc:* peter.parrish at solargnosis.com
*Subject:* [RE-wrenches] Availability of Powerwall Batteries



I have a residential client who wants a grid tied PV system with battery
backup. The client wants everything to be top of the line: Sunpower
modules. Tesla Powerwall batteries.



Unfortunately, I have been spending time recently researching "smart energy
storage" for commercial applications focusing on peak demand shaving. These
are 480 V 3-phase systems with 30 kW inverters and 48+ kWh Lithium
technology batteries. I think I am beginning to understand the performance
trade-offs and how these systems can complement PV to reduce demand charges
as well as usage charges.



My problem, is that I have not spent as much time researching the newer
residential GTBB offerings. I have studied the Juicebox offering –
Schneider XW5548 plus NMC Lithium batteries -- but that’s about it. I don’t
know the default vendor for the NMC batteries and if not Powerwall, could
Powerwall be a replacement?



Otherwise, does anyone know how to access the Powerwall offerings?  Also
has anyone had success getting a rebate in CA through the SGIP/AES program?
I know to qualify for SGIP one needs to demonstrate load shifting as
opposed to (or in addition to BB).



There seems to be an offering from Solaredge (Storedge), but it is not
clear their optimizers work with the 96 cell Sunpower X21-345, for example.



I am convinced that smart storage will become more important over time, and
I would like to use this customer to “get smart”, and prepare for future
business of this sort.



Any practical knowledge would be greatly appreciated. I am happy to
exchange information on commercial demand management offerings.



-          Peter



Peter T. Parrish, Ph.D.

President, SolarGnosis

1107 Fair Oaks Ave., Ste. 351

South Pasadena, CA 91030

(323) 839-6108

NABCEP Certified PV Installation Professional #031806-26

peter.parrish at solargnosis.com
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