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<p>There are many places these days where you can charge your car
for free. I believe the thinking is you get a few KW's from the
charger at the mall (not that many, they aren't very fast
chargers), however the mall is picking your pocket (I mean selling
you their goods) while you're shopping there. I see a potential
abuse though of leaving your car there all day, charging (free),
go home and sell those KW's to the grid during on-peak TOU. Human
nature....nasty stuff. They'll have to figure out how to make it
all fair and efficient.</p>
<p>Bill<br>
</p>
<pre class="moz-signature" cols="72">Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
<a class="moz-txt-link-abbreviated" href="http://www.frenergy.net">www.frenergy.net</a></pre>
<div class="moz-cite-prefix">On 2/22/2017 3:28 PM, Glenn Burt wrote:<br>
</div>
<blockquote cite="mid:20170222232850.9E7BA109F6@che.dreamhost.com"
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<div>
<div style="font-family: Calibri,sans-serif; font-size: 11pt;">I
think the Pika Energy also works at a high voltage with their
batteries. Technology seems to be quite similar to Store Edge.</div>
</div>
<div dir="ltr">
<hr><span style="font-family: Calibri,sans-serif; font-size:
11pt; font-weight: bold;">From: </span><span
style="font-family: Calibri,sans-serif; font-size: 11pt;"><a
moz-do-not-send="true"
href="mailto:bteitelbaum@aeesolar.com">Brian Teitelbaum</a></span><br>
<span style="font-family: Calibri,sans-serif; font-size: 11pt;
font-weight: bold;">Sent: </span><span style="font-family:
Calibri,sans-serif; font-size: 11pt;">2/22/2017 15:00</span><br>
<span style="font-family: Calibri,sans-serif; font-size: 11pt;
font-weight: bold;">To: </span><span style="font-family:
Calibri,sans-serif; font-size: 11pt;"><a
moz-do-not-send="true"
href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</a></span><br>
<span style="font-family: Calibri,sans-serif; font-size: 11pt;
font-weight: bold;">Subject: </span><span style="font-family:
Calibri,sans-serif; font-size: 11pt;">Re: [RE-wrenches]
Discharging a high voltage battery</span><br>
<br>
</div>
<div class="WordSection1">
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;">Hi Larry,</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;"> </span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;">This is not a new idea. It’s called
“Vehicle-to-Grid” or “V2G”, and is a big subject of
discussion in Europe.</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;"> </span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;">If everyone had an electric vehicle in
their driveway, it would represent a huge (yuge?)
distributed battery bank over the whole country. I think
that’s a great idea.</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;"> </span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;">As far as I know, the SolarEdge “StorEdge”
7.6 kW inverter is the only inverter with this capability
right now, although many other inverter companies are
working on inverters that can operate with high-voltage
batteries. The StorEdge is designed to work with the Tesla
home battery, which is basically a smaller version of the
Model-S battery pack. The inverter would have to be
programmable to work with the battery’s BMS, and limit the
discharge so that the vehicle’s battery is only drained to
some set-point. You wouldn’t want to completely drain the
battery, at least not if you want to use the vehicle.</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;"> </span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;">I doubt that it would make any economic
sense at this point in time, but the future is bright.</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;"> </span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;">Brian</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;">AEE Solar</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;"> </span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;"> </span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);
font-family: "Calibri","sans-serif";
font-size: 11pt;"> </span></p>
<div>
<div style="border-width: 1pt medium medium; border-style:
solid none none; border-color: rgb(181, 196, 223)
currentColor currentColor; padding: 3pt 0in 0in;
border-image: none;">
<p class="MsoNormal"><b><span style="font-family:
"Tahoma","sans-serif"; font-size:
10pt;">From:</span></b><span style="font-family:
"Tahoma","sans-serif"; font-size:
10pt;"> RE-wrenches [mailto:<a moz-do-not-send="true"
href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>]
<b>On Behalf Of </b>Starlight Solar Power Systems<br>
<b>Sent:</b> Wednesday, February 22, 2017 11:17 AM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> [RE-wrenches] Discharging a high voltage
battery</span></p>
</div>
</div>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Hello Wrenches,</p>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">Someone has asked me about discharging
their EV battery into the grid. They have an existing grit
tie system. What they want to do is connect a 5kW grid tie
inverter to their 340 volt, 32kWh EV battery bank and feed
the grid to discharge the battery. Why was not discussed but
sure bugs me. </p>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<p class="MsoNormal">My uneducated guess is the inverter
will be immediately damaged. My thought is how would it
limit the input current? Or, is there such an inverter
available that can do the job?</p>
</div>
<div>
<p class="MsoNormal"> </p>
</div>
<div>
<div>
<div>
<div>
<div>
<div>
<p class="MsoNormal">Any input is appreciated. </p>
</div>
<div>
<p class="MsoNormal"><br>
<span style="color: black; font-family:
"Helvetica","sans-serif";
font-size: 10.5pt;">Larry Crutcher</span><br>
<span style="color: black; font-family:
"Helvetica","sans-serif";
font-size: 10.5pt;">Starlight Solar Power
Systems</span></p>
</div>
</div>
</div>
<p class="MsoNormal"> </p>
</div>
<p class="MsoNormal" style="margin-bottom: 12pt;"> </p>
</div>
<p class="MsoNormal"> </p>
</div>
</div>
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