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<p>I was involved in Btu calculations in a previous life. Most HVAC
folks over kill it, instead of really doing the detailed room by
room calcs. <br>
</p>
<p>My guess is that your systems are working because:</p>
<p>A)There is really good insulation and air seal.</p>
<p>B) there is enough thermal mass to carry the house through the
high heat of the late afternoons.<br>
</p>
<pre class="moz-signature" cols="72">Ray Walters
Remote Solar
303 505-8760</pre>
<div class="moz-cite-prefix">On 9/12/20 5:09 PM, Dave Angelini
Offgrid Solar wrote:<br>
</div>
<blockquote type="cite"
cite="mid:0c666ecb3c784abbcf16fee03d539a74@127.0.0.1">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<p>Hi Ray,</p>
<p>They run at night set at 77f. We use a 1 ton, 12,000 btu and a
2nd spare for day use. The spare is rarely needed. These are
near 30 SEER, the most expensive model in each make. LG, Mitsu,
Fujitsu. Just after dawn when the array is lit, we drop the
program temp to 74 or so.</p>
<p>Most HVAC will tell you this won't work. I have been doing this
since 2007 when they started coming out in the US. They sip
power at night like a small child :) The HVAC people have the
mentality that you need to cool a hot house down in 30 minutes
and that is how they size. Offgrid, we never let it get that
hot, as we live there and can leave it on. There is no power
bill except the big one at the beginning!</p>
<p>There are a few other strategies I use also. Right now it is
full smoke here from the wildfires, the whole 1800 sqft house is
using 400 watts and it is 74 in and 86 outside. We often have
100 degree weather and it does use more. In smoke like this, the
split pressurizes the home and aids in keeping smoke outside
also. That is a very nice thing. Some of the folks in the area
just got PG &E back after the PSPS. Not fun for them! Take a
peek at my picture link on the webpage below.</p>
<div>
<pre> </pre>
<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" target="_blank" moz-do-not-send="true">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net" moz-do-not-send="true">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
</div>
<p>On Sat, 12 Sep 2020 15:51:39 -0600, Ray
<a class="moz-txt-link-rfc2396E" href="mailto:ray@solarray.com"><ray@solarray.com></a> wrote:</p>
<blockquote type="cite" style="padding-left:5px;
border-left:#1010ff 2px solid; margin-left:5px; width:100%"><!-- html ignored -->
<!-- head ignored -->
<!-- meta ignored -->
<p>What size Air Conditioners? Those seem like really small
battery banks for that. I suppose they just run in the day
mostly when the sun is shinning?</p>
<pre class="moz-signature">Ray Walters
Remote Solar
303 505-8760</pre>
<div class="moz-cite-prefix">On 9/12/20 3:25 PM, Dave Angelini
Offgrid Solar wrote:</div>
<blockquote type="cite" style="padding-left:5px;
border-left:#1010ff 2px solid; margin-left:5px; width:100%"><!-- meta ignored -->
<p>I have 5 clients in Florida running mini-split heat pumps
offgrid. The smallest is a 13 kwh useable and the rest
running L16 2v cells @ 48v nominal. Not trying to be a
contrarian but with a 2,000 square foot house with great
insulation and SEER numbers around 30, it is not that hard.
Need alot of solar, and virtual tracking for the afternoon
thunderstorms in the south also.</p>
<div>
<pre> </pre>
<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" moz-do-not-send="true">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net" moz-do-not-send="true">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
</div>
<p>On Sat, 12 Sep 2020 12:54:39 -0400, Jason Szumlanski <a
class="moz-txt-link-rfc2396E"
href="mailto:jason@floridasolardesigngroup.com"
moz-do-not-send="true"><jason@floridasolardesigngroup.com></a>
wrote:</p>
<blockquote style="padding-left: 5px; border-left: #1010ff 2px
solid; margin-left: 5px; width: 100%;">
<div dir="ltr">
<div class="gmail_default" style="font-family:
arial,helvetica,sans-serif;"> </div>
<div dir="ltr">
<div class="gmail_default" style="font-family:
arial,helvetica,sans-serif;">54kWh doesn't go far for
air conditioning in September in Southwest Florida.
Trust me. Most homes have $200+ electric bills at
$0.10/kWh this time of year, sometimes substantially
more.</div>
<div class="gmail_default" style="font-family:
arial,helvetica,sans-serif;"> </div>
<div class="gmail_default" style="font-family:
arial,helvetica,sans-serif;">Generator backup, even
with 4 Powerwalls, is necessary for mission-critical
grid-tied backup situations. Sadly, you can't charge
Powerwalls with a generator. You just bypass battery
storage and run loads straight off the generator,
which means the generator needs to be sized for the
whole home. It would be nice to have a generator input
for supplemental charging at least with a small
portable unit.</div>
<div class="gmail_default" style="font-family:
arial,helvetica,sans-serif;"> </div>
<div class="gmail_default" style="font-family:
arial,helvetica,sans-serif;">There is no perfect
solution for this application. At least no
cost-effective solution.</div>
<div class="gmail_default" style="font-family:
arial,helvetica,sans-serif;"> </div>
</div>
<br>
<div class="gmail_quote">
<div class="gmail_attr" dir="ltr">On Fri, Sep 11, 2020
at 6:06 PM August Goers <<a
href="mailto:august@luminalt.com"
moz-do-not-send="true">august@luminalt.com</a>>
wrote:</div>
<blockquote class="gmail_quote" style="margin: 0px 0px
0px 0.8ex; border-left: 1px solid #cccccc;
padding-left: 1ex;">
<div dir="ltr">Hi Bill -
<div> </div>
<div>I completely agree with your statement about
all off-grid applications. Most if not all need
generators. And, I do think there are some grid
tied applications where generators make sense too,
especially for folks who live way out in the woods
as you mention. I was speaking about the mass
market in CA in cities or towns where the grid is
typically fairly reliable. If you install four
Powerwalls, for example, you have up to 54 kWh of
storage available. There are applications where
generators make sense, and all these fires and
smoke and heat waves prove the point. I think AC
is critical for some parts of the country, and
energy storage + PV alone just won't cut it for
those critical applications.</div>
<div> </div>
<div>But, yes, good point.</div>
<div> </div>
<div>August
<div>
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<p> </p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div class="gmail_attr" dir="ltr">On Fri, Sep 11,
2020 at 2:33 PM frenergy <<a
href="mailto:frenergy@psln.com"
moz-do-not-send="true">frenergy@psln.com</a>>
wrote:</div>
<blockquote class="gmail_quote" style="margin: 0px
0px 0px 0.8ex; border-left: 1px solid #cccccc;
padding-left: 1ex;">
<div>
<p>August,</p>
<p> Quite frankly and with due
respect about the comment about more PV and
battery to forego the need for a generator, I
disagree. Those folks living off-grid in the
sticks (um,er, myself included), it would be a
very bad thing not to have Gen input. The
current situation here in Plumas county (and
many other counties right now) is another
perfect example. It is so smokey that my
daily KWhrs has been cut in half and of course
every other off-grid home is having the same
issue. This has been going on for almost a
month with only occasional breaks. There are
also CC failures, FET board craps out, other
excrement occurs.</p>
<p> We all know there are many
critical needs for power especially to run a
pump for fire protection, frig for food,
communication to know what the hell may coming
your way during some event (fire, flood, bad
weather) medical needs, etc. In the winter
there are at least a few times when there is
little or no sun for 1 maybe 2 weeks...that
gets to be a spendy array and battery.
Certainly, the idea of going that route works
for some scenarios but not off-grid.
Generators are still a much needed necessary
evil. Maybe its a big deal to incorporate
that feature in an inverter?? Sounds like
bean counting.</p>
<p>My $.02 worth</p>
<p>Bill</p>
<pre>Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
<a href="https://mailtrack.io/trace/link/e37b8134584cfc480c3ad6deab2b0b296c8da98a?url=http%3A%2F%2Fwww.frenergy.net&userId=1613865&signature=057ab7bbd77fff54" moz-do-not-send="true">www.frenergy.net</a></pre>
<div>On 9/11/2020 1:01 PM, August Goers wrote:</div>
<blockquote style="padding-left: 5px;
border-left: #1010ff 2px solid; margin-left:
5px; width: 100%;">
<div dir="ltr">In CA the market for ESS is
primarily grid tied support features driven
by SGIP + backup (public safety power
shutoffs, folks who live in less stable grid
areas, folks worried about natural
disasters) so the ESS is designed to replace
generators. This might be a little trickier
for areas that need air conditioning during
a grid outage (or for all electric homes),
but one tactic is just to go bigger with the
ESS and PV system. I guess what I'm saying
is that the value proposition might already
be getting better just to skip the generator
and go bigger with the storage. Even Generac
might be going that route.
<div> </div>
<div>August</div>
</div>
<br>
<div class="gmail_quote">
<div class="gmail_attr" dir="ltr">On Fri,
Sep 11, 2020 at 11:52 AM Jason Szumlanski
<<a
href="mailto:jason@floridasolardesigngroup.com"
moz-do-not-send="true">jason@floridasolardesigngroup.com</a>>
wrote:</div>
<blockquote class="gmail_quote"
style="margin: 0px 0px 0px 0.8ex;
border-left: 1px solid #cccccc;
padding-left: 1ex;">
<div dir="ltr">
<div dir="ltr">
<div style="font-family:
arial,helvetica,sans-serif;">We are
seeing tons of companies in Florida
offering Generac/Pika now. They
didn't do it when it was Pika, so
why would they now that it has an
orange label? Crazy. </div>
<div style="font-family:
arial,helvetica,sans-serif;"> </div>
<div style="font-family:
arial,helvetica,sans-serif;">No
generator input makes zero sense and
even less sense for a generator
manufacturer.</div>
<div style="font-family:
arial,helvetica,sans-serif;"> </div>
<div>
<div dir="ltr">
<div dir="ltr">
<div>
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div
style="text-align:
center;"> </div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div class="gmail_attr" dir="ltr">On
Fri, Sep 11, 2020 at 12:58 PM Chris
Schaefer <<a
href="mailto:chris@solarandwindfx.com"
moz-do-not-send="true">chris@solarandwindfx.com</a>>
wrote:</div>
<blockquote class="gmail_quote"
style="margin: 0px 0px 0px 0.8ex;
border-left: 1px solid #cccccc;
padding-left: 1ex;">
<div dir="ltr">Jeremy,
<div>Pika was bought out by
Generac and rebranded as their
PWR cell. Most of the old crew
from Pika are now working for
Generac. It's beyond me that
Generac bought them and yet they
still don't have a generator
input. That's why I could never
sign on to the Pika product
line. Good luck.</div>
<div> </div>
<div>Christopher</div>
</div>
<br>
<div class="gmail_quote">
<div class="gmail_attr" dir="ltr">On
Fri, Sep 11, 2020 at 11:00 AM
Jeremy Rodriguez <<a
href="mailto:allsolarjeremy@msn.com"
moz-do-not-send="true">allsolarjeremy@msn.com</a>>
wrote:</div>
<blockquote class="gmail_quote"
style="margin: 0px 0px 0px
0.8ex; border-left: 1px solid
#cccccc; padding-left: 1ex;">
<div dir="auto">If anyone has
any info on how to get a hold
of The former PIKA ENERGY
support group, please contact
me off list.
<div>Or if anyone knows where
one could get one of their
inverters rebuilt/repaired
let me know.<br>
<div><br>
<div dir="ltr">Jeremy
Rodriguez
<div>Solar Installation
/ <span
style="font-size:
13pt;">Design
Expert </span></div>
<div>
<div>All Solar, Inc.
<div>1463 M St<br>
<div>Penrose
Colorado 81240</div>
<div> </div>
<div>Sent by
Jeremy's iPhone.
Sorry for typos
and shorthand. </div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
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