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<DIV>All,</DIV>
<DIV> </DIV>
<DIV> Great points and a
little education of others' feelings about, essentially how granular we
need to be in monitoring. </DIV>
<DIV> </DIV>
<DIV> I'm curious who is monitoring the
Enphase systems in the solar world, seriously. I know 95% of my customers
are more concerned about catching the bus or what's for dinner than if PV #8 has
bird crap on it. Do the folks at Enphase, through Enlighten have some
software that spots issues? I know I, as an installer don't have time for
it. My experience is the customer notices their power bill was higher last
month, they take a look at the inverter and no green light...CALL BILL.</DIV>
<DIV> </DIV>
<DIV> Thanks folks for the resources for
meters, din rail too.</DIV>
<DIV> </DIV>
<DIV>Bill</DIV>
<DIV> </DIV>
<DIV><IMG alt="" hspace=0 src="cid:EB4224DD5F9B46AB982276B2C95CD07B@D8XG8YH1"
align=baseline border=0></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=glenn.burt@glbcc.com href="mailto:glenn.burt@glbcc.com">Glenn
Burt</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=re-wrenches@lists.re-wrenches.org
href="mailto:re-wrenches@lists.re-wrenches.org">'RE-wrenches'</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, September 29, 2014 5:17
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [RE-wrenches] Metering</DIV>
<DIV><BR></DIV>
<DIV class=WordSection1>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">I
would not classify what we are doing in PV as SCADA.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">It
is purely data acquisition at this point, and more commonly referred to as DAS
or a Data Acquisition System.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">SCADA
by its definition entails a two way path of both receiving data and being able
to send control signals, usually from a big picture program, monitoring dozens
of data points.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Lets
not try to make the simple into a more complex thing than it
is.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">-Glenn<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<DIV>
<DIV
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; PADDING-TOP: 3pt; BORDER-BOTTOM: medium none">
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: 'Tahoma','sans-serif'">
RE-wrenches [mailto:re-wrenches-bounces@lists.re-wrenches.org] <B>On Behalf Of
</B>Ray Walters<BR><B>Sent:</B> Monday, September 29, 2014 2:31
PM<BR><B>To:</B> RE-wrenches<BR><B>Subject:</B> Re: [RE-wrenches]
Metering<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<P class=MsoNormal>The 2nd problem with the Envoy besides cost is that it
isn't always reliable. Communication through power lines is not a
new or fresh idea, and has Always been problematic. Once you install
something you are expected to make it work, and that can be a nightmare on say
an 8 module system that keeps losing communication to one or two
modules. I've had this exact case, and confirmed multiple times that
each micro was working, but the Envoy had other ideas.<BR>This rush to mega
data acquisition makes sense for larger PPA systems, but can just add tons of
call backs and the resulting financial losses and frustrations for small
systems.<BR>I've spent as much time messing with SCADA, as I have with the
entire install itself; now that's ridiculous. This isn't new
either: I had SCADA systems back in the 90s, that had great
promise, but ultimately were extremely hard to implement, and the customer
never used after anyway......<BR>The question is: <BR>What does the customer
really need to operate the system vs. "bells and
whistles".....<BR><BR><o:p></o:p></P><PRE>R.Ray Walters<o:p></o:p></PRE><PRE>CTO, Solarray, Inc<o:p></o:p></PRE><PRE>Nabcep Certified PV Installer, <o:p></o:p></PRE><PRE>Licensed Master Electrician<o:p></o:p></PRE><PRE>Solar Design Engineer<o:p></o:p></PRE><PRE>303 505-8760<o:p></o:p></PRE>
<P class=MsoNormal>On 9/29/2014 12:12 PM, August Goers
wrote:<o:p></o:p></P></DIV>
<BLOCKQUOTE style="MARGIN-TOP: 5pt; MARGIN-BOTTOM: 5pt">
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #44546a; FONT-FAMILY: 'Calibri','sans-serif'">Hi
Bill,</SPAN><o:p></o:p></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #44546a; FONT-FAMILY: 'Calibri','sans-serif'"> </SPAN><o:p></o:p></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #44546a; FONT-FAMILY: 'Calibri','sans-serif'">One
of the largest benefits of the microinverter system, in my opinion, is the
ability to monitor each module individually. It might seem like ~$500 is a
lot for the Envoy but I think it is well worth it when you think about the
25 year warranty period and included ongoing monitoring. Weve had enough
Enphase failures that I would personally really want to be able to keep my
eye on each micro individually.</SPAN><o:p></o:p></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #44546a; FONT-FAMILY: 'Calibri','sans-serif'"> </SPAN><o:p></o:p></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #44546a; FONT-FAMILY: 'Calibri','sans-serif'">Just
a thought, August</SPAN><o:p></o:p></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #44546a; FONT-FAMILY: 'Calibri','sans-serif'"> </SPAN><o:p></o:p></P>
<DIV>
<DIV
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; PADDING-TOP: 3pt; BORDER-BOTTOM: medium none">
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'"> RE-wrenches
[mailto:<A
href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</A>]
<B>On Behalf Of </B>frenergy<BR><B>Sent:</B> Sunday, September 28, 2014 2:26
PM<BR><B>To:</B> RE-wrenches<BR><B>Subject:</B> [RE-wrenches]
Metering</SPAN><o:p></o:p></P></DIV></DIV>
<P class=MsoNormal> <o:p></o:p></P>
<DIV>
<P class=MsoNormal>CA wrenches,<o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> I'm trying to (for
the sake of my monetarily impaired customers) figure out a less expensive
way to meter/monitor small enphase systems. One of my local utilities
will allow me to just use a remanufactured utility-grade meter (ala AEE)
These meters are inexpensive, robust and accurate but only display total
production. <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> The Envoy retails
for over $5 bills. Most of my customers are not interested in checking
their PV system on the internet, well not after a couple weeks. I
can't seem to find any requirement from PG&E other than in Section
5.1 of the guidebook: " All systems receiving an EPBB incentive must
install a production meter accurate to +- 5% of actual system
output...." which is pretty vague.
plus the is no CSI incentive anymore.<o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> Anybody have a
suggestion that is different from the remanu utility meter?....and possibly
gives current wattage output, and is "approved" by PG&E
interconnection?<o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal>TIA<o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal>Bill<o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><IMG id=_x0000_i1025 height=103
src="cid:43FB8B09997F41CD834DFC98FAF32CDC@D8XG8YH1" width=306
border=0><o:p></o:p></P></DIV>
<P class=MsoNormal><BR><BR><BR><o:p></o:p></P><PRE>_______________________________________________<o:p></o:p></PRE><PRE>List sponsored by Redwood Alliance<o:p></o:p></PRE><PRE><o:p> </o:p></PRE><PRE>List Address: <A href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</A><o:p></o:p></PRE><PRE><o:p> </o:p></PRE><PRE>Change listserver email address & settings:<o:p></o:p></PRE><PRE><A href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</A><o:p></o:p></PRE><PRE><o:p> </o:p></PRE><PRE>List-Archive: <A href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</A><o:p></o:p></PRE><PRE><o:p> </o:p></PRE><PRE>List rules & etiquette:<o:p></o:p></PRE><PRE><A href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</A><o:p></o:p></PRE><PRE><o:p> </o:p></PRE><PRE>Check out or update participant bios:<o:p></o:p></PRE><PRE><A href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</A><o:p></o:p></PRE><PRE><o:p> </o:p></PRE></BLOCKQUOTE>
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