<div dir="ltr">I haven't installed this brand, Smappee, but I have installed a Verdegris Technologies unit, another nonintrusive load monitoring (focusing on commercial, while Smappee looks geared towards residential). According to wikipedia, the technology has been around since the 80's, and was invented at MIT. The Verdegris system works, in that it identifies individual loads without installing circuit-level CTs. <div><br></div><div>I've always been a huge proponent of the eGauge system, and I've added extra CTs to monitor specific loads at my own house and for many customers. But each CT is around $40-50, and the eGague system costs over twice what the Smappee costs. Agreed that there would be some tinkering to identify each unique load, but that has got to be less work than fussing with CTs for each circuit. </div><div><br></div><div>Some additional notes based on what I read on the Smappee website: </div><div>- the site says no monthly fees, so I assume the device acts as its own web server, like the eGuage. <br></div><div>- the Smappee installation manual lists current clamps only, not a voltage connection, so power readings will be approximate (there is a power plug to the unit but that would only cover 1 phase in a typical split phase house).</div><div>- for North American Smappee versions, they ship with only 100A (solar) and 200A (mains) CTs, but they don't note accuracy of those CTs. Most CTs have low accuracy at/below 10% of the rated load, so anything below the 20A range could be suspect. Conversely, eGuage goes through a load calculation to make sure the right size CTs are shipped to match the application.</div><div>- the Smappee installation manual lists various EC directive approvals, but nothing on UL approval.</div><div>- the comfort plug looks promising, adding the ability to turn off loads remotely. These also seem inexpensive; there are home automation systems available that are at least 3 times more expensive for the same functionality. </div><div><br></div><div>-</div><div>Phil Boutelle, P.E., C.E.M.</div><div>Energy Engineer</div><div><br><div><br></div><div> </div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Dec 29, 2014 at 12:43 PM, <span dir="ltr"><<a href="mailto:Jarmo.Venalainen@schneider-electric.com" target="_blank">Jarmo.Venalainen@schneider-electric.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><font face="sans-serif">Hi:</font>
<br>
<br><font face="sans-serif">Haven't seen such before and don't have
any experience with it, but personally I see this as a very cost effective
and powerful approach to load/energy monitoring.</font>
<br>
<br><font face="sans-serif">With just the one set of sensors, (two
if you have solar), you can gather a detailed load use and solar harvest
profile.</font>
<br>
<br><font face="sans-serif">Regarding identifying load signatures,
from what I can gather you wont need to tinker with it to get the data.
It will recognize and log the load data, it just wont know what the
various loads are called so they'll be labeled as LOAD1, LOAD2,....etc.</font>
<br>
<br><font face="sans-serif">Looking to the future, I'd be surprised
if you don't get firmware updates as their software engineers get better
and better at load recognition.</font>
<br>
<br><font face="sans-serif">I like this one.</font>
<br>
<br><font face="sans-serif">JARMO<br>
</font><font size="3" color="#008000">_____________________________________________________________________________________</font><font size="3">
<br>
</font><font size="1" face="Arial"><b><br>
Jarmo Venalainen</b> | </font><font size="1" color="#008000" face="Arial"><b>
Schneider Electric </b></font><font size="1" face="Arial"><b> | Solar
Business</b> | <b>CANADA</b> | <b>Training &
Development Specialist - Senior</b> <b><br>
Phone:</b> <a href="tel:%2B604-422-2528" value="+6044222528" target="_blank">+604-422-2528</a> | <b>Fax:</b> <a href="tel:%2B604-420-1591" value="+6044201591" target="_blank">+604-420-1591</a> |
<b>Mobile:</b> <a href="tel:%2B604-505-0291" value="+6045050291" target="_blank">+604-505-0291</a> <b><br>
Email:</b> </font><a href="mailto:jarmo.venalainen@schneider-electric.com" target="_blank"><font size="1" color="blue" face="Arial"><u>jarmo.venalainen@schneider-electric.com</u></font></a><font size="1" face="Arial">
| <b>Site:</b></font><a href="http://www.sesolar.com/" target="_blank"><font size="1" color="blue" face="Arial"><u>
www.SEsolar.com</u></font></a><font size="1" face="Arial"> |
<b>Address:</b> 3700 Gilmore Way, Burnaby, BC V5G4M1 <br>
</font><font size="1" color="blue" face="Arial"><u><br>
</u></font><a href="http://%20www.sesolar.com/" target="_blank"><img src="cid:_2_0D55D7800DDB48440071E42688257DBD"></a><font size="1" face="Arial"><br>
*** Please consider the environment before printing this e-mail</font><font size="3">
<br>
</font>
<br>
<br>
<br>
<table width="100%">
<tbody><tr valign="top">
<td><font size="1" color="#5f5f5f" face="sans-serif">From:</font>
</td><td><font size="1" face="sans-serif">"Kirk Herander" <<a href="mailto:kirk@vtsolar.com" target="_blank">kirk@vtsolar.com</a>></font>
</td></tr><tr valign="top">
<td><font size="1" color="#5f5f5f" face="sans-serif">To:</font>
</td><td><font size="1" face="sans-serif">"RE-wrenches" <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>>,
</font>
</td></tr><tr valign="top">
<td><font size="1" color="#5f5f5f" face="sans-serif">Date:</font>
</td><td><font size="1" face="sans-serif">12/29/2014 09:20 AM</font>
</td></tr><tr valign="top">
<td><font size="1" color="#5f5f5f" face="sans-serif">Subject:</font>
</td><td><font size="1" face="sans-serif">[RE-wrenches] Smappee anyone?</font>
</td></tr><tr valign="top">
<td><font size="1" color="#5f5f5f" face="sans-serif">Sent by:</font>
</td><td><font size="1" face="sans-serif">"RE-wrenches" <<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>></font></td></tr></tbody></table>
<br>
<hr noshade><div><div class="h5">
<br>
<br>
<br><font size="4" color="#004080" face="Calibri">Happy Holidays,</font>
<br><font size="4" color="#004080" face="Calibri"> </font>
<br><a href="http://blog.stefangrosjean.net/2014/08/30/find-my-appliances/" target="_blank"><font size="4" color="blue" face="Calibri"><u>http://blog.stefangrosjean.net/2014/08/30/find-my-appliances/</u></font></a>
<br><font size="4" color="#004080" face="Calibri"> </font>
<br><font size="4" color="#004080" face="Calibri">Here is a link to the inventor’s
website which explains the theory behind the “Smappee” energy monitor;
i.e. that each load has its own unique electrical use signature “DNA”
and that (over time) Smappee can identify such signatures and track them.
This without the need for plug-in modules or individual current transformers
on each load, which we have done in the past.</font>
<br><font size="4" color="#004080" face="Calibri"> </font>
<br><font size="4" color="#004080" face="Calibri">This originated in Europe,
I believe the Netherlands, and was launched in the US 12/10/14. They have
both a droid and iphone app, I found no reviews for the iphone.</font>
<br><font size="4" color="#004080" face="Calibri">Interesting in concept, but
if you read the inventor’s blog it sounds like it will take time for the
monitor to actually sort out multiple load signatures. And then the homeowner
has to label them as furnace, fridge, etc., for the monitor only knows
a particular signature is unique, it can’t identify an appliance on its
own. So it sounds to me a lot of potential tinkering would be required
for it to ultimately be useful. Definitely not a plug-and-play item. Anyone
perchance have experience with this? Thanks.</font>
<br><font size="4" color="#004080" face="Calibri"> </font>
<br><font size="4" face="Calibri"> </font>
<br><font size="4" face="Calibri"> </font>
<br><font size="4" face="Calibri"><b>Kirk Herander</b></font>
<br><font size="4" face="Calibri"><b>VT Solar, LLC </b></font>
<br><font size="4" face="Calibri"><b><i>Proven PV provider since 1991</i></b></font>
<br><a href="http://www.vermontsolarnow.com" target="_blank"><font size="4" color="blue" face="Calibri"><b><u>www.vermontsolarnow.com</u></b></font></a>
<br><font size="4" face="Calibri">dba Vermont Solar Engineering</font>
<br><font size="4" face="Calibri">NABCEP<sup>TM </sup>Inaugural Certificant</font>
<br><font size="4" face="Calibri">VT RE Incentive Program Partner</font>
<br><font size="4" face="Calibri"><a href="tel:802.863.1202" value="+18028631202" target="_blank">802.863.1202</a></font>
<br><font face="Calibri"> </font>
</div></div><p><font size="3"><br>
______________________________________________________________________<br>
This email has been scanned by the Symantec Email Security.cloud service.<br>
______________________________________________________________________</font><tt><font>_______________________________________________<br>
List sponsored by Redwood Alliance<br>
<br>
List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank">RE-wrenches@lists.re-wrenches.org</a><br>
<br>
Change listserver email address & settings:<br>
</font></tt><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank"><tt><font>http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</font></tt></a><tt><font><br>
<br>
List-Archive: </font></tt><a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html" target="_blank"><tt><font>http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</font></tt></a><tt><font><br>
<br>
List rules & etiquette:<br>
</font></tt><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank"><tt><font>www.re-wrenches.org/etiquette.htm</font></tt></a><tt><font><br>
<br>
Check out or update participant bios:<br>
</font></tt><a href="http://www.members.re-wrenches.org" target="_blank"><tt><font>www.members.re-wrenches.org</font></tt></a><tt><font><br>
<br>
</font></tt>
</p><p>
</p><p>
</p><p></p><p></p><br>_______________________________________________<br>
List sponsored by Redwood Alliance<br>
<br>
List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br>
<br>
Change listserver email address & settings:<br>
<a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br>
<br>
List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html" target="_blank">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</a><br>
<br>
List rules & etiquette:<br>
<a href="http://www.re-wrenches.org/etiquette.htm" target="_blank">www.re-wrenches.org/etiquette.htm</a><br>
<br>
Check out or update participant bios:<br>
<a href="http://www.members.re-wrenches.org" target="_blank">www.members.re-wrenches.org</a><br>
<br>
<br></blockquote></div><br></div>