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Todd,<br>
<br>
You are getting credit for all the energy your system can produce.
Turn off the humidify and you'll see the power factor go up to nearly
1.0. That's what the inverter is operating at, regardless of whether
the humidifier is on or off. <br>
<br>
Say the PF is 80% without the inverter running. That means the utility
is providing some reactive power or VARs. With the inverter running,
the real power delivered by the utility is reduced, but the reactive
power is not changed. To see it mathematically: the VA delivered by
the utility is the square root of the sum of the squares of VAR and
Watts. PF = W/VA = W/sqrt(W^2+VAR^2). Reduce W without changing VAR
and the power factor goes down, possibly even to zero.<br>
<br>
Kent Osterberg<br>
Blue Mountain Solar<br>
<br>
<br>
<br>
<br>
<a class="moz-txt-link-abbreviated" href="mailto:toddcory@finestplanet.com">toddcory@finestplanet.com</a> wrote:
<blockquote cite="mid:1273855446.08189876@192.168.2.230" type="cite"><font
face="arial" size="4"><font size="3">I have a question about my
personal home system. It is an Outback battery based grid tie. My
digital utility meter is capable of reading var and power factor. So
often (like just now) when I read this it is not even close to unity.
Today's reading was 1.57 VAR, 56 PF.</font><font size="3"> What is
going on here? Am I not being credited for everything I am selling? The
only significant load I have running is a dehumidifier... so an
inductive load.<br>
<br>
Todd<br>
</font></font>
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