Utility meter questioned [RE-wrenches]

[Keith Cronin]

William

We find it best on all systems to install an Ozaki meter or Emon meter to
measure system output as a validation tool for performance.

This eliminates any cloudiness with the utility meter issues.

Keith Cronin
President
Island Energy Solutions Inc.
Electrical Lic. C-25221
270 Kuulei Rd. Suite 106
Kailua, HI 96734
808-262-3268 Tel
808-263-0338 Fax
kcronin at islandenergy.net 
www.islandenergy.net 

-----Original Message-----
From: William Miller [mailto:wrmiller at charter.net] 
Sent: Monday, December 04, 2006 10:54 PM
To: RE-wrenches at topica.com
Subject: Utility meter questioned [RE-wrenches]


Colleagues:

We recently installed a 30 KW system on a manufacturing facility.  The 
customer just received the first utility bill since the system was 
energized.  The bill shows no savings on the electric bill.

The electronic utility meter screen 99 is reported to show instantaneous 
consumption or generation into the grid.  I read the meter screen 99 at 
between .64 and 2.0 KW.  Each of the 6 inverters were putting out about 2.0 
KW each.  When operating, the inverters were putting 28 amps back into the 
grid on each phase.

I then shut down the inverters and the meter reading 99 did not 
change.  This is especially surprising in light of the fact that the plant 
was in operation with all three sublimation machines and the complete line.

I will meet with the utility to see if there is indeed a problem with the 
meter.  In the meantime, has anyone had any experience like this?

Thanks for your thoughts.

William Miller


__________________________________________________________________
William Miller
Miller Power and Communications
Voice :805-438-5600     Fax: 805-438-4607
email: wrmiller at mpandc.com
http://mpandc.com
License No. C-10-773985
_____________________________________________________________
Check out our latest project at 
http://mpandc.com/case_studies/pv_school/pv_school.html 


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