[RE-wrenches] Discrepency between inverter kWH reading andsolar production meter

[frenergy]

Hopefully there tech department can shed some light on this for you, however, it would certainly be to SolarEdge's benefit to appear to be producing more power than it really is, well, unless, Hmmmm ..........

Bill

  ----- Original Message ----- 
  From: Jarmo.Venalainen at schneider-electric.com 
  To: RE-wrenches 
  Sent: Friday, May 22, 2015 4:00 PM
  Subject: Re: [RE-wrenches] Discrepency between inverter kWH reading andsolar production meter


  Hi: 

  The difference is in the accuracy of revenue grade versus inverter KWh meters.  Revenue grade is typically much more accurate. 

  Beyond that, even if the accuracy of both was really good at lets say +/- 0.5%, you could still get a 1% overall difference in readings as one could be +0.5% and other -0.5%, even though they are both working to spec. 

  JARMO
  _____________________________________________________________________________________ 

  Jarmo Venalainen  |   Schneider Electric   |  Xantrex Brand  |   CANADA  |   Sales Application Engineer 
  Phone: +604-422-2528  |   Tech Support: 800-670-0707  |   Mobile: +604-505-0291 
  Email: jarmo.venalainen at schneider-electric.com  |   Site: www.Xantrex.com  |   Address: 3700 Gilmore Way, Burnaby, BC V5G4M1 
          
               



  *** Please consider the environment before printing this e-mail



        From:  Kevin Eigel <kevin at ecohousesolar.com>  
        To:  RE-wrenches <RE-wrenches at lists.re-wrenches.org>,  
        Date:  05/22/2015 02:38 PM  
        Subject:  [RE-wrenches] Discrepency between inverter kWH reading and solar        production meter  
        Sent by:  "RE-wrenches" <re-wrenches-bounces at lists.re-wrenches.org> 


------------------------------------------------------------------------------



  I recently installed a Solaredge 7600 inverter and two feet away from it installed a GE 210 solar kWh utility grade meter. Over the course of three months the kWh production measured by the inverter is more than 200 kWh greater then the production showing on the GE meter. I  changed out the GE meter for the last week and the discrepancy has continued, so it looks like it is not the meter. 
  I am looking for any help in understanding whey there is this large discrepancy on the kWh reading between the inverter and the production meter, when they are so close together. The Solaredge technical help desk has been of no use. 

  -- 
  Kevin Eigel 
  President 
  Ecohouse Solar 
  1857 Northwest Blvd. Ste 201, Columbus, OH 43212 
  www,ecohousesolar.com 
  614-805-5776 

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