System Performance Metering [RE-wrenches]

[Joel Davidson]

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John,
I have not seen residential PV system metering in Japan, but Japanese
commercial PV systems have one-way kWh meters on the output of the PV
system similar to California commercial PV systems. All grid-tied PV
systems in Germany have a one-way revenue meter on the output of the PV
system that are read monthly by the local utility company and the owners
receive a check for the energy they sell to the grid. Past July in Germany,
I saw only revenue meters and was told that there are no net metered
systems.
Joel Davidson

Original Message:
-----------------
From: John Raynes john at raynes.com
Date: Fri, 17 Dec 2004 10:41:47 -0600
To: RE-wrenches at topica.com
Subject: RE: System Performance Metering [RE-wrenches]


 

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Joel,

Are they collecting PV output data by itself in Japan and Germany, or just 
the net metered difference, or both?  If they're collecting PV output data 
by itself, can you point me to any links or references that talk about how 
they're going about it?

My interest stems from the fact that there are some active efforts here in 
UT to get a buy-down program going.  I've been consulted during the review 
of the draft proposals, and I'm going to bat for performance metering.  I'd 
like to see someone move the performance metering ball forward in the US, 
and so I'm trying to get a good assessment of what's going on at 
present.  Maybe I'll get "squashed by the masses" like Bill, but there's a 
lot less of us here in UT so hopefully the trampling won't be so painful
;-).

John Raynes
RE Solar
Torrey UT


At 11:12 AM 12/17/04 -0500, Joel Davidson wrote:

>...and in the meantime, tens of thousands of PV systems in Japan and
>Germany monitor performance which gives customers and politicians
>confidence that their incentives are resulting in better quality PV sytems.
>A PV system without metering is like a car without dashboard instruments.
>You can operate it but at your own risk.

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