ABB Type AB1 Meters for Net Metering [RE-wrenches]

[Joel Davidson]

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John,
Southern California Edison uses the old General Electric watthour meter
I-70-S-2 for residential applications. I-70s have always been unratched in
SCE territory so SCE does no meter change when a customer installs a PV
system. I use to buy reconditioned I-70s for $25 before inverters came with
CEC approved meters. The California net metering law has some strict
language about utilities using metering to make going solar more difficult.
Here in California, PV advocates approached the utility companies and said
"We know you want to encourage your customers to use clean solar
electricity. How can we keep down the interconnect costs for the utility
company and the customer?" This approach helped us find our friends and
flush out enemies.
Best regards,
Joel Davidson

Original Message:
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From: John Raynes john at raynes.com
Date: Wed, 07 Apr 2004 21:08:31 -0500
To: RE-wrenches at topica.com
Subject: ABB Type AB1 Meters for Net Metering [RE-wrenches]


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Thanks to all who responded to my general questions a few weeks back on net 
metering policies.   I'm now looking for some more specific input on the 
meters themselves, similar to what Bob Maynard was doing for disco switches:

Do any of you know of utilities using electromechanical, Type AB1, Form 2S, 
kWh meters in grid tied installations?  Note: ABB sold their meter division 
(at least the electromechanical portion) to Elster Electricity LLC a few 
years ago, but I believe they're still the same meters.  These are the 
meters used pretty extensively by our rural co-op.

I tried to get some applications help from Elster but to no avail.  I'm 
looking for evidence that these meters are being used successfully by some 
other utilities, running bi-directionally and adequately measuring net 
totals.  Our co-op wants to charge $600-$700 for a Landis+Gyr four-quadrant 
electronic meter, and I'm going to try to talk them out of it, if I can 
show some evidence that the Type AB1's are working fine elsewhere.

Any input you know of regarding these meters and their uses will be very 
helpful,

John Raynes
RE Solar
Torrey UT
www.re-solar.com

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