[RE-wrenches] Battery based grid tie question.

[Michael Welch]

William Miller wrote at 06:32 PM 3/26/2009:
 
>Michael:
>
>The SW inverters were first approved for grid-tie as originally designed.  Then the CEC pulled the listing because re-testing revealed some borderline results.  It was rumored that the only competing grid-tie company at the time blew the whistle.  It was a big deal at the time with many SW projects in the pipeline.
>
>Xantrex scrambled to remedy the situation and created the GTI.  Many SW inverters were removed from walls and sent to Arlington to be refitted for GTI interfaces.  An internal board was changed and the outboard interface provided.  The CSI home page has a photo of an SW inverter with a GTI:  http://www.consumerenergycenter.org/erprebate/equipment.html The list of eligible equipment says right on it, "with GTI."  So one theoretically should not be able to obtain a utility agreement without a GTI, but we received one about two weeks ago.  go figure.

And clearly, two XWs are listed there which makes PG&E's waffling on them hard to understand. Maybe it's the generator that's got them spooked.

>Please, wrenches, keep this under your hats.

You may have been joking or semi-joking, but I do feel the need to remind folks that the posts on this list are available to the public.