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<font size=3>Michael:<br><br>
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.<br><br>
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:
<a href="http://www.consumerenergycenter.org/erprebate/equipment.html" eudora="autourl">http://www.consumerenergycenter.org/erprebate/equipment.html</a>
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.<br><br>
Please, wrenches, keep this under your hats.<br><br>
William Miller<br><br>
<br><br>
<br><br>
At 09:47 AM 3/26/2009, you wrote:<br>
<blockquote type=cite class=cite cite>Hi William. The SW's own roadblock
got removed many years ago. I got PG&E to approve SW serial number
00011 (as I recall) for an installation in Arcata in a non-net-billing
intertie. This was brand new to them, and as far as I know the only other
SWs running in CA were off-grid betas, and one guerrilla.<br><br>
At the time, they wanted the certificate of compliance to prove it would
not island, and it required a fair amount of back and forth with Trace
engineers. (Now those guys are with other companies we know and love.) I
think that eventually, they actually did their own testing on that model
in San Ramon.<br><br>
But I thought the CEC listing service was supposed to supercede all that.
At least that is what it took for my OutBack inverter to be approved for
intertie a few years back. Is the XW not listed with the CEC?<br><br>
BTW, I sold a SW2512 on eBay in '05 for $1,136. There are two SW4024s on
eBay right now, no bids yet.<br><br>
William Miller wrote at 11:12 PM 3/25/2009:<br>
<br>
>2. We have an application to the local utility (PG&E) pending for
a three XW installation with a motor-generator. We have received
multiple communications from PG&E doubting the acceptability of the
XW system for use as a gird-tied battery-back up system. We are
hoping that PG&E accepts the listings from the various agencies and
approves the project.<br>
><br>
>Interesting that the old, non-complaint system receives swift
approval but the latest and greatest gear hits a regulatory road
block! We'll keep you posted.<br>
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