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Posted by FAQmeister on February 13, 2005, 1:13 am
 

Thanks to all who responded. I know those panels existed at one time,
but they have disappeared and based on your answers it seems like there
are several good reasons for that.
--
Buford T. Justice



Posted by Windsun on February 14, 2005, 4:03 am
 
Actually they never existed as such. There used to be some little 100 watt
max AC direct inverter that some outfit had married (poorly, I might add) to
an existing 75 watt panel and sold it as a unit.

Since the price was up around $2 a watt for the combo, it did not stay
around long.

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Posted by Richard P. on February 13, 2005, 11:04 am
 I believe the units you are talking about were 24v PV's that had the Trace
MicroSine MS100
synchronous inverters built onto them.  The MicroSine's converted the 24vdc into
117vac and
synchronized it with the line voltage.  All you had to do was wire on an
extension cord end and plug
it into the wall.  It put out (ideally) 100watts.  MicroSines were distributed
in North America by
Trace/Xantrex for a few years in 1999/2001 or so but they no longer carry them
after 2002 I believe.
I think I saw one of these PV/Inverter combo's on ebay once in 2003.

An example of one is profiled at homepower.com in Adobe Acrobat .pdf format.
Goto:
http://www.homepower.com/files/GS_1.pdf    or goto homepower.com and click on the
"Magazine" tab,
then "Files and Downloads", then "Guerrilla Solar".  It's the first article
"Profile 1".


"FAQmeister" wrote


Posted by FAQmeister on February 13, 2005, 10:07 pm
 
Thanks. I think this was what I remembered seeing. At the time I think I
decided that the payback was going to take longer than 20 years and
based on the the info on solar I've seen lately that hasn't changed
much, if any.


--
Buford T. Justice



Posted by Richard P. on February 15, 2005, 5:50 am
 I thought about getting one these MicroSine inverters just to fool around with
(I lived in an
apartment and had a few pv's hanging off my balcony railing) but they retailed
at $50 Canadian and
without even considering the payback time period, it was just way too much.  I
found one at a local
store in 2001 that had a brand new unit still in the box on their shelf for the
past two years.
They wouldn't even discount it.  They sold a total of three units, and 1 of them
came back
defective.  Just last year I was attending a technical school and they have
several grid-tied
systems, one of them consists of twelve 100watt PV's connected to 12 MicroSines.
 In their first
three years of operation, two failed so they replaced them with their last two
units they had just
in case of failure.  I think there was an issue or two of Home Power Magazine
that mentioned some
units that prematurely failed...  I started to see a trend in the failure rate
and it was enough to
make me leery of purchasing one of them.

Personally, I don't look at payback periods anymore.  The independance and
fullfilling personal
environmental beliefs is enough for me.  These panels will be still producing
long after I am gone
and then my son will get them.  THEN the payback period for him will be
immediate as it won't have
cost him a thing!

"FAQmeister" wrote:


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