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two years on a 6Kw PV system - 19,300 kWh produced - Page 5

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Posted by RF on April 2, 2009, 11:46 pm
 
Eeyore wrote:

around 4

I believe baled hay or straw are good
environmental products for insulation - certainly
no toxic fumes. The fact that they need to be
thick means extra expense because of the larger
roof and the land, if its price is at a premium.

Posted by Slick on March 16, 2009, 6:06 pm
 


Fantastic Post Doug ,

Love seeing real world results from home , have you by chance got any charts
/ graphs of your daily / weekly / monthly figures ?

Slick



Posted by stevey on March 17, 2009, 3:52 pm
 Dear 'Old' friend,

Congratulations!
Your system has done exceptionally well.  I remember your visit to our
PV benchmark
website --www.pvmonitor.net over a year ago.  A couple of questions:
   1.  Did you ever cleaned your array?  I remember there were wild
brush fires
        last summer, probably resulting in a layer of smoke
particles.  Sometimes
        a layer of dust may block up to 5% of sunlight.
   2.  What is the tilt angle and air-gap with the roof.?  It seems to
face East-South?

Considering that solar panels degrade about 0.5% per year. Your system
was
designed, and installed very well done.
I took the liberty to look up your site record and changed the
location from Sunnyvale
to a southern Cal location, and modified some other parameters.
The stated peak power rating may some times be in error by +/- 5%.
Assuming that there will be 95% sun this noon, your system should be
producing
3.6KW.  You might check on it then, or lookup a monitoring record if
it does have
a monitoring system.  Please feel free to visit our site, plus
www.wattminder.com,
under construction, but it gives you an 'insider' look at your PV
system; and you
could also specify a precise date & time for the benchmark. It is a
different
approach than the PVWatts, which takes yearly output and compared with
the
whole state in terms of insolation map. (Your site is performing at
19% above
norm, per the PVWatts method -- see  www.pvwatts.org)
Please execuse the clunky user interface.  I paid for a newly designed
front, but
can't afford a good web programmer  yet.

You are doing Edison and the community a nice favor by contributing
KWhs!!
Hope they pass a version of 'Feed-in Tariff' for California, and
retroactively.

Take Care, and May the Sun always warm your face and your panels!
Steve  -solarMD

old dirtbeard wrote:


Posted by Rick F on April 7, 2009, 4:20 pm
 
We just finished (about 2 months ago) our first 12-month net metering
cycle under
SCE and in the end for the entire year including connection fees, I
think out total
outlay for power was ~$5US (our final bill showed us using a bit more
than we
generated so we had to pay about $5-20 IIRC)..  We're using the Sharp
integrated
modules and also have a 6KW system with two Fronius inverters.. So far
so good!
I've not yet computed the payback period but I know before we had the
work done
we were spending about $25/mo in power bills alone and were
frequently in tier 3
ratings IIRC.

Posted by Eeyore on April 8, 2009, 3:52 am
 

Rick F wrote:


What's your location ?

Graham



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