Performance matters [RE-wrenches]
Bill Brooks
billb at endecon.com
Tue Mar 30 12:33:16 PST 2004
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Marco,
Where is the other data that Anthony requested? Interested in Califonia....
Please email to: survey at appliedsolarenergy.com (replace "at" with @),
with "Production Survey" in the subject line.
Please leave commas out of numbers. "2214" instead of "2,214".
<Survey - nothing to enter on this line>
<Latitude>
<Altitude>
<Zip Code> <System Size - watts>
<CEC Size - watts> <Module Qty>
<Module>
<Inverter Qty>
<Inverter>
<Batterys Yes or No only>
<String Size (modules per string)>
<Module Azimuth>
<Module Tilt>
<Annual shading correction>
<Predicted Annual Production - kwh>
<Actual Annual Production - kwh>
<Start of Year mm/yy>
<End of Year mm/yy>
<Estimation method>
</Survey - marks the end>
Instructions: Fill in the values in the form above. If not known, leave
blank. Except for the last line (estimation method) answers should
contain numbers in only one place. For example, "<String Size>9" is
ok. "<String Size>8 or 9" is not.
If you have information about more than one system, duplicate the block
above and submit in one email if you want.
Explanations of individual entries:
System Size (name plate - # of modules X manufacturers rating)
CEC Size (for california wrenches: # of mods X CEC PTC rating X inverter
CEC efficiency)
Module Qty
Module Manuf & Model (use California eligible module table for
consistency and since its available to everyone via the web at
http://www.consumerenergycenter.org/erprebate/eligible_pvmodules.html)
Inverter Manuf & Model
Batterys (Yes or No only)
String Size (# of modules in series)
Module Azimuth - in degrees, South = 180, West = 270, East = 90
Module Tilt - in degrees, horiz = 0, North facing (above the equator)
would be negative values.
Predicted Annual Production (kwh)
Actual Annual Production (kwh)
Estimation method (this could be a description or a name if you use a
product such as Maui software or Clean Power Estimator)
-----Original Message-----
From: Marco Mangelsdorf [mailto:marco at pvthawaii.com]
Sent: Tuesday, March 30, 2004 11:20 AM
To: RE-wrenches at topica.com
Subject: Performance matters [RE-wrenches]
>From Antony: "Is he the only one who has collected data, or is there no
interest in real world performance?"
I have several systems' worth of performance data.
* Waikoloa, sunny side of the Big Island of Hawai'i
3 kW STC array with SB2500
12.93 kWhs/day average after two years of operation
* Kailua-Kona, sunny side of Big Island
3 kW STC array with SB2500
11.7 kWhs/day average after one year
* Kawaihae, very sunny side of the Big Island
7.2 kW STC array with two Xantrex SW4048s (w/battery back-up)
25.77 DC kWhs/day average after two years
22.54 AC kWhs/day average = 87.5 percent DC-AC efficiency
* Kahului, Maui
32.4 kW STC array with Xantrex PV45208
132.3 kWhs/day average after .79 years
marco
ProVision
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