Hello Jay,
Sounds like something is wrong other than Unisolar vs. crystalline. All things
being equal, the Unisolar should produce more kWh per kW than crystalline.
Questions:
1. What modules and how many of each?
2. What inverter or inverters?
3. Geographic location?
4. Array azimuth and tilt?
Best regards,
Joel Davidson
----- Original Message ----
From: jay peltz <[EMAIL PROTECTED]>
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Sent: Friday, October 31, 2008 8:27:19 AM
Subject: Re: [RE-wrenches] crystalline VS uni-solar
Hi Geoff,
In regards to the performance between Unisolar and crystalline, there is a side
by side ( same watts, batteryless intertie with metering) installation up here
on the North coast of California, and the the Unisolar is the constant
under-performer. This includes cloudy, sunny, warm, cold weather.
I have seen nothing in the field to support the Unisolar claims about better
performance in low light etc. That said, they do work better in very hot
conditions, if thats what you have.
jay
peltz power
On Oct 31, 2008, at 8:08 AM, Geoff Greenfield wrote:
As a follow up to my uni-solar post (and thanks to all who provided feedback),
I have a second request:
Any references to recent side-by side "shoot-outs" between Unisolar and
conventional crystaline PV? Scientific studies? Your own wrench thoughts?
I am more and more often encountering confused customers that are considering
unisolar systems at zero-tilt (we are at 40 degrees N), with plenty of partial
shading, after getting a pitch about all sorts of advantages of Uni-Solar. I
think that this product has it's role and I occasionally sell it... But I am
frustrated when I truly believe I can deliver a better net energy production
with a tilted crystalline solution (avoiding the shaded areas).
For a brighter energy future,
Geoff Greenfield
Founder and CEO
Third Sun Solar & Wind Power Ltd.
340 West State Street, Unit 25
Athens, OH 45701
740.597.3111 Fax 740.597.1548
www.Third-Sun.com
Clean Energy - Expertly Installed
_______________________________________________
List sponsored by Home Power magazine
List Address:[EMAIL PROTECTED]
Options & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out participant bios:
www.members.re-wrenches.org
_______________________________________________
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Options & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
www.re-wrenches.org/etiquette.htm
Check out participant bios:
www.members.re-wrenches.org
