As a quick clarification- SolarEdge requires PV WIRE per 690.35. Regular
USE-2 doesn't work for these systems.
On 2013/6/15 7:25, SwingJunkie wrote:
Marco,
We installed our first Enphase system in December 2009, and our last
in December 2011, when their high failure rate became a problem.
(Currently 10%+ for us). We were only installing the Enphase units on
sites with shading issues, as a means to mitigate conditions.
After moving away from Enphase, we selected SolarEdge as the
solution of choice for those sites. The installation labor is
comparable to the Enphase solution, separate device under each module.
One clear advantage is that there are no custom trunk cables required,
just the standard USE-2 cable and connectors.
Our field experience has been better than expected production, and
1.4% failure rate. In December we installed a SolarEdge system just
down the street from a site where we had previously installed an SMA
string inverter on an unshaded site. The SolarEdge system has some
shading. Both arrays have roughly the same orientation and pitch. To
date the SolarEdge system with shading continues to out produce the
unshaded SMA system by 5-8% kWh/kWp.
I agree with your intuition on fewer components making a better
solution and "IF" there is a reliable solution that accomplishes this
that would be preferred.
I just priced out the Mage AC module (SolarBridge technology) side
by side with the Mage - SolarEdge combination and the later is less
expensive equipment wise but I think that advantage would be erased by
labor savings on the install.
All that said I'm still a fan of the old fashioned string inverter
solution unless the site shading conditions and or array geometry
require an alternate solution.
Cheers
Carl Adams
SunRock Solar
On Jun 14, 2013, at 9:15 PM, "Marco Mangelsdorf" <ma...@pvthawaii.com
<mailto:ma...@pvthawaii.com>> wrote:
I've been educating myself on the Solar Edge product v. using micro
inverters. If you click on the link below, you can read the pitch
that they make for using their product over micros.
Any opinions out there on how convincing their strategy is? As well
as any experience in the field with the product?
Intuitively, it seems to me that if you can accomplish what you need
to accomplish (DC power from the PV mod to usable AC power) with fewer
parts (as in a micro inverter instead of a DC-DC converter and a
separate inverter), then that approach makes more sense.
http://www.solaredge.us/groups/us/technology/microinverters
thanks,
marco
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