SunMizer(TM) DC Power Optimizer Demonstrates Payback in Less Than 5 Years

October 26, 2009

'Selective Installation' on Residential PV System Recovers Over 50% of Power Loss Due to Shade.

PETALUMA, Calif., Oct. 26 /PRNewswire/ -- Xandex Solar, a division of Xandex Inc., announced today the release of a case study on the retrofit of a residential solar installation with its new SunMizer(TM) DC Power Optimizers. The 6.4kW installation, located in Sonoma, CA, presented the system designer with a complex multi-tiered roof and significant space constraints, a situation typical in many residential solar installations. The case study shows that SunMizer, when selectively installed on only 8 shaded panels, recovered more than 50% of system level power loss.

The residential system consisted of thirty-two (32) 200W panels connected in two sixteen (16) panel strings on a single inverter. Prior to SunMizer installation, system performance output was modeled, both with and without shade, to determine the annual energy recapture potential. The results revealed that more than 2,000 kWh of annual energy production was being lost due to shade.

SunMizer was then "selectively installed" on 5 panels in one string and 3 panels in the other string. These 8 panels experience shade during daily "peak sun-hours", or from 9AM to 5PM. After SunMizer installation, the result was a significant increase in output that amounts to over 1,000 kWh of power recovered annually. This equates to a SunMizer payback period of less than 5 years when valued at typical Northern California residential electricity rates.

"Like many residential installations, shade was having a significant impact on power output," said Tim Kubes, Director of Sales and Marking for Xandex Solar. "The power recovery is remarkable and proof adding SunMizer only to shaded panels offers significant value for our customers." The case study is available by registering at www.xandexsolar.com and also at Xandex Solar Booth #2252 at Solar Power International 2009 in Anaheim, CA, October 27-29 as SunMizer is introduced to the North American Solar market.

About Xandex Solar

Xandex Solar is the solar products and services division of Xandex Inc. Organized in 2007, our mission is to be a premier provider of solar energy solutions worldwide. Our parent company, Xandex Inc. was founded as a technology startup in 1981 to design and manufacture innovative solutions for the semiconductor industry. Continuing in that tradition of technological innovation, Xandex Solar is undertaking research and development projects to improve PV conversion efficiency, reduce the cost of solar electricity and increase adoption of solar electric systems. For more information visit Xandex Solar on the web at www.xandexsolar.com or contact:

Media: Kim Anderson email: kanderson@xandex.com (707) 763-7799 x144 Toll Free (800) 767-9543

Sales: Ted Wong email: twong@xandex.com (707) 763-7799 x179 Toll Free (800) 767-9543

SOURCE Xandex Solar, a Division of Xandex Inc.