Inverters/Monitors are compatible with SunPower solar panels.

Press Release Summary:

SPRx Series Inverters provide maximum ac power output from 3,300-4,000 W, while SPRx Series Inverter Monitors track efficiency and connect to inverters using CAT 5 Ethernet cable. Graphical backlit LCD screen can be used to monitor single or multi-inverter photovoltaic system from one indoor location.

Original Press Release:

SunPower Expands its Line of High-Efficiency Inverters

New Offerings Provide Choice in Design and Monitoring Capabilities

SAN JOSE, Calif., July 26 // -- SunPower Corporation (NASDAQ:SPWR), a Silicon Valley-based manufacturer of the world's highest- efficiency, commercially available solar cells and solar panels, today announced it has expanded its line of high-efficiency inverters, providing a choice in both design and monitoring capabilities. The new inverters and inverter monitors will be offered to the company's North American customers, as part of a complete, integrated solar system solution.

SunPower's SPRx inverters include: SPR-3300x, SPR-3300x -- 208 and SPR- 4000x, with a maximum AC power output from 3,300 watts to 4,000 watts. These highly reliable inverters are compatible with the electrical specifications of each of the company's high-efficiency solar panels, resulting in maximum system energy production. They also feature a low installed cost and clean design, and carry SunPower's 10-year warranty as a standard feature. The inverters are developed and manufactured for SunPower by Xantrex, a world leading supplier of high-quality solar inverters and monitoring systems for residential and commercial markets.

Complementing the company's new line of inverters is SunPower's SPRx Inverter Monitor for use inside the home to keep track of the superior efficiency delivered by SunPower's solar systems. The monitor easily connects to the SPRx series inverters using standard off-the-shelf CAT 5 Ethernet cable, and features a graphical, backlit LCD screen to monitor a single or multi-inverter PV system in one convenient indoor location.

"We are pleased to improve our customers' experience by offering an easy way to track SunPower's superior performance with our SPRx Inverter Monitor," said Peter Aschenbrenner, vice president of marketing and sales for SunPower Corp. "Customers are proud of their high-efficiency, beautifully designed SunPower systems, and this monitoring system offers them a way to show their friends what's happening up on the roof."

SunPower's SPRx High Efficiency Inverters and SPRx Inverter Monitors are now available. All product information can be found on the company's web site at

About SunPower

SunPower Corp. designs and manufactures high-efficiency silicon solar cells and solar panels based on an all-back contact cell design. SunPower's solar cells and panels generate up to 50 percent more power per unit area than conventional solar technologies and have a uniquely attractive, all-black appearance. For more information on SunPower or solar technology, please visit the SunPower website at . SunPower is a majority-owned subsidiary of Cypress Semiconductor Corp. (NYSE:CY).

About Xantrex

Xantrex Technology Inc. ( is a world leader in the development, manufacturing and marketing of advanced power electronic products and systems for the renewable, portable, mobile, and programmable power markets. The company's products convert and control raw electrical power from any central, distributed, renewable, or backup power source into high-quality power required by electronic and electrical equipment. Headquartered in Vancouver, British Columbia, the company has facilities in Arlington, Washington; Livermore, California; Elkhart, Indiana; Barcelona, Spain; and Reading, England. Xantrex is publicly listed on the Toronto Stock Exchange under the ticker symbol "XTX".

Source: SunPower Corporation

Julie Blunden,
Vice President External Affairs,

Helen Kendrick,
Communications Manager,

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