Day4 Energy Receives IEC Certification for 60MC-I Module with Guardian
Technology

60MC-I module with intelligent shade protection expected to be commercially available by the start of 2H2010

BURNABY, BC, May 4 /CNW/ - Day4 Energy Inc. (TSX: DFE), a leading supplier of high performance, cost-effective solar electric solutions, today announced it has received International Electrotechnical Commission (IEC) 61215 and 61730-2 certification for the 60MC-I module with Guardian Technology.

"There has been strong demand and interest in this unique technology since we first introduced the product in late 2009," says George Rubin, president of Day4 Energy. "We are on track with our full-scale commercial production and with IEC certification now confirmed we expect to complete the first large volume shipments of our already-established frame contracts for the 60MC-I by the start of the second half of this year."

IEC 61215 and 61730-2 are recognized industry standards that verify that the modules have passed the required series of tests and are suitable for long-term operation in a wide range of outdoor climates. These tests examine the important technical requirements for photovoltaic modules, namely reliability, durability, efficiency, electrical safety and performance degradation over time. IEC certification for photovoltaic modules is a requirement for sales into the European market.

The company first announced the introduction of the 60MC-I module with Guardian Technology on September 14, 2009. Guardian Technology dramatically improves the performance of the photovoltaic (PV) modules when exposed to partial shading, snow, debris and other external factors that under normal circumstances cause a substantial reduction in power yield. As a direct result, Day4 60MC-I modules with Guardian Technology are three times less sensitive to these external factors. They also offer as much as 25 percent greater power yield from the same installation area due to higher installation density and provide a higher energy yield (kilowatt-hours per year per dollar invested) when compared to standard module designs. Additionally, Guardian Technology enables viable PV installations on many sites that have been previously considered not suitable for this purpose. More information about Guardian Technology is available at http://www.day4energy.com/EN/guardian.htm.

About Day4 Energy:

Day4 Energy Inc. is a Canadian company dedicated to providing high performance photovoltaic (PV) solutions for residential, commercial and utility scale installations. By fundamentally improving on the design and assembly of solar cells and modules, the Company produces unique PV panels of high power density, increased lifetime and uncompromised aesthetic appearance. Day4 Energy partners with international technology leaders to develop and deliver IEC- and UL-certified solar products to customers around the world. Day4 Energy is listed on the Toronto Stock Exchange under the symbol "DFE". For more information, please visit www.day4energy.com.

Forward Looking Statements:

This news release contains forward-looking information. These statements relate to future events or future performance and reflect management's current expectations and assumptions. A number of factors could cause actual events, performance or results to differ materially from the events, performance and results discussed in the forward-looking statements. These forward-looking statements are made as of the date hereof and the Company does not assume any obligation to update or revise them to reflect new events or circumstances.

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SOURCE Day4 Energy Inc.

For further information: For further information: Therese Hayes, Head, Corporate Development, Day4 Energy Inc., (604) 296-0434, thayes@day4energy.com; Heather Ballachey, Media Contact, Day4 Energy Inc., (604) 296-0445, media@day4energy.com

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