Day4 Energy Selected for Japanese Study of Large-Scale Solar Power Projects

Module Sale Marks Day4 Energy Expansion into the Asian Market

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Burnaby BC - April 29, 2008 - Day4 Energy Inc. (TSX: DFE), a leading manufacturer of high performance, cost-effective solar electric modules, today announced that it has supplied Day4 48MC solar modules to Tokyo-based Mitsui & Co, Ltd. for an installation sponsored by the Japanese Government’s New Energy and Industrial Technology Development Organization (NEDO). Operated by NTT Facilities, Inc, the NEDO project has included the Day4 48MC among twenty-six of the solar industry’s leading modules in its evaluation of the positive and stabilizing impact that large-scale photovoltaic (PV) systems can have on the regional utility grid. The sale marks Day4 Energy’s first supply contract in the rapidly expanding Asian solar market.

“Day4 Energy’s modules are designed to bring high performance, longer lifespan, and faster ROI to solar power generation. It is an honor to be included among the leading solar technology options on the market today for this Japanese evaluation of large-scale PV development. In the process we have gained key relationships, valued partners and a strategic foundation for continued growth in the global solar market,” said Day4 Energy President and COO George Rubin.

The NEDO project will be executed in phases with the entire approximately 2-megawatt (MW) system expected to be operational in mid-2009. The project will continuously evaluate and optimize a cross-section of leading PV technology options including such as monocrystalline silicon, multicrystalline silicon, thin films and concentrating systems.

Commissioned on March 23, 2008, the initial phase includes 30-kilowatts (kW) of Day4 Energy 48MC solar panels. The highly efficient Day4 48 MC solar module is based on the company’s proprietary Day4 Electrode technology, an innovative approach to module construction that directly replaces the decades-old soldering connection methods to improve module efficiency, decrease costs and enable continued innovation in solar technology development.

About Day4 Energy

Headquartered near Vancouver, British Columbia, Day4 Energy Inc. designs, manufactures and sells photovoltaic (PV) modules based on its patented Day4 Electrode technology, a proprietary method of contacting and interconnecting solar cells. The Day4 Electrode produces PV panels of high power density, increased lifetime and uncompromised aesthetic appearance. The advanced solar module construction method increases the performance of conventional silicon panels and enables the next-generation of PV innovation. Day4 partners with the industry’s leading PV cell producers to deliver IEC and UL certified commercial and residential solar products to customers throughout Europe and North America.

About Mitsui & Co., Ltd.

Mitsui & Co., Ltd., is ranked 146th in the 2008 annual Forbes Global 2000 listing of “The World’s Biggest Companies”. Founded in 1876, Mitsui & Co is a trading and holding company, with interests in every major industry and a geographic reach that spans every major market in the world. Mitsui is deeply involved throughout the global solar industry value chain. In the North America, Mitsui’s flagship solar company is SunWize Technologies. For more information, please visit www.mitsui.com or www.sunwize.com

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Press Contact:
Rosalind Jackson
Antenna Group (for Day4 Energy)
415-977-1923
rosalind@antennagroup.com