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

    Module Sale Marks Day4 Energy Expansion into the Asian Market

    BURNABY, British Columbia, April 29 /CNW/ -- 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. For more information, visit: http://www.day4energy.com

    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 http://www.mitsui.com or http://www.sunwize.com

For further information: Rosalind Jackson of Antenna Group, 
+1-415-977-1923, rosalind@antennagroup.com, for Day4 Energy Inc. Web Site:
http://www.day4energy.com, http://www.mitsui.com,               
http://www.sunwize.com