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West Penn Power Sustainable Energy Fund Invests in Plextronics

PITTSBURGH, PA – March 28, 2006 – The West Penn Power Sustainable Energy Fund (WPPSEF) announced today that it has invested $500,000 in Plextronics, the world leader in developing active layer technology that enables broad market commercialization of printed electronic devices, to accelerate the development of Plexcore™ HIL for solid state white lighting (SSL).