Cleantech Update

Plug Power , seem to be building one system at a time, they have participated in some US goverment military housing projects, and a few others. Corporate Headquarters 968 Albany Shaker Road (directions) Latham, New York 12110 Tel: 518.782.7700 Fax: 518.782.9060 Canada1 3120 Vanier Place Richmond, B.C. V6V 2J2 Tel: 604.303.0050 Fax: 604.231.0400 Washington, D.C. 499 South Capitol Street, SWSuite 606 Washington, D.C. 20003 Tel: 202.484.5300 Fax: 202.554.2896 government@plugpower.com Europe/Middle East/Africa Wilmersdorf 50 (directions) 7327 AC Apeldoorn The Netherlands Tel: 31 55 53 81 000 Fax: 31 55 53 81 099 apeldoorn@plugpower.com

The following types of fuel cells are commercial viable at this time Alkaline - AFC Phosphoric Acid - PAFC Molten Carbonate - MCFC Polymer Electrode Membrane - PEMFC Solid Oxide - SOFC Direct-Methanol - DMFC * Alkaline - AFC have one of the highest system efficiencies of all fuel cell types. Operating temperature is directly linked to material and manufacturing costs i.e. the lower the operating temperature, the lower the cost of the materials needed to create a working and reliable electrode and system. The fact that Alkaline technology can work perfectly well without the use of precious metals is an insurance against aggressive price hiking in the industry. Alkaline technology is the longest established technology having been invented in 1839. Alkaline technology is the most reliable of all fuel cell technologies having been selected for both the space and submarine applications over other available technologies. Having liquid electrolyte means that we can control the temperature of...