ReliOn Presented with AT&T 2013 Supplier Diversity Crystal Award

ReliOn

ReliOn, a Plug Power company, continuously innovates with its core technology, making it a leader in the development of modular, scalable fuel cell products for customers seeking solutions in critical backup power applications. Customers like AT&T, Sprint and Verizon enjoy the benefits of high reliability, low operating costs and easy maintenance. Learn more about ReliOn at www.relion-inc.com.

ReliOn fuel cells…simply powerful.

Safe Harbor Statement

This communication contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Actof 1995 that involve significant risks and uncertainties about the company, including but not limited to statements about forecast of financial performance, products and services, business model, strategy and growth opportunities, and competitive position. You are cautioned that such statements should not be read as a guarantee of future performance or results, and will not necessarily be accurate indications of the times at, or by which, such performance or results will have been achieved. Such statements are subject to risks and uncertainties that could cause actual performance or results to differ materially from those expressed in these statements. In particular, the risks and uncertainties include, among other things, the risk that we continue to incur losses and might never achieve or maintain profitability; the risk that we will need to raise additional capital to fund our operations and such capital may not be available to us; our lack of extensive experience in manufacturing and marketing products may impact our ability to manufacture and market products on a profitable and large-scale commercial basis; the risk that unit orders will not ship, be installed and/or converted to revenue, in whole or in part; the risk that pending orders may not convert to purchase orders, in whole or in part; the risk that a loss of one or more of our major customers could result in a material adverse effect on our financial condition; the risk that a sale of a significant number of shares of stock could depress the market price of our common stock; the risk that negative publicity related to our business or stock could result in a negative impact on our stock value and profitability; the risk of potential losses related to any product liability claims and contract disputes; the risk of loss related to an inability to maintain an effective system of internal controls or key personnel; risks related to use of flammable fuels in our products; the cost and timing of developing, marketing and selling our products and our ability to raise the necessary capital to fund such costs; the ability to achieve the forecasted gross margin on the sale of our products; the risk that our actual net cash used for operating expenses may exceed the projected net cash for operating expenses; the cost and availability of fuel and fueling infrastructures for our products; market acceptance of our products, including GenDrive systems; the volatility of our stock price; our ability to establish and maintain relationships with third parties with respect to product development, manufacturing, distribution and servicing and the supply of key product components; the cost and availability of components and parts for our products; our ability to develop commercially viable products; our ability to reduce product and manufacturing costs; our ability to successfully expand our product lines; our ability to successfully expand internationally; our ability to improve system reliability for our GenDrive systems; competitive factors, such as price competition and competition from other traditional and alternative energy companies; our ability to protect our intellectual property; the cost of complying with current and future federal, state and international governmental regulations; risks associated with potential future acquisitions; and other risks and uncertainties referenced in our public filings with the Securities and Exchange Commission. For additional disclosure regarding these and other risks, see disclosures contained in Plug Power’s (PLUG) public filings with the Securities and Exchange Commission (the “SEC”) including, the “Risk Factors” section of PLUG’s Annual Report on Form 10-K for the year ended December 31, 2013. You should consider these factors in evaluating the forward-looking statements included in this presentation and not place undue reliance on such statements. The forward-looking statements are made as of the date hereof, and the company undertakes no obligation to update such statements as a result of new information.