NYSE Euronext (NYX) announced today its continued commitment to sustainability by purchasing renewable energy certificates (RECs) from Green Mountain Energy Company for its 2011 electricity use. The RECs purchased by NYSE Euronext were generated from 100 percent wind energy sources, which avoid the harmful emissions that are typically released in traditional power generation.

“We are making commitments across the board to operate sustainably, and our decision to choose 100% wind renewable energy certificates for our electricity usage is one more proof point of those efforts” said NYSE Euronext Chief Executive Officer Duncan L. Niederauer. “By working with Green Mountain we were not only able to deliver on our commitment but also partner with a company that was built on a mission to provide what we were after – a cleaner source of power.”

NYSE Euronext purchased over 80 million kilowatt-hours (kWh) of wind energy to cover the full range of its 2011 electricity usage – from the flurry of trading floor activities to operational needs. Making this commitment to renewable energy avoided over 82 million pounds of carbon dioxide (CO₂), the same amount generated by more than 33 million New York City taxi rides or the CO₂ absorbed annually by enough trees to fill nine times the acreage of Central Park.

“Our partnership with NYSE Euronext to choose clean energy sources makes a great fit for the environmental practices in place at both our companies.” said Scott Hart, president of Commercial Services for Green Mountain. “NYSE Euronext may do a lot of trading, but doesn’t make trade-offs when it comes to bettering the environment.”

NYSE Euronext made this commitment to clean energy through the purchase of Green-e certified RECs from Green Mountain. RECs are the industry standard for accounting for renewable electricity generation. Each REC represents the environmental attributes of 100 kWh of renewable energy. Purchasing RECs in the same quantity as NYSE Euronext’s electricity consumption ensures that the amount of energy used is added to the U.S. power grid from renewable sources and supports the continuation of these projects. The RECs were purchased retroactively as a way to ensure accuracy in matching the electricity consumed by the organization during the 2011 calendar year.

About NYSE Euronext
NYSE Euronext (NYX) is a leading global operator of financial markets and provider of innovative trading technologies. The company's exchanges in Europe and the United States trade equities, futures, options, fixed-income and exchange-traded products. With approximately 8,000 listed issues (excluding European Structured Products), NYSE Euronext's equities markets – the New York Stock Exchange, NYSE Euronext, NYSE Amex, NYSE Alternext and NYSE Arca – represent one-third of the world's equities trading, the most liquidity of any global exchange group. NYSE Euronext also operates NYSE Liffe, one of the leading European derivatives businesses and the world's second-largest derivatives business by value of trading. The company offers comprehensive commercial technology, connectivity and market data products and services through NYSE Technologies. NYSE Euronext is in the S&P 500 index, and is the only exchange operator in the Fortune 500. For more information, please visit: http://www.nyx.com.

Green Mountain Energy Company
Green Mountain is the nation’s leading competitive retail provider of cleaner energy and carbon offset solutions and believes in using wind, sun and water for good. Founded in 1997, the company celebrates 15 years delivering on the mission to “change the way power is made” and is the longest serving green power marketer in the nation. Green Mountain offers consumers and businesses the choice of cleaner electricity products from renewable sources, as well as a variety of carbon offset products and sustainable solutions for businesses. One of Green Mountain’s largest customers is the “world’s most famous office building,” the Empire State Building in New York City. Green Mountain customers have collectively helped avoid over 19.4 billion pounds of CO₂ emissions. As a wholly owned subsidiary of NRG Energy (NYSE:NRG), Green Mountain is backed by one of the nation’s largest renewable power producers. Visit us online at www.GreenMountain.com  and learn more about our campaign for good at www.greenmountain.com/forgood.

Green Mountain Energy

Green Mountain Energy

Green Mountain Energy Company was founded in 1997 with the mission to change the way power is made. Today, we remain 100% committed to this mission, which makes us the nation’s longest serving renewable energy retailer and a clean energy pioneer. We provide customers with electricity products made from renewable resources like wind and solar and carbon offsets that help neutralize carbon emissions.

We live our commitment to sustainability inside and out: Every single product offered by our company has an environmental benefit, and our company operates with a zero-carbon footprint - distinctions that make us proud!

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