Washington Gas Energy Services, Inc. (WGES), a leading competitive supplier of electricity and natural gas to business and residential customers in the mid-Atlantic region, announced today that more than 10,000 WGES residential customers from Maryland, the District of Columbia, and Delaware have made the switch to clean wind power. These customers are helping to reduce CO 2 emissions by purchasing 50% or 100% CleanSteps (SM) WindPower from local wind farms to meet their electricity needs.

“As a Clean Energy Week partner ( www.cleanenergyweek.com), we thank our customers for their commitment to improve the environment all year long,” said Harry Warren, President of WGES. “During 2009 our CleanSteps (SM) WindPower customers helped eliminate 102,000 metric tons of CO 2 emissions, equivalent to taking 19,500 fossil fueled cars off the road.”

In addition to the 10,000 customers who purchase 50% or 100% CleanSteps (SM) WindPower, all other WGES residential electric customers receive 5% wind power as part of their electricity supply, above and beyond any jurisdictional requirements for renewable energy content. WGES began offering power from regional wind farms in 2002.

For more information on the WGES CleanSteps (SM) WindPower program, visit www.wges.com or call 888-884-9437.

About WGES

Washington Gas Energy Services, Inc. is one of the largest competitive providers of electricity and natural gas in the mid-Atlantic region, and supplies over 260,000 customers in Maryland, Virginia, Delaware, the District of Columbia and Pennsylvania. Headquartered in Herndon, VA, Washington Gas Energy Services is an affiliate of Washington Gas and a subsidiary of WGL Holdings, Inc. (NYSE:WGL).

About Clean Energy Week

Clean Energy Week is focused on the national imperative to enact comprehensive clean energy policy - including climate solutions, renewable energy and energy efficiency programs - as a means of creating vast numbers of new jobs, ensuring U.S. global leadership in the emerging clean energy era, enhancing security and preserving the planet for the generations to follow. For more information about Clean Energy Week please visit: www.cleanenergyweek.org

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