J.D. Power Recognizes Washington Gas Energy Services for Highest Retail Electric Supplier Satisfaction in Maryland

Washington Gas Energy Services, Inc. (WGES), a subsidiary of WGL Holdings, Inc., ranked highest in residential customer satisfaction among Maryland competitive electricity suppliers, according to the J.D. Power 2014 Retail Electric Provider Residential Customer Satisfaction Study℠. The J.D. Power study measured satisfaction by examining five key areas: price; communications; corporate citizenship; enrollment/renewal; and customer service.

“Washington Gas Energy Services’ top ranking in customer satisfaction is a demonstration of our company’s unwavering commitment to serving our customers,” said Terry D. McCallister, Chairman and CEO of WGL. “We are proud to be ranked highest among retail electricity suppliers in Maryland, and pledge to our customers throughout the mid-Atlantic region that we will continue to hold ourselves to the same high standards in all the markets we serve.”

WGES provides residential and commercial customers with electricity, natural gas and green energy options in Delaware, the District of Columbia, Maryland, Pennsylvania and Virginia. Residential electricity customers automatically receive 5 percent regional wind power, and small commercial electricity customers automatically 3.5 percent regional wind power in their electricity supply. In addition, customers can further reduce their environmental footprint by electing to receive 50% or 100% WGES CleanSteps® WindPower. To learn more about electricity, natural gas and green energy options from WGES, visit www.wges.com or call 1-888‐884‐WGES (9437).

For more information about the J.D. Power 2014 Retail Electric Provider Satisfaction StudySM visit www.jdpower.com.

About Washington Gas Energy Services, Inc.:

Washington Gas Energy Services, Inc. is one of the largest competitive energy providers in the mid-Atlantic region. Washington Gas Energy Services supplies electricity, natural gas and green energy options to commercial and residential customers in Delaware, the District of Columbia, Maryland, Pennsylvania and Virginia. In 2011, the U.S. Department of Energy (DOE) named Washington Gas Energy Services the Green Power Supplier of the Year in the non-utility category. Headquartered in Herndon, Va., Washington Gas Energy Services is an affiliate of Washington Gas, the regulated natural gas utility, and a subsidiary of WGL Holdings, Inc. (NYSE:WGL). www.wges.com