Company Profile

WGL Holdings, Inc. is a public utility holding company serving the Washington, D.C. metropolitan region.

Washington Gas, our leading subsidiary, has provided safe, reliable natural gas service to customers
in the D.C. area for nearly 160 years and, today, serves more than one million customers in the
District of Columbia, Maryland and Virginia. Our unregulated subsidiaries provide energy-related
services to residential and commercial customers, including government organizations.

Whether we are distributing clean natural gas safely to a customer’s home, providing electric power
through renewable wind energy, or installing energy-efficient systems for the federal government,
our vision is consistent and clear throughout our business: to be the retail energy company of choice
by achieving excellence for customers, investors and employees.