ABB to enhance power reliability in U.S. capital (WK-intern) - Gas-insulated switchgear to help strengthen electrical grid and boost power security for customers in Washington, D.C. ABB will supply gas-insulated switchgear (GIS) to strengthen the U.S. capital’s electrical network. The order is a part of the Capital Grid project and was awarded by Pepco Holdings, a member of the Exelon family of companies, a leading electric and gas utility company serving more than 2 million people in Washington, D.C. The U.S. capital is home to about 680,000 people. The city is experiencing its highest population growth in four decades, projected to reach about