Electricity and natural gas provider Pepco Holdings ( POM) said its subsidiary Pepco Energy Services received two contracts from the U.S. general services administration to supply 400 megawatts of electricity to more than 100 federal government buildings in Washington and Chicago. Terms of the contract were not disclosed. The Washington contract begins in October this year and runs 38 months. Under the contract, Pepco will provide power to various national landmarks. Three percent of the electricity purchased will be generated from renewable resources. Under the second contract, Pepco will supply electricity to several government agencies in Chicago beginning in January 2007. Five percent of the electricity purchased will be generated from renewable resources over the five year contract period. "Pepco Energy Services is pleased to be able to supply competitively priced electricity to the federal government that includes green electricity as well," the company said.