David Ellsworth

Constellation Energy Resources LLC supplies power, natural gas, renewable energy and energy management products and services. It also provides integrated energy solutions from electricity and natural gas procurement and renewable energy supply to demand-side management solutions that help customers strategically buy, manage and use their energy. The company is headquartered in Baltimore, MD.

Potomac Electric Power Co. engages in purchase and regulated retail sale of electricity. It also engages in transmission and distribution of electricity to retail customers. The company was founded in 1896 and is headquartered in Washington, DC.

Part of PG & E Corp., PG & E National Energy Group, Inc. operates as a holding company. The company is based in Bethesda, MD. The company was founded by Frank de Rosa.

Exelon Power Team develops and implements long-term sales and supply strategy as well as the physical delivery of power and optimization of Exelon Generation's portfolio of assets. Its operations include generation dispatch, weather and load forecasting, transmission congestion management and fuel logistic operations. The company was founded in 1994 and is headquartered in Kennett Square, PA.