Baltimore, MD

Constellation Energy Projects & Services Group, Inc.

Constellation Energy Group, Inc.

Constellation Energy Commodities Group, Inc.

Cne Gas Supply, LLC

Cne Gas Holdings, Inc.

Energy Performance Services, Inc.

Constellation Newenergy, Inc.

Gridforce Energy Management, LLC

Herndon, VA

Xo Holdings, Inc.

Reston, VA

Xo Technology Services, Inc.

Cockeysville, MD

Hunt Valley, MD

Connectyourcare, LLC.