Capital Grid Project

The Capital Grid Project involves is a major transmission investment through Washington DC. It involves upgrading the Takoma, Harvard and Champlain substations, building a new Mount Vernon Triangle substation and installing 10 miles of underground transmission cable. According to THUB calculations, the project has an estimated cost of $20m.

Project Sponsor Line Miles Voltage (kV) From State To State Year in Service
Potomac Electric Power Co 10 230 MD MD 2022
Estimated Costs ($M) Voltage Type Project Status Project Group Origin Point Destination Point
20 Planned Takoma Mount Vernon Triangle Substation
Interstate Build Start NERC ISO/RTO Country Project Partners