What is the Capital Grid Project?

Capital Grid Project

The Capital Grid Project, for which Pepco is seeking the DCPSC's approval, is a long-term plan that proposes to address multiple system needs: updating the aging infrastructure, enhancing resilience against transmission disruptions, increasing the reliability of downtown power supply, adding capacity in rapidly growing areas, and accommodating more customer-generated power. 

The proposed project involves:

(1) rebuilding two existing substations that are 60 to 110 years old (Champlain and Harvard Substations, respectively);

(2) replacement of aging underground cabling;

(3) constructing 10 miles of new 230 kV underground transmission lines; and
(4) constructing a new Mount Vernon substation, located at First and K Streets NW.

Pepco filed a revised Notice of Construction (NOC) for the Capital Grid Project (Formal Case No. 1144), which is under consideration. The DCPSC must approve Pepco’s NOC before the company can start construction on the project. 
Click here to learn more about the proposed Capital Grid Project. 

Click here to view the procedural order outlining how the Commission will complete our regulatory review of Pepco’s Notice of Construction (NOC) for the Capital Grid Project.

Champlain Substation

Champlain Substation
Current Picture Rendering

Harvard Substation

Current Picture Rendering

Mount Vernon Substation

Current Picture Rendering