Pepco Holdings proposes route for transmission project

Washington, D.C., May 5, 2010 — Pepco Holdings proposed the Choptank Route through Dorchester County, Md., for the Mid-Atlantic Power Pathway transmission project.

MAPP, a proposed high-voltage transmission line that will help bring reliable and affordable power to the Delmarva Peninsula, will run from northern Virginia, across southern Maryland, under the Chesapeake Bay, through Dorchester and Wicomico counties in Maryland, and end near Millsboro, Del.

Under the proposed route, the Dorchester County portion of the line will follow the Choptank River underwater and make landfall east of Cambridge, Md.

The line will run underground until reaching a point southeast of Route 16. It will then transition to above ground northeast of Route 50 before crossing over the Nanticoke River near Vienna, Md.

For the land portion of the route through Dorchester County, the company acquired the majority of the necessary rights-of-way to construct the line.

After hearing the public’s comments, PHI charted a route that will avoid sensitive sites such as the Blackwater National Wildlife Refuge and the proposed Harriet Tubman Underground Railroad National Historic Park.

The proposed Choptank Route is substantially different from earlier plans, with reduced length of the overhead portion by two thirds, and shortened poles. The river route is meant to minimize impact on farmland.

The MAPP line will fill a void in the region’s high-voltage transmission system.

The project, including the route, requires approvals from federal and state agencies, including the Maryland Public Service Commission. PHI’s selection of a proposed route is a necessary step in the formal agency review and approval process.

Interested persons may comment through public hearings to be scheduled by these agencies later in the process, as well as written remarks. Construction will begin when PHI has obtained all required permits and authorizations.

Pepco Holdings, is one of the largest energy delivery companies in the Mid-Atlantic region, serving about 1.9 million customers in Delaware, the District of Columbia, Maryland and New Jersey.

PHI units Pepco, Delmarva Power and Atlantic City Electric provide regulated electricity service; Delmarva Power also provides natural gas service. PHI provides competitive wholesale generation services through Conectiv Energy. PHI also provides retail energy saving products and sustainable services through Pepco Energy Services.



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