Mid-Atlantic Power Pathway (MAPP)

The MAPP project will enable transfer of power sources west of the Chesapeake Bay from the Delmarva Peninsula to the Mid-Atlantic region. It will relieve the current east west grid. The project includes about 69 miles of AC lines and 83 miles of DC lines. One of the key components is a 39 mile HVDC undersea cable across the Chesapeake Bay.  The project has been authorized an 11.3% ROE through their Order 679 filing with FERC. In August 2011, the project online date was shifted from 2015 to the 2019-21 timeframe.  It was delayed because of slower than anticipated demand growth in the region due to the recent recession.  AC/DC converters will be located in three locations along the path.  The majority of the project will be built along existing right-of-ways.  In August 2012, the PJM decided to remove the project from the RTEP 15 year plan due to lower electric demand and the development of new generation in the area.

Project Sponsor Line Miles Voltage (kV) From State To State Year in Service
PEPCO Energy Services 152 500 MD DE 2019
Estimated Costs ($M) Voltage Type Project Status Project Group Origin Point Destination Point
1005 Suspended Possum Point Indian River
Interstate Build Start NERC ISO/RTO Country Project Partners
RFC PJM US PHI and Baltimore Gas & Electric