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Mid-Atlantic Power Pathway (Delaware and Maryland)

STATUS:  In progress with opposition

TYPE: Transmission

OPPOSITION:  Environmental groups, local residents

PROSPECTS:  Indeterminate

BACKGROUND:  The Mid-Atlantic Power Pathway (MAPP) is a proposed 150-mile 500-kilovolt transmission line to be built by Pepco Holdings in parts of Delaware, Maryland and Virginia.  MAPP was first proposed in May 2006 as a 230-mile line stretching into New Jersey.  The current project was approved by PJM Interconnection in October 2007 and by the Federal Energy Regulatory Commission (FERC) in November 2008.  The $1.2 billion project would support current and future demand for electricity, and is expected to provide access to 1,300 megawatts of renewable wind generation.  MAPP was originally to be completed in 2014, although delays have changed the expected in-service date to 2015.

Several national and local environmental and citizens groups oppose the project, including Sierra Club, the Eastern Shore Land Conservancy, the Piedmont Environmental Council, the Sugarloaf Conservancy, the Chesapeake Bay Foundation and Dorchester Citizens for Safe Energy.  Their concerns include water quality, noise, traffic, air quality, deforestation, loss of wetlands, aesthetics and electromagnetic radiation.

In January 2010, Pepco suspended work on MAPP to allow it and PJM to study future transmission needs for the region.  In August 2010, PJM reaffirmed the need for MAPP and ordered Pepco to move forward with the project.

SOURCES:  MAPP Website: http://webapps.powerpathway.com/mapp/; http://webapps.powerpathway.com/mapp/page/schedule/index.v3page;jsessionid=izmdoox4rzh8; http://webapps.powerpathway.com/mapp/page/permitting/index.v3page;jsessionid=izmdoox4rzh8;
Pepco: http://www.pepco.com/energy/reliability/pathway/; http://www.pepcoholdings.com/about/news/archives/2008/article.aspx?cid=1063);
Washington Business Journal: http://www.bizjournals.com/washington/stories/2010/01/11/daily12.html;
Transmission & Distribution World: http://tdworld.com/overhead_transmission/pjm-reaffirms-mapp-need-0810/;
Southern Maryland Newspapers Online: http://www.somdnews.com/stories/11192010/rectop181712_32384.shtml;
Eastern Shore Land Conservancy: (http://www.eslc.org/pages/mapproject.php;
Sugarloaf Conservancy: http://nomoretowers.org/;
Baltimore Sun: http://ceds.org/DCSE/BaltimoreSun7-11-09.pdf

Last Updated:  December 9, 2010