PHI's MAPP Transmission Line Continues
to Add Benefits
Dec 4, 2008 - BUSINESS WIRE
Pepco Holdings, Inc. (NYSE:POM) continues
to make progress in expanding the benefits for its
Mid-Atlantic Power Pathway (MAPP) high-voltage transmission
line by increasing the line's reliability to carry
electricity and providing greater access to broadband
Internet for the Delmarva Peninsula.
The company announced today that the
PJM Interconnection Board, the organization responsible
for controlling the flow of bulk power in the mid-Atlantic
region, has approved the use of direct current cabling
for a portion of the line from Calvert County in
southern Maryland to the Indian River substation
"By switching from alternating current
to direct current for this portion of the 500-kilovolt
line we will be able to better control the flow
of power along the new line and safely direct more
electricity to areas in need," said Vince Maione,
project manager for MAPP.
He noted that direct current lines
allow for better control of power flow than alternating
current and also:
-- Are easier to place avoiding sensitive
-- Provide greater protection against
-- Increase power transfer capabilities.
Maione said the cost of the upgraded
line is projected at $1.425 billion. When completed
in 2013, MAPP will add about 40 cents per 1,000
kilowatt hours a month to customers' electric bills,
an amount that had been factored in to earlier estimates
to include the upgrade to DC current. All 51 million
customers served by PJM in 13 states and the District
of Columbia will share in the cost of constructing
MAPP will run approximately 230 miles
from northern Virginia, across southern Maryland
and under the Chesapeake Bay to the Delmarva Peninsula
and north to southern New Jersey.
About PHI: Pepco Holdings, Inc., headquartered
in Washington, D.C., delivers electricity and natural
gas to about 1.9 million customers in Delaware,
the District of Columbia, Maryland and New Jersey.
Through its subsidiaries Pepco, Delmarva Power and
Atlantic City Electric, PHI delivers regulated electricity
and natural gas service. PHI provides competitive
wholesale generation services through Conectiv Energy
and retail energy products and services through
Pepco Energy Services.
SOURCE: Pepco Holdings, Inc.