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Dominion Virginia Power is beginning an estimated $2 billion program to place about 4,000 miles of historically outage-prone electric power lines underground by 2026.
Moving power lines underground can cost as much as $2.1 million per mile in a city, with an average of $832,383 a mile in urban areas and $723,692 in suburban areas, according to a 2009 study conducted by the trade group.oving power lines underground can cost as much as $2.1 million per mile in a city, with an average of $832,383 a mile in urban areas and $723,692 in suburban areas, according to a 2009 study conducted by the trade group.