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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.
According to EEI, building a new overhead distribution line costs between $136,000 and $197,000 per mile, depending on several factors including population density (urban areas being the most expensive).The cost of new underground lines ranges between $409,000 and $559,000 per mile.ccording to EEI, building a new overhead distribution line costs between $136,000 and $197,000 per mile, depending on several factors including population density (urban areas being the most expensive).