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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.
1 This type of electrical power transmission and distribution may decrease operational costs over the lifetime of cables. 2  It is more expensive since the cost of burying cables at transmission voltages is greater than overhead power lines. 3  The cost to bury power lines will be around $20 to $40 per foot.