Dominion Energy Inc. plans to reduce leaks of the potent greenhouse gas methane from its vast natural gas pipeline and distribution network by 50 percent over the next decade.

The utility is targeting a 430,000 metric ton cut in methane leaks by 2030, the equivalent of taking 2.3 million cars off the road, Richmond,-Virginia-based Dominion said in a Feb. 12 statement.

The company will seek to recover the cost of the initiative from ratepayers, though it has yet to calculate the expense, Aaron Ruby, a Dominion spokesman, said in an email.

Methane, the main component of natural gas, absorbs more...