Edison is ordered to assess idle lines

In aftermath of Eaton fire, regulators tell utility to identify risks of unused equipment.

- BY MELODY PETERSEN

State regulators have ordered Southern California Edison to identify fire risks on its unused transmission lines such as the century-old equipment suspected of igniting the devastating Eaton wildfire.

Edison also must tell regulators how its 355 miles of out-of-service transmission lines located in areas of high fire risk will be used in the future, according to a document issued by the Office of Energy Infrastructure Safety on Dec. 23.

State regulations require utilities to remove abandoned lines so they don't become a public hazard. Edison executives said they did not remove the Eaton Canyon line because they believed it would be used in the future. It last carried power in 1971.

The Office of Energy Infrastructure Safety said Edison must determine which unused transmission lines are most at risk of igniting fires and create a plan to decrease that risk. In some cases that might mean removing the equipment entirely.

While the OEIS report focuses on Edison, the agency said it also will require the state's other electric companies to take similar actions with their idle transmission lines.

Scott Johnson, an Edison spokesman, said Monday that the company already had been reviewing idle lines and planned to respond to the regulators' requests. He said Edison often keeps idle lines in place "to support long-term system needs, such as future electrification, backup capacity or regional growth."

"If idle lines are identified to have no future use, they are removed," he said.

Johnson said that since 2018, Edison has removed idle lines that no longer had a purpose seven times and provided a list of those projects.