Attacks on Pacific north-west power stations raise fears for US electric grid

A string of attacks on power facilities in Oregon and Washington has caused alarm and highlighted the vulnerabilities of the US electric grid.

The attacks in the Pacific north-west come just days after a similar assault on North Carolina power stations that cut electricity to 40,000 people.

As first reported by Oregon Public Broadcasting and KUOW Public Radio, there have been at least six attacks, some of which involved firearms and caused residents to lose power. Two of the attacks shared similarities with the incident in Moore county, North Carolina, where two stations were hit by gunfire. Authorities have not yet revealed a motive for the North Carolina attack.

The four Pacific north-west utilities whose equipment was attacked have said they are cooperating with the FBI. The agency has not yet confirmed if it is investigating the incidents.

Puget Sound Energy, an energy utility in Washington, reported two cases of vandalism at two substations in late November to the FBI and peer utilities, but said the incidents appeared to be unrelated to other recent attacks.

Experts and intelligence analysts have long warned of both the vulnerability of the US power grid and talk among extremists about attacking the crucial infrastructure.

The DHS has cited a document shared on a Telegram channel used by extremists that included a white supremacist guide to attacking an electric grid with firearms, CNN reported.