^ a b "PG&E Offers $250,000 Reward In San Jose Substation Attack".Archived from the original on July 13, 2014. Power Grid Vulnerable to Attack: Congressional Research Service". ^ "Snipers Coordinated an Attack on the Power Grid, but Why?"."Sophisticated but low-tech power grid attack baffles authorities". ^ Serrano, Richard Halper, Evan (February 11, 2014)."Hacking The Electric Grid Is Damned Hard". In 2012, the National Research Council of the National Academies of Sciences, Engineering, and Medicine published a declassified report prepared in 2007 for the United States Department of Homeland Security that highlighted the vulnerability of the national electric grid from damage to high voltage transformers. In October 2015, it was reported that the Department of Homeland Security had found indications that the attack may have been committed by "an insider". Power Grid: High-Voltage Transformer Substations repeatedly cited the attack and noted that, ". in the wake of the Metcalf incident, the FERC has ordered the imposition of mandatory physical security standards (for substations) in 2014." Investigation Ī July 2014 report from the Congressional Research Service titled Physical Security of the U.S. In June 2014, PG&E announced that it intended to spend $100 million over a three-year span on upgrading security at substations throughout its territory, including the Metcalf location. īoth PG&E, the company which operated the transformers, and AT&T offered $250,000 rewards for any information leading to the arrest and conviction of the perpetrators of the attack. While some nearby neighborhoods temporarily lost power, “the big users weren’t even aware Metcalf had happened”, according to an expert from the Electric Power Research Institute. To avert a black-out, energy grid officials were forced to reroute power from nearby Silicon Valley-based power plants. Seventeen transformers were seriously damaged, requiring over $15 million worth of repairs. Under slightly different conditions, there could have been serious power outages or worse." Aftermath It took weeks to replace the damaged parts. Henry Waxman, a ranking member of the United States House Committee on Energy and Commerce, stated that the attack was "an unprecedented and sophisticated attack on an electric grid substation with military-style weapons. While Wellinghoff described the attack as "the most significant incident of domestic terrorism involving the grid that has ever occurred", a spokesman for the Federal Bureau of Investigation stated that they did not believe a terrorist organization was responsible. įormer Chairman of the Federal Energy Regulatory Commission Jon Wellinghoff stated that military experts informed him that the assault looked like a "professional job", noting that no fingerprints were discovered on the empty casings. 3:15 a.m. – A PG&E worker arrived to survey the damage.Unable to get past the locked fence and seeing nothing suspicious, they left. 1:51 a.m. – Law-enforcement officers arrived, but found everything quiet.More than 100 expended 7.62×39mm cases were later found at the site. 1:50 a.m. – Another apparent flashlight signal, caught on film, marked the end of the attack.1:45 a.m. – The first bank of transformers, riddled with bullet holes and having leaked 52,000 US gallons (200,000 l 43,000 imp gal) of oil, overheated, whereupon PG&E's control center about 90 miles (140 km) north received an equipment-failure alarm.1:41 a.m. – Santa Clara County Sheriff's department received a 911 call about gunfire, sent by an engineer at a nearby power plant that still had phone service.1:37 a.m. – PG&E received an alarm from motion sensors at the substation, possibly from bullets grazing the fence.It was followed by the muzzle flash of rifles and sparks from bullets hitting the fence. ![]()
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