On April 16, 2013, an attack was carried out on Pacific Gas and Electric Company's Metcalf transmission substation in Coyote, California, near the border of San Jose.
[1][2][3] On the morning of April 16, 2013, a team of gunmen, using rifles, opened fire on the Metcalf Transmission Substation, severely damaging 17 transformers.
[7][8] Former 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.
[7] 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.
[6][11] 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.