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Extremists have developed 'credible, specific plans' to attack the US power grid, DHS says in new warning
Domestic terrorists have developed "credible, specific plans" to attack the U.S. power grid and view it as a "particularly attractive target given its interdependency with other infrastructure sectors," according to a security briefing issued Monday by the Department of Homeland Security (DHS) and first reported by The Daily Beast. The alert warned of "physical damage" to electrical infrastructure, raising the specter of the 2013 sniper attack on Pacific Gas & Electric's Metcalf substation that damaged 17 transformers. The long lead time needed to replace large transformers is a threat to U.S. grid resilience, and in 2015 Congress directed the creation of a strategic reserve for critical power system equipment.