“A coronal mass ejection from the Sun could send a magnetic field toward Earth that could cause an E3-like effect on the transformers that make up our electrical grid,” Bump said. “Butt repeatedly noted that while the threat of a nuclear EMP was small, the threat of a solar one was real.” More to the point, the nation’s power grid is vulnerable to threats much closer to home.
In what amounts to a woefully underreported terrorist attack in April of 2013, more than one sniper opened fire on a California electrical substation. Just after 1 a.m., the shooters methodically hit and disabled 17 large electrical transformers, forcing electric grid officials to redirect power from across the state in order to avoid a blackout. It took nearly one month to make the necessary repairs. The assailants were never caught.”