According to CNN, "In an incident report filed with state regulators Thursday, Pacific Gas & Electric (PG&E) said that just before the fire started Wednesday night, one of PG&E's high-voltage transmission lines went out. PG&E intentionally had shut off power in the area Wednesday to prevent equipment from sparking wildfires during dangerous weather conditions. That transmission line was not supposed to be "de-energized" because it was not part of the public safety power shutoff, according to the company."