https://www.siliconvalley.com/2021/08/03/pge-says-equipment-may-have-sparked-fly-fire-now-merged-with-dixie-fire/

PG&E’s equipment may have helped to spark the Fly Fire, a fast-growing blaze that quickly merged with the state’s largest of the season about two weeks ago in Plumas County, the utility told regulators Monday night.

Sometime between 3 and 4 p.m. on July 22, a PG&E distribution line serving the Butterfly Valley Twain Road and Highway 70 area “reported alarms and other activity” when a portion of it was de-energized, the utility said in a new report to the California Public Utilities Commission.