electric utility work fag here. heard on the radio on my way home that there were reported errors on a transmission line just prior to the fire outbreak.
Was it a camp fire?
PG&E is notorious for failing to maintain its lines and has been proven to be liable for prior fires.
Didn't take me long to find the sauce.
http://amp.kcra.com/article/report-pgande-line-experienced-outage-minutes-before-butte-county-wildfire-ignited/24900602