reporter brandon rittiman plains for nearly a year and a half, pg&e denied knowing if it had sparked the fire. >> all this time pg&e has been implying it didn't spark the kincade fire or saying it didn't know enough to be sure. but we had reasons to suspect pg&e early on, like this video showing a flash of light near pg&e's power line just before the fire started. last year, cal fire named pg&e's power line as the cause. even then pg&e did not take responsibility. pg&e said it was waiting to read the full report. suddenly this week, pg&e's vice president of wildfire safety said this about the kincade fire. >> we understand at a high level that our equipment was responsible for that fire. >> reporter: that admission from pg&e vice president aaron johnson was news to the guy he told it to, will abrams who lost his home in the 2017 fire says it's not just about blame. the kincade fire was two fire seasons ago. it sparked in the middle of blackouts went to prevent fires. pg&e has been retooling those blackouts without sharing what it knows about how the kincade fire sparked. >> that info