I had 3 company came to my house in San Jose and did not find problem with flickering lights. I called Prasad electric and guy name raj came. He spend 10 min and found the problem. He looked very young and I ask him how old are you? I feel bad asking him but this guy is so smart. he told me he was 31 years old. I said omg you are the best electrician in town since I spent $1,200 which I payed to other companies. The problem raj found was inside the panel box on PG@E side. please use Prasad electric.