It began a little before 5am and lasted until 9. Not sure why they were off, but PG&E, the local electric company, said it was unrelated to any of its equipment and there weren't any outages in the area. It's hard to believe there's no generator at the studios.
www.mercurynews.com
KTVU back on the air after being totally dark for hours
Station used national news feed, with some local updates after its signaled was restored.
www.mercurynews.com