I can't help but point out the slight irony of a public utility's radio system being taken out by its own power outage. Anyway... I am currently in Northern CA but had spent the last few months figuring out some of the SDG&E 900 MHz talkgroups. The most active talkgroups are the "Distribution North 1" and "Distribution South 1," however I'm sure with this incident a lot of seldom used channels are popping up (like the EOC, Emergency Troublemen, and various Operations & Maintenance divisions). If anyone wanted to give a listen now would be the time to figure them out.