I was in a Sav-On on Vine at Melrose when the power went out. Not sure if they were on generators, but their power came back up almost immediately (although their server and the registers were still out 10 minutes after the blackout, when I left).
All traffic lights out from there to home (Wilshire/Crenshaw). Our power just came back on a minute ago.
Oh–best part was a cop was writing a ticket at 3rd/Vine instead of dealing with outed light/traffic mess.