We just notify all the life-safety agencies. We can't notify every household and every business. Those that were affected in Point Reyes Station seemed to take it all in stride. At West Marin school, students remained at their desks and minded their lessons, helped by bright afternoon sunlight. The next in line to suffer a rotating blackout will be customers in Block 6.
Block numbers have nothing to do with geography.
Also taking blame is a secret bidding scheme among power generators. The California Power Exchange each days holds an auction for the next day's consumption. During the auction, utilities compete to buy electricity from power generators. State officials were caught unawares by the federal commission's action because the proposal was described on a public hearing notice as merely a stock transfer.