How does the rotation work?
SCE has identified the circuits available for use in rotating outages according to CPUC rules. A circuit is an overhead or underground electrical line that supplies power to a combination of residential and/or commercial customers within a given geographical area. These circuits have been arranged into groups. Each group includes a number of circuits that comprise approximately 100 megawatts of electricity usage per group, with each circuit generally serving between 800 and 2,000 customers. The amount of power Cal-ISO designates for curtailment will determine the number of groups that are interrupted at any one time (e.g., if Cal-ISO calls for 500 megawatts, we would interrupt service to about five groups). The groups will be interrupted, as operating conditions permit, and each outage is expected to last about one hour.
