 On Sept. 8, 2011, an estimated 5 million people suffered a temporary loss of electricity from Arizona to San Diego and into parts of Mexico.All utilities involved in providing energy to the affected areas were investigated by NERC and FERC.While not admitting any wrongdoing, in 2014 IID agreed to a $12 million settlement with the Federal Energy Regulatory Commission, bringing to a close the federal probe into the events surrounding the outage.