A widespread power outage across San Diego has shut down EQ Thursday afternoon (September 8, 2011). No information on the cause or when power will be restored is yet available. For more information on the power outage, it is suggested that you Google, "San Diego power outage".
UPDATE: Customers should expect to be without power for hours, possibly through the night and into Friday. SDG&E (San Diego Gas and Electric) said 1.4 million customers have been affected by the outage.
UPDATE: As of Friday, September 9, EQ should be back up.