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Could the massive West Coast blackout have been prevented?

Initial reports blame a utility worker doing maintenance near Yuma, Ariz., for triggering the massive blackout that affected residents across a large swath of southern California and Mexico.

By Daniel B. WoodStaff writer / September 9, 2011

A stranded passenger sleeps in the baggage claim area at San Diego's Lindbergh Field after a blackout Thursday, Sept. 8. A power outage is affecting millions of people across southern California, Arizona and Mexico.

Denis Poroy/AP

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Los Angeles

The precise reason for the 12-hour, full system blackout affecting 5 million people across a large swath of Southern California and Mexico Thursday is still being investigated. By 2:15 a.m. Pacific time Friday, all but 200 megawatts of the initial 4,300 lost megawatts had been restored according the North American Regulatory Commission (NERC).

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Initial reports blame a utility worker doing maintenance near Yuma, Ariz., for triggering the massive blackout that affected residents across San Diego County, southern Orange County, western Arizona, northern Baja California and parts of Mexico.

“NERC and [the Federal Energy Regulatory Commission] are partnering to conduct a full inquiry into the cause of this event,” said Gerry Cauley, president and chief executive officer of NERC, in a statement.

Until investigations are complete, energy and utilities experts are raising serious questions about safety and oversight procedures, backup plans, and the overall health of the electrical grid in the region.

“It makes one wonder that if this could happen unintentionally by a single person doing routine maintenance, what might terrorists do intentionally,” says Sterling Burnett, senior fellow with the National Center for Policy Analysis, a nonprofit research institute in Dallas. “This shows the need for revamping and improving our entire electrical grid system, most of which is 20 to 30 years old. Most people have already acknowledged this but I don’t think they realized how soon it was needed and how fragile the existing system is.”

Several analysts say more “redundancy” needs to be built into the system, specifically the incorporation of backup procedures that kick in when something goes wrong, like a second pair of brakes in a subway train. The redundancies take the onus off of inspectors – helping to avoid human error.

“Sometimes the best way to prepare for every possible contingency from natural disaster to human error is simply to build in redundancy,” says Nabil Nasr, a member of the National Research Council Board on Manufacturing and Engineering Design. “So many things can go wrong that it becomes hard and expensive to prepare and design for them all.”

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