Power plant shutdown is short-lived

A polluting power plant was shut down this month, but it was switched on again after a massive electrical cable failed.

The Potrero Power Plant’s main generator will be switched off permanently once the $505 million Trans Bay Cable, which connects Pittsburg with The City, is running reliably.

Backup generators will be switched off, and the waterfront land will be redeveloped. But the cable has been plagued with problems.

Cable testing resumed Sept. 1 and 400 megawatts of power flowed through it. But the cable failed at 4 p.m. Wednesday, forcing the power plant to be switched back on, said Stephanie McCorkle, spokeswoman for the California Independent System Operator, which oversees the electrical grid.

jupton@sfexaminer.com

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