Several San Francisco landmarks, including the newly installed light display on the Bay Bridge’s western span, will go dark tonight during “Earth Hour.”

“The Bay Lights,” the Golden Gate Bridge, City Hall and other landmarks will power down from 8:30 p.m. to 9:30 p.m. to commemorate Earth Hour, a global event organized by the World Wildlife Fund to raise awareness about climate change, according to organizers.

Cities worldwide, including several Bay Area communities, are set to participate.

Lighting for The Bay Lights display costs about $11,000 annually, or about $4.25 per day, representatives said.

Solar panels installed by CleanPath in Davis, Calif. are meant to offset all energy used by The Bay Lights, the representatives said.

Laura Dixon, Bay City News

Elsewhere: New Bay Bridge Light Show Goes Dark For Earth Hour [CBS]

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