San Francisco Will Study Golden Gate Tidal Movement As Energy Source

SAUSALITO, CA - JUNE 20: People look on as a cruiseliner prepares to pass under the Golden Gate Bridge June 20, 2007 in Sausalito, California. Pacific Gas and Electric has launched an estimated $1.5 million research program to study the possibility of submerging turbines under the water to gather energy from tidal flows. A previous study conducted by the Electric Power Research Institute in 2006 came to conclude that the tides that pass under the iconic Golden Gate bridge are the best on the West Coast of the U.S. to generate power. (Photo by Justin Sullivan/Getty Images)