Southern California Edison (SCE) is closing down the troubled San Onofre Nuclear Generating Station in California. The plant’s two reactor units have been shut down since 2012 after a small leak was detected in a steam generator manufactured by Mitsubishi Heavy Industries.
The California utility originally submitted plans to the Nuclear Regulatory Commission to restart the reactors, but uncertainty about whether the plan would be accepted and the length of time involved during which SCE would need to maintain the plant in a state of readiness led to the decision to retire the plant.