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SCE formally notified the Nuclear Regulatory Commission (NRC) on June 12, 2013 that it had permanently ceased operation of Units 2 and 3 on June 7, 2013. The notification, called a Certification of Permanent Cessation of Power Operations, sets the stage for SCE to begin preparations for decommissioning.

Decommissioning is a well-definedĀ NRC processĀ that involves transferring the used fuel into safe storage, followed by the removal and disposal of radioactive components and materials. Longer term, this process calls for reducing residual radioactivity to a level that supports termination of the NRC license.

We want the San Onofre decommissioning process to be managed in an inclusive, forward-thinking and responsible way. In particular, the current and previous owners of San Onofre are committed to creating an advisory Community Engagement Panel (CEP) to bring together diverse stakeholders and open a conduit of information and ideas between the owners and the public. The panel would ensure that all key interests are included and heard: Elected representatives of the surrounding cities and counties, the military, local environmentalists, business, labor, customer interests and academia.

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Key Facts


Units 2 and 3 of the San Onofre nuclear plant, located near San Clemente, Calif., were capable of generating 2,200 megawatts of electricity, enough power to serve 1.4 million average homes at any point in time.



San Onofre Unit 2 began commercial operation in 1983 and Unit 3 in 1984. Unit 1 went into service Jan. 1, 1968 and was retired in 1992.



San Onofre is jointly owned by SCE (78.21 percent), San Diego Gas & Electric (20 percent) and the city of Riverside (1.79 percent).