We take seriously the responsibility of operating the plant safely. Our employees and their families live and work in this community. We are in the business of safely providing clean and reliable electricity to our customers.
Value of San Onofre
The San Onofre plant has produced more than 350 billion kilowatt-hours of electricty since its beginnings in 1968 - exceeding all other individual power sources in the region.Learn More
Get an up close tour of the San Onofre plant, from the steam generators and reactors, to the spent fuel pool and seawall.Learn More
How We Make Electricity
San Onofre generates 2,200 megawatts of power, meeting the needs of 1.4 million homes and businesses at a point in time.Learn More
For more information about the San Onofre plant, contact our community relations representatives or request a speaker.Learn More
One of San Onofre's two generating units, Unit 2, went into commercial operation in 1983 and can provide roughly 1,100 megawatts of power to the Southern California grid. Unit 3 began operation in 1984 and has a similar generating capacity. Unit 1, a smaller unit, went into service Jan. 1, 1968, and was retired in 1992.
San Onofre is the only large Southern California power plant that is virtually free of pollutants and carbon emissions. There are no smokestacks at San Onofre. Eighteen square miles of solar panels would be needed to duplicate the amount of clean power generated by San Onofre's two units.
San Onofre produces 19 percent of the power used by Southern California Edison (SCE) customers. Nuclear power provides roughly 20 percent of all U.S. electricity and is the nation's No. 1 source of emission-free electricity.