UPDATE 1-SCE Calif. San Onofre reactor connects to grid

LOS ANGELES, May 13 (Reuters) - Southern California Edison's 1,080-megawatt Unit 3 at San Onofre nuclear power station in California reconnected to the regional power grid on Tuesday after a maintenance outage, SCE said.

The unit shut on April 16.

At 4 p.m. PDT Tuesday, the unit was at 16 percent of its capacity, SCE said.

The 2,150 MW San Onofre station is located in San Clemente, about 60 miles north of San Diego. There are two units at San Onofre, the 1,070 MW Unit 2 and the 1,080-MW Unit 3. Those units entered service in 1983 and 1984.

Unit 2 continued to operate at full power.

One MW powers about 650 homes in Southern California.

So Cal Ed, a subsidiary of Edison International (EIX.N: Quote, Profile, Research, Stock Buzz), operates the station for its owners, So Cal Ed (78.21 percent), Sempra Energy's (SRE.N: Quote, Profile, Research, Stock Buzz) San Diego Gas & Electric subsidiary (20 percent), and the California city of Riverside (1.79 percent).

Edison International, of Rosemead, California, owns and operates about 14,000 MW of generating capacity, markets energy commodities in North America, and transmits and distributes electricity to about 4.6 million customers in central and southern California. (Reporting by Bernard Woodall and Scott DiSavino; Editing by Gary Hill)