South Korea and the US on Wednesday reached a revised deal on nuclear energy after four-and-a-half years of negotiations, the foreign ministry here said.
Seoul and Washington launched the negotiations in October 2010 to revise their atomic energy agreement that had taken effect in 1973, Xinhua news agency reported.
The agreement was till March 2014, but the deadline was extended to March next year amid big differences on the revised pact.
The agreement has limited South Korea's ability to enrich uranium for power generation and reprocess spent fuel rods.
No further details have been made available. The two sides plan to initiate the revised agreement at 4.15 p.m. local time in the headquarters of South Korea's foreign ministry.
South Korea, which is operating 23 nuclear power plants, depends on nuclear power for one third of its electricity needs.