 In exchange two light water reactors would be constructed in North Korea by 2003 at a cost of $4 billion, primarily supplied by South Korea.In the interim, North Korea would be supplied with 500,000 tons of heavy fuel oil annually, at no cost, to make up for lost energy production.North Korea was required to come into full compliance with its IAEA safeguards agreement, allowing the IAEA to verify the correctness and completeness of its initial declaration, before key nuclear components of the reactor would be delivered.