SEOUL North and South Korea on Saturday agreed to open working-level talks in the coming week to discuss ways to investigate the North's energy shortages with a view to possible power supplies from the South. They also agreed on launching separate working-level talks this month to discuss ways to jointly control floods of the Imjin River, which is shared by both Koreas, AFP quoted the Finance-Economy Ministry as saying. The two sides on Saturday exchanged signed documents containing the agreements which had been broadly reached at the first meeting of the Inter-Korean Economic Cooperation Committee in Pyongyang in December. Under the agreement, which took effect with the exchange of the documents, the two sides will hold the first working-level talks on possible power supplies from the South in Pyongyang from Wednesday through to Saturday. They will also open the separate talks on the Imjin River floods in the North's capital on February 21-24. The two Koreas additionally agreed to put off the second session of the Economic Cooperation Committee in Seoul to some time in late February instead of the originally scheduled February 6 to 8. The North has been hit hard by energy and food shortages since the collapse of the socialist bloc and by a wave of natural disasters. South Korean President Kim Dae-Jung and North Korean supreme leader Kim Jong-Il signed a reconciliation accord at a meeting in June. Their historic summit helped start a thaw across the world's last Cold War frontier. It was followed by various channels of dialogue, including economic and military meetings as well as Red Cross talks aimed at helping reunite relatives separated for decades by the division of Korea. The two sides have already agreed to restore a railway and a highway across their heavily fortified border to reconnect Seoul and Pyongyang and reach the city of Shinuiju, on the North's border with China.