Seen here is a 100-kilowatt solar power plant built on stilts over the water, the first of its kind in the world, at a multi-purpose dam in Hapcheon, 354 kilometers southeast of Seoul, whose operations began on Nov. 3, 2011. Over-the-water plants generate 10 percent more power than ones on land, according to the state-run Korea Water Resources Corp. (K water). K water plans to build additional over-the-water solar plants with a combined capacity of 1,800 megawatts at 31 dams nationwide by 2022.