zeljko uljarevic manages the various water infrastructure projects for the kfw in montenegro. he's worried about the timeline. this sea outfall pipe has to be laid 1000 meters out in the ocean before the tourists arrive. this is a discharge pipeline for the treatment plant through which treated sewage is pumped into the ocean at a depth of 35 meters. divers are to fasten the pipes onto the ocean floor so they aren't washed away by the current. the clock is ticking. in a few days, the beaches here will be full of tourists. tourism is montenegro's biggest source of revenue. but more tourists also means higher power consumption. the electricity comes from montenegro's hinterland, one of europe's most water-rich regions. clean hydro power meets almost 70 percent of the country's power requirements. but demand is increasing. the country's largest hydropower plant is located at the piva reservoir. the dam walls are 200 meters high. for decades, it's been supplying a large amount of montenegro's electricity. but the facility is now outdated and is being retrofitted with the help of k