they're plowing 2.8 million euros into it. without that money, the project wouldn't be profitable for eletrosul. it would be too expensive, compared to other energy sources. >> it's about triggering projects and markets. the 2.8 million is a comparatively small sum when you consider the kind of market that could develop here, and the climate-friendly effect, from which german industry can ultimately also profit if it can sell its products competitively here. >> until just recently, these photovoltaic panels would have cost twice as much. the drop in prices in the sector makes solar power competitive even against hydro power. at least once a week eletrosul manager franklin fabricio lago flies out to his building sites. the power company is building several small plants. brazil gets about 80% of its electricity from hydro power. that makes the country the frontrunner in renewable energy. but in periods of drought, like the one ten years ago, that source of energy isn't reliable. >> we need to diversify brazil's power portfolio.

ethiopia has to come up with the 3.6 billion euros it self. the project relies on the support of citizens. >> after completion, it would be down here. we are progressing on the right side of the river. we can temporarily divert the flow water. >> close to the border with sudan, work continues on the largest dam in africa. work continues as it reaches the mediterranean. 6000 employees are working to move huge masses of earth. soon, that number will double to 12,000, people working in three shifts a day to complete the project by 2017. >> we need power. in the short term. because, as you have already seen the country, there are a lot of development and works that are coming. for him, the dam is the solution to many of his country's problems. it could help to create jobs and battle poverty, but only if the rest of the funding for the mega project comes in. >> the world bank is backing a corporation agreement that would bind all nile states to use its waters in a sustainable way. so far, it has not been signed. from africa to central america where

tuition fees are 10,000 euros a year. balinese families can't afford that, so the green school remains an oasis for the children of wealthy foreigners. still maybe one day they will share the ecological knowledge they learned here back in their home countries. and if you want to see any of these reports again or to join our global discussion you can find us online. that was global 3000 for this week. thanks for watching and from me and the whole team here in berlin bye-bye. captioned by thenational captioning institute-- www.ncicap.org-- egypt's chief justice is in fice as the old government moves out. i'm norah kyle. you're watching "al jazeera." also on the program. latin american leaders rally around bolivia. portugal's government in crisis. we'll hear from pensioners who say the politicians are gambling with their future. and lady liberty is back in business. new york's mostou

the coastal towns are investing more than 150 million euros in the entire water supply and sewage treatment system - the biggest investment in 30 years. a large chunk was financed by germany's international development bank, the kfw. 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