Solar and hydro are generally the first items that come to one’s mind when thinking about prominent renewable energy generation. Over 60 countries generate half of their electricity from hydropower. However, the feasibility of hydroelectricity projects is increasingly fraught with complex geopolitical problems, especially when the social, economic, and environmental effects of such projects cross state boundaries. This is exemplified by the various dispute by a range of parties along the Mekong River – a river system that traverses over six different national borders and provides for approximately 72 million people? How do you effectively and ethically organise hydro power for such a river?