The World Water Development Report 2014 shines light on the interdependence between the management of water and energy. Thanks to its clarity and relevance, this important document reminds us that the linkages between freshwater and energy are crucial to human well-being and sustainable socio-economic development. Water is essential throughout the production, transportation and use of energy, which, in turn, affects the water cycle. This interdependence calls for an improved cooperation between all actors, given the importance of freshwater and energy for sustainable development.