Mark Smith, Director Water Programme, IUCN - The next frontier is to accelerate the use of a range of renewable energy approaches in water management. This includes renewable energy (wind, solar) to power pumps and water treatment. It also entails producing energy from the water and used water cycle from biogas or mini hydro. Where are the opportunities to address the water, energy-food-nexus through accelerating the shift to renewable energy? How do decentralised vs centralised energy – water management strategies play out in developing and emerging economies?