The main challenges facing the nuclear industry are not in the production and delivery of electricity, but in securing the policy support required for it to expand its contribution of sustainable and low-carbon energy. This was the message of Philippe Costes, senior advisor at World Nuclear Assocation, to delegates at the Nuclear Power Plants Expo & Summit in Istanbul this week. "Nuclear energy has a vital role to play in a global sustainable energy mix, which must first of all meet the world's growing need for electricity. Over the next 30 years, the global population will rise towards nine billion, the global economy will continue to grow and technological developments will create greater demand for electricity. There is an underlying need for dispatchable electricity. We live in a world that requires a 24/7 supply of electricity and nuclear is uniquely placed to provide this."