 The IAEA this week is participating in a United Nations Conference in Bangkok on affordable and clean energy. Participants from around the world are meeting to discuss the types of energy needed for sustainable development. With or without interest in nuclear power, countries can use IAEA modelling tools to help them make smart energy choices. Sustainable development goals and the target of a Paris Agreement on Climate Change are closely linked. Countries want meat-growing energy demand, improve energy security, but this must be done sustainably, reducing environmental and health impact. The IAEA can and does help those countries reach those objectives. Our energy planning tools, models, and analysis can help our member states develop their own national sustainable energy strategies.