The concept interprets the term energy in the widest sense possible. Energy is all kind of activity, production, economy, transport, social life etc. So far urban development was dealing with these energies separately. The result are inefficient and mono-functional systems that waste energies instead of creating synergies between them. Our project is radically integrating Astana’s energies to create multifunctional and hybrid spatial systems that work on different scales and that thus use infrastructure more efficiently, a quality that Astana’s car dominated city layout currently lacks. While the Expo Event will last for only three months, the Expo site will remain for decades to come. Our proposal sees the Expo Event as an opportunity to upgrade the urban infrastructure of Astana and to implement a prototype for long-term, sustainable and energy efficient urban development in Kazakhstan. Future Energy not only means to change energy production, but also to minimize impact and energy needed for the built environment. To achieve this flexibility and lightness of built structures are key factors. While the public infrastructures proposed have long life spans the Expo and the Expo City have shorter ones. The Expo complex is a statement about lightness through its light and transparent architecture that has a minimal impact and that is temporary and fully dismountable and reusable after the Expo.