Energy is fundamental to the quality of life on the earth. It is a key ingredient in all sectors of modern economies. We are totally dependent on an abundant and uninterrupted supply of energy for living and working. Meeting the growing demand for energy sustainably is one of the major challenges of the twenty-first century. By 2050, the world’s population is set to increase from 6.6 billion currently to more than nine billion. Energy use during this period is set to double. Consumption of energy resources by humans adds substantially to CO2 emissions that contribute to climate change. Urgently arresting climate change is in the interests of all nations. Transition to a low carbon economy is therefore a global aim that envelops every single nation. That is why an international forum for the exchange of ideas and experience amongst experts from a broad range of disciplines on the technology, policy and economic frame work is essential. Such a forum will lead to better understanding of energy issues on local, regional and global scales. ICEST offers the opportunity for scientists, professionals, policymakers and other parties to review recent developments in this rapidly changing discipline. The aim is to create a global sustainable energy infrastructure.