The definition of energy sustainability is based on three core dimensions â energy security, energy equity, and environmental sustainability. More frequently than not, these three objectives are mutually contradictory or incompatible. The future of energy thus poses a trilemma, i.e. the need to navigate difficult trade-offs between the three major objectives. Energy â oil, gas, power â remains one of the biggest businesses, and maintains a strategic characterization that sets it aside from other economic sectors. As such, it attracts the attention of industrial, financial and political actors internationally. The course aims at providing students with the critical knowledge and skills to avoid superficial generalizations and simplifications â which unfortunately remain all too common.