The World Energy Outlook 2015 presents updated projections for the evolution of the global energy system through 2040, examining the prospects for fossil fuels, renewables, the power sector and energy efficiency, and analysis on trends in carbon emissions and fossil-fuel and renewable energy subsidies. In particular, the 2015 edition is informed by in-depth analysis on key issues and trends such as the lower oil price environment, India’s energy outlook, opportunities and challenges for unconventional gas, and the competitive position of renewables and the role of energy efficiency.