The 2018 Energy Efficiency Market Report by the IEA highlights global trends in energy efficiency, emphasizing that while improvements are evident, the overall energy demand is increasing due to economic growth and consumer behavior changes. Key findings indicate that energy efficiency gains are uneven across sectors and countries, with significant potential remaining untapped, particularly in transport and buildings. The report also outlines the need for stronger policies and investment to realize the full benefits of energy efficiency by 2040 to meet climate targets.