This webinar will explore three interrelated themes shaping the future of data centre energy use. The race between consumption and efficiency Demand for digital services continues to rise, driven by developments in artificial intelligence, cloud computing, streaming, and the Internet of Things. While these trends increase electricity use in data centres, improvements in server energy efficiency are helping to partially offset this growth. This session will frame the challenge of how to sustain or accelerate efficiency progress to keep pace with rising workloads and energy demand. A decade of progress: retrospective analysis of server energy efficiency Drawing on new research supported by EDNA, the session will present detailed findings on the energy efficiency of servers over the past decade. It includes comparative assessments of general purpose servers, accelerated computing chips, and application-specific integrated circuits, revealing compound annual growth rates in efficiency of 26 percent, 49 percent, and 47 percent respectively. The analysis also highlights the methodological complexities of evaluating server efficiency, including diverse hardware and workload types, lack of standardised assumptions, and shifting technology boundaries.