At Sustainable Reality 2025, the session Energy States explores how best practices, smart infrastructure, and innovative energy management can transform the way we think about computing. With increasing demand from HPC and AI, efficiency is no longer optional. It is essential for sustainability, cost control, and future growth.
This session brings together three speakers tackling energy challenges from different angles: practical deployment, carbon transparency, and heat reuse.
Wil Mayers, Alces Flight
“Practical Approaches to Energy-Efficient Supercomputing”
In a world of GPUs, cooling debates, and ever-changing workloads, how do you make sustainable infrastructure decisions without breaking the bank? Wil will review the state of the art in compute equipment, power strategies, and cooling solutions. Using examples from UK and European deployments, he will show how teams can plan upgrades that balance efficiency, cost, and performance, keeping users in FLOPs while building for the future.
Stu Franks, ConcertIM
“Decoding Carbon: Energy Reporting in Supercomputing”
Sustainability starts with understanding impact. But in HPC and AI, performance often overshadows efficiency. Stu will outline a “building-blocks” approach to modelling HPC and AI facilities that makes carbon use measurable and meaningful. By breaking down systems into their component parts, this model can estimate footprint, highlight inefficiencies, and point toward practical improvements. His talk makes the case that transparency is the first step toward real change.
Mark Bjornsgaard, Deep Green
“Lessons from the Edge: What We’ve Learnt When Scaling Data Centre Heat Reuse”
Deep Green is pioneering distributed edge computing with a bold proposition: free heat. By integrating data centre capacity into urban environments, they are harnessing heat reuse in order to reduce waste. Mark will share lessons from the efforts done so far in scaling and make the case that embedding computing into the fabric of our cities is not just common sense—it is essential for the sustainable future of digital infrastructure.
Energy States is about making energy visible, actionable, and valuable. From smarter equipment to carbon accountability to heat reuse, the session will explore how innovation and best practice are reshaping the footprint of supercomputing.
Join us to discover how energy choices today will define the sustainability of computing tomorrow. Registration is free but space is limited!