Prof. Paul Hellier is professor of sustainable energy engineering in the mechanical engineering department at University College London. He specialises in energy systems and low-carbon technologies, focusing on innovations that support the transition to sustainable energy. Hellier’s research explores energy efficiency, renewable integration, and smart grid solutions. He collaborates with industry and academic partners to develop practical engineering approaches that address climate challenges. Through teaching and leadership at UCL, Hellier contributes to training the next generation of engineers equipped to tackle global energy and sustainability issues.