Dennis Hesseling

Dennis Hesseling, a Dutch national, is the Head of the Gas and Coal Markets Division in the IEA’s Directorate of Energy Markets and Security. Prior to joining the IEA in 2023, he was the Head of the Infrastructure, Gas & Retail Department at the EU Agency for the Co-operation of Energy Regulators (ACER), where he directed its activities in the areas of energy infrastructure, gas markets and energy retail and represented the Agency at the Energy Community Regulatory Board.  He holds a PhD in Mathematics from Utrecht University, Netherlands; he also received additional training from McKinsey & Company, the IMD Business School in Lausanne, IESE Business School in Barcelona, as well as from the Dutch Programme for Prospective Top Civil Servants.