Dennis Hesseling

Mr. Dennis Hesseling took up duties as Head of the Gas, Coal and Power Markets Division in July 2023.
From December 2012 to June 2023, Mr. Hesseling was Head of the Infrastructure, Gas & Retail
Department at the EU Agency for the Co-operation of Energy Regulators (ACER) where he responsible for the Agency’s activities in the areas of energy infrastructure, gas markets, and energy
retail, and was also the Agency’s representative to the Energy Community Regulatory Board.
Before joining ACER, Mr. Hesseling worked as Head of Unit in the Competition Department of Netherland Competition Authority NMa (ACM) where he had responsibility for merger control antitrust enforcement in the Dutch energy, telecommunications and media sectors. Prior to that, worked in the NMa’s Energy Regulation department from 2002 onwards working mainly on gas issues.
From 2000 he worked as a management consultant for McKinsey & Company in Brussels providing
strategic and operational advice to postal companies and banks.
Mr. Hesseling holds a PhD in Mathematics from Utrecht University, The Netherlands. He received
additional training at McKinsey, business school IMD in Lausanne and the Dutch Programme Prospective Top Civil Servants. Mr. Hesseling trained energy regulators and competition authorities Romania, Bulgaria, Ukraine, Turkey and Vietnam as well as political parties in various African countries.