Since 2020 Prof. Dr. Klaus-Dieter Borchardt is a Senior Energy Advisor at the European & Competition Law Practice in the Baker McKenzie Brussels office. Before, Klaus-Dieter worked for 33 years at the European Commission, including four years at the European Court of Justice. During his 33 years at the European Commission, Klaus-Dieter Borchardt was instrumental in many major developments in EU Law and EU Energy Law and Policy. He spent inter alia 12 years in the Commissions' Legal Service where he was responsible for state aid, internal market and agriculture and 9 years in the Commissions Directorate for Energy. He was the central EU official in the reform of the European electricity market design as part of the 'Clean Energy for all Europeans' package. When he left the European Commission, he was Deputy Director-General for Energy responsible for the coordination of all three energy directorates (Policy Development, Internal Energy Markets, Renewable Energy and Energy Efficiency) as well as for the energy dialogues with third countries. Klaus-Dieter Borchardt is a Teaching Professor at the University in Würzburg, Germany (since 2001), Senior Research Fellow at the Oxford Institut for Energy Studies (since 2022) and Professor at the Copenhagen Business School (since 2023).