Robert Zajdler holds a PhD in Law and is a Legal Advisor. He runs his own energy law practice (Zajdler Energy Lawyers, www.zajdler.eu), is an energy expert at the Sobieski Institute think tank, and lectures at the Warsaw University of Technology. Previously, Zajdler worked for one of the biggest law firms in Poland. While working in public administration, he was a co-counsel of the Republic of Poland in arbitration proceedings based on the Energy Charter Treaty (Mercuria Energy vs. Republic of Poland). He was involved in Polish accession negotiations with the European Union, and the approximation of Polish law in energy, competition, and free movement of goods with the acquis. He has also worked for the European Commission, is the author of a considerable number of publications in the field of energy, and has been invited as an influential speaker to a number of conferences.