Professor Dr. Antonis Metaxas is the Managing Partner of M&A Law Firm and Chairman of the Hellenic Energy Regulation Institute. He teaches EU, EU State Aid and Energy Law at National and Kapodistrian University of Athens and TU Berlin. He is also visiting Professor in various distinguished universities in Greece and abroad. He is regarded as most prominent professional and academic in his field by all independent international Legal Directories (Legal 500, Chambers). He acts as legal advisor to a number of governments, regulatory authorities as well as major private and institutional clients.