At SMM Legal, Mr Tarka co-manages the Energy Law Department. He mostly deals with issues related to RES. An advisor in legislative procedures to major companies in the energy and fuel sectors. He was listed in the international rank The Legal 500 EMEA 2021.

He has worked with leading Polish law firms for many years. He represented Polish and international clients in interdisciplinary investment procedures, supervising and coordinating large project teams in Poland and abroad.

Mr Tarka is an author of analyses on RES development strategy in power engineering and transport for the Minister of Climate and Environment and the Minister of Energy. A former chief RES advisor to the Ministry of Entrepreneurship and Technology and the Ministry of Development.

He participated in Polish and foreign research conferences on renewable energy. A co-author of the commentary on the RES Act for C.H. Beck and an author of over 100 publications in Polish and foreign press.