Our executive management

Ecofys is a key player in sustainable energy solutions and climate change issues. Forming a powerful team with Navigant, Ecofys is part of the leading global energy consultancy. Profound knowledge, innovation and dedication are what drive our daily work. These ambitions and skills are reflected in our Executive Management team.

Management Team

Thijs Aarten

Management Team

Thijs Aarten is interim Managing Director at Ecofys. He has over 33 years of energy industry experience, having worked i...

Kornelis Blok

Management Team

Kornelis Blok(1956) has a background in physics and received a Ph.D. degree from Utrecht University for his thesis ‘On t...

Kees van der Leun

Management Team

Kees van der Leun (1960) graduated from Utrecht University with an MSc in Physics in 1986. He joined Ecofys as its third...

Carsten Petersdorff

Management Team

Dipl.-Phys. Carsten Petersdorff (1970) is Director at Ecofys. In his function he assists corporate clients, associations...

Joris de Groot

Management Team

Joris de Groot is Managing Director at Ecofys. Before joining Ecofys in 2014, he gathered broad management consulting ex...

Daniel Becker

Management Team

Daniel Becker is Managing Partner at Ecofys. He is an expert on international market conditions and support schemes for ...

Katja Eisbrenner

Management Team

Katja Eisbrenner is Director at Ecofys. She has ten years of international experience in project management and consulta...

Michiel Müller

Management Team

Michiel Müller (1963) is Managing Direcotr at Ecofys and Ecofys Wind Turbine Testing Services (WTTS) and has been workin...

Anja de Jong

Management Team

Anja de Jong is Finance Director and responsible for Finance, ICT and legal. She joined Ecofys in September 2013. Anja h...

Izaak van der Neut

Management Team

Izaäk van der Neut is HR manager for Ecofys. He joined Ecofys in 2011 and is responsible for our human capital strategy,...