People's Work

About us

EqoLibrium was founded on the belief that complex societal transitions benefit from sharp, independent and realistic analysis. We combine the strategic brainpower of a qualitative energy-economic consulting firm with the precision of a quantitative research institute.

Our strength is not only in working together, but also in what we bring in terms of content.

We work on economic and social issues and help initiate changes that make a real difference. Our expertise is in line with what is currently going on in society.

Our research is people work.

Behind every analysis or scenario are committed professionals: people with substantive knowledge, a well-thought-out approach and an understanding of how decision-making works in practice.

Board

Hans van Cleef

Hans van Cleef works as a director and researcher at EqoLibrium. He is co-founder and managing director of EqoLibrium, where he helps organizations make better decisions through qualitative analysis. Hans specializes in the energy market in the broadest possible sense (oil, gas, wind and solar energy, CO2 emissions). Hans has a background as head of energy research at Publieke Zaken ERS, team leader at AAGUS FSG, treasury advisor, currency and commodities analyst, and senior energy economist (VP) at ABN AMRO, with a strong focus on research and economics.

Gregor Brandt

Gregor Brandt serves as a director at EqoLibrium. Gregor is also an associate at QuoMare with a focus on day-to-day operations. Gregor specializes in applying mathematical models and data analysis to optimize business processes, especially within the supply chain and logistics sector. He completed the master's degree in Engineering Mathematics at Eindhoven University of Technology. During his studies, Gregor specialized in optimization models for logistics networks.

Advisory Board

Gert-Jan Segers

Chairman of the Advisory Board.

T.B.A.

Being filled in at the moment.

T.B.A.

Being filled in at the moment.

Team EqoLibrium

Rutger de Mare

Rutger de Mare works as a researcher at EqoLibrium. He is co-founder of EqoLibrium and managing director of Quo Mare, where he helps organizations make better decisions through mathematical modeling. Rutger specializes in data-driven decision making and mathematical optimization within complex business environments. He holds a master's degree in Econometrics and Operations Research from Erasmus University.

Bart van der Pas

Bart van der Pas works as an economic consultant at EqoLibrium. Bart specializes in emissions trading. He completed the bachelor Economics and Policy and the master Environmental Economics, both at Wageningen University. During his master he investigated the technical possibilities and financial feasibility of local CO2 offsets and completed his thesis by modeling the price of European emission rights.

Marian Horlings-Bijl

Marian Horlings-Bijl works as an Optimization Consultant at EqoLibrium. Marian specializes in modeling different types of energy systems. She completed the bachelor's degree in Econometrics and Operations Research and the master's degree in Operations Research and Quantitative Logistics, both at Erasmus University. During her studies, Marian modeled future global hydrogen flows.

Fabian Steenbergen

Fabian Steenbergen works as an energy market analyst at EqoLibrium. He completed the Bachelor's degree in Economics and Policy and the Master's degree in Economics of Sustainability at Wageningen University. During his master he studied, among other things, the operation of global commodity markets. In his thesis, he constructed a supply-demand model of the global soybean market. During his internship, Fabian found out that his real passion lies in energy markets, which he now deals with on a daily basis at EqoLibrium.

Jesper Schreurs

Jesper Schreurs is working as a Data Analyst at EqoLibrium. He completed his bachelor's degree in Industrial Engineering at the University of Groningen and is now working on his master's degree in Econometrics and Management Science at Erasmus University Rotterdam. Besides work, Jesper is studying energy markets for his thesis, looking at how different market configurations affect the Dutch energy system.

Marije Willigenburg

Marije Willigenburg works as an analyst at EqoLibrium. Marije specializes in research on cross-border social issues at the intersection of human rights, international politics and economics. She completed the bachelor's degree in Liberal Arts and Sciences: Global Challenges at Leiden University College The Hague, with a major in International Justice. She then went on to earn a master's degree in Global Crime, Justice and Security from the University of Edinburgh. During her studies she investigated, among other things, how geopolitical interests influence the legal conclusion of international trade treaties, such as the UN Arms Trade Treaty.

Jim van der Valk Bouman

Jim van der Valk Bouman works as a modeler at EqoLibrium. Jim has since been working on modeling calculations around the Dutch energy transition. He completed the Master's degree in (abstract) Mathematics at Leiden University and the Master's degree in Applied Mathematics at TU Delft. During the second master, Jim specialized in mathematical optimization.

Guusje Schreurs

Guusje Schreurs works as an energy market analyst at EqoLibrium. She specializes in international trade and macro economics. Guusje holds the International Bachelor Economics and Business Economics and the Master International Economics at Erasmus University. During her studies, she examined how trade flows are affected by import tariffs during the China-US trade war.

Vacancies

Start date: September 2025

We look forward to hearing from you

Want to know more?

Contact Hans van Cleef to see what EqoLibrium can do for you.