Aquila Group is a private enterprise managing a diverse portfolio of businesses focused on innovative solutions across various sectors. Since 2001, Aquila Group has been driving innovation in clean energy and sustainable infrastructure, creating long-term value as both an investor and developer for a more sustainable future.
With around 700 employees across 20 offices globally, Aquila Group is committed to avoiding 1.5 billion tonnes of CO2 equivalents across its portfolio’s lifetime by 2035.
Chief Executive Officer
Co-Founder Aquila Group
Roman Rosslenbroich is co-founder and Chief Executive Officer (CEO) of Aquila Group. He is responsible for Aquila Group’s corporate development, strategy and investments. Prior to founding Aquila Group in 2001, he was Head of the fixed income rates division at Salomon Brothers in Frankfurt. Roman graduated in business administration from the Goethe University in Frankfurt.
Chief Investment Officer
Co-Founder Aquila Group
Dr. Dieter Rentsch is co-founder and Chief Investment Officer (CIO) of Aquila Group. He is responsible for the company’s investment strategies, investment processes, key account management, finance, IT as well as risk management. Previously, he was Head of macro research at Munich Re Insurance Group (MEAG). Dieter has over 30 years of experience in the investment sector and holds a PhD in nuclear physics from the Justus-Liebig-University of Gießen.
Executive Advisor to Aquila Group
Michaela Maria Eder von Grafenstein has more than 30 years of local and international experience in alternative assets, credit management, risk management, product development and corporate governance. Prior to joining Aquila Group in 2013, Michaela held numerous top management positions at Allianz, Dresdner Bank and the Deutsche Bank Group. She holds a degree in law from the Ludwig Maximilians University of Munich.
Chief Financial Officer Aquila Group
Christian Ohl heads up Aquila Group’s finance function. Prior to joining Aquila Group in 2012, Christian was the Head of group controlling at a healthcare company. In 2002, he started his career in the audit and corporate restructuring divisions of Arthur Andersen (later Ernst & Young) where he was responsible for the restructuring of national and international photovoltaic, shipping and timber companies. Christian holds a degree in commercial law and is a former certified auditor and syndicus tax advisor.
Chair, Aquila Clean Energy EMEA
As Chair, Susanne is responsible for leading the shareholder committee of Aquila Clean Energy EMEA and mainly focused on strategic matters. She also ensures high governance standards within the company and amongst its board. Susanne has led and built the company as CEO from 2013 to 2024.
Group Head Corporate Development & Strategy, Aquila Group
Max Dreiner is responsible for Corporate Development & Strategy of Aquila Group and its businesses. Prior to joining Aquila Group in 2017, Max worked in the investment and financial service industry for companies such as EY and KPMG. He holds a master’s degree in investments and finance from the Queen Mary University of London, where he graduated with distinction.
Aquila Capital is an asset manager specialising in sustainable real asset investments. Since 2007, we have been providing compelling investment opportunities focused on driving the energy transition and sustainable infrastructure. Our goal is to deliver resilient returns while supporting clean energy initiatives and contributing to the decarbonisation of global infrastructure.
Aquila Clean Energy is a leading European clean energy business. As a developer of integrated & hybrid clean energy solutions and independent power producer, we are driving the European energy transition. We aim to deliver innovative clean energy solutions to corporate customers.
Aquila Clean Energy Asia Pacific is a clean energy platform that funds, develops, builds and operates solar PV, wind power and battery storage assets across the region. Through developing and managing clean energy assets, we are committed to advancing the energy transition towards a more sustainable future. Poised to capitalise on the region’s vast demand for clean energy solutions, our vision is to build one of the leading clean energy platforms in Asia Pacific.
AQ Compute provides data centre and colocation services with a strategic focus on sustainability. The company specialises in developing flexible and modular colocation data centres strategically located in prime metropolitan areas, designed to accommodate the highest densities. Our data centres are AI-ready, catering to a wide range of compute, storage and GPU applications.
Green Logistics by Aquila Group is the company’s logistics business line. Aquila Group has extensive experience in the logistics sector, with projects in several European countries since 2012. Green Logistics currently develops and manages assets in Spain, Portugal, Italy, and Germany. All Green Logistics projects are developed under the standards of energy efficiency and sustainability in the supply chain, thus contributing to the reduction of CO2 emissions.
AQ Acentor, Aquila Group’s partner in sustainable real estate development, oversees construction in Spanish residential real estate. With a strong industry network and a dedicated local team, the company manages these assets efficiently and offers institutional investors access to a premium portfolio.
