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.
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.
Chief Financial Officer
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.
Chief Operating Officer
General Counsel
Dr. Dino Duderstadt joined Aquila Group in 2017 and, in leading legal roles, built up the company’s international legal departments. With more than 18 years of professional experience, he is responsible for all legal matters as General Counsel of Aquila Group. Since 2025, he has also been steering the company’s operations as Chief Operating Officer. Prior to joining Aquila Group, Dino worked in infrastructure project teams at Taylor Wessing and KPMG Law, where he served as Senior Manager.
Head Corporate Development & Strategy
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.
hscale is a pan-European data centre platform delivering sustainable and AI-ready infrastructure. It is a joint venture between Bain Capital and Aquila Group. In 2025, AQ Compute became part of hscale, marking a key step in hscale’s strategic expansion and brand evolution. With facilities across Europe, hscale serves hyperscalers and cloud services with high-performance, flexible infrastructure. Its designs feature ultra-high-density cooling, liquid cooling and heat reuse to support clients’ ESG goals.
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.
