Ohmium International, a manufacturer of advanced PEM hydrogen electrolyzers, announced the appointment of Markus Tacke as its new Chief Executive Officer (CEO), effective July 1, 2025.
Markus Tacke takes over from Arne Ballantine, who is also the co-founder of the company.
With over 22 years of experience at Siemens and a proven track record in the renewable energy sector, Dr. Tacke will drive Ohmium‘s global expansion and commercialization of its next-generation green hydrogen solutions.
Prior to this, Markus Tacke was CEO of Oerlikon Surface Solutions AG, where he achieved 8% annual growth and turned the company from break-even to 9% profitability through regional integration and new business exploration.
He has also led Siemens Gamesa Renewable Energy, where he streamlined product lines, launched advanced platforms, and initiated a €2.5 billion cost savings program, stabilizing the wind business and launching a high-impact growth strategy.
Ahmad Chatila, Board Chairman of Ohmium said, “Dr. Markus Tacke possesses a rare blend of operational excellence and technical expertise, along with a strong history of scaling businesses. His unique combination of skills will be pivotal as we expand globally and deepen our commercial partnerships. We are confident he will help us meet and exceed our ambitious goals.”
Arne Ballantine, the former CEO and co-founder of Ohmium International, said, “Leading Ohmium through its early stages has been an incredible privilege. I am immensely proud of our team and their achievements, including securing numerous patents and gaining industry recognition for our high-efficiency, rapidly scalable, and bankable PEM electrolyzer. I have full confidence that Dr. Tacke is the right leader to guide us into the future. I look forward to supporting the transition and seeing the company continue to grow.”
Markus Tacke said, “I am honored to join Ohmium International at such an exciting inflection point. Ohmium’s technology, team, and culture are extraordinary. I look forward to working alongside our employees, clients, investors, and partners to accelerate the transition to a greener future on a global scale.”
Tacke earned a Mechanical Engineering degree and a PhD from the Technical University of Darmstadt, Germany, and a master’s degree in engineering from Cornell University in New York, USA.
