Ohmium International, a leading innovator in PEM hydrogen electrolysers, has appointed renewable energy veteran Markus Tacke as its new Chief Executive Officer, effective July 1, 2025. Tacke, who succeeds co-founder Arne Ballantine, brings over two decades of leadership experience from Siemens and deep expertise in global clean energy markets. The strategic leadership change comes at a pivotal time as Ohmium intensifies its international expansion, scales manufacturing capacity, and accelerates commercial deployments. With a green hydrogen project pipeline exceeding 2 GW across three continents, the company is positioning itself as a key player in the decarbonization of hard-to-abate sectors worldwide.
Leadership Transition at a Defining Moment
Ohmium International announced on Wednesday that Markus Tacke will assume the role of Chief Executive Officer, effective July 1, 2025, succeeding Arne Ballantine, the company’s co-founder and outgoing CEO. The leadership transition signals a strategic evolution as Ohmium pivots toward deeper global penetration and commercial scaling of its proprietary green hydrogen technologies.
The company, headquartered in the United States with manufacturing operations in India, is rapidly advancing its position in the clean energy sector, particularly in the development and deployment of Proton Exchange Membrane (PEM) electrolysers—a key technology in the production of green hydrogen.
Markus Tacke: A Proven Clean Energy Leader
With 22 years of executive experience at Siemens, Markus Tacke brings an impressive résumé to Ohmium. His track record includes leading renewable energy divisions and orchestrating complex international growth strategies. Known for navigating industrial transformation with technological innovation, Tacke is well-equipped to oversee Ohmium’s expansion and scale its impact across key energy markets.
Board Chairman Ahmad Chatila welcomed the appointment, stating:
“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.”
Outgoing CEO Arne Ballantine expressed his full support for the transition, adding that Tacke is the “right leader to guide us into the future.”
Accelerating Global Expansion and Commercialisation
Ohmium is poised to capitalize on surging global demand for clean, secure, and cost-effective hydrogen solutions, especially in sectors traditionally resistant to decarbonization, such as steel, cement, and transportation.
The company’s green hydrogen project pipeline exceeds 2 gigawatts (GW) and spans three continents, underscoring its growing influence and ability to meet a wide range of industrial energy needs. In recent years, Ohmium has made significant investments in both R&D and manufacturing infrastructure, aiming to deliver scalable solutions to an increasingly urgent global climate agenda.
The appointment of Tacke is expected to drive:
- Strategic market entry in Europe, Asia, and Latin America
- Expansion of manufacturing capacity in India and other potential hubs
- Strengthened commercial partnerships with industrial players and governments
Building Momentum in a Transforming Energy Landscape
As nations accelerate their energy transition agendas, green hydrogen has emerged as a critical pillar in achieving net-zero emissions. Ohmium’s PEM technology is designed to enable efficient, modular, and flexible hydrogen production, aligning with both distributed and utility-scale deployment models.
With Tacke at the helm, Ohmium is positioned to deepen its role in enabling energy security and industrial decarbonization through:
- Integration with renewable power sources such as wind and solar
- Support for energy storage and grid balancing
- Delivery of low-cost green hydrogen at scale
This leadership change comes at a moment when investment in hydrogen infrastructure is surging globally, and governments are offering significant incentives to accelerate adoption.
Conclusion: Ohmium Enters Its Next Growth Chapter
The appointment of Markus Tacke as CEO marks a new era for Ohmium International. Backed by robust technology, international operations, and a growing commercial footprint, the company is prepared to scale new heights in the global clean energy arena.
Tacke’s extensive experience in industrial leadership, combined with a bold vision for a decarbonized future, is expected to reinforce Ohmium’s mission to enable the large-scale, affordable production of green hydrogen—a critical enabler of the world’s transition toward sustainable energy.
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