The People Behind Sůlmate
Combining decades of marine industry experience, international business development and strategic partnerships to bring next-generation energy storage to the European market.
Bjoern Guenther
COO | Co-Founder | Marine Industry Specialist
Björn brings decades of experience from the international marine industry, combining technical expertise with a deep understanding of the real-world challenges faced by boat owners and marine professionals.
Having lived and worked in both Europe and the United States, including several years in Florida, Björn developed an international perspective on the marine market. As a yacht owner himself, he understands first-hand the importance of reliable onboard energy systems, safety at sea and equipment that performs when it matters most.
Throughout his career, Björn has worked closely with boat builders, marinas, shipyards, distributors and marine service companies across Europe. His experience spans technical sales, business development and customer support, supported by a strong professional network within the marine industry.
At Sůlmate, Björn focuses on strategic partnerships, dealer and installer support, and the introduction of Sodium-Ion technology to the marine and recreational sectors — connecting innovative energy storage technology with the practical needs of customers on the water.
“The best technology is the technology you can trust when you are far from shore.”
Maxime Donon
Advisor| Innovation & Business Development
Maxime is an entrepreneur with a strong interest in innovation, sustainable technologies and the development of future-oriented energy solutions.
Growing up in an entrepreneurial and creative environment, he developed an early interest in projects that combine technological innovation, economic opportunity and environmental responsibility.
Inspired by the potential of Sodium-Ion technology, Maxime joined Sůlmate to support the development of more sustainable energy storage solutions and help translate emerging technology into practical market opportunities.
At Sůlmate, he contributes to business development, strategic thinking and the creation of partnerships that support the company’s growth and the adoption of next-generation energy storage technology.
“The energy transition is not only a technological challenge – it is an opportunity to build a better future.”
Romaine Yvrard
CEO |Co-Founder | Strategic Partnerships & Market Development
Romain brings more than 20 years of experience in international business development, market expansion and strategic partnerships across Europe.
Throughout his career, he has worked with entrepreneurs, executives, distributors, dealers and OEM partners, helping companies enter new markets and build the relationships required to turn promising ideas into successful businesses.
His experience in the marine industry includes relationships with boat builders, shipyards, naval architects, refit specialists and marine distributors. It has shaped his belief that introducing new technology requires more than innovation alone — it requires trust, education and long-term partnerships.
At Sůlmate, Romain focuses on strategic partnerships, market development and building an international partner network for Sodium-Ion technology across the marine, RV and off-grid sectors.
“Innovation is never just about technology. It is about helping people see what comes next.”
Sůlmate Energy
Next-Generation Sodium-Ion Energy Storage
Safe.
Sustainable.
Reliable.
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12V 100Ah
12V 160Ah
12V 210Ah
24V 200Ah
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Sůlmate Energy Systems s.r.o.
Kurzova 2222/16
155 00 Prague 5
Czech Republic
IČO: 29839572
Managing Director:
- Romain Yvrard
