The partnership builds on the successful cooperation between the two companies in the Molten Salts Storage (MOSS) consortium. Since 2022, Sulzer and Hyme Energy have worked together under the MOSS project, funded by the Danish Energy Technology Development and Demonstration Program (EUDP), which led to the world’s first molten hydroxide energy storage plant, inaugurated in April 2024 in Esbjerg, Denmark. Sulzer played an important role by supplying critical pump technology that enables the controlled movement of molten salt within the system, essential for energy storage and discharge in the form of steam for industrial heat processes.

Recognising the potential of this technology for the decarbonisation of industries, Sulzer and Hyme Energy continue working on the further development of equipment qualification, system integration, and the establishment of supply chains that will drive the widespread adoption of molten salt thermal energy storage.

By combining Sulzer’s expertise in fluid engineering and precision manufacturing with Hyme Energy’s patented innovation in molten hydroxide salt technology, the partnership aims to accelerate the transition towards sustainable industrial heat solutions. This initiative supports the decarbonisation of steam production in manufacturing industries that rely heavily on high-temperature heat and account for a significant share of global carbon emissions.

Benoît Martin, Advance Engineering Manager at Sulzer explains the next steps: “With the MOSS plant providing good results since its inauguration in April 2024, we’re now working with Hyme Energy to further optimize the system, improve the competitiveness of the solution and establish a strong supply chain. Sulzer’s vertical turbine pumps are crucial for moving molten salt around the system, so we are also focusing on achieving material and technical advancements to extend service life, boost performance and add value.”

“Our technology is designed to integrate with existing infrastructure, making adoption easier for industries looking to transition to sustainable energy. For us at Hyme, it is key to work with established partners like Sulzer. By combining our strengths, we can accelerate progress and bring this solution to market faster,” says Ask Emil Løvschall-Jensen, CEO and co-founder of Hyme Energy.

As the world seeks robust and scalable solutions for industrial decarbonisation, this collaboration between Sulzer and Hyme Energy represents an important leap forward in the energy transition for industries.