Denmark Fuels Green Innovation with Next-Gen Molten Salt Battery
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On June 11, 2025, Glass Almanac reported a groundbreaking advancement in renewable energy from Denmark. The innovative molten salt battery, developed by Hyme Energy in collaboration with Sulzer, marks a significant leap forward in thermal energy storage technology. This state-of-the-art system can provide electricity to as many as 100,000 homes for a duration of 10 hours, achieving an impressive efficiency rate of up to 90 percent.
The molten salt battery distinguishes itself from conventional lithium-ion batteries by storing energy in the form of heat. It converts electricity into thermal energy, which is retained in molten salt heated to 600°C. When electricity is required, the stored heat can be utilized to generate steam for power production or can directly fuel industrial processes. This innovative approach offers a more sustainable solution for industries that heavily depend on heat, such as agriculture, textiles, and chemical manufacturing, contributing to a significant reduction in carbon emissions.
The molten salt system showcases remarkable efficiency levels: it achieves 90 percent efficiency for direct industrial heat, between 80 to 90 percent for combined heat and power, and around 40 percent when producing electricity alone. Its primary strength lies in applications that require heat, making it particularly suitable for energy-intensive industrial activities. For instance, Danish dairy giant Arla Foods anticipates annual savings of up to 3 million euros by implementing this technology.
Hyme Energy successfully demonstrated its technology with the MOSS prototype in Esbjerg in April 2024, confirming its technical viability and compatibility with existing infrastructure. The company is now focused on scaling up operations by constructing the world’s largest industrial thermal storage facility in Holstebro, Denmark. Sulzer’s expertise in managing high-temperature molten salt, acquired through solar thermal projects, was vital in addressing challenges such as corrosion and heat loss.
Environmentally, the molten salt battery is notable for using recyclable, non-toxic materials, steering clear of the hazardous chemicals often present in traditional batteries. Its capacity to store surplus renewable electricity from wind and solar sources is crucial for stabilizing the energy grid and facilitating the transition to low-carbon energy solutions.
Hyme Energy’s molten salt technology has the potential to play an essential role in Europe’s green energy transition, effectively providing both electricity and industrial heat. If it proves successful, this technology could be adopted globally, enhancing energy security and promoting a worldwide shift toward sustainable energy practices.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/denmark-pioneers-next-gen-molten-salt-battery-for-renewable-energy-revolution/
