German energy storage company LUMENION has successfully completed the test operation of a new thermal energy storage (TES) system, which provides carbon-free steam and process heat for industrial applications. The system, located in Schleswig-Holstein, marks a significant step towards decarbonising industrial processes and is now available for large-scale deployment.
The TÜV-certified “green steam” technology combines a high-temperature thermal storage system with flexible electricity charging, enabling industries to transition away from fossil fuel-based heating while reducing costs.
Harnessing Renewable Energy for Process Heat
LUMENION’s system operates by charging energy from renewable electricity sources and storing it as heat at temperatures of up to 600°C. This energy is then released as steam or process heat over extended periods, allowing industrial users to reduce reliance on fossil fuels and stabilise energy costs.
By charging flexibly during periods of low electricity prices or high renewable generation, companies can use cheaper electricity, particularly from their own renewable energy sources. The system is highly scalable and has been successfully tested at a major food production facility, demonstrating its potential for widespread industrial adoption.
CEO of LUMENION, Peter Kordt, described the successful deployment as a milestone for both the company and the wider industry.
“The flawless implementation of our CO2-free steam solution for a leading food producer is an impressive proof of the potential of this technology.”
Decoupling Industry from Fossil Fuel Costs
The thermal storage facility in Schleswig-Holstein has a capacity of 20 MWh, making it one of the largest of its kind. Its modular design enables easy scalability to meet the energy needs of industries that rely on process heat up to 450°C.
Jobst Hoyningen-Huene, CEO and co-founder of econnext AG, highlighted the system’s potential for reducing energy price volatility in the industrial sector.
“This solution provides a practical, immediately available way to decarbonise industrial steam production at scale and at high speed. It also allows clients to shield themselves from fluctuating fossil fuel costs and rising CO2 pricing.”
The large-scale storage capacity ensures that companies can secure long-term stable energy costs, making the solution both economically viable and environmentally sustainable.
Scaling Up for Industrial Applications
LUMENION’s technology is now available for all industrial sectors that require steam or high-temperature process heat, including food production, chemicals, and manufacturing. The company is also developing “Heat-as-a-Service” contracts, allowing businesses to access decarbonised heat solutions without large upfront investments.
With the successful pilot installation now in operation, LUMENION sees enormous market potential for broad industrial adoption, further supporting the global energy transition.