Molten Salt

Driving the green transition with high-temperature salt storage.

Today, around 80% of the world’s energy needs are still met by oil, natural gas, and coal, despite increasing investments in green energy. One of the main challenges facing green energy is the lack of effective storage solutions.

Molten Salt Energy Storage (MOSS) in Esbjerg, Denmark, is the world’s first facility to store green electricity in molten hydroxide salt at temperatures up to 700 degrees Celsius. This facility plays a key role in the global energy transition by providing an efficient, compact method for storing wind and solar energy.

By enabling industries and utilities to replace fossil fuels with green electricity for heating and steam production, MOSS significantly reduces global energy consumption and CO2 emissions.

Through transforming green electricity into a storable, high-temperature form, MOSS not only advances energy storage technology but also strengthens the sustainability and resilience of our energy grid. This positions MOSS as a pivotal player in the shift to cleaner energy solutions.

The Jury says

Molten Salt exemplifies the imagination and courage it took to recognize the potential in a nascent technology and see its strategic application in sustainable energy.

Despite challenges – technical complexity, market bias toward established systems, and cost pressures – the team used a collaborative design approach to address diverse use cases and craft solutions for a complex landscape.

This journey transformed raw technology into a powerful, scalable solution, engaging stakeholders and investors through a clear narrative. Purpose-driven and creatively navigated, this design solution highlights a model for scalable impact in sustainable transitions, balancing high-level strategy with practical, detailed execution.