heat storage

Finnish startup scales sand battery technology to the next level

By Lisa McDonald / March 15, 2024

Finnish startup Polar Night Energy, which developed and installed its first commercial-scale “sand battery” energy storage system in 2022, is now collaborating with Finnish district heating company Loviisan Lämpö to build an industrial-scale sand battery system in Pornainen, Finland.

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Video: ‘Sand battery’ keeps Finnish town warm during the dark, cold winters

By Lisa McDonald / July 6, 2022

Adapting to climate change not only requires updating our existing energy systems but also designing new ways of storing and transmitting energy that can better withstand extreme environments. Finnish startup Polar Night Energy just completed the first commercial installation of their new heat storage system, which stores thermal energy using sand.

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New phase-change ceramic stores energy and releases it under pressure

By April Gocha / July 28, 2015

Scientists at the University of Tokyo have discovered a unique ceramic that can store heat long-term and release it on-demand, opening up new possibilities for a variety of energy storage systems.

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