Polar Night Energy's innovative technology has been listed among Time Magazine's best inventions of 2025, specifically in the green energy category.
The sand battery, developed by Polar Night Energy, aims to reduce emissions and costs by storing high-temperature thermal energy collected from solar and wind-generated heat sources.
The firm's 'biggest sand battery in the world' is located in Southern Finland's municipality of Pornainen.
This technology can be used in various applications, including heating buildings, making it a significant breakthrough in the field of renewable energy.
Author's summary: Finland's sand battery invention recognized globally.