Finland's Innovative 'Sand Battery' Recognized by Time Magazine
Polar Night Energy's groundbreaking technology has been listed among Time Magazine's best inventions of 2025, specifically in the green energy category.
The company claims that sand batteries can significantly reduce emissions and costs. The largest sand battery in the world, developed by Polar Night Energy, is located in Pornainen, Southern Finland.
In simple terms, a sand battery stores high-temperature thermal energy from solar and wind-generated heat sources, which can be used for various applications, including heating buildings.
Polar Night Energy says sand batteries can help cut emissions and reduce costs.
- The sand battery was included in Time Magazine's list of 300 most impactful inventions of 2025.
- The technology has been featured in a video report by Yle News' Matthew Schilke, shared on Instagram.
Author's summary: Finland's sand battery invention recognized globally.
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