Finland''s ''sand battery'' listed among Time Magazine''s best
US periodical Time Magazine has included a Finnish company''s "sand battery" on its list of 300 of the most impactful inventions of 2025. The sand battery was included in the
From backyard brainstorms to international headlines, Finland's sand battery movement is proving that sometimes the simplest materials can offer the smartest solutions. Finland's sand battery stores renewable energy as heat using crushed soapstone, helping one town slash emissions and eliminate oil from its heating system.
Contrary to popular belief, Finland's solar energy potential doesn't fall short of that of Central Europe. In the summer, the long days and nearly round-the-clock sunlight compensate for the dark winters. This article's Finnish version was first published in February 2019 and has been updated in June 2023.
In Finland, solar electricity has so far been a financially competitive alternative only if the self-consumption rate has been high. Now, however, the situation is changing, as solar farms are being built to produce electricity to sell directly to the main grid.
The Finnish Energy Authority states that in 2022, solar power production amounted to nearly 635 megawatts – more than a 240 megawatt increase compared to the previous year. Finland still produces fairly little solar electricity compared to leading European countries. The Netherlands, in contrast, produce over seven times more per capita.
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