#sandbatteries — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #sandbatteries, aggregated by home.social.
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So, I learned a lot this #SolarPunkSunday! #BokashiComposting , #LacticAcidBacteria uses, new breakthroughs with #Sandbatteries, #Piezoelectrics, and #Renewables! And all the sharing of tips and tricks and events! I hope folks join us next weekend! Share your #RepairCafes, #ToolLibraries, #CommunityBuilding, #Gardening pics, #SolarPunk stories and art, etc., etc. Together we can BUILD a better future!
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The next big #EnergyStorage device could be a 1000 °C #SandBattery
With high specific heat, low thermal conductivity, and no risk of fire, sand-based energy storage systems are gaining traction in grid-scale and industrial heating applications.
by Georgina Jedikovska, Jul 17, 2025
Excerpt: "While at first glance, sand might not seem like the most high-tech solution for energy storage, its ability to capture and retain heat has been harnessed for millennia.
"Sand might not seem high-tech, but its thermal properties have been used since antiquity. #AncientEgyptians mixed sand, silt, and straw to construct homes that absorbed solar heat by day and slowly released it by night.
"Today’s engineers are taking that principle further using refined materials, insulated steel silos, and precision heating systems to build high-temperature thermal energy reservoirs using sand."
Read more:
https://interestingengineering.com/energy/sand-batteries-clean-energy-storageArchived version:
https://archive.ph/KW2T0#SolarPunkSunday #SandBatteries #RenewableEnergy #AncientTechnology
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How 2,000 Tons Of #Sand Stores 100 Megawatt-Hours And Slashes Carbon Emissions 70%
By John Koetsier, Apr 14, 2026,
"#PolarNight is doubling its size with a new 250 megawatt-hour facility in Vaaksy, #Finland, which will output 2 megawatts of energy consistently. That newer and bigger battery will use only slightly more sand – 2,400 tons – because the #SandBattery’s design renders it more efficient with size. What will become the new world’s largest sand battery is already under construction and is scheduled for completion in summer 2027."
Archived version:
https://archive.ph/NklmC -
"How Finland’s giant sand battery is storing clean energy (and cutting emissions by 70 percent)"
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@grzgrz #Geothermal! #Piezoelectric tiles (for cities)! #Flywheels! Also storage solutions like #SandBatteries and #IceBatteries! However, I'm not sure if nuclear fusion fits (have they perfected that yet? What about the waste?).
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World's first 'sand battery' can store heat at 500C for months at a time. Could it work in Australia?
By technology reporter James Purtill
Mon 18 Jul 2022"The idea of storing heat in sand to warm homes through winter may, on the face of it, seem too simple to work.
Key points:
- The world's first commercial "sand battery" stores heat at 500 degrees Celsius for months at a time
- It can be used to heat homes and offices and provide high-temperature heat for industrial processes
- Thermal storage could displace gas in industry and remove up to 16 per cent of Australia's emissions, experts say"Drop a load of cheap builder's sand in an insulated silo, heat the sand with renewable electricity, and then tap the stored thermal energy for months on end.
"In an age of green hydrogen, lithium-ion batteries and other high-tech energy solutions, it can't work, right?
"Finland begs to differ. This month saw the Nordic nation launch the world's first commercial 'sand battery'.
"About 230 kilometres north-west of Helsinki, in the town of Kankaanpää, homes, offices and the public swimming pool are being heated by thermal energy stored in a 7-metre steel container filled with 100 tonnes of sand.
"So how does it work, what else can it be used for, and should we build them in Australia?"
