A sand battery in Finland is transforming sustainable heating Ifeadi C. 03:30 Mashable, Zero Tech Blog A city in Finland is using a sand battery to store excess electricity for district heating. via Zero Tech Blog Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsSomeone calculated how much time Neymar has spent on the ground during the 2018 World Cup and it's a lotWhy superhero movies need to be more like 'Ant-Man'Beware of 'Fortnite' ScamsLittle French boy waves baguette at World Cup, help help, I'm dyingGalaxy S9 sales may be low, but don't worry, Samsung isn't doomedProtect your home with a security camera and sensor pack for $99