The world's largest sand battery has begun operation in Pornainen, Finland, storing 100 MWh of thermal energy from renewable sources. This innovation aims to eliminate oil from the district heating network, reducing emissions by nearly 70%. The project, led by Polar Night Energy, is a significant step toward achieving climate neutrality by 2035. The sand battery can store heat for extended periods and is expected to cut carbon emissions by 160 tonnes annually. The technology is scalable and aims for global expansion. Teljes cikk (Euronews.com)