Batteries are the key to the future of the most abundant sources of renewable energy, solar and wind power for one obvious reason: intermittence. If power generators want to replace fossil fuels ...

The world’s first sand battery acts as a high-capacity reservoir for excess wind and solar energy. Energy is stored as heat, which can then be transferred for commercial use. Currently, the battery is ...

Last month, Finnish startup Polar Night Energy announced that it is building a giant sand battery capable of heating a town of 5,000 people for up to a month. That’s on a single charge. Polar Night is ...

When you think of energy solutions, you might not imagine 100 tonnes of builders’ sand piled inside a huge silo. But one company has actually found that sand can be the secret sauce to energy storage, ...

A company in Finland has created an an unusual storage solution for renewable energy: One that uses sand instead of lithium ion or other battery technologies. Polar Night Energy and Vatajankoski, an ...

Finland has inaugurated an industrial-scale sand battery this week in the southern town of Pornainen, where it'll take over heating duties from an old woodchip power plant for the municipality. It's ...

Engineers in Finland may have discovered a cheap and effective way to get the most out of their country's wind and solar power systems. Polar Night Energy claims to have constructed "the first ...

Finnish startup Polar Night Energy and Loviisan Lämpö, a district heating company in Finland, plan to construct an industrial-scale thermal energy sand-based storage system in the municipality of ...

An innovative thermal energy storage system has redefined the way a small Finnish town heats its residential and commercial buildings, with an enormous silo of 2,000 tons of crushed stone capable of ...

The community swimming pool in the Finnish town of Kankaanpää is heated with sand—well, a sand battery, to be more specific. Energy utility Vatajankoski has partnered with Polar Night Energy, a ...

Engineers create a sand battery that they say will slash the carbon emissions in Pornainen, Finland, by 70% — it uses renewables to heat the sand to almost 850 degrees Fahrenheit. When you purchase ...