A Finnish town now heats itself through winter using a giant battery made of 2,000 tonnes of sand, charged by cheap electricity and holding the warmth for months

A Finnish town is using a large sand battery to store heat. This innovative system utilises crushed soapstone to retain warmth for weeks. Cheap electricity charges the battery, which then supplies district heating networks. The technology offers a cost-effective way to store renewable energy as heat. This approach helps reduce fossil fuel use and carbon emissions significantly.

A Finnish town now heats itself through winter using a giant battery made of 2,000 tonnes of sand, charged by cheap electricity and holding the warmth for months
A Finnish town is using a large sand battery to store heat. This innovative system utilises crushed soapstone to retain warmth for weeks. Cheap electricity charges the battery, which then supplies district heating networks. The technology offers a cost-effective way to store renewable energy as heat. This approach helps reduce fossil fuel use and carbon emissions significantly.