250MWh ‘Sand Battery’ to start construction in Finland, for both heating and ancillary services

Polar Night Energy and Lahti Energia are partnering on the Sand Battery project in Finland. Image: Polar Night Energy / Lahti Energia.

Technology provider Polar Night Energy and utility Lahti Energia have partnered for a large-scale project using Polar’s ‘Sand Battery’ technology for the latter’s district heating network in Vääksy, Finland.

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