A review of the current status of energy storage in Finland and
This paper has provided a comprehensive review of the current status and developments of energy storage in Finland, and this information could prove useful in future
Currently, utility-scale energy storage technologies that have been commissioned in Finland are limited to BESS (lithium-ion batteries) and TES, mainly TTES and Cavern Thermal Energy Storages (CTES) connected to DH systems.
Reserve markets are currently driving the demand for energy storage systems. Legislative changes have improved prospects for some energy storages. Mainly battery storage and thermal energy storages have been deployed so far. The share of renewable energy sources is growing rapidly in Finland.
However, the energy system is still producing electricity to the national grid and DH to the Lempäälä area, while the BESSs participate in Fingrid's market for balancing the grid . Like the energy storage market, legislation related to energy storage is still developing in Finland.
The first deep borehole (1.3 km) geothermal energy system in Finland was commissioned in 2020 at a logistics center in Espoo . Some of the deep borehole projects are planned to be used also as thermal energy storages for DH networks [234, 237]. 5.3.5. Pit thermal energy storage Two pit thermal energy storages are being planned in Finland.
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