Helsinki Field Energy Storage Project

3 FAQs about [Helsinki Field Energy Storage Project]

How big is Finland''s underground heat storage system?

At more than 1 million cubic meters in size, the underground heat storage system will have a total capacity that corresponds to the annual heating demand of a medium-sized Finnish city. The 90 GWh seasonal thermal energy storage will be built in Vantaa, near Helsinki.

How much does it cost to build a symphony pier in Finland?

Now, with all permits in place, the project is expected to break ground in summer this year and slated for completion in 2028. The project cost is estimated to be around €200 million ($217 million), and it has already been awarded a €19 million investment grant from Finland’s Ministry of Economic Affairs and Employment.

Where will the 90 GWh thermal energy storage be built?

The 90 GWh seasonal thermal energy storage will be built in Vantaa, near Helsinki. A total of three caverns about 20 meters wide, 300 meters long, and 40 meters high will be excavated. The bottom of the caverns will be 100 meters below ground level.

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