When it comes to energy, compact Estonia thinks big. The country, aiming for a full-fledged green transition, is building unique infrastructure to bring this moment closer. Recently, the country welcomed its largest solar park, capable of powering 35,000 households. Now another such step is the development of two battery energy storage systems in Harju County, North Estonia.
The €100M project, led by Baltic Storage Platform, will deliver some of Europe’s largest battery storage complexes with a combined capacity of 200 MW and a total storage capacity of 400 MWh, putting Estonia in the best spot for efficient energy use.
As announced recently, the project has successfully implemented Estonia’s first 330 kV underground cable installation, connecting the battery park to the Estonian grid connection point. “This is an extremely important and real step to prepare the synchronisation of the Baltic countries,” explained Karl Kull, CEO of Evecon, to Energy Storage News. “Secondly, no one has yet built such a large complex of battery parks in continental Europe.”
The project also shows Estonia’s ability to forge powerful international partnerships, uniting Estonian energy innovator Evecon, French solar energy pioneer Corsica Sole, and strategic investment from French fund manager Mirova. “I believe that laying the cornerstone together with our good partners from Corsica Sole and Mirova will not be the last, and we will continue to act to ensure energy security in this area,” Kull says.
Raphael Lance, head of energy transition funds at Mirova, notes that this milestone “speaks volumes to Estonia’s ambitions in deploying local energy storage capabilities.” The first facility in Kiisa is scheduled for completion by the end of 2025, with the Aruküla battery park following in 2026.
The timing of these installations aligns with the Baltic states’ planned synchronisation with the European electricity grid by 2025. The battery parks will play a crucial role in this transition, providing essential frequency regulation and power balancing capabilities. This development is particularly significant as the Baltic states prepare to operate their grids independently of the non-EU power.
It also fits into Estonia’s broader energy strategy, which targets an exit from electricity production from shale gas and a 40% renewable energy mix by 2030.
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