Nidec Conversion awarded the Hertz 1 project, the largest BESS project in Estonia
Nidec Conversion, a leading international provider of power conversion solutions for energy, mobility and the environment, has been awarded a landmark project in the Baltic region.
Baltic Storage Platform, a joint venture between Estonian energy company Evecon, French renewable energy producer Corsica Sole, and Mirova, aims to build a large-scale battery storage facility in Estonia. This facility, representing 100 MW and 200 MWh, is set for delivery by the end of 2025.
The site and its substation, built by Connecto, will be connected to Estonia’s Transmission System Operator (Elering) via a 330 kV AC underground cable—an unprecedented infrastructure development in Estonia. This milestone will enhance grid stability and contribute to the country’s synchronization with the European grid.
As the largest BESS project in the Baltic States and Nidec’s first in the region, this initiative highlights the company’s leadership in addressing the growing demand for energy storage, which is essential to the global energy transition.
As the Engineering, Procurement, and Construction (EPC) contractor, Nidec Conversion will deliver a turnkey solution for Baltic Storage Platform. Nidec will oversee detailed engineering, civil and electrical works, equipment integration, software implementation, and commissioning. The 54 AC-box containers will be assembled at Nidec Conversion’s French plant in Roche-la-Molière, near Saint-Étienne, where the company integrates batteries and installs its in-house manufactured electric inverters.
With rapidly increasing operations in France, Nidec Conversion is expanding its facilities in the Saint-Étienne region through a €17 million investment to meet growing market demands.
Dominique Llonch, CEO of Nidec Conversion, states: “We are proud to work with our long-standing partner Corsica Sole on this new project, the largest in the Baltic States, which will contribute to address the challenges of supporting grid frequency services there. This also marks the start of new opportunities in the Baltic area for Nidec. Nidec is committed to supporting the energy transition worldwide to guarantee a more reliable and a cleaner future, and can rely for that on very skilled and dedicated teams, in France and around the world”.
Franck Girard, President of Nidec ASI SAS, states: “We are delighted to work with our long-standing partner Corsica Sole on this project, the largest in the Baltic States. The increasing proportion of renewable energies in the electricity mix presents grid frequency stability challenges. As a committed supporter of the Energy transition, Nidec Conversion has the opportunity to offer its expertise recognised worldwide for a more reliable and cleaner future. A first in the Baltic area for Nidec Conversion”.
Michael Coudyser, CEO of Corsica Sole, adds: “As a pioneer in energy storage, Corsica Sole is proud to contribute to the largest battery storage project in the Baltic States. This initiative reflects our commitment to accelerating Europe’s transition to a low-carbon energy system. Through strategic collaborations like this one with Nidec and our partners, we continue to deploy innovative storage solutions that enhance grid stability and support the integration of renewable energy on a large scale.”
Karl Kull, CEO of Evecon, adds: “Kiisa Battery Park will reinforce and stabilise the Estonian power grid by providing frequency reserve and smoothing out fluctuations. It has a noteworthy connection capacity and it will allow for rapidly and efficiently responding to any changes in the power grid once it commences operation in the autumn. Therefore, the solution supports the security of the supply of the entire region and allows for more efficient integration of various types of renewable energy sources. This is a historic moment for the entire Estonian energy sector, but also for our region with respect to synchronisation with the European grid.”
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