By Abdullahi Lukman
Mirova and Evecon have launched Estonia’s largest solar-plus-storage hybrid project at the 77.5MWp Kirikmäe site, marking a significant expansion of renewable energy infrastructure in the Baltics.
The Kirikmäe plant is being upgraded with a 55MW/250MWh battery energy storage system currently under construction by WiSo Engineering, with equipment supplied by Huawei.
The project is scheduled to begin operations between the third and fourth quarters of 2026.
Once operational, the hybrid facility will deliver grid stability services, including frequency containment reserve (FCR), automatic frequency restoration reserve (aFRR), and manual frequency restoration reserve (mFRR), strengthening Estonia’s power system reliability.
The Baltic Renewable Energy Platform (BREP), backed by Mirova and Evecon, has also signed the first flexibility and power purchase agreement (FPPA) of its kind in the Baltics with Pure Energy.
The agreement will cover electricity output from the Kirikmäe, Imavere and Lohu Mets solar sites.
Financing for the next phase of development has been secured through a new long-term facility of approximately €85 million from Swedbank.
The funding will refinance the existing solar portfolio, support construction of the Kirikmäe battery system, and provide additional credit lines.
Raphaël Lance, global head of private assets at Mirova, said the combination of battery storage capacity and the long-term FPPA demonstrates how innovation can accelerate renewable integration into Europe’s energy systems.
Evecon CEO Karl-Joonatan Kvell added that hybridising the Kirikmäe solar plant and implementing the FPPA reflect strong partnerships and technical standards shaping Estonia’s electricity future.
The project underscores growing investment in hybrid renewable infrastructure across the Baltic region, aimed at improving grid flexibility, enhancing energy security, and advancing the clean energy transition.