European Energy has opened a 25 MW battery energy storage system (BESS) with a storage capacity of 65 MWh at its Anykščiai renewable energy site in Lithuania, marking the Danish company’s first operational battery storage project in the Baltic states. The facility is co-located with an existing 78.5 MW solar park, turning the site into a hybrid renewable energy facility that combines electricity generation with storage. The company announced the opening on October 6, 2026, following the battery’s connection to Lithuania’s electricity transmission grid in spring.
The project’s defining feature is the integration of battery storage with an established utility-scale solar installation. The battery can store electricity when generation is high and release it when the power system requires additional supply. This flexibility can help manage fluctuations in renewable generation, support balancing services and reduce exposure to electricity curtailment and price volatility. The Anykščiai solar park was already participating in Lithuania’s system services market before the battery was added, creating a platform for combining renewable generation with additional storage-based services.
The combined site covers approximately 120 hectares and is expected to generate around 80,000 MWh of renewable electricity annually, equivalent to the reported annual electricity consumption of about 34,000 households. This generation estimate relates to the renewable energy park, rather than the battery’s storage capacity alone. The distinction is important: the solar installation produces electricity, while the battery shifts some of that electricity across time to improve the facility’s operational flexibility.
The project also reflects Lithuania’s wider expansion of grid-connected energy storage. In June 2026, transmission system operator Litgrid reported that a separate 80 MW battery facility with 186.26 MWh of storage had been connected in the Panevėžys district. Litgrid has identified battery installations as an increasingly important resource for maintaining electricity-system balance as renewable generation grows. The Anykščiai project therefore forms part of a broader shift toward adding flexibility resources alongside solar and wind capacity.
European Energy is also developing its storage portfolio beyond Anykščiai. The company says it has invested approximately €480 million in renewable energy projects in Lithuania and has around 800 MW of solar, wind and storage projects under development in the country. A second battery project in Telšiai, planned at approximately 12 MW and 50 MWh, is under construction, with connection expected in December 2026. In Latvia, its Saldus hybrid park combines a 65.7 MWp solar installation with a 46 MW / 105 MWh battery system. In August, European Energy selected Capalo AI to provide optimization and energy-trading services for the Anykščiai and Saldus projects, highlighting the growing role of market operations alongside physical storage infrastructure.
The Anykščiai opening demonstrates how renewable developers are adding storage to operating generation assets rather than relying exclusively on new power plants. The project’s significance lies not only in its 65 MWh storage capacity, but also in its integration with an existing solar park and its potential to support balancing services as Lithuania expands renewable electricity