Enefit to Triple Its Battery Storage Capacity

Enefit, the electricity business of Eesti Energia, is expanding its energy storage portfolio by building three new battery storage systems next to its wind farms in Lithuania. The new systems will have a combined capacity of 46 megawatts (MW) and 184 megawatt-hours (MWh). Once completed, Enefit’s storage portfolio will grow from the current 29 MW to 75 MW, strengthening the company’s position in the Baltic energy storage market.

“Energy storage is a key component of the modern energy system. Battery solutions help balance wind and solar generation, support grid stability, and mitigate high price peaks,” said Donatas Celešius, Member of the Management Board of Enefit and Head of Business Development. “Storage solutions also increase the value of our existing production assets and strengthen our integrated generation portfolio as a whole.”

Enefit is investing a total of €30.3 million in the projects, which will result in three new storage systems to be completed in the first half of next year: a 16 MW system next to the Kelme I wind farm, an 18 MW system next to Kelme II, and a 12 MW system next to the Šilalė II wind farm. Smart use of existing energy infrastructure and grid connections at the wind farms allows the company to implement the new storage solutions significantly more efficiently.

Preparations for construction are already underway, and the projects will be completed in the first half of next year. The battery systems will be able to participate both in the electricity market and system services markets, contributing to the security of supply in Lithuania and the wider Baltic region. Energy storage also supports the transition to renewable energy, which ultimately helps deliver more affordable final electricity prices for consumers.

Enefit has a strong presence in the Lithuanian market in terms of both production and customer portfolio. More than one-third of the company’s renewable energy generation is located in Lithuania, making it an important market for Enefit. In 2025, Eesti Energia commissioned the Auvere battery storage system in Ida-Viru County, Estonia, with a capacity of 26.5 MW and 53.1 MWh.