The largest commercial battery energy storage system in Lithuania to date has joined the electricity balancing market.
A new participant has joined the electricity balancing market organised by Lithuania’s electricity transmission system operator Litgrid and has submitted its first bids – a 65 MW, 130 MWh battery energy storage system developed by the E energija group near Vilnius, in the Trakai district.
This is currently the largest commercial storage facility in the country, contributing to maintaining the balance between electricity consumption and generation within Lithuania’s power system.
“As Lithuania aims to generate all the electricity it requires from renewable sources, the demand for balancing services is increasing. We are therefore consistently developing the energy balancing market and facilitating the connection of new participants. Expanding the technical capabilities of balancing services enables the integration of greater volumes of renewable energy resources and reduces balancing costs. The connection of this commercial battery to the balancing market represents a significant boost for the entire electricity system,” Donatas Matelionis, Head of the System Operations Department at Litgrid told The Voice of Renewables.
The battery park project is being developed by the E energija group, balancing services are provided by Capalo AI, and the battery management solution was implemented by Nord energija. The storage system has successfully completed readiness certification tests and will provide Frequency Containment Reserve (FCR), manual Frequency Restoration Reserve (mFRR), and automatic Frequency Restoration Reserve (aFRR) balancing services. The batteries will be charged from the grid when there is surplus electricity in the transmission system and discharged when a shortage arises.
“This battery park project demonstrates how large-scale energy storage can contribute to Lithuania’s transition to renewable energy sources while delivering tangible benefits to the electricity system. By integrating the E energija storage facility into our ‘Zeus VPP’ platform, we ensure that it operates efficiently across all wholesale and balancing markets,” says Henri Taskinen, CEO of Capalo AI.
Litgrid currently has balancing service agreements with 27 market participants. Some are already providing balancing services, while others are carrying out preparatory work.
Balancing services can be delivered using various technologies, including battery energy storage systems, solar and wind power plants, and demand-side flexibility. Participants in the balancing energy market must be able to immediately reduce or increase their generation or consumption capacity so that the transmission system operator can maintain a continuous balance between electricity production and consumption.
In recent years, the Baltic transmission system operators Litgrid, Augstsprieguma tīkls and Elering have joined common European balancing exchange platforms. In October 2024, they joined the manual Frequency Restoration Reserve platform MARI, and in March–April 2025, the automatic Frequency Restoration Reserve platform PICASSO. Participation in the European balancing market has opened up new opportunities for electricity producers and large consumers in the Baltic States to provide balancing services.
