Enefit, the power business unit of Eesti Energia AS, an Estonian state-owned power generator, will build three energy storage power stations in Lithuania with a total capacity of 46MW/184MWh.

Enefit allocated 30.3 million euros for this series of projects, which are expected to be completed in the first half of 2026: 16MW system is located near Kelme I wind farm, 18MW system is adjacent to Kelme II wind farm, and 12MW system is adjacent to Šilalė II wind farm. Relying on the existing energy infrastructure of the wind farm and the grid connection, the efficient landing of new energy storage solutions can be realized.

In 2025, the Baltic Sea region will be decoupled from the BRELL grid comprising Belarus, Russia and, previously, Estonia, Lithuania and Latvia, and will be synchronized with the continental European grid via connecting lines in Poland. This process, which lasted more than ten years, not only promoted the deployment of large-scale BESS, but also accelerated the application of renewable energy, and promoted the Baltic Sea region to become an important energy storage hub.

Since the decoupling from the Russian power grid, the prices of ancillary services in the Baltic region have increased significantly. During a panel discussion at the Central and Eastern Europe Energy Storage Summit 2025, Algirdas Ducinskas, project director at BESS, a Ignitis group, said: "A strong signal for investors is that the ancillary services market is expanding dramatically. But before synchronizing with the European grid, one of the core drivers is the state aid program."

"We have initiated 1.2GWh of state aid applications, and currently 4GWh projects have been approved. There are more projects in the preparatory stage and the second round of applications has been launched." Ducinskas added. "The current price signal is clear. The recent price index released by a third party shows that the Baltic region is the most attractive market-if the energy storage project is put into operation, the internal rate of return (IRR) can reach 20%-30%, which is considerable."

In March 2025, Eesti Energia to put the first large-scale energy storage power station in Estonia into operation. The project is located in Auvere Industrial Power Plant Park, Ida-Vilya County, with a capacity of 26.5MW/53.1MWh. The local system integrator Diotech Group will complete the deployment using LG's plan from South Korea. Enefit Solutions, a soil engineering company, will be responsible for installation and grid connection. Eesti Energia's first purchase attempt was unsuccessful, but completed the purchase by a second time in January 2024.

The independent power producer (IPP)E energija Group has also launched what it claims is the largest commercial BESS operation in Lithuania. The Vilnius BESS project is located in the Trackay district near Vilnius and has a capacity of 65MW/130MWh. In February 2025, E energija Group announced the launch of a 120MWh energy storage power station near Vilnius. Local system integrators will provide energy storage solutions, using Ningde era batteries, PE PCS and independently developed EMS.