Energia futura has completed the high-voltage grid connection works for the largest privately developed battery energy storage system (BESS) project in Lithuania, enabling the integration of a 60 MW / 130 MWh storage facility into the national electricity transmission network.

The project, developed by E energija Group, involved connecting the battery energy storage park to the Šventininkai 110/10 kV transformer substation, which is operated by Litgrid, Lithuania’s transmission system operator (TSO).

Under its scope of work, Energia futura was responsible for all high-voltage connection activities on the Litgrid side. These included the construction of a new 110 kV bay infrastructure, comprising foundations, cable ducts, internal access roads, fencing, and surface works. The company also installed 110 kV open switchgear equipment, including disconnectors, a circuit breaker, current and voltage transformers, as well as terminal and metering cabinets.

In addition, Energia futura carried out the installation and commissioning of protection, control, and communication systems, including a new relay cabinet, upgrades to busbar differential protection, and associated communication equipment. All required RPA and RTU configuration, testing, and commissioning works were also completed.

The 130 MWh battery energy storage system is expected to improve transmission grid balancing and operational stability. Projects of this scale require close coordination between energy storage technologies and high-voltage infrastructure to ensure reliable integration into the national power system.

Source: Energia futura / LinkedIn