The third energy package, approved in the European Union in 2009, stipulates the requirement to separate the transmission and production from grid ownership in the electricity and gas sectors.

During 2010–2011, Litgrid took over the ownership and maintenance of the electricity transmission grid from Lietuvos energija (currently – Ignitis group), while the latter company remained the owner of the largest power plants in the country.

Litgrid completed the strategic electricity project in collaboration with the Swedish power transmission system operator Svenska kraftnät.

[citation needed] Harmony Link is a planned high-voltage direct current (HVDC) connection between Lithuania and Poland.

The power energy systems of the Baltic states were still dependent on the frequency control operations conducted in Russia through IPS/UPS.

[citation needed] On 20 June 2019, in Brussels, a political agreement was signed on the implementation of the synchronisation of the Baltic electricity system with the European grid.

The agreement established a specific action plan and key projects to be implemented until 2025, when the Baltic states are to join the secure and reliable European energy system.

[citation needed] The Baltic synchronisation with the continental European grid requires not only a new connection with Poland, but also the enhancement of internal transmission networks and preparation of the systems for disconnection from the IPS/UPS and for independent frequency control.

[citation needed] This centre was a strategic project in terms of synchronisation, because electricity transmission frequency was planned to be controlled from it.