The European Commission is supporting the construction of the electricity interconnector between Poland and Lithuania with a €60 million (£49m) investment.
The current project will focus on building a power transmission line between the Polish city of Ełk and the Polish-Lithuania border in the Polish regions of Podlaskie and Warminsko-Mazurkie.
It is the fifth major project of the Poland-Lithuania power link, which is expected to help complete the European energy market by integrating Poland and the three Baltic States of Lithuania, Latvia and Estonia as well as improve power supply for consumers, the Commission said.
Johannes Hahn, EU Commissioner for Regional Policy said: “The issue of energy security and supply is vital for the European Union and we know how keenly it is felt, in particularly in countries like Poland and the Baltics States at this time.
“Projects like this address the question of the reliance on external power exports and they are vital to ensure the fulfilment of the European single energy market.”
The cash was provided through the European Regional and Development Fund (ERDF).
The Commission is currently inviting bids for a share of €750 million (£611.5m) for energy infrastructure projects across the EU.