The deal with terminal operator Klaipedos Nafta will allow PGNiG to import 6 terawatt hours (TWh) of LNG, equivalent to over 500 million cubic metres of natural gas annually via the terminal through 2032, the Polish firm said in a press release.

"I am convinced that the cooperation (...) will not only contribute to the business plans of both companies, but will also enable further integration of gas markets in this part of Europe," said PGNiG chief executive Iwona Waksmundzka-Olejniczak.

"Allocation of the long-term capacity extends our future cooperation and will further contribute to the enhanced energy security of the region (...)," said Klaipedos Nafta CEO Darius Silenskis.

PGNiG started importing LNG through Klaipeda in May and has received six deliveries at the facility, with part of the cargo sold to customers in the Baltic States and the rest transported to Poland, the company said.

(Reporting by Karol Badohal and Patrycja Zaras; editing by Jason Neely and Chizu Nomiyama)