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Jan 25 (Reuters) - Sempra Energy said on Wednesday it would supply 1 million tonnes per annum of liquefied natural gas (LNG) from its Port Arthur LNG Phase 1 project to Poland's PKN ORLEN S.A. for 20 years.

The deal is the latest in a series of long-term contracts for U.S. LNG after Western sanctions on major producer Russia following its invasion of Ukraine squeezed an already-tight global supply.

Sempra last year also struck deals with ConocoPhillips , INEOS, ENGIE and Germany's RWE for the sale and purchase of LNG from the proposed Phase 1 project.

With Wednesday's supply deal with PKN ORLEN, which recently acquired the Polish Oil & Gas Co, Sempra's Port Arthur LNG Phase 1 is fully subscribed with 10.5 Mtpa under binding long-term agreements, the company said.

Sempra will now focus on completing the remaining steps needed to achieve making a final investment decision for the Port Arthur LNG Phase 1 project in the first quarter of 2023, with first cargo deliveries expected in 2027. (Reporting by Ankit Kumar Editing by Vinay Dwivedi)