On March 17 2023, the Extraordinary Meeting of Polskie Elektrownie Jądrowe Sp. z o.o. dismissed current President of the Management Board, Mr. Tomasz Stępień from the Company's Management Board at the same time entrusting the role of the Acting President to the current Vice-President of the Company, Mr. Łukasz Młynarkiewicz.

Strengthening cooperation in the nuclear power sector was one of the main topics of the E23: PL for UA “Polish-Ukrainian partnership in building the energy security of the future” conference held on 15 March in Warsaw. The event brought together the representatives of the governments of the two countries and representatives of major companies responsible for strategic energy infrastructure.

An application by Polskie Elektrownie Jądrowe company has been submitted on the 13th of March to the President of the Polish National Atomic Energy Agency (PAA) to classify the safety systems of a nuclear power plant. On the basis of this application, the PAA President will draw up a general opinion that will assess PEJ's planned organizational and technical solutions for safety systems and structural and equipment components used by Westinghouse Electric Company in the design of the AP1000 reactor.

On 22 February 2023, Polskie Elektrownie Jądrowe (PEJ) and Westinghouse Electric Company signed a contract commencing joint activities that will lead to the preparation of the design of the first nuclear power plant in Poland.

Polskie Elektrownie Jądrowe Company have signed a Cooperation Agreement with the Westinghouse Electric Company, whose AP1000 technology was selected for the first nuclear power plant in Poland by the Government of the Republic of Poland.