Poland’s SGE and ZE PAK have agreed to establish PAK BWRX, a joint venture to develop a nuclear power plant in Pątnów (Poland), featuring up to six BWRX-300 small modular reactors (SMRs) with a potential combined capacity of 1.8 GW (ZE PAK press release, 15/10/2026).
“The partnership between SGE and ZE PAK addresses one of the biggest challenges facing Poland’s energy sector: replacing aging coal-fired power plants while meeting rapidly growing electricity demand. By 2032, Poland could face a shortfall of 5 GW in reliable generating capacity”, SGE said in a separate press release. The company also cited forecasts from Poland’s transmission system operator, Polskie Sieci Elektroenergetyczne (PSE), indicating that electricity demand could rise by approximately 40% over the next 14 years.
The planned SGE–ZE PAK project will repurpose an existing coal-fired power plant owned by ZE PAK. The company said its "participation will consist of contributing rights to land currently owned by the company to the joint venture. In subsequent years, ZE PAK will be able to remain in the project as a minority shareholder or sell its shares in the company managing the project to SGE, thus ending its involvement in the project".
The announcement follows another recent development in Poland’s nuclear sector: the Polish Ministry of Energy, Polskie Elektrownie Jądrowe (PEJ) and state-owned utility Polska Grupa Energetyczna (PGE) signed an agreement to develop the country’s second nuclear power plant (EJ2) (KEI, 15/10/2026).
Poland’s first nuclear power plant (EJ1), planned for Lubiatowo-Kopalino (Choczewo), will comprise three Westinghouse AP1000 reactors with a combined capacity of 3,750 MW. Construction is scheduled to begin in 2028, with the first unit expected to enter commercial operation in 2036 and the plant reaching full capacity by 2038.
Under Poland’s National Energy and Climate Plan (NECP), nuclear power is expected to reach approximately 7.7 GW of operational capacity by 2040, accounting for around 19% of the country’s electricity mix. In 2025, Poland’s electricity generation mix was dominated by coal (51%), followed by natural gas (14%), wind (14%) and solar (13%), according to our data (Enerdata Global Energy Research).
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