Polimex Mostostal S.A., SGE S.A. and ATEC Group sp. z o.o. are establishing cooperation to promote the development of SMR technology in Central and Eastern Europe

On 1 April 2026, Polimex Mostostal S.A., SGE S.A. and ATEC Group sp. z o.o. signed a cooperation agreement.

The subject of the signed agreement is cooperation in identifying opportunities for the deployment and construction of small modular reactors (SMRs) in the Central and Eastern European region, using the world’s most commercially advanced SMR technology, BWRX-300, developed by GE Vernova and Hitachi Nuclear Energy. SGE S.A. is currently developing partnerships and projects based on the BWRX-300 in more than half a dozen European countries.

The aim of the agreement is to facilitate cooperation between companies and to establish working groups that will cooperate in potential projects in Central and Eastern Europe. In particular, these activities will involve identifying areas of mutual interest and assessing the companies’ expertise and organisational capabilities in the context of implementing nuclear investments.

Polimex Mostostal, SGE and ATEC thus confirm their ongoing commitment to the development of nuclear energy and the establishment of a robust supply chain for SMR projects in Poland and the region.

“The signing of the agreement with SGE and ATEC is an important step towards building partnerships for the implementation of SMR projects in the Central and Eastern Europe region. It lays the foundation for identifying areas of potential cooperation and for pinpointing sectors where we may draw on our experience in delivering large-scale industrial and energy projects. At the same time, it enables the complementary use of all parties’ capabilities in the context of developing SMR projects. We see great potential in this technology and want to actively participate in building the supply chain for this type of investment,” said Jakub Stypuła, President of the Management Board of Polimex Mostostal S.A.

“We are developing a coherent model for the deployment of SMR technology in Central and Eastern Europe, which combines access to the proven BWRX-300 technology with local construction and industrial expertise. The agreement with Polimex Mostostal and ATEC strengthens our ability to scale up projects in the region and build an effective supplier ecosystem. Our goal is to develop repeatable, financeable nuclear projects that will provide tangible support for the energy transition and energy security of the countries in the region,” said Rafał Kasprów, CEO of SGE S.A.

“ATEC is consistently expanding its engineering capabilities in the nuclear energy sector. We are very much looking forward to working with Polimex Mostostal, Poland’s largest and most important main contractor for energy projects, and we see great potential in implementing the proven BWRX-300 technology in our country for two reasons: first, Poland needs nuclear power to stabilise its energy system, which must also rely on stable energy sources and on reliable, low-carbon technologies capable of keeping the grid operational under adverse conditions. Nuclear energy is currently the only scalable option that simultaneously provides resilience, decarbonization, and strategic autonomy. If we want to achieve an energy transition that is not only green but also reliable and delivers affordable energy prices, nuclear power must move from the margins back to the centre. Second, the SMR project presents a unique opportunity to establish a genuinely local supply chain, in which we, together with Polimex Mostostal, aim to play a key role. This is a unique opportunity for our companies, one we simply cannot pass up,” said Maciej Stańczuk, a Board Member of the ATEC Group.

The cooperation between Polimex Mostostal S.A., SGE S.A. and ATEC Group sp. z o.o. aligns with the long-term development strategies of all parties, focused on advancing nuclear energy sector in Central and Eastern Europe and effectively leveraging existing expertise in the execution of SMR projects.