What Synthos Green Energy does

Synthos Green Energy (SGE S.A.) is a privately held Polish nuclear project development and investment platform founded in 2019 by Michał Sołowow as part of the MS Galleon Group, which maintains over EUR 7 billion in assets. SGE's sole product focus is the deployment of GE Vernova Hitachi Nuclear Energy's BWRX-300, a 300 MWe Generation III+ boiling water small modular reactor built on the operating history of 67 prior reactor deployments. The company does not manufacture reactors; instead it operates as co-developer, equity investor and project sponsor, structuring dedicated project vehicles such as ORLEN Synthos Green Energy (OSGE, its joint venture with ORLEN in Poland) and SGE SMR UK Limited for the UK program, and signing MoUs/LoIs with national utilities and government entities in Bulgaria, Hungary, Lithuania, Slovakia and Czechia.

The BWRX-300 is positioned as a cost-competitive, modular, passively safe design that can be constructed in 24-36 months on a footprint roughly 10% that of a large nuclear plant, with a 60-year operational life extendable to 90 years. SGE sells not electricity but project development and capital participation: revenue (when it materializes) is expected to come from equity returns in project vehicles, development fees, and long-term power purchase arrangements negotiated through government support schemes such as the UK's Contract for Difference. Applications extend beyond baseload power to district heating, desalination, and clean hydrogen production, and the technology is multi-purpose for industrial and emerging data center demand. The company has assembled a vertically integrated delivery stack spanning technology (GE Vernova Hitachi), construction and EPC (Samsung C&T, Polimex Mostostal, ATEC Group, Laing O'Rourke, Aecon), fuel cycle (Orano, ENUSA, GENUSA), and reference project experience (OPG's Darlington New Nuclear Project in Canada, TVA's Clinch River in the US).

SGE is pre-revenue, with a lean core team of seven employees in Warsaw, and first grid power targeted for the first half of the 2030s in Poland and 2034 in the UK. Its primary regulatory and commercial milestones include UK GDA Step 2 completion in December 2025, a Poland Generic Design Agreement signed in March 2026, Hungary's amendment of its Atomic Energy Act to accommodate SMR licensing, and the July 2026 UK Advanced Nuclear Framework application for 14 BWRX-300 units totaling 4.2 GW across three sites. The company is a participant in the US-led SPRING initiative to coordinate SMR deployment across Central and Eastern Europe, and Samsung C&T is publicly evaluating a strategic investment into SGE's development platform.

Name

Synthos Green Energy

Legal name

SGE S.A.

Website

https://synthosgreenenergy.com

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

1–10 employees

Short description

Synthos Green Energy is a Polish SMR project development platform deploying GE Vernova Hitachi's BWRX-300 small modular reactors across Europe. It serves governments, national utilities, and industrial off-takers through joint ventures, project vehicles, and fleet-based deployment programs in Poland, the UK, Bulgaria, Hungary, Lithuania, and Slovakia.

Ownership category

akta.pro rank

Headquarters

HQ city

Warsaw

HQ country

Poland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Supply Chain, Operations, Marketing or Sales, Infrastructure

Revenue model

1. SMR Project Development and Investment: SGE operates as a co-investor and developer in standardized SMR projects, generating returns through equity participation in project vehicles, development fees, and long-term power purchase arrangements. Revenue is derived from developing BWRX-300 fleets across European markets with strategic partners including utilities and governments.
2. Joint Venture Platform (OSGE): ORLEN Synthos Green Energy (OSGE), the joint venture with ORLEN, is advancing the first European fleet of BWRX-300 reactors in Poland. SGE participates as technology and development partner with equity stakes in project returns.

Go-to-market motion1 record

Distribution channels6 records

Marketing channels5 records

Core offering

SGE develops, finances, and deploys fleets of the BWRX-300 Small Modular Reactor across Europe, acting as a project development and investment platform that integrates GE Vernova Hitachi's reactor technology with EPC partners, fuel cycle providers, utilities, and governments. The company monetizes through equity stakes in country-specific project vehicles (e.g., OSGE in Poland, SGE SMR UK Limited in the UK, the Blue Bird Energy JV in Bulgaria), development fees, and long-term power purchase arrangements.

Product overview

SGE operates as a European SMR development and investment platform focused exclusively on the deployment of the BWRX-300 Small Modular Reactor technology developed by GE Vernova Hitachi Nuclear Energy. The company does not manufacture a standalone software product; rather, it provides nuclear energy infrastructure development services, integrating technology, financing, construction, and operations into a coordinated framework. SGE advances BWRX-300 fleet deployment through its joint venture ORLEN Synthos Green Energy (OSGE) in Poland and develops projects across multiple European countries including the UK, Hungary, Bulgaria, Lithuania, Slovakia, and Czech Republic.

Differentiator

Problem solved

Functional benefit

Products and services

• BWRX-300 Small Modular Reactor Deployment End-to-end development, financing, and deployment services for fleets of the GE Vernova Hitachi BWRX-300 300 MWe boiling water small modular reactor, targeted at European governments, state-owned utilities, and energy-intensive industries for baseload electricity, district heating, desalination, and clean hydrogen production. Each unit can power approximately 300,000-350,000 households, is constructed in 24-36 months using modular techniques, fits a footprint of roughly 10% of a large nuclear plant, features passive safety systems, and operates for 60 years with an option to extend to 90 years.

Quantifiable outcome

• 11% of UK power demand from 4.2GW fleet
• +5 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

20 partnerships are on record, tiered core, regional and flagship.

• GE Vernova Hitachi Nuclear EnergycoreTechnology or Integration · 2 July 2026SGE's core technology partner providing the BWRX-300 SMR design. SGE is GE Vernova Hitachi's deployment partner for Poland and broader Europe. The partnership includes Technical Collaboration Agreement and joint development of standard designs. The BWRX-300 is under licensed construction in Canada and completed UK GDA Step 2 in December 2025.
• Fermi DevelopmentcoreImplementation/ SI/ Consulting Partner · 2 July 2026UK-based SMR developer partner with decade of renewable energy experience. Has screened 100+ sites with ~40 potentially developable, enabling fleet approach. Aligned with emerging government policy and DCO/permitting landscape.
• Laing O'RourkecoreImplementation/ SI/ Consulting Partner · 2 July 2026UK's largest privately owned engineering and construction company bringing nuclear experience and pioneering industrialized construction methods. Applies advanced manufacturing to boost safety and certainty in complex infrastructure.
• Aecon Group Inc.coreImplementation/ SI/ Consulting Partner · 2 July 2026North American construction and infrastructure company leading partner on OPG's Darlington New Nuclear Project (first BWRX-300 in Western world). Brings deep expertise in construction management, advanced automation, fabrication, and modularization.
• EtaracoreImplementation/ SI/ Consulting Partner · 2 July 2026Specialist advisory and consultancy group with senior nuclear support scheme design capabilities. Combined >200 years professional experience including advisory roles on nuclear projects in Poland, Sweden, Belgium, Czechia, Hungary, Turkey, Finland, Holland, Slovakia, Bulgaria, Lithuania, and UK's Hinkley Point C, Sizewell C, and Wylfa.
• Samsung C&TcoreImplementation/ SI/ Consulting Partner · 2 July 2026Part of UK deployment team with 40+ years nuclear engineering and construction experience. Has delivered 12GW across 10 units including UAE Barakah plant. Currently undertaking SMR FEED studies demonstrating global competitiveness in both large-scale reactor and SMR technologies.
• ENUSA Industrias Avanzadas S.A.coreStrategic or Co-development Partner · 14 April 2026Nuclear fuel cooperation agreement signed April 14, 2026 for developing roadmap toward fuel material procurement including low enriched uranium (UF6) procurement, components, and delivery to manufacturing plants. Part of building European fuel supply chain for BWRX-300 fleet deployment.
• GENUSA (GNF ENUSA Nuclear Fuel S.A.)coreStrategic or Co-development Partner · 14 April 2026Nuclear fuel cooperation agreement signed April 14, 2026 providing consultancy, training, and engineering support for nuclear fuel supply and manufactured fuel. GENUSA brings decades of proven fuel fabrication experience through GNF2 proven nuclear fuel design licensed in Europe for nearly two decades.
• Polimex MostostalcoreStrategic or Co-development Partner · 1 April 2026MoU signed April 1, 2026 to cooperate on development and deployment of BWRX-300 SMRs in Central and Eastern Europe. Polimex Mostostal is Poland's largest and most important EPC contractor for energy projects, providing local construction and industrial capabilities.
• ATEC GroupcoreStrategic or Co-development Partner · 1 April 2026MoU signed April 1, 2026 alongside Polimex Mostostal to advance SMR technology in Central and Eastern Europe. ATEC Group brings expanding engineering capabilities in nuclear energy sector and wants to be part of local supply chain.
• Altra (Ignalina Nuclear Power Plant)regionalStrategic or Co-development Partner · 25 February 2026Trilateral MoU signed in Washington with Altra and GE Vernova Hitachi to assess technical and economic feasibility of BWRX-300 deployment in Lithuania. Altra brings nuclear energy experience and competencies valuable for next-generation solutions.
• Slovenské ElektrárneregionalStrategic or Co-development Partner · 1 February 2026MoU signed to explore cooperation in development of BWRX-300 SMR projects in Slovakia and CEE. Covers investment opportunities, licensing, project development, joint ventures, and digital infrastructure linking SMR projects with data center development.
• Blue Bird EnergyregionalStrategic or Co-development Partner · 1 February 2026LOI signed to establish joint venture for building fleet of up to 6 BWRX-300 reactors in Bulgaria. Project will bring zero-emission affordable electricity for industry, AI data centers, and district heating decarbonization.
• Samsung C&TcoreStrategic or Co-development Partner · 1 December 2025MoU signed in Korea to collaborate on SMR deployment combining SGE's nuclear deployment expertise with Samsung C&T's global engineering and construction capabilities. Samsung is considering strategic investment into SGE's development platform. Samsung has successfully delivered 12GW across 10 nuclear units including UAE's Barakah plant.
• OranocoreStrategic or Co-development Partner · 1 November 2025Framework agreements signed at World Nuclear Exhibition (WNE) in Paris providing comprehensive fuel cycle services including uranium mining, conversion, enrichment, spent fuel reprocessing, transport, storage, engineering, and decommissioning. Orano is global leader in nuclear materials supporting BWRX-300 fuel cycle programs.
• U.S. Department of State (SPRING Initiative)regionalStrategic or Co-development Partner · 1 October 2025SGE joined US-led SMR Pan-Regional Interest Nuclear Group (SPRING) initiative launched in Poland. Program designed to accelerate fleet-scale BWRX-300 deployment across CEE through coordination of governments, regulators, utilities, and industry on regulatory frameworks, supply chain, financing, and cross-border cooperation.
• HUNATOMregionalStrategic or Co-development Partner · 1 January 2025LoI signed to assess deployment of BWRX-300 SMRs in Hungary, supporting Hungary's energy security, economic competitiveness, and decarbonization goals. Signed with presence of Hungarian FM Szijjarto, Polish Chargé d'affaires, and US Chargé d'affaires.
• Ontario Power Generation (OPG)coreStrategic or Co-development Partner · 1 January 2020Partnership in BWRX-300 design development agreement signed in Washington with GE Hitachi and TVA. OPG is running the world's first BWRX-300 project at Darlington near Toronto, scheduled for operation by end of 2028. OPG brings reference project experience for European program.
• Tennessee Valley Authority (TVA)coreStrategic or Co-development Partner · 1 January 2020Partnership in BWRX-300 design development agreement. TVA developing first US BWRX-300 at Clinch River, Tennessee, with site permit from US NRC. Investment in design development exceeds USD 400 million from multiple contributors.
• ORLENflagshipStrategic or Co-development Partner · 1 January 2019Joint venture ORLEN Synthos Green Energy (OSGE) created for deploying first European fleet of BWRX-300 reactors in Poland. ORLEN is Central and Eastern Europe's largest energy company. First unit expected commissioned in 2032, with work underway at three sites.

Scale indicators10 records

Recent moves8 records

Expansion highlights7 records

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Customer concentration

• Xx.com/SGE_Nuclear
• LinkedInlinkedin.com/company/synthosgreenenergy

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Synthos Green Energy