JAVYS, a. s.

Name

JAVYS, a. s.

Legal name

Jadrová a vyraďovacia spoločnosť, a.s.

Website

http://www.javys.sk

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

501–1,000 employees

Ownership category

akta.pro rank

Product category

Nuclear Decommissioning Services

NAICS

Hazardous Waste Treatment and Disposal (562211), Remediation Services (562910)

SIC

Hazardous Waste Management (4955)

akta.pro primary industry

Facility Deactivation, Defueling Support & Transition to Decommissioning (EUAKAFAH)

akta.pro secondary industries

Decontamination & Dismantling (D&D) of Nuclear Facilities (EUAKAFAB), Radioactive Waste Processing, Packaging & On-site Interim Storage (Decommissioning Waste) (EUAKAFAE), Repository operations & waste emplacement (handling systems, emplacement, ventilation) (EUAKAGAI), Interim storage facilities & operations (LLW/ILW/HLW storage, vaults, dry storage for waste forms) (EUAKAGAD), Waste conditioning, packaging & container systems (drums, casks, overpacks, canisters) (EUAKAGAC), Nuclear Waste Management & Geological Disposal (EUACADAM)

Keywords

• Nuclear decommissioning services
• Radioactive waste management
• Spent fuel storage
• Nuclear waste processing
• Institutional radioactive waste disposal

Headquarters

HQ city

Jaslovské Bohunice

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Supply Chain, Others

Revenue model

1. Nuclear Decommissioning Services: Core services include decommissioning of nuclear power plants A1 and V1, radioactive waste management, spent nuclear fuel handling, and institutional radioactive waste management across Slovakia. Revenue is derived from government budgets and international nuclear decommissioning support programs.
2. EU Bohunice Program (BIDSF): European Union funded program through Bohunice International Decommissioning Support Fund (BIDSF) managed by EBRD. As of end 2025, over €891 million has been spent on V1 decommissioning, with EU providing over €517 million in funding.
3. Commercial Services: Sale of equipment (IT, cables, lead, furniture) through public tender procedures. Services include radioactive waste processing for external institutions and consulting services in nuclear decommissioning internationally.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

JAVYS provides comprehensive nuclear decommissioning and radioactive waste management services for Slovakia's legacy nuclear facilities. The company operates the complete nuclear back-end chain including decommissioning of the A1 and V1 nuclear power plants, radioactive waste processing (bituminization, cementation, incineration, metal melting, decontamination), spent nuclear fuel storage, and final disposal at the Republic Repository RAO Mochovce. Additional services include management of institutional radioactive waste from medical and research institutions and transportation of radioactive waste and spent fuel.

Product overview

JAVYS, a. s. (Jadrová a vyraďovacia spoločnosť / Nuclear and Decommissioning Company) operates as a nuclear services company managing the back-end of the nuclear fuel cycle in Slovakia. The portfolio consists of two decommissioning nuclear power plants (JE A1 with KS 150 reactor and JE V1 with VVER 440 reactors), multiple radioactive waste processing facilities (Bohunické spracovateľské centrum RAO, PS 45 incineration plant, bituminization line, metal remelting facility, waste water treatment), waste storage (Integrálny sklad RAO, Medzisklad vyhoretého paliva), and the Republikové úložisko RAO Mochovce final disposal repository. The company also provides decommissioning services, institutional RAW management, transport services, and operates visitor information centers. A new nuclear power project is under development with strategic partner ČEZ.

Differentiator

Problem solved

Functional benefit

Products and services

• Nuclear Power Plant Decommissioning Services (Vyraďovanie jadrových elektrární) Comprehensive decommissioning services for nuclear power plants including reactor dismantling, primary circuit component removal, controlled zone system disassembly, decontamination, demolition, and site release. JAVYS manages V1 (VVER 440) and A1 (KS 150) decommissioning projects at the Jaslovské Bohunice site.
• Institutional RAW and Trapped Radioactive Materials Management (Nakladanie s IRAO a ZRAM) Management services for institutional radioactive waste and trapped radioactive materials from healthcare facilities, hospitals, laboratories, and research institutions throughout Slovakia. Includes disposal of medical isotope waste.
• RAW and Spent Fuel Transport Services (Preprava RAO a VJP) Specialized transportation services for radioactive waste (RAW) and spent nuclear fuel (VJP) to storage and disposal facilities, operating as part of the integrated nuclear back-end chain.
• Bohunické spracovateľské centrum RAO (BSC RAO) - Radioactive Waste Processing Centre Complete radioactive waste processing facility including solid waste sorting, high-pressure compaction (20,000 kN force), incineration (50 kg/h capacity for solid RAO), liquid RAO concentration, and cementation into fiber-concrete containers (VBK). Achieves 4-8x volume reduction through high-pressure compaction.
• Republic Repository of Radioactive Waste (RÚ RAO) Mochovce Multi-barrier surface-type repository spanning 11.2 ha for final disposal of solid and solidified low-level radioactive waste from nuclear power plant operations, decommissioning, research institutes, laboratories, and hospitals. Features 120 currently operational storage boxes (300 planned), each 17.4 × 5.4 × 5.5 m with 90 fiber-concrete container capacity. Total planned capacity: 27,000 VBK with 33,480 m³ usable volume.
• Interim Spent Fuel Storage (MSVP - Medzisklad vyhoretého paliva) Facility for interim storage of spent nuclear fuel from V1 and A1 nuclear power plants. Maximum capacity of 14,112 spent fuel assemblies stored in KZ-48 and T-13 type containers in demineralized water pools. Maximum thermal power of stored spent fuel: 1,990 kW with maximum operating water temperature of 50°C.
• PS 45 - Radioactive Waste Incineration Plant (Spa�ovňa RAO) Modern radioactive waste incineration facility with two-stage combustion and automated process control under constant negative pressure. Operating temperatures: 750-850°C (first stage) and 900-1,100°C (second stage). Processes solid and liquid RAW with 50 kg/h capacity for solid RAW, achieving 80-150x volume reduction.
• JAVYS Information Centers (Informačné centrá JAVYS) Visitor information centers at Bohunice and Mochovce locations offering educational tours, 3D films, interactive exhibits, and information about nuclear decommissioning and radioactive waste management. Free guided tours available by appointment Tuesday through Thursday.
• Fiber-Concrete Container Production (Výroba vláknobetónových kontajnerov) Production of fiber-concrete containers (VBK) used for storage and disposal of radioactive waste at JAVYS facilities. Containers are 1.7 x 1.7 x 1.7 m with 0.1 m wall thickness and 3 m³ volume capacity.
• Integral RAW Storage (Integrálny sklad RAO) Storage facility for solid or solidified radioactive waste (RAW) awaiting further processing, processed RAW awaiting transport to permanent disposal, and solid RAW awaiting activity decay before environmental release. Total storage volume approximately 13,000 m³.
• Final Processing of Liquid RAW Mochovce (Finálne spracovanie kvapalných RAO Mochovce) Processing facility for liquid RAW (radioactive concentrates, saturated sorbents, and sludges) into forms suitable for repository storage. Includes bituminization of radioactive concentrates into 200L drums (7 per fiber-concrete container), cementation with 2.9 m³ VBK capacity producing 1 VBK per shift.
• Jadrová elektráreň V1 (Nuclear Power Plant V1) - Decommissioning Project VVER 440/V230 pressurized water reactor nuclear power plant with 2 blocks of 440 MW electrical output each, located in Jaslovské Bohunice. Commercial operation ran 1978-2008, ceased in 2008, and is currently undergoing comprehensive decommissioning under JAVYS management.
• Jadrová elektráreň A1 (Nuclear Power Plant A1) - Decommissioning Project KS 150 heavy water moderated gas-cooled nuclear reactor with 143 MW electrical output, the first nuclear power plant in former Czechoslovakia. Decommissioned after two accidents during fuel replacement operations in 1976-1977, with operation permanently discontinued in 1979. JAVYS manages ongoing decommissioning activities.

Quantifiable outcome

• 98%+ decontamination success rate for contaminated materials
• +2 more outcomes

Named customers4 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Five partnerships are on record, tiered major and core.

• China Institute of Atomic Energy (CIAE)majorStrategic or Co-development Partner · 3 June 2026Memorandum of Understanding signed June 3, 2026 in Beijing establishing framework for long-term technical cooperation in nuclear decommissioning, radioactive waste and spent fuel management, and other nuclear energy areas. Includes joint technical research, experience sharing, consulting services, and joint seminars. CIAE is China's largest nuclear research center with over 3,200 employees including 700 scientists, operating CARR research reactor and CEFR experimental fast reactor.
• ČEZ, a.s.coreStrategic or Co-development PartnerStrategic partner for New Nuclear Source (NJZ) project. ČEZ is a major Central European energy company with nuclear expertise. The partnership includes a shareholders' agreement for the new nuclear project.
• International Atomic Energy Agency (IAEA)coreStrategic or Co-development PartnerIAEA Cooperation Center located at JAVYS, renewed through 2029, enabling sharing of Slovak nuclear decommissioning expertise with the international community. Company hosts regular IAEA missions and technical visits. Slovakia has hosted visits from IAEA permanent representatives of member states.
• Westinghouse Spain, Westinghouse Sweden, VUJE ConsortiummajorImplementation/ SI/ Consulting PartnerConsortium implementing BIDSF D4.2 project for dismantling large primary circuit components at V1 nuclear plant. Westinghouse provides nuclear decommissioning expertise; VUJE is a Slovak nuclear engineering company.
• VUJE, a.s.majorTechnology or IntegrationSlovak nuclear engineering company providing technical expertise for decommissioning projects. Partner in the Westinghouse consortium for large component dismantling.

Scale indicators11 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• ONDRAF/NIRAS: Belgium's national radioactive waste management organization, responsible for long-term management of all radioactive waste in Belgium. Direct functional peer to JAVYS as a state-mandated waste management agency, including repository planning and surface storage operations.
• SKB (Svensk Kärnbränslehantering AB): Swedish state-owned company responsible for managing and disposing of spent nuclear fuel and radioactive waste from Swedish nuclear power plants. Direct peer to JAVYS as a state-owned nuclear waste management organization with both interim storage and deep geological repository mandates (Forsmark).
• NAGRA: Swiss cooperative responsible for disposal of radioactive waste in Switzerland, focused on deep geological repository siting and construction. Direct peer to JAVYS in repository development and national radioactive waste program delivery, with comparable state-backed mandate.
• Posiva Oy: Finnish company (owned by TVO and Fortum) developing the world's first deep geological repository for spent nuclear fuel (Onkalo). Direct peer to JAVYS in spent fuel disposal and repository engineering, with comparable technology and regulatory environment.
• Studsvik: Swedish nuclear services company providing decommissioning, waste management, and consulting services to nuclear operators globally. Direct peer to JAVYS in commercial nuclear decommissioning services and technical consulting, with international consulting optionality.
• Holtec International: US-based company specializing in spent fuel storage technologies (HI-STORM casks) and decommissioning services. Direct peer to JAVYS in spent fuel interim storage technology (analogous to JAVYS's MSVP with KZ-48 and T-13 containers), serving similar nuclear utility customers.

Broad incumbents

• Veolia Nuclear Solutions: Subsidiary of Veolia providing decommissioning, waste management, and site remediation services to the global nuclear industry. Broad incumbent offering overlapping services to JAVYS in decommissioning and radioactive waste processing, but as part of a much larger environmental services portfolio.
• Sellafield Ltd: UK government-owned company responsible for decommissioning the Sellafield nuclear site, the most complex nuclear cleanup in Europe. Broad incumbent peer to JAVYS in legacy nuclear site decommissioning and radioactive waste management, with similar long-tail state-funded mandate.

Regional players

• ČEZ Group: Czech state-controlled nuclear operator and JAVYS's strategic partner for the New Nuclear Source project. Regional peer in the Central European nuclear ecosystem, comparable customer of nuclear services and aligned interest in regional nuclear infrastructure development.
• ÚJV Řež: Czech nuclear research and engineering organization providing decommissioning, waste management, and R&D services to Central European nuclear operators. Regional peer to JAVYS in nuclear decommissioning services and Central European nuclear sector expertise.

Market position

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/javys-a-s

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

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 JAVYS, a. s.