What Slovenské Elektrárne does

Slovenské Elektrárne, a.s. is Slovakia's largest electricity producer and one of the largest in Central Europe, operating 4,132 MWe of installed capacity across 31 hydroelectric plants, two nuclear sites (Bohunice and Mochovce using Soviet-designed VVER-440 pressurized water reactors), two photovoltaic plants, and battery energy storage. The company generated 21.0 TWh of electricity in 2025 (net supply of 18.8 TWh), with 100% produced without direct CO2 emissions following the definitive shutdown of coal plants at Nováky (2023) and Vojany (2024). Beyond baseload generation, it produces 547 GWh of district heat annually from the Bohunice nuclear plant, provides ancillary grid-stabilization services, and — via its wholly owned subsidiary Slovenské elektrárne – energetické služby (formerly SE Predaj) — distributes electricity and gas directly to small and medium enterprises in Slovakia, the Czech Republic, and Poland.

The business model is anchored in regulated and contracted wholesale supply to the Slovak national electricity grid, with retail/B2B distribution handled by SEES and heat sold into the Bohunice district heating network. Go-to-market is direct-to-grid wholesale with regulated pricing overseen by ÚRSO (Regulatory Office for Network Industries), supplemented by regulated heat tariffs and ancillary service bids. Revenue streams therefore span electricity generation and sales, heat production and sales, ancillary grid services, and SME energy supply. Capital intensity is high: nuclear licensing and 40+ year construction cycles, fuel-cycle integration with state-owned JAVYS for spent fuel storage, and reliance on EU/international capital markets — demonstrated by the November 2025 debut €750M green bond under a €2B EMTN programme.

Ownership is privately held: 66% by Slovak Power Holding B.V. (100% controlled by Czech energy group Energetický a průmyslový holding (EPH) since its May 2025 buyout of Enel's stake), and 34% by the Slovak Republic. The company runs approximately 6,500 employees and is completing the long-gestation Mochovce 3 & 4 project (Units 3 synchronized 2023, Unit 4 criticality January 2026, fuel load June 2026), which is projected to raise Slovakia's nuclear share of power supply to 77.5% — Europe's highest.

Name

Slovenské Elektrárne

Legal name

Slovenské Elektrárne, a.s.

Website

https://seas.sk

Company type

Private

Founded year

1942

Operating status

Operating

Headcount range

1,001–5,000 employees

Ownership category

akta.pro rank

Headquarters

HQ city

Bratislava

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Electricity Generation and Sales: Core business activity: generation and sale of electricity from nuclear, hydro, and photovoltaic power plants to the Slovak national electricity grid. In 2025, the company produced 21.0 TWh of electricity with net supply of 18.8 TWh. As of end of 2024, after decommissioning coal plants, 100% of electricity is produced without direct CO2 emissions from nuclear and hydro sources.
2. Heat Production and Sales: Production and sale of thermal energy from the nuclear power plant in Jaslovské Bohunice. In 2025, the company produced and supplied heat totaling 1,969,200 GJ (547 GWh), with 100% sourced from nuclear fuel without direct CO2 emissions.
3. Ancillary Services for Electrical Grid: Provision of support services for the electrical power system, including grid stabilization and balancing services required for reliable electricity transmission.
4. Energy Services Distribution (via subsidiary): Through 100% subsidiary Slovenské elektrárne – energetické služby, the company sells electricity and gas directly to small and medium enterprises in Slovakia, Czech Republic, and Poland, expanding the business to end customers since 2009.
5. Green Bond Financing: In November 2025, the company launched a €2 billion EMTN programme and issued its first international green bond of €750 million for seven years at 3.875% coupon rate to finance eligible green projects under the Green Finance Framework.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels8 records

Core offering

Slovenské Elektrárne is Slovakia's largest electricity producer, generating electricity from nuclear (VVER-440 reactors at Bohunice and Mochovce), hydroelectric (31 plants), and photovoltaic power plants. The company also produces heat from the Bohunice nuclear plant for district heating, provides ancillary services for grid stability, and distributes electricity and gas directly to SMEs through its subsidiary Slovenské elektrárne – energetické služby in Slovakia, Czech Republic, and Poland.

Product overview

Slovenské Elektrárne, a.s. is Slovakia's largest electricity producer and one of the largest in Central Europe, operating a diversified portfolio of power generation assets. The company's core products include nuclear power generation (operating VVER-440 reactors at Mochovce and Bohunice nuclear plants), hydroelectric power (31 hydro plants), photovoltaic generation, and battery energy storage systems (BESS). The company also produces heat from its nuclear facilities and provides ancillary services for grid stability. The portfolio generates 21.0 TWh annually with 100% of electricity produced without direct CO2 emissions. The company also operates a subsidiary, Slovenské elektrárne – energetické služby (SEES), which sells electricity and gas to end customers, and manages industrial real estate from former coal power plant sites.

Differentiator

Problem solved

Functional benefit

Brands

• Energoland: Visitor center and educational facility related to energy production
• Energetické služby

Products and services

• Nuclear Power Generation (Jadrová energetika) Generation of electricity through nuclear fission using VVER-440 pressurized water reactors at the Mochovce (four units) and Bohunice (units 3-4 operational) nuclear power plants. Provides baseload electricity to the Slovak national grid.
• Hydroelectric Power Generation (Vodná energetika) Renewable electricity generation from 31 hydroelectric power plants with total capacity exceeding 1,600 MW, contributing to the company's diversified low-carbon portfolio.
• Photovoltaic Power Generation (Fotovoltická energetika) Solar electricity generation from two photovoltaic power plants operated as part of the company's renewable energy portfolio.
• Battery Energy Storage System (BESS) Large-scale battery storage systems providing grid flexibility and energy accumulation, including the 36 MW/72 MWh BESS Nováky (largest in Slovakia) and 4 MWh BESS Dobšiná.
• Heat Production (Výroba tepla) Production and sale of heat from the Bohunice nuclear power plant for district heating. Total supplied 1,969,200 GJ (547 GWh) in 2025, with 100% of heat originating from nuclear fuel without direct CO2 emissions.
• Grid Balancing and Ancillary Services Support services for the Slovak electricity grid including frequency regulation, grid stabilization, and balancing services required for reliable electricity transmission.
• Energy Distribution Services (Slovenské elektrárne – energetické služby) Through 100% subsidiary Slovenské elektrárne – energetické služby, the company distributes electricity and gas directly to small and medium enterprises in Slovakia, Czech Republic, and Poland, with an organizational branch in Poland.
• Industrial Parks and Secondary Energy Products Sale of surplus property including industrial parks at the former Nováky and Vojany coal power plant sites, and secondary energy products such as chemical processing sludges from nuclear plants.

Quantifiable outcome

• 100% electricity without direct CO2 emissions from 2024 onwards
• +4 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Seven partnerships are on record, tiered minor and core.

• Alcemi (UK Battery Storage Developer)minorStrategic or Co-development Partner · 30 July 2026London-headquartered BESS developer Alcemi partnered with local Romanian developers Emil Pop and Andrei Pop to acquire majority stakes in two Romanian battery storage projects (575MW/2,300MWh total). This is mentioned alongside news about Slovenské Elektrárne's own BESS commissioning but does not directly involve the company.
• Úrad jadrového dozoru SR (ÚJD SR / Nuclear Regulatory Authority)coreOthersState regulatory body responsible for nuclear safety oversight of all nuclear facilities in Slovakia. Ensures nuclear energy is used exclusively for peaceful purposes and that Slovak nuclear facilities are designed, built, operated, and decommissioned in compliance with applicable legislation.
• WANO (World Association of Nuclear Operators)coreStrategic or Co-development PartnerInternational organization of nuclear power plant operators dedicated to improving safety and reliability worldwide. Slovenské Elektrárne is a member and regularly hosts WANO missions for peer reviews of nuclear safety at its facilities.
• IAEA (International Atomic Energy Agency)coreStrategic or Co-development PartnerUN agency establishing international safety standards for peaceful nuclear energy use. Conducts OSART (Operational Safety Review Team) missions to assess nuclear plant safety. Slovenské Elektrárne participates in these peer review programs.
• Nuclear Oversight (NOS) / Nuclear Safety Advisory Committee (NSAC)coreStrategic or Co-development PartnerIndependent nuclear safety assessment body within Slovenské Elektrárne, evaluating operational safety against WANO criteria. NSAC includes international experts (Paul Newman-UK chair, Jaroslav Holubec-SK, Harri Tuomisto-Finland, Rafael Martín Lopéz-Spain, John Munro-UK, Bohdan Zronek-Czech Republic) reporting directly to the Board.
• JAVYS, a.s. (Jadrové a vyraďovacie spoločnosti)coreOthersState-owned company operating Slovakia's spent nuclear fuel storage facility at Bohunice. All spent fuel from Slovak nuclear plants is stored at JAVYS facilities in water-filled pools.
• FEIT UNIZA (Faculty of Electrical Engineering and Information Technology, University of Žilina)minorStrategic or Co-development PartnerUniversity partnership for student talent development. Slovenské Elektrárne signed a memorandum with FEIT UNIZA in June 2026 to expand cooperation as interest in energy sector careers grows.

Scale indicators8 records

Recent moves15 records

Expansion highlights6 records

Direct peers

• ČEZ Group: Czech Republic's dominant vertically integrated utility, operating the Dukovany and Temelín nuclear plants alongside hydro and renewables. Highly comparable as a Central European state-influenced nuclear-and-hydro-heavy generator with regulated and merchant exposure.
• MVM Group: Hungarian state-controlled energy group with nuclear generation at Paks and a similar diversified portfolio across generation, heat, and retail. Comparable as a neighboring CEE nuclear operator with state minority influence and district heating from nuclear.
• PGE Group: Poland's largest power producer, with a generation mix spanning coal, hydro, wind, and the planned first Polish nuclear plant. Comparable as the dominant state-influenced generator in a neighboring CEE market with a coal-to-clean transition underway.
• Fortum: Nordic energy group operating nuclear (OL1/OL2/OL3 in Finland), hydro, and CHP generation across the Nordic and Baltic region. Comparable as a nuclear + hydro + district heat operator with state shareholder and regulated pricing structures.

Broad incumbents

• Energetický a průmyslový holding (EPH): Parent company of SEAS (controls 66% via SPH) and one of the largest Central European energy groups across coal, gas, nuclear, and renewables in Czech Republic, Slovakia, Germany, Italy, and the UK. Comparable as an owner-operator of SEAS and as a broader CEE energy platform with overlapping asset categories.
• Enel: Previous majority owner of SEAS (sold final stake to EPH in May 2025). Comparable as a major European utility with significant nuclear, hydro, and renewables exposure and a history of operating CEE nuclear assets through SEAS.
• EDF (Électricité de France): World's largest nuclear operator with 56+ reactors in France plus international operations. Comparable as a pure-play nuclear-heavy utility with similar regulatory safety culture, fleet management approach, and government co-ownership.
• Vattenfall: Swedish state-owned utility with nuclear (Forsmark, Ringhals), extensive hydro, and district heating operations across the Nordics, Germany, Netherlands, and UK. Comparable as a state-owned nuclear-hydro-heat utility with similar baseload-plus-flexibility model.
• RWE: German-headquartered European utility with nuclear legacy assets being phased out and significant growth in renewables and flexible generation. Comparable as a large European generator navigating the nuclear-to-renewables transition with grid-scale flexibility investments.

Emerging players

• PKN Orlen: Polish energy group integrating refining with power generation, including planned SMR and large-scale nuclear projects. Comparable as a CEE-based energy company building a nuclear, renewables, and retail platform across the same geographic corridor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/Elektrarne
• YouTubeyoutube.com/channel/seassk
• Facebookfacebook.com/SlovenskeElektrarne
• LinkedInlinkedin.com/company/slovenske-elektrarne
• Instagraminstagram.com/seas_sk

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries2 records

Funding overview

Funding rounds1 record

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 Slovenské Elektrárne