Nuklearna elektrarna Krško

What Nuklearna elektrarna Krško does

Nuklearna elektrarna Krško (NEK) is a single-unit nuclear power plant located in Krško, Slovenia, that has generated electricity commercially since 1983 using a Westinghouse pressurized water reactor (PWR) of approximately 700 MWe gross capacity. The plant operates a three-circuit system — primary (reactor, fuel, control rods, steam generators), secondary (turbines, generator, condenser, transformer), and tertiary (Sava River cooling with cooling towers and a dam) — producing an average of 5.7 TWh of electricity annually, equivalent to roughly 20% of Slovenia's and 16–20% of Croatia's total electricity consumption. NEK supplies baseload electricity sufficient for approximately 1.5 million Slovenian and Croatian households, with zero direct CO2 emissions from generation and a capacity factor approaching 100%.

The facility is jointly owned by the Republic of Slovenia and the Republic of Croatia through an intergovernmental agreement, with governance executed via the Interstate NEK Commission. NEK sells 100% of its output wholesale to the two national grid operators — ELES in Slovenia and HROTE in Croatia — and operates as regulated critical national infrastructure rather than a commercial electricity retailer. The business is sustained by an extended 60-year operating license (originally 40 years, extended in December 2022), international peer reviews by WANO and IAEA, and a continuous modernization program that has executed over 1,000 upgrades since commissioning.

Revenue is not publicly disclosed but is functionally derived from bilateral long-term offtake arrangements with the two state-owned grid operators, with pricing set under national energy regulation in Slovenia and Croatia. NEK employs more than 600 people at the Krško site, including nuclear-qualified operations, maintenance, radiological protection, engineering, and training staff supported by a full-scale control room replica simulator operational since 2000. Strategic posture is anchored on safe long-term operation through 2043, with the former CEO publicly referencing the JEK 2 second-unit project as a potential future expansion.

Name

Nuklearna elektrarna Krško

Legal name

Nuklearna elektrarna Krško, d. o. o.

Website

https://nek.si

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Nuklearna elektrarna Krško is Slovenia's sole nuclear power plant, operating a single Westinghouse pressurized water reactor at Krško since 1983 and jointly owned by Slovenia and Croatia. It generates approximately 5.7 TWh annually, supplying around 20% of both countries' electricity consumption through their state grid operators.

Ownership category

akta.pro rank

Product category

Nuclear Power Generation

NAICS

Nuclear Electric Power Generation (221113)

SIC

Electric Services (4911)

akta.pro primary industry

Chemistry, Water Treatment & Radiochemistry (Primary/Secondary Chemistry, Sampling) (EUAKABAG)

Keywords

• Nuclear power generation
• Baseload electricity supply
• Pressurized water reactor
• Low-carbon electricity
• Nuclear fuel cycle

Headquarters

HQ city

Krsko

HQ country

Slovenia

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Electricity Generation and Sales: NEK generates electricity through nuclear fission and sells the produced electricity to the electrical grid. As a baseload power plant, it provides continuous, stable electricity supply covering approximately 20% of Slovenia's and 20% of Croatia's electricity consumption. The plant has operated reliably since 1983.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels6 records

Core offering

Nuklearna elektrarna Krško (NEK) generates electricity through nuclear fission using a pressurized water reactor and sells baseload electricity directly to the Slovenian and Croatian national grid operators. The plant operates a three-circuit energy system producing an average of 5.7 TWh of low-carbon electricity annually, covering approximately 20% of Slovenia's and 16% of Croatia's total electricity consumption. Electricity is supplied continuously 24/7 regardless of weather conditions, with the plant licensed to operate for 60 years following an extension approved in 2022.

Product overview

Nuklearna elektrarna Krško (NEK) is a nuclear power plant that generates electricity using nuclear fission technology. The plant operates as a single-purpose facility producing electrical energy for the Slovenian and Croatian power grids. NEK does not offer commercial software products or services — its core offering is nuclear electricity generation. The facility operates three energy circuits (primary/secondary/tertiary) for heat exchange and electricity production, and provides operational reports, public information, and educational content about nuclear energy through its website.

Differentiator

Problem solved

Functional benefit

Products and services

• Baseload Nuclear Electricity Supply
• Grid System Services (Ancillary Services)

Quantifiable outcome

• Covers 20% of Slovenia's total electricity consumption
• +7 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered minor and core.

• Contractors and External Service Providers (1500+ participants during outages)minorImplementation/ SI/ Consulting Partner · 1 January 2025During refueling outages, more than 1500 external contractors work alongside NEK staff on maintenance, upgrades, and modernization activities. The autumn 2025 outage included 16 major maintenance activities and 20 modernization projects with over 30,000 individual work activities.
• Slovenian Government (Republic of Slovenia)coreStrategic or Co-development PartnerThe Republic of Slovenia holds ownership stake in NEK as a critical national infrastructure facility. The Slovenian government, through its ministries, provides regulatory oversight, approves operational life extensions, and oversees nuclear safety compliance through the Nuclear Safety Administration (URSJV).
• Croatian Government (Republic of Croatia)coreStrategic or Co-development PartnerCroatia is a co-owner of NEK through an intergovernmental agreement between Slovenia and Croatia. This unique binational arrangement includes the Intergovernmental NEK Commission for joint governance and decision-making. Croatia receives approximately 20% of its electricity consumption from NEK.
• World Association of Nuclear Operators (WANO)coreStrategic or Co-development PartnerNEK participates in WANO peer review programs, sharing operational experience with nuclear plants worldwide and receiving international assessments of operational excellence. WANO visits confirm NEK meets highest industrial standards.
• International Atomic Energy Agency (IAEA)coreStrategic or Co-development PartnerNEK undergoes regular IAEA safety reviews and missions including the Safety Aspects of Long-Term Operation (SALTO) program. IAEA provides independent international verification of nuclear safety standards compliance.
• Slovenian Nuclear Safety Administration (URSJV)coreStrategic or Co-development PartnerURSJV is the national regulatory authority overseeing nuclear and radiation safety in Slovenia. They conduct regular safety inspections, approve operational procedures, and ensure compliance with nuclear safety regulations including the Nuclear and Radiation Safety Act.

Scale indicators10 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Mochovce Nuclear Power Plant: Mochovce is a two-unit VVER-440 plant in Slovakia, with new units still being commissioned. Directly comparable to NEK in reactor type, regional context, and national baseload role within a similar Central European regulatory regime.
• Gösgen Nuclear Power Plant: Gösgen is a single-unit PWR in Switzerland, closely matching NEK's single-unit pressurized water reactor profile and small-scale national baseload role. Comparable in technology, scale, and emphasis on long-term safe operation.
• Loviisa Nuclear Power Plant: Loviisa is a two-unit VVER-440 plant in Finland operated by Fortum, contributing a significant share of Finland's low-carbon baseload. Comparable to NEK as a small-scale Nordic/Baltic-region nuclear asset with similar age profile and life-extension trajectory.
• Slovenské elektrárne: Slovenské elektrárne operates the Bohunice and Mochovce nuclear power plants in Slovakia, supplying the bulk of the country's low-carbon baseload. Comparable to NEK as a national nuclear operator in a neighboring Central European country with similar VVER-based fleet and regulatory framework.
• Dukovany Nuclear Power Plant: Dukovany operates four VVER-440 reactors and supplies approximately 20% of the Czech Republic's electricity. Comparable to NEK as a multi-unit VVER-era baseload plant serving a Central European national grid with similar regulatory and political environment.
• Paks Nuclear Power Plant: Paks is Hungary's sole nuclear power plant, operating four VVER-440 reactors that supply roughly half of Hungary's electricity. Like NEK, it is a single-country baseload nuclear asset of strategic national importance with multi-decade operating history — directly comparable in mission, scale, and regulatory profile.
• Bohunice Nuclear Power Plant: Bohunice V2 is a two-unit VVER-440 plant in Slovakia, comparable in reactor technology, scale, and operational era to NEK. Like NEK, it serves as a national baseload asset with a long operating history and life-extension focus.

Broad incumbents

• ČEZ Group: ČEZ operates the Dukovany and Temelín nuclear power plants in the Czech Republic alongside a broad conventional generation portfolio. Comparable to NEK as a Central European integrated utility with nuclear as a core low-carbon pillar.
• Fortum: Fortum operates the Loviisa nuclear plant in Finland and holds broader Nordic hydro and thermal generation. Comparable to NEK as a regional incumbent nuclear operator with life-extension experience on VVER-era assets.
• EDF (Électricité de France): EDF operates the world's second-largest nuclear fleet in France and provides global nuclear services. Comparable to NEK as a leading nuclear operator with deep operational, regulatory, and engineering expertise relevant to long-term operation and life extension.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/nuclear-power-plant-krsko-slovenia

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 Nuklearna elektrarna Krško