# Top 30 energy companies in the Czech Republic
Tamtam tracks 30 energy companies headquartered in the Czech Republic. This list ranks all of them by number of employees on LinkedIn, led by ExxonMobil, ČEZ and ORLEN Unipetrol. Their median headcount is 446. Half of them were founded in 1993 or later. The most common headquarters are Prague (16).
The energy sector in the Czech Republic is characterized by a mix of large, established companies and mid-sized firms, with a strong presence in oil and gas, electric power generation, and specialized manufacturing. ExxonMobil, a global player, focuses on pioneering research and emissions reduction. ČEZ is a major energy group in Central and Southeastern Europe, while ORLEN Unipetrol is a leading refinery and petrochemical group.
A notable pattern is the concentration of headquarters in Prague, with nine of the listed companies based there. This includes innogy Česká republika, which supplies natural gas, electricity, and heat, and ComAp Group, a provider of smart power control solutions. Doosan Škoda Power, founded in 1859, designs and manufactures turbo-generator systems.
🇨🇿 Czech Republic · 30 companies · Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [ExxonMobil](https://www.tamtam.ai/c/exxonmobil) (corporate.exxonmobil.com)
Scientists and engineers pioneering research, pursuing new technologies to reduce emissions, creating efficient fuels, meeting global energy needs, aiming net-zero emissions by 2050. | Oil and Gas | 🇨🇿 | 73,163 | |
| 2 | [ČEZ](https://www.tamtam.ai/c/cez) (cez.cz)
A strong energy group operating in Central and Southeastern Europe and Turkey, focusing on electricity, heat, natural gas, and coal production, distribution, and sales | Electric Power Generation | 🇨🇿 Prague | 5,944 | 1992 |
| 3 | [ORLEN Unipetrol](https://www.tamtam.ai/c/orlen-unipetrol) (orlenunipetrol.cz)
A leading refinery and petrochemical group in the Czech Republic and Central/Eastern Europe, with a focus on downstream production and retail fuel distribution | Oil and Gas | 🇨🇿 Prague | 1,182 | 1994 |
| 4 | [innogy Česká republika](https://www.tamtam.ai/c/innogy-ceska-republika) (innogy.cz)
The company focuses on supplying natural gas, electricity, and heat to customers, as well as combined heat and power generation and solutions for clean mobility | Oil and Gas | 🇨🇿 Prague | 887 | |
| 5 | [ComAp Group](https://www.tamtam.ai/c/comap-group) (comap-control.com)
Provider of smart power control solutions and services for independent and backup power generation markets, with a focus on flexibility, scalability, and sustainability | Appliances, Electrical, and Electronics Manufacturing | 🇨🇿 Prague | 633 | 1991 |
| 6 | [VITKOVICE](https://www.tamtam.ai/c/vitkovice) (vitkovice.cz)
A leading Czech engineering group with diverse machinery production, large investment assemblies, green technology, and information technology services | Machinery Manufacturing | 🇨🇿 Ostrava | 548 | 1828 |
| 7 | [NIK](https://www.tamtam.ai/c/nik) (nik-global.com)
A leading manufacturer in Eastern Europe producing energy metering devices, automatic meter reading systems, electrical equipment, and providing substation design and modernization services | Appliances, Electrical, and Electronics Manufacturing | 🇨🇿 Prague | 527 | |
| 8 | [Doosan Škoda Power](https://www.tamtam.ai/c/doosan-skoda-power) (doosanskodapower.com)
Designing and manufacturing efficient and reliable turbo-generator systems for power generation and industrial applications worldwide, with a focus on steam turbine technology | Oil and Gas | 🇨🇿 Plzeň | 520 | 1859 |
| 9 | [ENERGO-PRO](https://www.tamtam.ai/c/energo-pro) (energo-pro.com)
A hydropower company operating plants in multiple countries, with a focus on power generation, distribution grids, equipment supply, and environmental responsibility | Utilities | 🇨🇿 Prague | 517 | 1994 |
| 10 | [ČEPS, a.s.](https://www.tamtam.ai/c/ceps-a-s) (ceps.cz)
The sole Czech Transmission System Operator responsible for maintaining and upgrading substations, managing electricity supply, organizing power exchanges, and supporting electricity market liberalization in Europe | Oil and Gas | 🇨🇿 Prague | 497 | 1998 |
| 11 | [OKD, a.s.](https://www.tamtam.ai/c/okd-a-s) (okd.cz)
The company is the sole producer of black coal in the Czech Republic, extracting, processing, and selling low-sulfur coal for various industries | Mining | 🇨🇿 Stonava | 490 | 1952 |
| 12 | [MTX Group a.s.](https://www.tamtam.ai/c/mtx-group-a-s) (mtxgroup.cz)
MTX Group is a significant industrial, commercial, and manufacturing holding company in the Czech Republic, focusing on managing, financing, and coordinating its subsidiaries | International Trade and Development | 🇨🇿 Prague | 490 | |
| 13 | [GasNet CZ](https://www.tamtam.ai/c/gasnet-cz) (gasnet.cz)
GasNet is preparing the Czech Republic for hydrogen by managing the largest gas distribution system They focus on safety, reliability, and respect, seeking professionals to join their team | Oil and Gas | 🇨🇿 Prague | 461 | |
| 14 | [ÚJV Řež, a. s. (Nuclear Research Institute Rez plc)](https://www.tamtam.ai/c/ujv-rez-a-s-nuclear-research-institute-rez-plc) (ujv.cz)
Specializing in safe energy solutions, ÚJV Řež offers technical services, research, and infrastructure for nuclear energy, industry, and medicine through its subsidiaries | Energy Technology | 🇨🇿 Husinec-Řež | 460 | 1955 |
| 15 | [BIDLI](https://www.tamtam.ai/c/bidli) (bidli.cz)
A company simplifying the journey to finding a dream home by combining real estate, financing, and house building expertise | Financial Services | 🇨🇿 Prague | 446 | 2018 |
| 16 | [Pražská energetika, a. s. (PRE)](https://www.tamtam.ai/c/prazska-energetika-a-s-pre) (pre.cz)
A leading energy group in the Czech Republic, specializing in electricity and gas sales, distribution, production, and energy services with a focus on innovation and energy efficiency | Electric Power Transmission, Control, and Distribution | 🇨🇿 Prague | 440 | 1897 |
| 17 | [EG.D](https://www.tamtam.ai/c/eg-d) (egd.cz)
The company operates and owns electrical and gas distribution systems in southern Czech Republic, providing services and collaborating with market participants | Electric Power Transmission, Control, and Distribution | 🇨🇿 Brno | 375 | |
| 18 | [E.ON CZ](https://www.tamtam.ai/c/e-on-cz) (eon.cz)
Leading integrated energy company supplying electricity and gas, focusing on renewable sources, infrastructure development, and innovative energy solutions in Czech Republic. | Utilities | 🇨🇿 České Budějovice 7 | 372 | 2004 |
| 19 | [Second Foundation](https://www.tamtam.ai/c/second-foundation) (second-foundation.eu)
A tech company merging science and economics to develop market-beating trading strategies using mathematical models and advanced technology No clients, only internal innovation | Services for Renewable Energy | 🇨🇿 Prague | 365 | |
| 20 | [ŠKODA JS](https://www.tamtam.ai/c/skoda-js) (skoda-js.cz)
A long-standing supplier of nuclear energy technologies, specializing in engineering, component manufacturing, and service for nuclear power plants worldwide | Industrial Machinery Manufacturing | 🇨🇿 Bolevec | 352 | 1956 |
| 21 | [PBS GROUP a.s.](https://www.tamtam.ai/c/pbs-group-a-s) (pbs.cz)
A global engineering company group specializing in aerospace, power engineering, investment casting, and cryogenics, with a focus on innovation and quality | Aviation and Aerospace Component Manufacturing | 🇨🇿 Prague | 320 | |
| 22 | [Centrum výzkumu Řež / Research Centre Řež](https://www.tamtam.ai/c/centrum-vyzkumu-rez-research-centre-rez) (cvrez.cz)
Research Centre Řež specializes in research, development, and innovation for the power generation industry, particularly in nuclear power, with cutting-edge technologies and international collaborations | Research Services | 🇨🇿 Husinec | 233 | |
| 23 | [Photomate](https://www.tamtam.ai/c/photomate) (photomate.eu)
Authorized distributor for Huawei solar inverters in Middle and Eastern Europe, offering fast delivery, experienced engineers, multilingual support, and technical assistance | Solar Electric Power Generation | 🇨🇿 České Budějovice - České Budějovice 6 | 195 | 2008 |
| 24 | [JRD](https://www.tamtam.ai/c/jrd) (jrd.cz)
The company specializes in sustainable development, including residential projects and renewable energy, with a focus on environmentally-friendly construction and waste processing technologies | Real Estate | 🇨🇿 Prague | 183 | 2003 |
| 25 | [OMEXOM GA Energo s.r.o.](https://www.tamtam.ai/c/omexom-ga-energo-s-r-o) (gaenergo.cz)
Power networks, Smart City Polygon, comprehensive solutions for power generation, distribution, transformation, and smart technologies for cities. | Electric Power Transmission, Control, and Distribution | 🇨🇿 Plzeň | 104 | 1993 |
| 26 | [Pražská teplárenská by Veolia](https://www.tamtam.ai/c/prazska-teplarenska-by-veolia) (ptas.cz)
A leading thermal energy provider in the Czech Republic, specializing in heat and electricity production through cogeneration for residential and industrial clients in Prague | Oil and Gas | 🇨🇿 Prague | 101 | 1992 |
| 27 | [Bonett Group](https://www.tamtam.ai/c/bonett-group) (bonett.cz)
Experienced partner in sales and investment of alternative fuel technologies, specializing in bioCNG, LNG, H2, biomethane, and LPG products Operating in Central Europe | Oil and Gas | 🇨🇿 Klecany | 24 | 1997 |
| 28 | [PREOL, a.s.](https://www.tamtam.ai/c/preol-a-s) (preol.cz)
Processing rapeseed seeds into refined oil, biodiesel, and glycerin using modern technology combined with sustainability principles. | Chemical Manufacturing | 🇨🇿 Lovosice | 11 | |
| 29 | [OlifeEnergy](https://www.tamtam.ai/c/olifeenergy) (olife-energy.com)
A Czech tech company specializing in developing and manufacturing AC/DC charging stations for electric vehicles | Software Development | 🇨🇿 Prague | 11 | |
| 30 | [EV Expert s.r.o.](https://www.tamtam.ai/c/ev-expert-s-r-o) (evexpert.eu)
The company is a technological and trading company specializing in Electric Vehicles and energy flow, manufacturing premium AC charging stations They aim for a better world through their products | Appliances, Electrical, and Electronics Manufacturing | 🇨🇿 Olomouc | 7 | 2016 |
## How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
## More company lists in the Czech Republic
- [The largest companies in the Czech Republic](https://www.tamtam.ai/l/largest-companies-czech-republic) (858)
- [Multinational companies in the Czech Republic](https://www.tamtam.ai/l/multinational-companies-czech-republic) (258)
- [Manufacturers in the Czech Republic](https://www.tamtam.ai/l/manufacturers-czech-republic) (100)
- [Companies with in-house R&D in the Czech Republic](https://www.tamtam.ai/l/r-and-d-companies-czech-republic) (99)
- [Critical infrastructure operators in the Czech Republic](https://www.tamtam.ai/l/critical-infrastructure-operators-czech-republic) (85)
- [Financial services firms in the Czech Republic](https://www.tamtam.ai/l/financial-services-firms-czech-republic) (79)
- [Retail chains in the Czech Republic](https://www.tamtam.ai/l/retail-chains-czech-republic) (79)
- [Public sector organisations in the Czech Republic](https://www.tamtam.ai/l/public-sector-organisations-czech-republic) (78)
- [Companies with a mobile app in the Czech Republic](https://www.tamtam.ai/l/companies-with-mobile-app-czech-republic) (68)
- [Hardware manufacturers in the Czech Republic](https://www.tamtam.ai/l/hardware-companies-czech-republic) (67)
- [Financial Services companies in the Czech Republic](https://www.tamtam.ai/l/financial-services-companies-czech-republic) (59)
- [IT Services and IT Consulting companies in the Czech Republic](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-czech-republic) (57)
- [Corporate groups and holding companies in the Czech Republic](https://www.tamtam.ai/l/holding-companies-czech-republic) (55)
- [E-commerce companies in the Czech Republic](https://www.tamtam.ai/l/ecommerce-companies-czech-republic) (53)
- [Software Development companies in the Czech Republic](https://www.tamtam.ai/l/software-development-companies-czech-republic) (52)
- [Education providers in the Czech Republic](https://www.tamtam.ai/l/education-companies-czech-republic) (47)
- [IT services companies in the Czech Republic](https://www.tamtam.ai/l/it-services-companies-czech-republic) (45)
- [SaaS companies in the Czech Republic](https://www.tamtam.ai/l/saas-companies-czech-republic) (44)
- [Research institutes in the Czech Republic](https://www.tamtam.ai/l/research-institutes-czech-republic) (41)
- [Professional services firms in the Czech Republic](https://www.tamtam.ai/l/professional-services-firms-czech-republic) (35)
- [Higher Education companies in the Czech Republic](https://www.tamtam.ai/l/higher-education-companies-czech-republic) (34)
- [Distributors and wholesalers in the Czech Republic](https://www.tamtam.ai/l/distributors-and-wholesalers-czech-republic) (34)
- [Motor Vehicle Manufacturing companies in the Czech Republic](https://www.tamtam.ai/l/motor-vehicle-manufacturing-companies-czech-republic) (33)
- [Aerospace and defence companies in the Czech Republic](https://www.tamtam.ai/l/aerospace-and-defense-companies-czech-republic) (31)
## The same list elsewhere
- [Energy companies in the world](https://www.tamtam.ai/l/energy-companies-in-the-world) (10,502)
- [Energy companies in Europe](https://www.tamtam.ai/l/energy-companies-in-europe) (4,235)
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Source: https://www.tamtam.ai/l/energy-companies-czech-republic