# The 50 largest energy companies in South Holland

Tamtam tracks 54 energy companies headquartered in South Holland. This list ranks the 50 largest by number of employees on LinkedIn, led by Stedin, Vopak and Heerema Marine Contractors. Their median headcount is 363. Half of them were founded in 1995 or later. The most common headquarters are Rotterdam (19), Schiedam (5) and The Hague (4).

These companies in South Holland are primarily involved in the energy sector, ranging from utilities and oil and gas to renewable energy services and industrial machinery manufacturing. The list features a mix of well-established large corporations and mid-sized firms, indicating a mature and diversified energy landscape in the region. Many of these companies have a long history, with several founded in the late 19th or early 20th century, such as Stedin (1886) and Vopak (1616).

Among the companies are Stedin, providing reliable energy through networks, and Vopak, a global provider of storage and infrastructure solutions for energy products. Eneco focuses on accelerating sustainability initiatives, while Heerema Marine Contractors specializes in offshore energy projects. A common pattern observed is the strong concentration of headquarters in Rotterdam, highlighting its significance as a hub for energy and maritime industries.

🇳🇱 South Holland · 50 companies · Updated Nov 14, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Stedin](https://www.tamtam.ai/c/stedin) (stedin.net)<br>Providing reliable energy through networks, transitioning to clean energy sources for a sustainable future, and fostering collaboration for a world full of new energy | Utilities | 🇳🇱 Rotterdam | 5,578 | 1886 |
| 2 | [Vopak](https://www.tamtam.ai/c/vopak) (vopak.com)<br>Global provider of storage and infrastructure solutions for energy products, chemicals, and edible oils, supporting global supply chains and driving progress towards a sustainable future | Transportation, Logistics, Supply Chain and Storage | 🇳🇱 3016 CK Rotterdam | 4,169 | 1616 |
| 3 | [Heerema Marine Contractors](https://www.tamtam.ai/c/heerema-marine-contractors) (heerema.com)<br>A global marine contractor specializing in offshore energy projects, known for expertise and innovation within the industry | Engineering Services | 🇳🇱 Leiden | 3,796 |  |
| 4 | [ANWB](https://www.tamtam.ai/c/anwb) (anwb.nl)<br>A well-established organization with over 5 million members, offering a range of services from roadside assistance to travel planning, emphasizing social relevance and sustainability | Travel Arrangements | 🇳🇱 The Hague | 3,698 | 1883 |
| 5 | [Eneco](https://www.tamtam.ai/c/eneco) (eneco.nl)<br>The company focuses on accelerating sustainability initiatives to combat global warming and achieve climate neutrality by 2035, taking partners and customers along | Utilities | 🇳🇱 Rotterdam | 3,462 | 1995 |
| 6 | [Aramco Overseas Company](https://www.tamtam.ai/c/aramco-overseas-company) (aramcooverseas.com)<br>A global energy and chemicals leader with European offices driving innovation, research, and safe energy delivery worldwide for over 60 years | Oil and Gas | 🇳🇱 The Hague | 2,137 | 1948 |
| 7 | [Hertel](https://www.tamtam.ai/c/hertel) (altrad.com)<br>An international industrial services company providing access solutions, insulation, corrosion protection, mechanical, and specialist services to Oil and Gas, Energy, and Offshore industries worldwide | Oil and Gas | 🇳🇱 Rotterdam | 1,344 | 1895 |
| 8 | [Huisman](https://www.tamtam.ai/c/huisman) (huismanequipment.com)<br>Designs and manufactures heavy construction equipment for renewable energy, oil and gas, civil, naval, and entertainment industries, setting new industry standards since 1929 | Industrial Machinery Manufacturing | 🇳🇱 Schiedam | 1,280 | 1929 |
| 9 | [AVR](https://www.tamtam.ai/c/avr) (avr.nl)<br>The company specializes in processing various types of waste into energy and resources, striving for a cleaner, more sustainable world through innovation and practical solutions | Environmental Services | 🇳🇱 Rozenburg | 842 |  |
| 10 | [VTTI](https://www.tamtam.ai/c/vtti) (vtti.com)<br>Global leader in independent energy storage and infrastructure development, driving the transition to sustainable energy sources for a carbon-neutral future | Transportation, Logistics, Supply Chain and Storage | 🇳🇱 Rotterdam | 836 | 2006 |
| 11 | [Greenchoice](https://www.tamtam.ai/c/greenchoice) (greenchoice.nl)<br>Greenchoice provides 100% green energy and offset gas, encourages energy conservation and self-generation, and offers sustainable energy from sun, wind, water, and biomass | Utilities | 🇳🇱 Rotterdam | 753 | 2001 |
| 12 | [Zeppelin Power NL](https://www.tamtam.ai/c/zeppelin-power-nl) (zeppelinpower.com)<br>The company specializes in developing, supplying, and maintaining Caterpillar Power Systems to ensure continuity, profitability, and efficiency for professional customers | Industrial Machinery Manufacturing | 🇳🇱 Papendrecht | 589 |  |
| 13 | [Batenburg Techniek N.V.](https://www.tamtam.ai/c/batenburg-techniek-n-v) (batenburg.nl)<br>A technology company specializing in smart industry solutions, providing smart components, installations, and software for industries to become smarter, safer, and more sustainable | Mechanical Or Industrial Engineering | 🇳🇱 Rotterdam | 588 |  |
| 14 | [Joulz](https://www.tamtam.ai/c/joulz) (joulz.nl)<br>Innovative partner in the energy transition, offering solutions like solar power, energy storage, efficient infrastructure, and electric vehicle charging | Services for Renewable Energy | 🇳🇱 Zoetermeer | 544 | 2004 |
| 15 | [Anthony Veder](https://www.tamtam.ai/c/anthony-veder) (anthonyveder.com)<br>Specializing in gas transport, this company offers high-quality and flexible services for LPG, LNG, and petrochemical gases, pioneering innovative solutions in the maritime industry | Maritime Transportation | 🇳🇱 Rotterdam | 488 | 1937 |
| 16 | [Seaway Heavy Lifting](https://www.tamtam.ai/c/seaway-heavy-lifting) (seawayheavylifting.com)<br>A specialized partner in offshore wind farm projects, offering engineering, heavy lifting, cable installation, and integrated solutions using dedicated offshore construction vessels | Renewables & Environment | 🇳🇱 Zoetermeer | 445 | 1992 |
| 17 | [Ampelmann Operations](https://www.tamtam.ai/c/ampelmann-operations) (ampelmann.nl)<br>The leading offshore access provider delivering safe and efficient solutions to the global energy sector with a diverse portfolio of gangway systems | Services for Renewable Energy | 🇳🇱 Delft | 443 | 2007 |
| 18 | [bp Raffinaderij Rotterdam](https://www.tamtam.ai/c/bp-raffinaderij-rotterdam) (bp.com)<br>A major oil refinery in Europe, processing 400,000 barrels of crude oil daily to produce a variety of end products for fuel and petrochemical industries | Oil and Gas | 🇳🇱 Rotterdam Europoort | 441 |  |
| 19 | [KOTUG International](https://www.tamtam.ai/c/kotug-international) (kotug.com)<br>A leading international towage and maritime company providing vessel services, training, and consultancy with a focus on innovation and sustainability | Maritime Transportation | 🇳🇱 Rotterdam | 426 |  |
| 20 | [Advario](https://www.tamtam.ai/c/advario) (advario.com)<br>A global terminal storage company, focused on chemicals, gas, and new energy, committed to ESG, sustainability, and fostering transformational partnerships in the energy transition | Transportation, Logistics, Supply Chain and Storage | 🇳🇱 Rotterdam | 423 |  |
| 21 | [Jumbo Maritime](https://www.tamtam.ai/c/jumbo-maritime) (jumbomaritime.nl)<br>Global provider of innovative, safe, and efficient heavy lift, transport, and offshore installation solutions for various industries worldwide Customer-oriented with focus on quality and safety | Maritime Transportation | 🇳🇱 Schiedam | 395 | 1968 |
| 22 | [Acta Marine](https://www.tamtam.ai/c/acta-marine) (actamarine.com)<br>Providing maritime support with DP2 Walk-to-Work vessels, facilitating safe transfer of personnel and equipment for offshore construction projects since 1970. | Maritime Transportation | 🇳🇱 Rotterdam | 392 | 1970 |
| 23 | [IQIP®](https://www.tamtam.ai/c/iqip) (iqip.com)<br>Specializing in foundation installation and decommissioning for offshore wind, oil & gas, and civil markets through innovative equipment and services Smart solutions for every project | Civil Engineering | 🇳🇱 Sliedrecht | 392 |  |
| 24 | [Blue Phoenix](https://www.tamtam.ai/c/blue-phoenix) (bluephoenix-group.com)<br>Global resource recovery specializing in transforming incinerator bottom ash, construction waste, and contaminated soils into renewed materials for construction and infrastructure projects. | Environmental Services | 🇳🇱 Rotterdam | 377 | 2008 |
| 25 | [NEM Energy Group](https://www.tamtam.ai/c/nem-energy-group) (nem-energy.com)<br>A global leader in heat transfer technology, providing innovative solutions and aftermarket services to various industries worldwide | Renewable Energy Equipment Manufacturing | 🇳🇱 Zoeterwoude | 363 | 1929 |
| 26 | [Ingka Investments](https://www.tamtam.ai/c/ingka-investments) (ingka.com)<br>invests in and manages diverse assets including forestland, renewable energy, and real estate, ensuring financial resilience and contributing to sustainability for IKEA. | Investment Management | 🇳🇱 Leiden | 351 | 2018 |
| 27 | [Joulz Energy Solutions B.V.](https://www.tamtam.ai/c/joulz-energy-solutions-b-v) (volker-es.nl)<br>Working for a leading player in infrastructure and energy management, specializing in designing, installing, and managing complex medium and high-voltage systems for energy transition challenges | Oil and Gas | 🇳🇱 Rotterdam | 339 | 2009 |
| 28 | [N.V. Juva](https://www.tamtam.ai/c/n-v-juva) (juva.nl)<br>A network company specializing in sustainable energy transportation, products, and services, promoting innovation and collaboration to achieve a livable and sustainable society | Community Services | 🇳🇱 Poeldijk | 326 | 2017 |
| 29 | [VT Group](https://www.tamtam.ai/c/vt-group) (vtgroup.nl)<br>A maritime company offering logistic products, safe operations, fleet management, and bunkering services with a focus on sustainability and social responsibility | Maritime Transportation | 🇳🇱 Rotterdam | 314 | 1916 |
| 30 | [Wärtsilä Netherlands B.V.](https://www.tamtam.ai/c/wartsila-netherlands-b-v) (wartsila.com)<br>Global leader in innovative technologies and lifecycle solutions for marine and energy markets, emphasizing sustainability, equal opportunities, and employee growth | Maritime Transportation | 🇳🇱 Schiedam | 312 | 1834 |
| 31 | [Mokveld Valves](https://www.tamtam.ai/c/mokveld-valves) (mokveld.com)<br>A valve technology leader providing customized solutions for energy markets and water infrastructures, with a focus on sustainability and innovation | Industrial Machinery Manufacturing | 🇳🇱 Gouda | 291 | 1922 |
| 32 | [GustoMSC](https://www.tamtam.ai/c/gustomsc) (nov.com)<br>Global energy technology provider offering design & engineering consultancy for offshore units Specializing in optimizing performance for safe & efficient marine operations | Services for Renewable Energy | 🇳🇱 Schiedam | 286 | 1862 |
| 33 | [Omexom NL](https://www.tamtam.ai/c/omexom-nl) (omexom.nl)<br>Helps clients achieve energy transition goals by providing expertise in electricity networks, developing solutions for generation, transformation, and distribution. | Electric Power Transmission, Control, and Distribution | 🇳🇱 Dordrecht | 282 | 2001 |
| 34 | [ENGIE E&P](https://www.tamtam.ai/c/engie-e-and-p)<br>An international independent E&P company with operations in the North Sea, North Africa, and South East Asia, producing 154,000 net barrels of oil equivalent per day | Oil and Gas | 🇳🇱 The Hague | 258 |  |
| 35 | [Last Mile Solutions](https://www.tamtam.ai/c/last-mile-solutions) (lastmilesolutions.com)<br>Platform providing scalable, hardware-agnostic EV charging and energy transaction management solutions for operators and service providers across Europe. | Software Development | 🇳🇱 Rotterdam | 200 | 2007 |
| 36 | [Eneco eMobility Nederland](https://www.tamtam.ai/c/eneco-emobility-nederland) (eneco-emobility.com)<br>Eneco eMobility is a growing charging service provider in the Netherlands, Belgium, and Luxembourg, offering installation, maintenance, and Europe-wide charging solutions | Services for Renewable Energy | 🇳🇱 Rotterdam | 136 | 2009 |
| 37 | [Valvoline Global EMEA](https://www.tamtam.ai/c/valvoline-global-emea) (valvolineglobal.com)<br>A global leader in automotive and industrial solutions, offering high-quality products and services across various industries since 1866 | Oil and Gas | 🇳🇱 Dordrecht | 127 | 1866 |
| 38 | [Alco Energy Rotterdam B.V.](https://www.tamtam.ai/c/alco-energy-rotterdam-b-v) (alcoenergy.com)<br>A leading biorefinery based in Rotterdam producing bioethanol, animal feed, and CO₂, aiming to be climate-neutral by 2030 | Biotechnology Research | 🇳🇱 Europoort Rotterdam | 116 | 2010 |
| 39 | [Gunvor Energy Rotterdam](https://www.tamtam.ai/c/gunvor-energy-rotterdam) (gunvorenergyrotterdam.nl)<br>Gunvor Energy Rotterdam is a refinery and terminal in Rotterdam, prioritizing safety, reliability, quality, and sustainability Part of Gunvor Group, they produce various fuels and are investing in energy transition | Oil and Gas | 🇳🇱 Rotterdam Europoort | 111 | 1965 |
| 40 | [Eneco](https://www.tamtam.ai/c/eneco-rotterdam) (eneco.nl)<br>Eneco Group is an energy company focused on sustainability and innovation, offering smart products and services to empower individuals and businesses with green energy solutions | Renewable Energy Semiconductor Manufacturing | 🇳🇱 Rotterdam | 88 | 1995 |
| 41 | [Neste Netherlands B.V.](https://www.tamtam.ai/c/neste-netherlands-b-v) (nesteoil.nl)<br>A leading refinery and trading company producing high-quality, low-emission transportation fuels, including the world's largest supplier of renewable diesel With sustainable practices recognized globally | Renewables & Environment | 🇳🇱 Maasvlakte Rt | 57 |  |
| 42 | [SolarNRG](https://www.tamtam.ai/c/solarnrg) (solarnrg.nl)<br>SolarNRG is a leading solar panel installer in the Netherlands, serving residential and commercial clients with personalized solutions for over 20 years | Renewable Energy Semiconductor Manufacturing | 🇳🇱 Poeldijk | 53 | 2003 |
| 43 | [ENGIE E&P Nederland B.V.](https://www.tamtam.ai/c/engie-e-and-p-nederland-b-v) (engie-ep.nl)<br>Leading operator in Dutch North Sea, discovering, developing, and producing gas and oil fields Largest offshore gas producer, operating over 30 production locations | Oil and Gas | 🇳🇱 Zoetermeer | 51 | 1964 |
| 44 | [Achilles Brandstoffen Maatschappij B.V.](https://www.tamtam.ai/c/achilles-brandstoffen-maatschappij-b-v) (avia.nl)<br>Achilles Brandstoffen Maatschappij provides fuel and a variety of services at their gas stations, including shops, washing machines, and laundry services | Oil and Gas | 🇳🇱 The Hague | 49 |  |
| 45 | [EnergyZero](https://www.tamtam.ai/c/energyzero) (energyzero.nl)<br>EnergyZero is an innovative software company in the energy industry that helps businesses launch their own energy brands and optimize energy consumption | Software Development | 🇳🇱 Rotterdam | 48 | 2014 |
| 46 | [Battolyser Systems](https://www.tamtam.ai/c/battolyser-systems) (alquion.com)<br>The company specializes in developing and manufacturing the 'Battolyser' system, which stores electricity, produces hydrogen, and supports the energy transition | Renewable Energy Equipment Manufacturing | 🇳🇱 Schiedam | 41 | 2026 |
| 47 | [Peinemann Equipment](https://www.tamtam.ai/c/peinemann-equipment) (peinemannequipment.com)<br>Industry leader in bundle extracting, lifting, and cleaning equipment with over 40 years of experience, offering solutions for challenging operations to maximize efficiency and safety | Oil and Gas | 🇳🇱 Hoogvliet | 22 | 1980 |
| 48 | [Jedlix (Part of Kraken)](https://www.tamtam.ai/c/jedlix-part-of-kraken) (jedlix.com)<br>Jedlix develops a platform for optimizing electric vehicle charging, integrating them into the power grid, reducing costs, monetizing flexibility, and optimizing renewable energy use | Services for Renewable Energy | 🇳🇱 Rotterdam | 19 | 2016 |
| 49 | [DOSAS](https://www.tamtam.ai/c/dosas) (dosas.nl)<br>An energy technology company using innovative chemicals and molecular science to enhance well integrity, improve production efficiency, and promote sustainability | Oil and Gas | 🇳🇱 Rotterdam | 14 |  |
| 50 | [Smith Solar B.V.](https://www.tamtam.ai/c/smith-solar-b-v) (smithsolar.nl)<br>A company specializing in green energy products such as solar panels, home batteries, and charging stations for electric vehicles | Solar Electric Power Generation | 🇳🇱 Maasdijk | 13 | 2013 |

## 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 14, 2026.

## More company lists in South Holland

- [The largest companies in South Holland](https://www.tamtam.ai/l/largest-companies-south-holland) (2,508)
- [Multinational companies in South Holland](https://www.tamtam.ai/l/multinational-companies-south-holland) (559)
- [Transportation, Logistics, Supply Chain and Storage companies in South Holland](https://www.tamtam.ai/l/transportation-logistics-supply-chain-and-storage-companies-south-holland) (276)
- [Logistics companies in South Holland](https://www.tamtam.ai/l/logistics-companies-south-holland) (263)
- [Retail chains in South Holland](https://www.tamtam.ai/l/retail-chains-south-holland) (188)
- [Critical infrastructure operators in South Holland](https://www.tamtam.ai/l/critical-infrastructure-operators-south-holland) (152)
- [Truck Transportation companies in South Holland](https://www.tamtam.ai/l/truck-transportation-companies-south-holland) (145)
- [Professional services firms in South Holland](https://www.tamtam.ai/l/professional-services-firms-south-holland) (145)
- [Software Development companies in South Holland](https://www.tamtam.ai/l/software-development-companies-south-holland) (142)
- [Companies with in-house R&D in South Holland](https://www.tamtam.ai/l/r-and-d-companies-south-holland) (140)
- [SaaS companies in South Holland](https://www.tamtam.ai/l/saas-companies-south-holland) (137)
- [Manufacturers in South Holland](https://www.tamtam.ai/l/manufacturers-south-holland) (134)
- [Family-owned companies in South Holland](https://www.tamtam.ai/l/family-owned-companies-south-holland) (128)
- [Healthcare providers in South Holland](https://www.tamtam.ai/l/healthcare-providers-south-holland) (124)
- [IT Services and IT Consulting companies in South Holland](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-south-holland) (121)
- [Financial services firms in South Holland](https://www.tamtam.ai/l/financial-services-firms-south-holland) (120)
- [Education providers in South Holland](https://www.tamtam.ai/l/education-companies-south-holland) (111)
- [Hospitals and Health Care companies in South Holland](https://www.tamtam.ai/l/hospitals-and-health-care-companies-south-holland) (109)
- [Financial Services companies in South Holland](https://www.tamtam.ai/l/financial-services-companies-south-holland) (107)
- [Consulting firms in South Holland](https://www.tamtam.ai/l/consulting-firms-south-holland) (106)
- [Distributors and wholesalers in South Holland](https://www.tamtam.ai/l/distributors-and-wholesalers-south-holland) (96)
- [IT services companies in South Holland](https://www.tamtam.ai/l/it-services-companies-south-holland) (93)
- [Hardware manufacturers in South Holland](https://www.tamtam.ai/l/hardware-companies-south-holland) (86)
- [Hotel and hospitality groups in South Holland](https://www.tamtam.ai/l/hospitality-groups-south-holland) (86)

## The same list elsewhere in Netherlands

- [Energy companies in the Netherlands](https://www.tamtam.ai/l/energy-companies-netherlands) (199)
- [Energy companies in North Holland](https://www.tamtam.ai/l/energy-companies-north-holland) (48)
- [Energy companies in Amsterdam](https://www.tamtam.ai/l/energy-companies-amsterdam) (29)

## The same list elsewhere

- [Energy companies in the world](https://www.tamtam.ai/l/energy-companies-in-the-world) (10,501)
- [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-south-holland