# The 50 largest energy companies in Sweden

Tamtam tracks 66 energy companies headquartered in Sweden. This list ranks the 50 largest by number of employees on LinkedIn, led by Vattenfall, Stena AB and SCA - Hygiene and Forest Products Company. Their median headcount is 672. Half of them were founded in 1959 or later. The most common headquarters are Stockholm (18), Gothenburg (4) and Malmö (3).

These Swedish companies are primarily large and mid-sized firms operating in the energy sector, encompassing utilities, renewable energy, and industrial machinery manufacturing. Key players include Vattenfall, a European energy company striving for fossil freedom, and Stena AB, a family-owned conglomerate with interests in shipping and offshore drilling. NIBE Group offers sustainable energy solutions, while Northvolt focuses on sustainable battery manufacturing.

A notable pattern is the strong presence of companies involved in forest products and bioenergy, such as SCA, a major private forest owner, and Södra, a forestry-based economic association. This highlights Sweden's focus on leveraging its natural resources for energy and industrial purposes.

🇸🇪 Sweden · 50 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Vattenfall](https://www.tamtam.ai/c/vattenfall) (vattenfall.com)<br>This European energy company supplies electricity to industries and homes while striving for fossil freedom through innovation and cooperation | Utilities | 🇸🇪 Solna | 15,849 | 1909 |
| 2 | [Stena AB](https://www.tamtam.ai/c/stena-ab) (stena.com)<br>One of the largest family-owned companies in Sweden, operating in Ferry, Offshore Drilling, Shipping, Property, Finance, and New Business sectors worldwide | Maritime | 🇸🇪 Gothenburg | 6,453 | 1939 |
| 3 | [SCA - Hygiene and Forest Products Company](https://www.tamtam.ai/c/sca-hygiene-and-forest-products-company) (sca.com)<br>A company split into Essity, focusing on health and hygiene solutions, and SCA, a leading industrial ecosystem with forest products Visit their career pages for more information | Manufacturing | 🇸🇪 Stockholm | 3,407 |  |
| 4 | [NIBE Group](https://www.tamtam.ai/c/nibe-group) (nibegroup.com)<br>A company offering world-class sustainable energy solutions through business operations, product development, and corporate acquisitions over the last 25 years | Industrial Machinery Manufacturing | 🇸🇪 Markaryd | 2,850 | 1952 |
| 5 | [Lantmännen](https://www.tamtam.ai/c/lantmannen) (lantmannen.com)<br>Leading agricultural cooperative in Northern Europe, specializing in agriculture, machinery, bioenergy, and food products Owned by Swedish farmers, operating worldwide | Food and Beverage Manufacturing | 🇸🇪 Stockholm | 2,751 |  |
| 6 | [SCA](https://www.tamtam.ai/c/sca-sundsvall) (sca.com)<br>Largest private forest owner in Europe producing wood products, pulp, packaging paper, renewable energy, and offering forest owner services and transport solutions. | Paper and Forest Product Manufacturing | 🇸🇪 Sundsvall | 2,696 | 1929 |
| 7 | [Södra](https://www.tamtam.ai/c/sodra) (sodra.com)<br>A forestry-based economic association in southern Sweden, providing raw materials for various operations, employing 3,100 people, and producing sawn timber, paper pulp, biofuel, and electricity | Paper and Forest Product Manufacturing | 🇸🇪 Växjö | 2,349 | 1938 |
| 8 | [Holmen](https://www.tamtam.ai/c/holmen) (holmen.com)<br>A sustainable business centered around the forest ecocycle, producing renewable products like wood, paperboard, and paper, with a workforce of 3,500 people | Paper and Forest Product Manufacturing | 🇸🇪 Stockholm | 2,023 |  |
| 9 | [Svenska kraftnät](https://www.tamtam.ai/c/svenska-kraftnat) (svk.se)<br>The company is responsible for managing Sweden's power system, ensuring safe and sustainable electricity supply while prioritizing privacy and public transparency | Utilities | 🇸🇪 Sundbyberg | 1,935 | 1992 |
| 10 | [OKQ8](https://www.tamtam.ai/c/okq8) (okq8.se)<br>A leading Scandinavian fuel company with a focus on sustainability, reducing inequality, and providing products and services for people on the move | Retail | 🇸🇪 Stockholm | 1,710 | 1926 |
| 11 | [Northvolt](https://www.tamtam.ai/c/northvolt) (northvolt.com)<br>A company dedicated to enabling a decarbonized future through sustainable battery manufacturing, driven by a commitment to fossil-free energy, ethical sourcing, and recycling | Industrial Machinery Manufacturing | 🇸🇪 Stockholm | 1,624 |  |
| 12 | [Vattenfall Eldistribution AB](https://www.tamtam.ai/c/vattenfall-eldistribution-ab) (vattenfalleldistribution.se)<br>Vattenfall Eldistribution distributes electricity efficiently to over 900,000 customers, ensuring reliable network capacity and delivery quality through multiple offices in Sweden | Utilities | 🇸🇪 Solna | 1,268 | 1909 |
| 13 | [Preem AB](https://www.tamtam.ai/c/preem-ab) (varopreem.com)<br>A leading energy company in Sweden, focused on sustainability and innovation in the changing energy landscape, aiming for a greener future | Renewable Energy Power Generation | 🇸🇪 Stockholm | 1,232 | 1994 |
| 14 | [Relacom](https://www.tamtam.ai/c/relacom) (oneco.se)<br>Relacom, now operating as Oneco, is a leading network services provider for international operators and local partners, specializing in network construction, installation, and maintenance | Telecommunications | 🇸🇪 Stockholm | 1,189 |  |
| 15 | [Göteborg Energi](https://www.tamtam.ai/c/goteborg-energi) (goteborgenergi.se)<br>Production and delivery of sustainable energy, development of smarter systems, and energy-efficient solutions for Gothenburg's urban future. | Utilities | 🇸🇪 Gothenburg | 1,142 |  |
| 16 | [E.ON Sverige](https://www.tamtam.ai/c/e-on-sverige) (eon.se)<br>The company is dedicated to providing Sweden with renewable energy to improve lives, focusing on smart energy usage and sustainability goals for a better future | Utilities | 🇸🇪 Malmö | 1,055 | 1906 |
| 17 | [NIBE](https://www.tamtam.ai/c/nibe) (nibe.eu)<br>Development and manufacturing of energy-efficient indoor comfort solutions, heating components, and control systems for properties, industry, and infrastructure. | Renewable Energy Equipment Manufacturing | 🇸🇪 Markaryd | 990 |  |
| 18 | [ONE Nordic AB](https://www.tamtam.ai/c/one-nordic-ab) (one-nordic.se)<br>ONE Nordic is a leading provider of technical services, construction, and maintenance in the energy sector, specializing in developing sustainable energy systems in Sweden | Utilities | 🇸🇪 Malmö | 909 | 2011 |
| 19 | [Ludvika kommun](https://www.tamtam.ai/c/ludvika-kommun) (ludvika.se)<br>A growing municipality in southern Dalarna, focused on promoting growth and opportunities for its 27,000 residents through targeted efforts in youth, employment, and environmental quality | Government Administration | 🇸🇪 Ludvika | 849 |  |
| 20 | [Ellevio](https://www.tamtam.ai/c/ellevio) (ellevio.se)<br>With nearly a million customers, this company is one of Sweden's largest electricity network companies, playing a key role in transitioning towards a more electrified society | Utilities | 🇸🇪 Stockholm | 831 | 2015 |
| 21 | [Stockholm Exergi](https://www.tamtam.ai/c/stockholm-exergi) (stockholmexergi.se)<br>Stockholm's energy company provides heating, cooling, electricity, and waste processing services to over 800,000 people and numerous businesses in the region | Utilities | 🇸🇪 Stockholm | 825 |  |
| 22 | [Stegra](https://www.tamtam.ai/c/stegra) (stegra.com)<br>Building a plant in Sweden, producing green hydrogen and green steel, to decarbonize hard-to-abate industry using renewable electricity. | Primary Metal Manufacturing | 🇸🇪 Stockholm | 825 | 2020 |
| 23 | [Tekniska verken i Linköping AB](https://www.tamtam.ai/c/tekniska-verken-i-linkoping-ab) (tekniskaverken.se)<br>A regional company providing electricity, water, heating, cooling, waste management, broadband, and biogas services to around 280,000 private and corporate clients | Services for Renewable Energy | 🇸🇪 Linköping | 775 | 1902 |
| 24 | [Nynas AB](https://www.tamtam.ai/c/nynas-ab) (nynas.com)<br>Specializing in bitumen and naphthenic specialty products, the company offers solutions for sustainable infrastructure and electrification, creating value for customers worldwide | Chemical Manufacturing | 🇸🇪 Stockholm | 713 | 1928 |
| 25 | [Aira](https://www.tamtam.ai/c/aira) (airahome.com)<br>Aira is revolutionizing home energy with clean technology, using heat pumps to reduce carbon emissions and energy bills in Europe | Services for Renewable Energy | 🇸🇪 Stockholm | 672 | 2022 |
| 26 | [Telge](https://www.tamtam.ai/c/telge) (telge.se)<br>The company in Södertälje drives societal development through smart and sustainable business practices, prioritizing employee growth, development, and work-life balance with various benefits | Government Administration | 🇸🇪 Södertälje | 669 |  |
| 27 | [Transtema](https://www.tamtam.ai/c/transtema) (transtema.com)<br>Transtema is a leading Nordic company specializing in designing, building, operating, and maintaining communication networks They also offer technical consulting and equipment | Telecommunications | 🇸🇪 Mölndal | 666 | 1997 |
| 28 | [OKG](https://www.tamtam.ai/c/okg) (okg.se)<br>The company operates three nuclear reactors in Sweden, generating 10% of the country's electricity It has 850 employees and an annual turnover of SEK 3 billion | Nuclear Electric Power Generation | 🇸🇪 Oskarshamn | 651 | 1965 |
| 29 | [Cavotec](https://www.tamtam.ai/c/cavotec) (cavotec.com)<br>A cleantech leader specializing in automation and electrification solutions for decarbonizing ports and industrial operations globally | Mechanical Or Industrial Engineering | 🇸🇪 Stockholm | 641 | 1974 |
| 30 | [Eksjö kommun](https://www.tamtam.ai/c/eksjo-kommun) (eksjo.se)<br>The company provides essential services and support for a good quality of life, focusing on value for everyone they serve Opportunities for development and challenges are available | Government Administration | 🇸🇪 Eksjö | 640 |  |
| 31 | [Skellefteå Kraft](https://www.tamtam.ai/c/skelleftea-kraft) (skekraft.se)<br>The company is a historical power company founded in 1906, known for having the lowest electricity prices and being a major investor in the region | Renewable Energy Power Generation | 🇸🇪 Skellefteå | 622 | 1906 |
| 32 | [Mälarenergi AB](https://www.tamtam.ai/c/malarenergi-ab) (malarenergi.se)<br>Providing essential energy, water, and broadband solutions to support a thriving society and sustainable community in collaboration with stakeholders | Utilities | 🇸🇪 Västerås | 610 | 1861 |
| 33 | [Svea Solar](https://www.tamtam.ai/c/svea-solar) (sveasolar.com)<br>Providing digital solutions to enable ownership and transition from dirty energy to renewable power for a sustainable planet. | Solar Electric Power Generation | 🇸🇪 Bromma | 571 | 2014 |
| 34 | [OX2](https://www.tamtam.ai/c/ox2) (ox2.com)<br>Develops, constructs, manages, and owns large-scale renewable energy solutions including wind, solar, and energy storage, powering sustainable electrification globally. | Renewable Energy Power Generation | 🇸🇪 Stockholm | 548 | 2004 |
| 35 | [Renova AB](https://www.tamtam.ai/c/renova-ab) (renova.se)<br>A leading environmental company in western Sweden providing waste management solutions to reduce environmental impact, with 780 employees and owned by municipalities | Environmental Services | 🇸🇪 Gothenburg | 528 | 1998 |
| 36 | [Öresundskraft AB](https://www.tamtam.ai/c/oresundskraft-ab) (oresundskraft.se)<br>Provides electricity, district heating, natural gas, cooling, broadband, and services to 260,000 customers focusing on sustainability. | Utilities | 🇸🇪 Helsingborg | 435 | 1859 |
| 37 | [Umeå Energi AB](https://www.tamtam.ai/c/umea-energi-ab) (umeaenergi.se)<br>An energy company and community partner providing sustainable energy and communication solutions, promoting innovation and driving sustainable development in Umeå region | Government Administration | 🇸🇪 Umeå | 424 | 1892 |
| 38 | [E.ON ENERGIDISTRIBUTION AB](https://www.tamtam.ai/c/e-on-energidistribution-ab) (eon.se)<br>The company specializes in building and maintaining the electricity grid to ensure reliable energy supply for customers, including investments in new infrastructure | Utilities | 🇸🇪 Malmö | 400 | 1906 |
| 39 | [Kraftringen](https://www.tamtam.ai/c/kraftringen) (kraftringen.se)<br>An energy company focused on leading the development of future energy solutions, prioritizing local energy solutions for environmental benefits and sustainable growth in the region | Renewable Energy Power Generation | 🇸🇪 Lund | 371 | 1907 |
| 40 | [Micropower Group](https://www.tamtam.ai/c/micropower-group) (micropower-group.com)<br>A Swedish company specializing in developing and manufacturing unique battery and charger systems, Lithium-Ion batteries, power supplies, and smart software solutions | Appliances, Electrical, and Electronics Manufacturing | 🇸🇪 Växjö | 364 | 1984 |
| 41 | [Eskilstuna Strängnäs Energi och Miljö AB](https://www.tamtam.ai/c/eskilstuna-strangnas-energi-och-miljo-ab) (esem.se)<br>ESEM operates and develops the activities and facilities of EEM and SEVAB with around 550 employees working on their behalf | Utilities | 🇸🇪 Eskilstuna | 350 | 2014 |
| 42 | [GARO](https://www.tamtam.ai/c/garo) (garo.se)<br>Development and marketing of electrical installation products focusing on safety, user-friendliness, sustainability, including e-mobility and temporary power solutions. | Appliances, Electrical, and Electronics Manufacturing | 🇸🇪 Gnosjö | 325 | 1939 |
| 43 | [Aimo](https://www.tamtam.ai/c/aimo) (aimo.se)<br>A leading parking company in Sweden, providing innovative and sustainable mobility solutions to enhance customer experience and promote smarter, more sustainable cities | Consumer Services | 🇸🇪 Stockholm | 318 | 1959 |
| 44 | [Northern Offshore Services](https://www.tamtam.ai/c/northern-offshore-services) (n-o-s.eu)<br>Provider of high-speed vessels for staff and light equipment transportation, offering vessel management solutions to the marine sector, with a fleet of specialized catamarans | Maritime Transportation | 🇸🇪 Gothenburg | 309 | 2008 |
| 45 | [Veolia Norden](https://www.tamtam.ai/c/veolia-norden) (veolia.se)<br>A Nordic company providing water, waste, and energy solutions to industrial, public, and commercial clients, focused on resource optimization and sustainability | Environmental Services | 🇸🇪 Stockholm | 285 |  |
| 46 | [Jönköping Energi](https://www.tamtam.ai/c/jonkoping-energi) (jonkopingenergi.se)<br>A municipality-owned company in Jönköping provides competitive, green energy, and communication solutions through an efficient infrastructure, prioritizing sustainability and customer relationships | Services for Renewable Energy | 🇸🇪 Jönköping | 278 | 1907 |
| 47 | [Alfa Laval Cryogenics](https://www.tamtam.ai/c/alfa-laval-cryogenics) (alfalaval.com)<br>Specializing in cryogenics, Fives Energy focuses on designing and maintaining heat exchangers, pumps, and related solutions for the gas industry globally | Industrial Machinery Manufacturing | 🇸🇪 Lund | 207 | 1959 |
| 48 | [Omexom Sverige](https://www.tamtam.ai/c/omexom-sverige) (omexom.se)<br>Enables energy transition through sustainable electrical power, rail, and electrification solutions, ensuring safe, sustainable, and efficient electricity supply globally. | Electric Power Transmission, Control, and Distribution | 🇸🇪 Stockholm | 193 | 2000 |
| 49 | [Nuvia Nordic AB](https://www.tamtam.ai/c/nuvia-nordic-ab) (nuvia.com)<br>Specializing in nuclear service and production development, this company focuses on complex environments like the nuclear industry, providing innovative and cost-effective solutions to clients | Construction | 🇸🇪 Norrköping | 129 | 2011 |
| 50 | [Echandia](https://www.tamtam.ai/c/echandia) (echandia.com)<br>This company provides safe and durable electrification solutions for the marine industry, specializing in electric propulsion and onboard support systems | Energy Technology | 🇸🇪 Stockholm | 96 | 2018 |

## 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 Sweden

- [The largest companies in Sweden](https://www.tamtam.ai/l/largest-companies-sweden) (3,746)
- [Multinational companies in Sweden](https://www.tamtam.ai/l/multinational-companies-sweden) (1,088)
- [Retail chains in Sweden](https://www.tamtam.ai/l/retail-chains-sweden) (392)
- [Software Development companies in Sweden](https://www.tamtam.ai/l/software-development-companies-sweden) (392)
- [SaaS companies in Sweden](https://www.tamtam.ai/l/saas-companies-sweden) (378)
- [Companies with in-house R&D in Sweden](https://www.tamtam.ai/l/r-and-d-companies-sweden) (332)
- [Manufacturers in Sweden](https://www.tamtam.ai/l/manufacturers-sweden) (331)
- [Government Administration companies in Sweden](https://www.tamtam.ai/l/government-administration-companies-sweden) (313)
- [Publicly traded companies in Sweden](https://www.tamtam.ai/l/publicly-traded-companies-sweden) (303)
- [Critical infrastructure operators in Sweden](https://www.tamtam.ai/l/critical-infrastructure-operators-sweden) (277)
- [Hardware manufacturers in Sweden](https://www.tamtam.ai/l/hardware-companies-sweden) (250)
- [Companies with a mobile app in Sweden](https://www.tamtam.ai/l/companies-with-mobile-app-sweden) (240)
- [Financial services firms in Sweden](https://www.tamtam.ai/l/financial-services-firms-sweden) (232)
- [Education providers in Sweden](https://www.tamtam.ai/l/education-companies-sweden) (209)
- [Public sector organisations in Sweden](https://www.tamtam.ai/l/public-sector-organisations-sweden) (205)
- [Corporate groups and holding companies in Sweden](https://www.tamtam.ai/l/holding-companies-sweden) (197)
- [Professional services firms in Sweden](https://www.tamtam.ai/l/professional-services-firms-sweden) (194)
- [Financial Services companies in Sweden](https://www.tamtam.ai/l/financial-services-companies-sweden) (190)
- [E-commerce companies in Sweden](https://www.tamtam.ai/l/ecommerce-companies-sweden) (186)
- [Retail companies in Sweden](https://www.tamtam.ai/l/retail-companies-sweden) (175)
- [IT Services and IT Consulting companies in Sweden](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-sweden) (159)
- [IT services companies in Sweden](https://www.tamtam.ai/l/it-services-companies-sweden) (155)
- [Subscription businesses in Sweden](https://www.tamtam.ai/l/subscription-businesses-sweden) (151)
- [Consulting firms in Sweden](https://www.tamtam.ai/l/consulting-firms-sweden) (136)

## 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-sweden