These South African companies are primarily involved in the energy sector, including utilities, oil and gas, and mining. Most are large, established firms. Eskom Holdings SOC Ltd is a major power utility for electricity generation and distribution. Sasol is a global chemicals and energy company, while Engen and PetroSA specialize in petroleum products and refining. Exxaro Resources and Seriti Resources are significant coal producers.
The headquarters of these companies show a concentration in Johannesburg and Cape Town. Many of these firms have a long history, with Eskom founded in 1923 and Sasol in 1950, indicating a mature industrial base.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Eskom Holdings SOC Ltdeskom.co.za
A leading power utility in South Africa, with a significant presence in electricity generation, transportation, and distribution on the African continent |
42,862 | |||
| 2 | 31,000 | ||||
| 3 |
City of Cape Towncapetown.gov.za
Municipality in Cape Town offering a diverse range of services to 4 million residents, with a focus on community, development, and growth |
22,864 | |||
| 4 |
Engenengen.co.za
African energy group marketing petroleum, lubricants, and convenience services through service stations across sub-Saharan Africa and the Indian Ocean Islands |
8,593 | |||
| 5 |
Exxaro Resourcesexxaro.com
A leading South African coal producer with diversified mining interests, embracing renewable energy and aiming for carbon neutrality by 2050 |
5,235 | |||
| 6 |
Seriti Resourcesseritiza.com
A black-owned South African mining company focused on acquiring and operating coal operations, ensuring sustainable energy generation, and empowering communities and employees |
2,235 | |||
| 7 |
Astron Energy (Pty) Ltd.astronenergy.co.za
A leading petroleum products supplier in South Africa with a network of 850 service stations, a crude oil refinery, and a lubricants manufacturing plant driving sustainable economic growth |
2,022 | |||
| 8 |
PetroSApetrosa.co.za
South African national oil corporation specializing in gas-to-liquids technology, operating major refineries and pursuing investment opportunities in Africa and internationally |
1,699 | |||
| 9 |
Sasol Synfuels International (Pty) Ltd.sasol.com
An oil and energy company based in South Africa that specializes in synthetic fuel production and international operations Located in Johannesburg |
1,410 | |||
| 10 |
Thungelathungela.com
A proactive and responsible mining sector influencer committed to safety, community connection, and excellence through expertise and unity |
1,235 | |||
| 11 | 
City Powercitypower.co.za
The company ensures accurate billing, handles adjustments and meter readings, investigates unbilled accounts, resolves customer queries, and submits detailed reports |
1,108 | |||
| 12 |
John Thompson - A division of ACTOM (Pty) Ltdjohnthompson.co.za
A leader in energy and environmental solutions, offering design, engineering, manufacture, and maintenance of boilers, air filtration equipment, and outsourced steam solutions |
839 | |||
| 13 |
ERG Africaergafrica.com
A leading diversified natural resources group with production assets across 15 countries, focusing on mining and processing copper, cobalt, and other minerals globally |
625 | |||
| 14 |
National Petroleum Refiners of SA (Pty) Ltd (NATREF)sasol.com
A joint venture refinery in South Africa supplied by a pipeline from Durban, specializing in high white product yield with complex unit operations |
594 | |||
| 15 |
WEG Africaweg.net
Global provider of industrial electrical technologies with a focus on electric motors and solutions, serving clients in Africa and worldwide |
554 | |||
| 16 |
CBi-electric: african cablesafricancables.com
A leading electric power cable manufacturer in Southern Africa, offering a comprehensive range of products, installation services, and commitment to B-BBEE contribution |
432 | |||
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| 17 |
Mitsubishi Hitachi Power Systems Africamhps.com
Specializing in power plant construction and engineering services in Southern Africa, including steam and gas turbines, air quality control systems, and local content projects |
401 | |||
| 18 |
Globeleqglobeleq.com
A leading power industry developer and operator in Africa, Globeleq focuses on utility scale power plants, generating and developing power across the continent |
399 | |||
| 19 |
Cummins Africa Middle Eastcummins.com
Design, manufacture, sales, and service of diesel engines and power generation equipment with a focus on community and technical leadership. |
393 | |||
| 20 |
Steinmuller Engineering Services (pty) Ltd.
Local service provider catered to power generation, petrochemical, and allied industries with a focus on industrial and utility boiler services |
377 | |||
| 21 |
SEBOKENG FUELSsebokengfuels.co.za
A Gauteng-based company distributing high-quality petroleum, diesel, and paraffin in bulk, ensuring supply certainty through strong partnerships with major suppliers |
373 | |||
| 22 |
AutoXauto-x.co.za
Manufacture and distribute automotive, motorcycle, industrial batteries; supply OEMs, aftermarket, retail outlets across South Africa and Africa. |
364 | |||
| 23 |
Caltex Lubricants South Africadeloperformance.caltex.co.za
Manufacturer of premium lubricants, providing reliable performance with over 75 years of experience and a century of scientific research and innovation |
331 | |||
| 24 |
George Municipality - Official LinkedIngeorge.gov.za
The George Municipality serves over 200,000 residents in the Western Cape Province of South Africa, providing various services and promoting tourism and investment opportunities |
320 | |||
| 25 |
Terra Firmaterrafirma.africa
Leading energy engineering solution provider in sub-Saharan Africa, offering end-to-end sustainable energy strategies with a focus on client relationships and environmental impact |
316 | |||
| 26 |
Transnet Pipelines - TPLtransnet.net
Supplier of majority of refined products for inland markets, jet fuel for OR Tambo airport, crude for Natref refinery, and methane-rich gas to KwaZulu-Natal |
312 | |||
| 27 |
TEFLA Grouptefla.co.za
A versatile South African business specializing in landscaping, facilities management, and engineering services, with origins in a small plant stall |
295 | |||
| 28 |
Herholdt's Groupherholdts.co.za
Distributing sustainable energy solutions and leading brands in renewable and electrical sectors across South Africa and bordering countries with exceptional value and service |
255 | |||
| 29 |
Canyon Coalcanyoncoal.com
A coal exploration and mining organization in South Africa, committed to unlocking coal potential through partnerships and contributing to economic growth |
245 | |||
| 30 |
SGB-SMIT POWER MATLAsgbsmitpowermatla.com
European transformer manufacturer with local empowerment, producing power and distribution transformers in Pretoria and Cape Town for the African continent |
205 | |||
| 31 |
ENGIE South Africaengie-africa.com
A company focused on accelerating the shift to a carbon neutral economy in Africa through energy efficiency and environmentally friendly solutions |
197 | |||
| 32 |
BTE Renewables has been acquired by ENGIE Africaengie-africa.com
African company developing and operating utility-scale wind and solar projects with a focus on sustainability, community engagement, and high standards |
46 | |||
| 33 |
CAGE Technologies ltdcagetechnologies.co.uk
The company offers clean and cost-effective alternative power solutions using hydrogen, biogas, and other gas fuels, successfully displacing diesel engines |
5 | |||
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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.
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