| # | Company | Employees |
|---|---|---|
| 1 | 158,647 | |
| 2 |
EnBW Energie Baden-Württemberg AGenbw.com
A leading energy supply company in Germany and Europe with a workforce of 20,000, providing electricity, gas, water, and energy-related products and services to 55 million customers |
27,000 |
| 3 |
Rolls-Royce Power Systemsmtu-solutions.com
Develops sustainable, climate-neutral drive, propulsion, and power generation solutions, including high-speed engines, diesel and gas systems, and battery containers for various industries. |
5,458 |
| 4 |
ElringKlingerelringklinger.de
A global supplier in the automotive industry, providing innovative solutions for combustion engines, electric motors, lightweighting concepts, battery technology, fuel cells, and sealing systems |
3,255 |
| 5 |
Netze BW GmbHnetze-bw.de
Large distribution network operator providing electricity, gas, and water services alongside municipal utility consulting and technical infrastructure management across Southwest Germany. |
2,411 |
| 6 |
TransnetBW GmbHtransnetbw.de
Transmission system operator ensuring secure electricity grids for eleven million people in Baden-Württemberg, allowing for reliable energy supply and economic stability |
1,403 |
| 7 |
Witzenmann Groupwitzenmann.com
Global leader in transmission of media and energy, offering metal hoses, expansion joints, and more for various industries worldwide |
1,334 |
| 8 |
mtu solutionsmtu-solutions.com
The company focuses on creating sustainable power solutions for drive, propulsion, and power generation, providing world-class products and services globally |
1,248 |
| 9 |
Rolls-Royce Solutions GmbHmtu-solutions.com
Leading in propulsion and energy solutions, the company's sites in Friedrichshafen, Duisburg, and Hamburg focus on developing environmentally friendly products for the future |
1,145 |
| 10 |
VARTA AGvarta-ag.com
Development and production of microbatteries, lithium-ion cells, household batteries, energy storage systems, and customized battery solutions worldwide. |
1,085 |
| 11 |
BayWa r.e. Solar Trade Globalsolar-distribution.baywa-re.com
Worldwide distributor of photovoltaic components, providing product supply, training, installation support, system configurations, and digital planning tools for B2B customers. |
940 |
| 12 |
PFISTERERpfisterer.com
Specializing in energy infrastructure, this company provides cable accessories, overhead line technology, and components for power transmission from generation to consumption worldwide |
771 |
| 13 |
MVV Energie AGmvv.de
A leading German energy company focusing on providing reliable, economical, and environmentally-friendly energy solutions, committed to becoming #climatepositive by 2035 |
661 |
| 14 |
Boysen Gruppeboysen-online.de
As a specialist in exhaust technology, the company drives technological transformation, offering innovative manufacturing technologies to premium automotive and commercial vehicle customers worldwide |
378 |
| 15 |
Caterpillar Energy Solutions GmbHcaterpillar-energy-solutions.de
A company specializing in highly-efficient, eco-friendly solutions for distributed power generation through gas engines, power plants, and CHP plants |
346 |
| 16 |
Former MWM GmbHmwm.net
This company was formerly MWM GmbH and is now rebranded as Caterpillar Energy Solutions GmbH They focus on gas engines and energy projects |
342 |
| 17 |
Badenovabadenova.de
A modern energy and environmental services provider with a strong network of companies, dedicated to sustainability, innovation, and climate protection for a better future |
313 |
| 18 |
Südzucker Groupsuedzuckergroup.com
Production and supply of sugar, functional food ingredients, frozen foods, renewable ethanol, starch products, and fruit preparations internationally. |
276 |
| 19 |
ZG Raiffeisen eGzg-raiffeisen.de
Cooperative operating workshops, markets, construction centers, agricultural branches, animal feed production, fuel stations, and fuel trading in Germany, France, Romania. |
235 |
| 20 |
ADS-TEC Energyads-tec-energy.com
Develops battery-supported ultra-fast charging systems for electric vehicles, enabling quick charging even with power-limited grid connections, leveraging extensive lithium-ion technology experience. |
220 |
| 21 |
Instagridinstagrid.co
Portable, silent, fume-free battery power supplies for construction, film, events, and emergency services, replacing traditional generators with sustainable, high-performance energy solutions. |
194 |
| 22 |
Hectronic GmbHhectronic.com
The company offers innovative e-mobility, parking, and refueling solutions globally, with hardware, software, and cloud systems for forward-looking solutions |
142 |
| 23 |
Cellpack Electrical Productscellpack.com
Development and production of cable connecting systems and accessories for low and medium voltage power cables up to 42 kV. |
134 |
| 24 |
SOWITEC GROUPsowitec.com
Develops, finances, builds, and operates wind and solar projects worldwide, covering all aspects from site assessment to operation and commercialization. |
127 |
| 25 |
enersol GmbHenersol.eu
The company is a solar energy expert committed to enabling people to be part of the energy revolution, providing access to clean, affordable, and secure energy |
109 |
| 26 |
AZUR SPACE Solar Power GmbHazurspace.com
Develops and manufactures high-efficiency solar cells for space applications, powering satellites and spacecraft with reliable, advanced photovoltaic technology. |
80 |
| 27 | 72 | |
| 28 |
Erdgas Südwest GmbHerdgas-suedwest.de
The company provides self-determined energy solutions to promote sustainability, regional energy transition, and customer autonomy towards a greener future |
65 |
| 29 |
HEIDELBERG AMPERFIEDamperfied.de
Provides comprehensive smart charging infrastructure solutions and services, ensuring high availability and optimized operation for electric vehicle charging across Europe. |
34 |
| 30 |
Bidirex GmbHbidirex.com
Develops business areas and manufactures charging stations for electric vehicles. Focuses on the charging infrastructure and its related service development. |
29 |
| 31 |
Hyfindrhyfindr.com
Hyfindr helps developers find components for hydrogen systems like fuel cells and electrolyzers worldwide, fostering industry growth and innovation |
19 |
| 32 |
OCEANERGY AGoceanergy.com
This company specializes in green/clean technology by producing green hydrogen from wind power using kites on the ocean for efficient and cost-effective energy solutions |
15 |
| 33 | 11 | |
| 34 |
CENmatcen-mat.com
Innovative electrolyser company providing economical, efficient, and critical raw material free electrolysis for affordable and scalable green hydrogen production |
7 |
| 35 |
WS Reformer GmbHwsreformer.de
A German company specializing in small-scale green hydrogen generation products, with expertise in reforming, NH3-cracking, and fuel cell system design |
6 |
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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 Oct 24, 2026.
More company lists in Baden-Württemberg
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- SaaS companies in Baden-Württemberg 166
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- Automotive manufacturers and suppliers in Baden-Württemberg 85
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- Robotics and automation companies in Baden-Württemberg 56
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- Industrial Machinery Manufacturing companies in Baden-Württemberg 44