The energy sector in Beijing is dominated by large state-owned enterprises, with a strong focus on oil and gas, as well as broader utilities and engineering services. Companies like China Petroleum Engineering & Construction Corporation (CPECC) and Sinopec International Petroleum Service Corporation are prominent in oil and gas, providing comprehensive services for the entire lifecycle of operations. SANY Group, though in machinery manufacturing, also plays a significant role with its global presence. State Grid Corporation of China focuses on online services and solutions in the energy sector. There is also a notable presence of renewable energy firms, such as Hanergy Mobile Energy Holding Group, specializing in thin-film solar power.
Many of these companies, such as COSL - China Oilfield Services Limited and CGGC Intl. of Energy China, have extensive experience, with foundations dating back to the mid-20th century, indicating a mature industry landscape. While oil and gas and traditional utilities form a core, there's also an emerging interest in renewable energy and green development, as seen with CWE (China International Water & Electric Corp.) focusing on hydropower and new energy projects.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
SANY Groupsanyglobal.com
A global company founded in 1989, specializing in manufacturing machinery for various industries, with a strong presence in over 180 countries worldwide |
6,983 | |||
| 2 |
China Petroleum Engineering & Construction Corporation (CPECC)cpecc.cn
Provides comprehensive engineering, procurement, and construction services for oil and gas projects globally, including facilities, refineries, and storage. |
5,774 | |||
| 3 |
Sinopec International Petroleum Service Corporationssc.sinopec.com
A leading petroleum engineering service company in China providing comprehensive services for the entire lifecycle of oil and gas field operations internationally |
3,015 | |||
| 4 |
国家电网有限公司sgcc.com.cn
A utilities company based in Beijing, China, providing essential services in the energy sector |
2,160 | |||
| 5 |
State Grid Corporation of Chinasgcc.com.cn
An internet company based in Beijing, China that is focused on providing online services and solutions to users |
2,121 | |||
| 6 |
China Energy Engineering Group Co. Ltd.ceec.net.cn
A leading global solutions provider in the power industry, offering comprehensive services from survey and design to project management |
1,989 | |||
| 7 |
CGGC Intl. of Energy Chinaen.gzbgj.ceec.net.cn
A leading Chinese developer and EPC provider specializing in large-scale infrastructure projects, renewable energy, and supporting China's Belt and Road Initiative |
1,757 | |||
| 8 |
COSL - China Oilfield Services Limitedcosl.com.cn
An integrated oilfield service provider with over 50 years of experience offering geophysical, drilling, well, marine, and transportation services globally |
1,602 | |||
| 9 |
CWE (China International Water & Electric Corp.)english.cwe.cn
An international engineering enterprise specializing in water, hydropower, new energy, and infrastructure projects worldwide with a focus on green development and quality services |
1,067 | |||
| 10 |
Hanergy Mobile Energy Holding Grouphanergy.com
Global provider of thin-film solar power, specializing in hydropower, wind energy, high-end equipment manufacturing, PV module production, and research into high-efficiency conversion technologies. |
812 | |||
| 11 |
China Petroleum & Chemical Co., Ltd.sinopec.com
A mining & metals company based in Beijing, offering opportunities for representatives to build relationships, attract followers, and connect with potential customers, brand fans, and employees |
624 | |||
| 12 |
Tesla China 特斯拉中国tesla.cn
A global leader in luxury electric vehicles, focusing on sustainable transportation through innovative technology, zero emissions, advanced safety, performance, and charging solutions |
616 | |||
| 13 |
Datang International Power Generation Co., Ltd.dtpower.com
A China-based electrical and electronic manufacturing company specializing in power generation solutions |
538 | |||
| 14 |
国家能源投资集团有限责任公司ceic.com
A leading state-owned enterprise in China, focusing on coal, thermal power, new energy, hydropower, transportation, chemicals, environmental technology, finance, with extensive global presence |
483 | |||
| 15 |
Veolia Energyveolia.cn
This company promotes a low-carbon circular economy by providing sustainable energy sources, efficient consumption, and waste-to-resource solutions for industries |
480 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Antonoil IFMSantonoil.com
Leading global oilfield technology service provider, offering innovative solutions for oil and gas development worldwide, focused on maximizing asset value and promoting social progress |
468 | |||
| 17 |
Elion Resources Group Co., Ltd.elion.com.cn
A leading group established in 1988, specializing in ecological restoration from deserts to cities, emphasizing clean energy and finance industries |
468 | |||
| 18 |
CGGC-UNPOWER Co., Ltd.cggc-unpower.net
Integrated service provider for various distributed energy solutions and key equipment, specializing in power solutions for gas, solar, wind, storage, marine, and more |
448 | |||
| 19 |
中国核电工程有限公司cnpe.cc
A civil engineering company based in Beijing, China specializing in nuclear power projects |
438 | |||
| 20 |
无mercusuar.uzone.id
A global leader in green and smart energy solutions, providing integrated services in PV, wind power, power electronics, energy internet, and power station construction |
405 | |||
| 21 |
Sinovel Wind Group Co., Ltdsinovel.com
A leading Chinese company specializing in designing, manufacturing, and marketing multi-megawatt wind turbines for various environments, offering competitive pricing and continuous R&D |
391 | |||
| 22 |
Aramco Asiaaramco.com
Representing Saudi Aramco in Asia-Pacific region, providing various services such as marketing intelligence, joint venture coordination, procurement, and public affairs & communications |
391 | |||
| 23 |
中国寰球工程公司hqcec.cnpc.com.cn
An international engineering company under China Petroleum & Natural Gas Group providing end-to-end services for project construction in various industries |
370 | |||
| 24 |
Sinoma Science & Technology Co., Ltd.sinomatech.com
A Beijing-based computer software company specializing in technology solutions and services |
336 | |||
| 25 |
安东石油技术(集团)有限公司antonoil.com
A China-based company specializing in information technology and services, located in Beijing, focused on the oil and gas sector |
314 | |||
| 26 |
Great Wall Drilling Company Limited
An electrical/electronic manufacturing company based in Beijing, China, specializing in drilling services |
213 | |||
| 27 |
Gd Power Development Co., Ltd600795.com.cn
An electrical and electronic manufacturing company located in Beijing, China, specializing in power development and related technologies |
190 | |||
| 28 |
Creative Distribution Automation Co., Ltdcreat-da.com.cn
A high-tech enterprise providing advanced technology, products, and services for the energy industry, focusing on green clean energy solutions and national electricity reform policies |
182 | |||
| 29 |
DAELIM BELEFIC Groupdaelimtransformer.com
Manufacturer of CSA, ANSI/IEEE, cUL, and UL-listed transformers Specializing in customized solutions for utility, data centers, renewable energy, and other industries |
69 | |||
| 30 |
Beijing CEI Technology Co., Ltd.bjzdfy.com.cn
The company specializes in water electrolysis hydrogen/oxygen generator design, production, and related hydrogen energy solutions with strategic partnerships and extensive experience |
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 Nov 11, 2026.
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