Main content:
According to the global ranking of energy storage system shipments and related data, the global energy storage system shipment volume reached 240 GWh in 2024, a year-on-year increase of over 60%, and the growth trend is still on a high-speed track.
In this article, the top 10 energy storage system companies of AC side in the world will be introduced, from basic information to latest news about these companies.
Top 10 energy storage system companies of AC side in the world
In terms of market, Chinese enterprises are not exactly the same as American ones. The basic market of Chinese enterprises is the domestic market, gradually extending overseas, while American enterprises are supported by the North American market and gradually expanding into Europe, the Middle East, Africa, and the Asia Pacific region.
Research institutions predict that by 2025, the frequency and intensity of direct confrontation between Chinese and American manufacturers will continue to increase.
The following is the list of the top 10 energy storage system companies of AC side in the world in 2025, for you to know more about energy storage system market in the world.
|
Ranking |
Company |
|
1 |
Tesla |
|
2 |
Sungrow |
|
3 |
CRRC Zhuzhou Institute |
|
4 |
Fluence |
|
5 |
HyperStrong |
|
6 |
Evision Energy |
|
7 |
Powin |
|
8 |
NextEra Energy |
|
9 |
Canadian Solar |
|
10 |
SCETL |
Tesla
| Company website | https://www.tesla.cn/ |
| Founded | 2003 |
| Company headquarter | Texas, USA |
Company overview
Tesla, the head of top 10 energy storage system companies of AC side in the world, It is a multinational company in the electric vehicle and clean energy industry. In addition to popular electric vehicles, it has also launched battery products such as Powerwall, Powerpack, Megapack, and gradually opened factories in China, Germany, South Korea, and other places.
Main products
Tesla is deeply involved in the vehicle manufacturing and renewable energy industries, producing and selling electric vehicles, solar panels, and energy storage equipment and system solutions.
Company updates
Tesla's Shanghai energy storage super factory will officially start production in February 2025, with a production capacity of up to 40GWh. Tesla also stated that it expects the installed capacity of its energy system to achieve at least 50% year-on-year growth by 2025. This means that its competition with Sungrow will add another bargaining chip.
Sungrow
| Company website | https://en.sungrowpower.com/ |
| Founded | 1997 |
| Company headquarter | Anhui Province, China |
Company overview
Sungrow is a national high-tech enterprise dedicated to the development and utilization of new energy. Sungrow focuses on the fields of photovoltaics, wind power, wind solar hydrogen storage, and multi energy integration, providing comprehensive solutions covering the entire life cycle of new energy development, including system research and development, development investment, design and construction, and operation management. It ranks among the top 10 energy storage system companies of AC side in the world.
Main products
Sungrow is a supplier of photovoltaic inverters and energy storage systems, with energy storage services covering household, commercial, and large-scale energy storage systems. Photovoltaic inverters, energy storage converters (PCS), and energy storage systems are the main products.
Company updates
On March 5, 2025, at the 20th China (Jinan) International Solar Energy Utilization Conference and the 4th China (Shandong) New Energy and Energy Storage Application Expo, Sungrow unveiled its PowerStack 255CS industrial and commercial energy storage new product, introducing the concept of all-weather comprehensive efficiency for the first time.
CRRC Zhuzhou Institute
| Company website | https://www.crrcgc.cc/zzs/ |
| Founded | 1959 |
| Company headquarter | Hunan Province, China |
Company overview
CRRC Zhuzhou Institute is a subsidiary of CRRC, which has rapidly developed in the field of energy storage system integration in recent years and has become a leading player in the domestic large storage market. The energy storage business entered CRRC Zhuzhou Institute in 2019 and currently has over 7000 R&D professionals. Based in the fields of transportation and energy, it has accumulated three core technologies of "devices, materials, and algorithms", and has created eight industrial sectors including rail transit, new materials, new energy, power electronic devices, automotive electric drives, marine equipment, industrial electrical, and smart rail express systems.
Main products
Energy equipment industry: including new energy wind power industry, new energy photovoltaic industry, and new energy energy storage industry. The new energy storage industry includes businesses such as energy storage system integration and energy storage EPC.
Company updates
In September 2024, CRRC Zhuzhou Institute launched a boost converter integrated machine with a capacity of ≥ 6.9MW, an energy storage battery compartment with a capacity of ≥ 6.9MWh, and a supporting EMS, which can bring customers a more efficient, safe, intelligent, and flexible full scene energy storage integrated solution.
Fluence
| Company website | https://fluenceenergy.com/ |
| Founded | 2018 |
| Company headquarter | Virginia, USA |
Company overview
Fluence is an energy storage system integrator jointly established by Siemens and AES. It is a star energy storage company in the United States and one of the top 10 energy storage system companies of AC side in the world Aim to develop large-scale modular energy storage hardware and related software to achieve grid connected and off grid energy storage.
Main products
Our main business is to provide distributed energy and energy storage solutions worldwide.
Company updates
In 2025, Fluence announced the launch of its latest grid level battery energy storage system solution, Smartstack, which is a high energy density AC/DC integrated energy storage system with a voltage level of 1500V. The system uses 314Ah battery cells and a single set of energy storage capacity can reach up to 7.5MWh. The energy density is about 30% higher than the current AC/DC integrated energy storage systems on the market.
HyperStrong
| Company website | https://www.hyperstrong.com/en/ |
| Founded | 2011 |
| Company headquarter | Beijing, China |
Company overview
HyperStrong is a leading player in energy storage system integration in China and one of the top 10 energy storage system companies from the AC side in the world HyperStrong mainly focuses on the research and development, production, and sales of electrochemical energy storage systems, providing a full range of energy storage system products and one-stop integrated solutions for customers in the "source grid load" industry, including traditional power generation, new energy generation, smart grid, and end power users.
Main products
The main product is electrochemical energy storage system.
Company updates
As of March 2025, HyperStrong has participated in the construction of over 300 energy storage projects, with a capacity of over 25GWh already in operation, becoming a leader in promoting low-carbon energy transformation. The application of domestic and foreign projects such as independent energy storage power plants in Germany, industrial and commercial projects in Sweden, industrial and commercial projects in the Czech Republic, 1GWh ultra large energy storage projects in Xinjiang, China, and semi-solid lithium iron phosphate energy storage power plants in Zhejiang, China, connects the hard power and delivery capabilities of HyperStrong technology.
Evision Energy
| Company website | https://www.envision-group.com/ |
| Founded | 2007 |
| Company headquarter | Shanghai, China |
Company overview
Envision Energy is a globally leading green technology company that spans across multiple green energy sectors, including wind power, energy storage, and green hydrogen. Since its inception, Envision Energy has built a full stack technology capability, including battery cells, and has taken the path of self-developed and self-made full stack technology, believing that this is the ultimate evolution path for energy storage enterprises. In addition, Envision Energy has also developed smart trading solutions, which have gradually been accepted by the industry.
Main products
Energy storage batteries, intelligent wind turbines, energy management platforms.
Company updates
At the end of 2024, Envision Energy announced that it had signed a supply contract with the French EDF Group to provide battery energy storage systems for three independent energy storage projects led by the latter in South Africa. The total installed capacity of the projects is 257 MW/1028 MWh, making it the largest energy storage order in South Africa so far.
Powin
| Company website | https://powin.com/ |
| Founded | 2010 |
| Company headquarter | Oregon, USA |
Company overview
Powin focuses on designing, manufacturing, and operating commercial and utility scale lithium energy storage systems. Powin holds a significant position in the global energy storage market, with operations spanning multiple countries and regions, including the United States, China, and others. It is one of the top 10 energy storage system companies of AC side in the world in 2025
Main products
Stacked Energy Storage System (ESS)： Modular design, capacity can be expanded according to demand, suitable for commercial and public utilities.
Powin Energy Management System (EMS)： Integrated energy management software to optimize the operation of energy storage systems.
NextEra Energy
| Company website | https://www.nexteraenergy.com/ |
| Founded | 1925 |
| Company headquarter | Florida, USA |
Company overview
One of the largest utility companies in the United States and also one of the top 10 energy storage system companies of AC side in the world. Its business covers various forms of electricity production such as wind, solar, natural gas, and nuclear, and operates through multiple subsidiaries.
Main products
Large scale energy storage projects, such as the "Babcock Ranch" project, with a capacity of 100 MW/400 MWh, combined with solar power generation. Energy storage system integration: providing customized energy storage solutions to meet different customer needs.
Company updates
In January 2024, Powin, a US energy storage system integrator, LLC. and Hithium have officially signed a 5GWh energy storage battery framework procurement cooperation agreement.
Canadian Solar
| Company website | https://cn.csisolar.com |
| Founded | 2001 |
| Company headquarter | Ontario, Canada |
Company overview
Recurrent Energy, the global energy subsidiary of Canadian Solar, specializes in global energy business and is a leading developer of utility scale solar and energy storage power plant projects worldwide. With a brand history of 15 years and extensive experience in global project development, the company operates globally. As of March 2025, Recurrent Energy has developed, financed, constructed, and connected approximately 11.5 gigawatts (GWp) of solar power plants and approximately 4.5 gigawatt hours (GWh) of energy storage plants.
Main products
Photovoltaic modules, energy storage battery systems.
Company updates
In 2025, Canadian Solar signed three important agreements with Sunraycer Renewables LLC to provide energy storage supply and commissioning services for two projects in Texas, and plans to provide a total of 315 MWh of energy storage solutions and up to 2 GW of high-efficiency solar photovoltaic modules for multiple projects under Sunraycer.
SCETL
| Company website | https://www.cee-group.cn/ |
| Founded | After 2020 |
| Company headquarter | Shandong Province, China |
Company overview
SCETL is affiliated with China Electric Equipment Group Energy Storage Technology Co., Ltd. It is a state-owned enterprise reform "double hundred enterprise" and also a high-tech enterprise leading in the research and development, production, and sales of energy storage equipment in the industry.
Main products
SCETL's main business covers the development, production, testing, complete sets of equipment, and engineering general contracting of energy storage equipment. Its core products include batteries, PCS (power conversion systems), BMS (battery management systems), EMS (energy management systems), energy storage power stations, and mobile energy storage.
Company updates
In March 2025, SCETL, as the contractor of the Qinghai Treasure Project, will provide 138 battery prefabricated cabins, 35 converter and boost integrated machines, and 1 EMS energy management system for a project with a construction scale of 224.5 MW/889 MWh.
Conclusion
The global energy storage industry is revolutionizing the energy future at an astonishing pace. The top 10 energy storage system companies of AC side in the world not only represent technological breakthroughs and market vitality, but also carry the mission of promoting green transformation. Whether you are a business user or a household consumer, choosing these industry benchmark products and services will be an important step in participating in the energy revolution.
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