
Top five energy storage projects in China include1:CGD Group Golmud City Solar Thermal Plant-Molten Salt Thermal Storage SystemMing Yang Smart Energy-Tong Liao Hybrid Project – Battery Energy Storage SystemBaotang Battery Energy Storage SystemHubei Yingcheng Compressed Air Energy Storage System Set ISalt Cavern Compressed Air Energy Storage Phase-IAdditionally, the Chinese government has released a list of 56 new-type energy storage pilot demonstration projects, including lithium-ion battery and compressed air energy storage projects2. [pdf]
According to incomplete statistics from CNESA DataLink Global Energy Storage Database, by the end of June 2023, the cumulative installed capacity of electrical energy storage projects commissioned in China was 70.2GW, with a year-on-year increase of 44%.
Developing energy storage is an important step in China's transition from fossil fuels to renewable energy, while mitigating the effect of new energy's randomness, volatility and intermittence on the grid and managing power supply and demand, he said.
Figure 2: Cumulative installed capacity of new energy storage projects commissioned in China (as of the end of June 2023) In the first half of 2023, China's new energy storage continued to develop at a high speed, with 850 projects (including planning, under construction and commissioned projects), more than twice that of the same period last year.
A compressed air energy storage (CAES) project in Hubei, China, has come online, with 300MW/1,500MWh of capacity. The 5-hour duration project, called Hubei Yingchang, was built in two years with a total investment of CNY1.95 billion (US$270 million) and uses abandoned salt mines in the Yingcheng area of Hubei, China’s sixth-most populous province.
According to Shu Yinbiao, an academician at the Chinese Academy of Engineering, the utilization rate of new energy storage in China is not high, with the average utilization rate indexes for grid-side, user-side, and mandatory allocation of new energy storage projects reaching 38 percent, 65 percent and 17 percent, respectively.
The cumulative installed capacity of new energy storage projects is 21.1GW/44.6GWh, and the power and energy scale have increased by more than 225% year-on-year. Figure 1: Cumulative installed capacity (MW%) of electric energy storage projects commissioned in China (as of the end of June 2023)

Top energy storage projects in Canada include12:Quinte Compressed-Air Energy Storage SystemOneida Battery Energy Storage SystemGhost Hydroelectric Facility-Battery Energy Storage SystemToronto-Hecate Energy-IESO Energy Storage Procurement Phase 1Eglinton Crosstown Light Rail Transit (LRT) Line – Battery Energy Storage SystemAdditionally, pumped-hydro storage projects are gaining traction in Canada and worldwide2:Northland Power’s proposed 400 MW Mamora Mine Storage facility in Ontario [pdf]
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Energy storage will allow the storage of baseload generation like nuclear and hydro while also supporting the integration of intermittent resources like wind and solar. The governments of Canada and Ontario are working together to build the largest battery storage project in the country.
“The Oneida Energy storage project represents a significant Indigenous-led development that will create good jobs for Canadians while reducing emissions. The Government of Canada is pleased to invest $50 million in building this project with Indigenous partners — resulting in one of the world’s largest battery storage projects.
Accordingly, opportunities for energy storage development and financing are rising, similar to the heightened interest in the solar technologies a decade ago. Such opportunities are motivated by positive regulatory changes and incentive programs.
With the country’s target to reach zero-net emissions by 2050, energy storage is a strategic component in the energy transition and a new economic frontier. Accordingly, opportunities for energy storage development and financing are rising, similar to the heightened interest in the solar technologies a decade ago.

Technology costs for battery storage continue to drop quickly, largely owing to the rapid scale-up of battery manufacturing for electric vehicles, stimulating deployment in the power sector. . Major markets target greater deployment of storage additions through new funding and strengthened recommendations Countries and regions making notable progress to advance development include: China led the market in. . Pumped-storage hydropower is still the most widely deployed storage technology, but grid-scale batteries are catching up The total installed capacity. . While innovation on lithium-ion batteries continues, further cost reductions depend on critical mineral prices Based on cost and energy density. . The rapid scaling up of energy storage systems will be critical to address the hour‐to‐hour variability of wind and solar PV electricity generation. Lithium-ion batteries are currently the most economically viable energy storage solution, but a number of other technologies are being developed, such as compressed air, superconducting magnets, underground pumped storage and hydrogen storage. [pdf]
Most of the world's grid energy storage by capacity is in the form of pumped-storage hydroelectricity, which is covered in List of pumped-storage hydroelectric power stations. This article list plants using all other forms of energy storage.
The U.S. has 575 operational battery energy storage projects 8, using lead-acid, lithium-ion, nickel-based, sodium-based, and flow batteries 10. These projects totaled 15.9 GW of rated power in 2023 8, and have round-trip efficiencies between 60-95% 24.
Energy storage is a potential substitute for, or complement to, almost every aspect of a power system, including generation, transmission, and demand flexibility. Storage should be co-optimized with clean generation, transmission systems, and strategies to reward consumers for making their electricity use more flexible.
With declining technology costs and increasing renewable deployment, energy storage is poised to be a valuable resource on future power grids—but what is the total market potential for storage technologies, and what are the key drivers of cost-optimal deployment?
Other storage technologies include compressed air and gravity storage, but they play a comparatively small role in current power systems. Additionally, hydrogen – which is detailed separately – is an emerging technology that has potential for the seasonal storage of renewable energy.
Storage enables electricity systems to remain in balance despite variations in wind and solar availability, allowing for cost-effective deep decarbonization while maintaining reliability. The Future of Energy Storage report is an essential analysis of this key component in decarbonizing our energy infrastructure and combating climate change.
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