China Dominates Global BESS Deployments in May with 11.2GWh
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China has solidified its lead in the global Battery Energy Storage System (BESS) market, achieving 4.3GW/11.2GWh in deployments during May. This includes a significant 1GWh flow battery system and represents over three-quarters of the total grid-scale BESS deployments worldwide for that month, as reported by market intelligence firm Rho Motion in its Battery Energy Stationary Storage Monthly Database.
This May figure is more than four times the amount of energy storage that was brought into operation in China the previous month. In total, 88 grid-scale projects were launched globally in May, amounting to 5,580MW of power and 15,379MWh of energy storage capacity, which is a 59% increase compared to May 2024.
### Regional Breakdown
In terms of energy storage capacity, China accounted for 73%, followed by North America at 17%, Europe at 6%, and Oceania (primarily Australia) at 3.4%. Europe deployed 339MW/885MWh, while North America added 673MW/2,692MWh. A significant portion of Europe’s deployments is attributed to a 500MWh system commissioned by Advance Green Energy AD in Bulgaria, which is touted as the largest in Europe. Smaller projects also came online in Denmark and Finland.
In North America, the Oneida BESS in Ontario, Canada, developed by Northland Power, contributed to a substantial part of the figures, alongside two projects from Leeward Renewable Energy (LRE) in California. Notably, no new projects were reported in South America this month, in contrast to May when Chile represented nearly a quarter of the world’s deployments.
### Year-to-Date Overview
According to Rho Motion, China accounts for 62% of grid-scale deployments year-to-date (YTD).
### Notable Projects
The largest BESS project that commenced commercial operations in May was the Chengde Longhuaxian Longhuazhen Yujigoucun Storage Project in Hebei, China, with a capacity of 300MW/1,200MWh. Two additional 1GWh projects followed closely, one of which was the Oneida BESS in Canada. The other significant project, the Changji Jimusaerxian Solar + Vanadium Flow Storage Project in Xinjiang, China, stands out for utilizing a flow battery system instead of the commonly used lithium-ion batteries. This project integrates 1GW of solar power with a 200MW/1GWh flow battery system from Rongke Power, a company that has previously worked on some of the largest flow battery projects.
Rho Motion also noted an increasing trend of projects combining sodium-ion and lithium-ion LFP (lithium iron phosphate) batteries, typically with a 10:90% ratio. One such project, which came online earlier this year, features a 200MW/400MWh capacity with 20% sodium-ion and 80% lithium-ion batteries.
Overall, the global pipeline for BESS projects has seen substantial growth, with 324.9GWh announced in the first five months of 2025, marking a 74% increase compared to the same period last year.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/china-leads-global-battery-energy-storage-deployments-in-may-with-11-2gwh-total/
