As of the end of September 2020, global operational energy storage project capacity (including physical, electrochemical, and molten salt thermal energy storage) totaled 186.1GW, a growth of 2.2% compared to Q3 of 2019. Of this global total, China’s operational energy storage project capacity comprised 33.1GW, a growth of 5.1% compared to Q3 of 2019.
Graph 1: global total operational energy storage project capacity (MW)
Graph 2: China’s total operational energy storage project capacity (MW)
Both in the international market and the Chinese market, pumped hydro storage continued to account for the largest proportion of energy storage capacity totals. Yet the share of pumped hydro has been on a steady decline, with international pumped hydro capacity decreasing 1.9% and Chinese pumped hydro capacity decreasing 3.4% compared to 2019 Q3. In contrast, electrochemical energy storage capacities continued their rising trend, with international capacities increasing by 1.7% and Chinese capacities increasing by 2.7% compared to 2019 Q3. Total global energy storage capacity reached 10,902.4MW, while China’s total energy storage capacity reached 2242.9MW, surpassing the 2GW mark for the first time.
In the first three quarters of 2020 (January – September), global newly operational electrochemical energy storage project capacity totaled 1,381.9MW, an increase of 42% compared to the same period in 2019. Of this global capacity, China launched 533.3MW of newly operational electrochemical storage, an increase of 157% compared to the same period in 2019. In a global comparison, China led the world in new energy storage capacity, comprising 38% of new growth. Among technologies, Li-ion batteries comprised 99% of new capacity both in the global and Chinese market. Among applications, grid-side energy storage was most prevalent globally, comprising over 1/3 of new capacity, while in China renewable energy generation-side projects were most prevalent, comprising 2/3 of new capacity.
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