2/18/2024 0 Comments 2' tee grid types![]() ![]() Lithium-ion battery storage continued to be the most widely used, making up the majority of all new capacity installed. The grid-scale battery technology mix in 2022 remained largely unchanged from 2021. The United States and China led the market, each registering gigawatt-scale additions. Compared with 2021, installations rose by more than 75% in 2022, as around 11 GW of storage capacity was added. Total installed grid-scale battery storage capacity stood at close to 28 GW at the end of 2022, most of which was added over the course of the previous 6 years. Batteries are typically employed for sub-hourly, hourly and daily balancing. Although currently far smaller than pumped-storage hydropower capacity, grid-scale batteries are projected to account for the majority of storage growth world wide. Grid-scale batteries are catching up, however. The majority of plants in operation today are used to provide daily balancing. The world’s largest capacity is found in the United States. Global capability was around 8 500 GWh in 2020, accounting for over 90% of total global electricity storage. The total installed capacity of pumped-storage hydropower stood at around 160 GW in 2021. While progress is being made, projected growth in grid-scale storage capacity is not currently on track with the Net Zero Scenario and requires greater efforts. Additionally, hydrogen – which is detailed separately – is an emerging technology that has potential for the seasonal storage of renewable energy. Other storage technologies include compressed air and gravity storage, but they play a comparatively small role in current power systems. Batteries are the most scalable type of grid-scale storage and the market has seen strong growth in recent years. Pumped-storage hydropower is the most widely used storage technology and it has significant additional potential in several regions.
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