A flywheel energy storage system functions like a mechanical battery, storing energy in the motion of a spinning mass. This is similar to how a potter's wheel or a spinning top holds energy while in motion.
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By 2030, the global energy storage market is projected to grow at a compound annual growth rate (CAGR) of 21%, with annual energy storage additions expected to reach 137 GW (442 GWh), and we expect that the COP29 Energy Storage and Grids pledge will increase this rate of growth.
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How big is the Energy Storage Market?
The Energy Storage Market size is expected to reach USD 51.10 billion in 2024 and grow at a CAGR of 14.31% to reach USD 99.72 billion by 2029. Read.
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Some forecasts predict a 40-50% reduction in average solar costs by 2030. After a period of inflation-driven price hikes, module prices have recently fallen to historic lows due to the polysilicon supply glut and expanded manufacturing capacity.
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Vanadium redox flow batteries are the most commercially mature LDES technology available in 2026. VRFBs store energy in liquid electrolytes containing vanadium ions in different oxidation states — V²⁺/V³⁺ at the anode, V⁴⁺/V⁵⁺ at the cathode — separated by an ion-exchange membrane.
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