The 25 MW/100 MWh EVx™ Gravity Energy Storage System (GESS) is a 4-hour duration project being built outside of Shanghai in Rudong, Jiangsu Province, China. The EVx™ is under construction directly adjacent to a wind farm and national grid. It will augment and balance China’s energy grid through the shifting of renewable energy to serve the State Grid Corporation of China (SGCC). The system is expected to be fully grid interconnected by the end of 2023 as planned with local grid authorities.
The EVx ™ system is projected to achieve an impressive round-trip efficiency exceeding 80%. This places the new gravity system at the forefront of energy storage efficiency compared to alternative long duration energy storage methods such as mechanical, thermodynamic, compressed air, and flow battery systems. With a projected operational lifespan of 35 years, this project aligns with China's "Zero-Carbon parks" initiative and national "30-60" net carbon neutral plan. This inaugural deployment sets a benchmark for worldwide collaborations in decarbonization technology.
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