Cooperation between China and the US on gravitational energy storage
Energy Vault has initiated the construction of an innovative energy storage tower that leverages the force of gravity. This groundbreaking project boasts a capacity of 25 megawatts (MW) and 100 megawatt-hours (MWh) and will be situated at a wind farm near Shanghai. The system is anticipated to become operational and grid-connected by the fourth quarter of this year. This venture is a collaborative effort involving Energy Vault, Atlas Renewable, and China Tianying.
This endeavor marks the world’s inaugural commercial-scale implementation of this technology. Prior to this project, Energy Vault has notably conducted a pilot initiative in Switzerland, showcasing an impressive efficiency rate of 75%.
Gravity tower, like hydroelectric power plants?
The newly erected tower by Energy Vault employs surplus renewable energy (from renewable energy sources) to elevate massive concrete blocks, each weighing 35 tons. During periods of heightened electricity demand, the mechanism lowers these blocks to release stored energy.
The tower’s architectural design draws inspiration from the principles of pumped hydroelectric power plants, but it boasts a unique feature: the concrete blocks maintain their capacity over time and can be economically produced, often using materials like mine waste.
To orchestrate the tower’s operations, sophisticated computer systems and advanced visual software are employed to synchronize the loading and unloading cycles. Gravitational energy storage systems are expected to have a lifespan of approximately 30 to 35 years, offering a durable and effective solution for energy storage.
Cooperation between great powers
Eric Fang, CEO of Atlas Renewable, highlights the significance of the project and underscores that its realization was only possible through the remarkable collaboration between teams in the United States and China. This collaboration stands as a symbol of the unity between the two influential nations in their joint effort to combat climate change.
Energy Vault has also revealed its intentions to undertake additional projects of a similar nature in China. Their subsidiary, China Tianying, recently unveiled a contract agreement with the Huailai County People’s Government to construct a 100MWh gravity tower, further demonstrating their commitment to advancing innovative energy storage solutions.