What is Energy Vault EVX gravity-energy storage system (GESS)?

Energy Vault has connected its 25 MW/100 MWh EVx gravity-energy storage system (GESS) in China. Once provincial and state approvals are obtained to start operating, it will become the world’s first commercial, utility-scale, non-pumped hydro GESS.

How does The EVX gravity storage system work?

The EVx gravity storage system works by raising and lowering concrete blocks to store and release potential energy, and will store 100MWh of energy, which it can deliver at 25MW.

What is gravity storage?

Gravity storage has been proposed by a number of players, as a way to store solar and wind energy that has been generated at times when demand is low. On a sunny day, for instance, a solar farm's output could be stored as potential energy by raising concrete blocks.

Where is Energy Vault EVX GESS located?

Gravity storage system provider Energy Vault ’s first commercial EVx GESS has been connected to the grid in China. Earlier this week, the company confirmed that the 25 MW/100 MWh EVx system, located in Rudong, China's Jiangsu province, was connected in December 2023, enabling full commissioning by State Grid Corp. of China.

Could gravity storage help balance a wind farm's electricity output?

Switzerland-based Energy Vault says it has built a large gravity storage installation in China which will help balance the electrical output of a wind farm, and it is now being "commissioned" before connection to the grid.

How will Energy Vault support China's national energy grid?

Energy Vault said that upon completion, the systems will support the balancing of China’s national energy grid through the storage and delivery of renewable energy. The Rudong and Zhangye projects have been designated as new energy storage pilot demonstration projects by China’s National Energy Administration.