Electricity

Energy Vault completes world’s first gravity energy storage system in China

Energy Vault completes world’s first gravity energy storage system in China

Photo: Energy Vault

Published

August 7, 2023

Country

Comments

comments icon

2 Comments

Share

Published:

August 7, 2023

Country:

Comments:

comments icon

2 Comments

Share

Energy Vault Holdings announced, along with its partners Atlas Renewable and China Tianying, that the world’s first grid-scale gravity energy storage system (GESS), has entered the first phases of commissioning. The EVx system, adjacent to a wind power facility near Shanghai, is expected to be fully grid interconnected in the fourth quarter of 2023.

Energy Vault has taken a new approach to energy storage. Its solutions are based on the fundamental principles of gravity and potential energy. The EVx platform utilizes a mechanical process of lifting and lowering composite blocks to store and dispatch electric power.

The company built a structure consisting of hollow towers. The facility utilizes excess solar power in the system to pull up the weight, creating potential energy. When needed, the blocks are dropped and electric motors generate electricity. The technology is not much different from pumped storage hydropower.

First gravity storage unit in global market

The project was commissioned by China Tianying Group, which signed a contract with State Grid Corp. of China, the country’s main power network operator. The new system is the first in the world that can balance the grid using gravity, Energy Vault pointed out.

The composite blocks can be made cheaply

Through a waste management subsidiary, China Tianying Group can source cheap materials like mining tailings and coal ash. Energy Vault, which was listed in February at the New York Stock Exchange, said the blocks can also be made from dirt from the construction site of the gravity energy storage system itself or, for instance, fiberglass from decommissioned wind turbine blades.

Energy Vault is developing long-duration gravity energy storage tech

The tower is controlled by computer systems and machine vision software that orchestrate the charging and discharging cycles. The new type of battery storage can operate at full power, 25 MW, for up to four hours – the capacity is 100 MWh.

The company expects to boost the efficiency of its EVx system to above 80%

Engineers from Energy Vault claimed they can reach 12 hours and on a gigawatt-hour scale in the forthcoming endeavors. Moreover, the company expects to top the 80% mark in efficiency. It means it would be able to recover four fifths of the electricity that it consumes. The company’s technology would in that case become competitive in the arena with other long-duration energy storage solutions: pumped storage hydropower plants, compressed air and flow batteries.

The demonstration project installed in Switzerland in 2020 achieved 75% efficiency.

China portfolio turned 20 times larger

The investors expect the EVx system in Rudong in Jiangsu province near Shanghai to be fully connected to the grid in the fourth quarter. The location is next to a wind power plant and a transmission power line.

Energy Vault, headquartered in Lugano, Switzerland, revealed in September that it would set up five more EVx gravity energy storage systems in China, with a combined capacity of 2 GWh. Its partners are Atlas Renewable, one of the company’s stakeholders, together with Chinese nongovernmental organization EIPC and China Tianying, which has telecommunications as its core activity.

Comments (2)
Guy / August 24, 2023

I’m very excited to see whether this project lives up to the hype and can deliver the power consistently at over 80% efficiency. If it does it will be a game changer. Green concrete blocks, filled with waste rock, delivering energy without causing carbon dioxide emissions- what’s not to like? Fingers crossed, before the end of this year, there will be some very good news coming from this Chinese project.

Shankar rao / October 29, 2023

Gravity storage of energy is being tried and deployed for large scale needs. Why not for kilowatt hour range which may be affordable in developing countries, operated by foot power. Particularly helpful for non grid connected villages. Flow even in a perennial stream can be utilised to run a micro turbine, which in turn mechanically power a gravity storage device used for generating power as and when required.

Enter Your Comment
Please wait... Please fill in the required fields. There seems to be an error, please refresh the page and try again. Your comment has been sent.

Related Articles

montenegro epcg net conference budva milutin djukanovic

Đukanović: EPCG is implementing three key strategic policies

16 June 2025 - At the opening of the EPCG NET conference in Budva, Miliutin Đukanović announced the start of trial operations at the Gvozd wind farm

serbia naled CBAM analysis jobs

NALED urges action to protect jobs at energy-intensive industries threatened by CBAM

13 June 2025 - The National Alliance for Local Economic Development has called on the state to introduce measures to protect energy-intensive industries

serbia suncarlito beta solar token subotica solar power plant

SunCarlito Beta issues tokens to raise funds for 2.2 MW solar power plant in Serbia

13 June 2025 - Investors can buy 3,402 tokens called Solar Token ST_1, priced at EUR 500 each. The deadline to purchase the tokens is July 9

nuclear power plant reactor edf france

French power prices jump as EDF looks into possible nuclear reactor defect

12 June 2025 - France’s state-owned power utility EDF is investigating apparent corrosion cracks found at the Civaux 2 nuclear reactor.