Energy Vault didn’t say when the project will be fully operational, but it will provide more updates on it when the company releases its full-year results on 12 March.

Energy Vault added that its local partners – environmental services and waste management firm China Tianying (CNTY) and developer Atlas Renewable – now have nine other EVx projects underway in China totalling 3.7GWh, of which three have started construction, all 4-hour systems.

They are:

• a 17MW/68MWh project in Zhangye City, Gansu Province, being built adjacent to a renewable energy plant and a national grid interconnection site (pictured above)
• a 50MW/200MWh project in Ziuquan City, Jinta County, Gansu Province
• a 25MW/100MWh project in in Huailai Cunrui Town, Zhangjiakou County, Hebei Province

The Rudong and Zhangye projects have been designated “new energy storage pilot demonstration projects” by China’s National Energy Administration (NEA).

The Rudong project will charge from a nearby wind farm and discharge to the grid while its energy storage medium – composite blocks – will also provide an outlet for CNTY to utilise waste materials like concrete debris and coal ash as part of its waste remediation business.

Energy Vault CEO Rob Piconi discussed the firm’s gravity-based technology – which many are sceptical about – as well as its battery energy storage system (BESS) and green hydrogen projects in a Premium interview article last year.

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