CAES

With 600 MW of installed capacity and 2,400 MWh of storage, the Huai’an Salt Cavern project is now the world’s largest compressed air energy storage (CAES) facility, surpassing the 300 MW/1,500 MWh project commissioned earlier this year that previously held the title.

The new compressor is described as the world’s most powerful single-unit compressed air energy storage (CAES) system, with a maximum discharge pressure of 10.1 MPa and an efficiency of 88.1%.

Researchers have studied the potential of combining photovoltaic systems with compressed air energy storage (CAES) to power a commercial building in South Africa. They found that a co-optimized system could lower total capital costs by 15–20% compared to traditional sequential sizing approaches.

Researchers in China have investigated the long-term stability of horizontally connected salt caverns used for compressed air energy storage. They found about 85% of the existing salt caverns in their home country are are suitable for this configuration.

Zhongchu Guoneng (Beijing) Technology Co., Ltd. (ZCGN) says officials in Sanmenxia, Henan province, have cleared a 700 MW/4,200 MWh compressed air energy storage proposal that is designed to support long-duration grid flexibility as renewable generation increases.

Scientists in the United Kingdom have compiled a new database of adiabatic compressed air energy storage projects. Using this data, they were able to determine the experience rate and identify the conditions under which the technology would be economically viable. According to their findings, costs have declined at a 15% learning rate since 2013.

Researchers in the United Kingdom found that approximately 175 TWh of hydrogen and compressed air storage capacity will be needed to fully decarbonize heating in the United Kingdom. Lead researcher Bruno Cardenas told pv magazine that, when domestic heat demand is 100% electrified, average annual electricity demand and peak load in the grid are 26% and 70% higher than current levels.

Segula Technologies has launched its Remora Stack product, a containerized isothermal air compression storage solution the company claims is 70% efficient.

A state-backed consortium is constructing China’s first large-scale compressed air energy storage (CAES) project using a fully artificial underground cavern, marking a major step in the technology’s commercialization.

Huaneng Group has begun phase two of its Jintan Salt Cavern CAES project in China. It is set to become the world’s largest compressed air energy storage facility with groundbreaking advancements in power output and efficiency.