Energy Storage Technology Sector

In response to the challenges of geographical dependency of high-pressure gas storage in compressed air energy storage (CAES) and the low-pressure high-density storage in closed-loop compressed CO₂ energy storage (CCES), the adsorption-based compressed CO₂ super/transcritical energy storage technology is proposed. This technology enables high energy storage density on the high-pressure side (P=10 MPa, 10.5 times that of compressed air) and high gas storage density on the low-pressure side (P=0.1 MPa, 76.9 times that of atmospheric CO₂). The land occupation and construction cost of the adsorption-based gas storage system are only 1/8 and 1/2 of those of the high-pressure tank clusters in CAES systems, respectively. The technology can be applied in four scenarios: large-scale new energy bases, energy storage-type zero-grid-export thermal power plants, zero-carbon park integrated energy systems, and underwater constant-pressure energy storage. A 2 MW electrical + 5 MW thermal demonstration project has been constructed at China Datang Group's Harbin No.1 Thermal Power Plant.