Policy support for compressed air energy storage

How can compressed air energy storage improve the stability of China's power grid?

The intermittent nature of renewable energy poses challenges to the stability of the existing power grid. Compressed Air Energy Storage (CAES) that stores energy in the form of high-pressure air has the potential to deal with the unstable supply of renewable energy at large scale in China.

What is compressed air energy storage (CAES)?

1. Introduction Compressed Air Energy Storage (CAES) has emerged as one of the most promising large-scale energy storage technologies for balancing electricity supply and demand in modern power grids. Renewable energy sources such as wind and solar power, despite their many benefits, are inherently intermittent.

How does compressed air energy storage work?

Typically, compressed air energy storage (CAES) uses surplus, low-cost electrical energy (e.g. from renewable power generation) and stores it safely as compressed air, often in underground caverns. Whenever the energy is needed, that stored energy can generate electricity for the grid by passing the air through a turbine.

Can a small compressed air energy storage system integrate with a renewable power plant?

Assessment of design and operating parameters for a small compressed air energy storage system integrated with a stand-alone renewable power plant. Journal of Energy Storage 4, 135-144. energy storage technology cost and performance asse ssment. Energy, 2020. (2019). Inter-seasonal compressed-air energy storage using saline aquifers.

What is energy storage & why is it important?

Energy storage (ES) plays a key role in the energy transition to low-carbon economies due to the rising use of intermittent renewable energy in electrical grids. Among the different ES technologies, compressed air energy storage (CAES) can store tens to hundreds of MW of power capacity for long-term applications and utility-scale.

What is long duration energy storage (LDEs) support scheme?

Long duration energy storage (LDES) support scheme will have eight-hour minimum. First application round opens to well-established technologies, such as lithium-ion battery technology, with at least 100 MW capacity in April 2025. Flow batteries, compressed air, and liquid air likely to progress in second round, says regulator.