Liquid Air Energy Storage (LAES)
Reliable & Cost-Effective Long Duration Energy Storage
Liquid Air Energy Storage (LAES) technology uses a freely available resource - air - cooled and stored as a liquid. When energy is needed, the liquified air is converted back into a pressurized gas which drives turbines to produce electricity. LAES is ideal for replacing fossil fuel-based power plants by providing long-duration storage in renewable power systems. It offers cost-effective supply-demand balancing besides ancillary services, such as grid stability, inertia, and reactive power.
We provides LAES as a turnkey EPC solution, including initial feasibility analysis and technology comparisons, optimal plant sizing, design, engineering, procurement, construction and commissioning.
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- 1Competitive energy storage in large scale
A LAES plant typical size is 50 MW discharge capacity, 300 MWh storage, which translates to 6 hours of storage capacity. As the storage duration increases, more tanks are added at a relatively low cost, making the LAES technology increasingly competitive and scalable. Besides, the plant can support the re-energizing of a grid after a total black-out.
- 2Ancillary services to support grid operation and stability
As the share of renewable energy increases in power systems, grid stability becomes a growing concern. Fossil-based power plants with large spinning masses are replaced by inverter-connected power generation, such as solar PV and wind, reducing grid inertia and short circuit levels.
A LAES plant can provide a range of ancillary services, such as:
- Grid inertia, reducing the need for system operators to procure "Fast Frequency response" reserves, thereby providing an overall more economical system;
- Continuous reactive power compensation and increased short circuit levels in the area it is connected, reducing losses and improving grid reliability;
- Dynamic upward power regulation during plant charging and downward regulation during plant discharge.
- 3Performance longevity
The design lifetime of a LAES plant is typically 30 years, during which the performance can be maintained at high levels with negligible degradation over time.
- 4Flexible siting with a small footprint
With a small footprint and a high degree of freedom in siting, a LAES plant can be employed at a heavily loaded node in the grid. It can also be used in grid locations with high power flow but low short circuit level - as typical for inverter-connected generation or direct current (DC) links - improving grid strength.