Cased-Wellbore Compressed Air Storage for Renewable Energy
Innovative technology as a geo-energy storage system
The Cased-Wellbore Compressed Air Storage (CWCAS) technology is an advanced type of Compressed Air Energy Storage (CAES) process that is designed as a versatile and cost-effective renewable energy storage system. The system uses power from renewable sources to operate a compressor to compress ambient air. The high-pressure air is then stored inside a deep well(s), cased with high-grade steel. When there is a power demand, the compressed air is extracted from the well to generate power with an expander-generator.
Specification Title | Specification Description |
---|---|
Areas of Application
|
Wind and Solar Power Facilities | Remote Communities | Power for Industry, Mines| Re-purposing of Oil & Gas fields
|
Capabilities
|
Cased-Well Drilling and Construction | System Installation | Modelling & Project Development | R & D
|
Depth
|
A well is drilled and a high-grade steel casing is cemented into the wellbore, in a rock mass to a depth of 500 to 1,500 m.
|
Optimisation
|
Energy Capital Cost: CWCAS <$350/KWh vs. Battery Storage ~ $600/KWh
|
Power
|
Storage of up to 10+ MWh per 1,000 m deep well.
|
Pressure class
|
7250+ PSI (50+ MPa)
|
Storage
|
A large well diameter is used at least 30 cm diameter casing. This provides a storage volume of 7 m3/100 m.
|
Temperature
|
200 ºC (392 ºF)
|
Reviews (1)
Sign up or log in to your explorer or platform subscription to get access to the reviews written about this technology.
The Technology Readiness Level (TRL) indicates the maturity level of novel technologies. Learn more about the TRL scale used by us.
[6/9]
Relative Business Impact
Sign up or log in to your explorer or higher plan to get access to all the 1 deployment references.
Last Deployment YearTotal DeploymentsComment