Isothermal Compressed Air Energy Storage with Solar and Load Forecasting Integration


SCH Number
Public Agency
California Energy Commission
Document Title
Isothermal Compressed Air Energy Storage with Solar and Load Forecasting Integration
Document Type
NOE - Notice of Exemption
Document Description
LightSail Energy would pilot test an isothermal compressed air energy storage (ICAES) system for use in integrating renewable energy and providing grid support. The project would consist of a 200kW ICAES unit with approximately 800kW hours of usable energy storage and would be capable of charging from an existing electrical infrastructure to provide load following peak demand. The equipment consists of a compressor/expander, custom-designed carbon composite high-pressure air tanks, along with balance of plant (BOP) components such as power electronics and smart inverters would be located on concrete pads and standard Best Management Practices (BMPs) would be installed to reduce runoff. This project aims to provide ratepayer benefits to greater electricity reliability, lower cost, and lower GHG emissions by using energy storage to support increased use of renewable energy, while simultaneously reducing strain on the electric grid.

Contact Information

David Chambers
Agency Name
California Energy Commission
Contact Types
Lead/Public Agency


La Jolla
San Diego

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15301, 3, 4 & 6
Reasons for Exemption
Construction and location of limited numbers of new, small facilities or structures; installation of small new equipment and facilities in small structures; and the conversion of existing small structures from one use to anotherr where only minor modifications are made in the exterior of the structure.

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

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