A DIFFERENT KIND OF STRATEGIC ENERGY RESERVE

COMPRESSED AIR ENERGY STORAGE

MEET CAES

CAES is a proven, grid-scale technology that stores energy by compressing air and storing it underground. When power is needed, the air is released, heated, and expanded through a turbine to generate electricity.

Long Duration: 48 hours + of energy storage -
far longer than battery technology.

Reliable & Proven: Decades of global operation with a
strong safety and performance record.

HOW CAES WORKS

CAES stores energy when it's abundant and delivers it when it's needed most, helping to keep Alberta's grid reliable, clean, and resilient.

Electricity In: Surplus electricity from the grid powers the compressor.

Compress: Air is compressed and directed underground.

Store: Compressed air is stored in a deep underground salt cavern.

Generate: When electricity is needed, air is released and heated.

Electricity Out: Expanding air spins a turbine to generate electricity.

Back to the grid: Electricity is delivered back to the grid when Alberta needs it most.

FLEXIBLE & DISPATCHABLE: Provides firm, on-demand power to support grid reliability and stability.; 01
COST EFFECTIVE AT SCALE: Designed for large-scale, long-life operation with a low levelized cost of storage.; 02
PROVEN LOWER EMISSIONS: Emits less than 70% of simple-cycle gas turbines and is hydrogen ready.; 03

THE POWER OF COMPRESSED AIR ENERGY STORAGE

Store

Power In

Generate

Power Out

Wellhead

At Surface

Salt
Formation

Naturally Sealed
& Impermeable

Salt
Cavern

Located 1,000+ Metres
Underground

Conceptual Illustration

48+ Years

CAES OPERATION WORLDWIDE

400+ MW

OF CAES CAPACITY GLOBALLY

48 HOURS+

OF ENERGY STORAGE DURATION