What is the round-trip efficiency of CAES?

Diabatic CAES (burns gas to reheat compressed air): 40–55%. Adiabatic CAES (stores compression heat): 60–75%. Advanced isothermal CAES: 65–75%. All lower than pumped hydro (75–82%) but cheaper for some geologies.

What underground formations are suitable for CAES?

Salt caverns (best — impermeable, large), depleted gas fields, and hard rock caverns can store compressed air at 40–100 bar. Aquifer storage is possible but risks contamination.

How large a CAES system is needed for grid storage?

Existing CAES plants (Huntorf, Germany; McIntosh, Alabama) are 100–300 MW with 4–20 hours discharge duration. Next-generation small CAES (1–10 MW) is being developed for distributed storage.

Compressed Air Energy Storage (CAES) Efficiency Calculator

Calculate compressed air energy storage round-trip efficiency, storage volume, and power output. Compare diabatic, adiabatic, and isothermal CAES systems.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)

σy — Normal Stress Y (MPa)

τxy — Shear Stress (MPa)

⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.

How to Use

Enter the values for the patient or scenario you are assessing. Calculate compressed air energy storage round-trip efficiency, storage volume, and power output. Compare diabatic, adiabatic, and isothermal CAES systems. Use the caes efficiency result to inform your clinical assessment.

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Frequently Asked Questions

What is the round-trip efficiency of CAES?

What underground formations are suitable for CAES?

How large a CAES system is needed for grid storage?