Antares Xpansion offers two Unit Commitment (UC) modes: fast and accurate.
- When fast mode is selected, Antares Simulator automatically enforces Economy simulation mode.
- When accurate mode is selected, Antares Simulator automatically enforces Xpansion simulation mode.
Following screenshot is from Xpansion documentation:

Currently, in Antares Web, the output folder naming conventions for Antares Xpansion simulations do not align with their intended purpose:
- If the fast UC mode is used, the output folder extension is .eco. However, this extension is typically associated with Antares Simulator’s Economy simulation mode, making it an inappropriate choice for Xpansion outputs.
- If the accurate UC mode is used, the output folder extension is .adq (short for "adequacy"). This extension is generally reserved for Antares Simulator’s Adequacy simulation mode, which does not correspond to Xpansion.
To maintain clarity and avoid confusion between Antares Simulator and Antares Xpansion studies, the recommended output folder extension for Antares Xpansion simulations should be .exp (short for "Xpansion").
Antares Xpansion offers two Unit Commitment (UC) modes: fast and accurate.
Following screenshot is from Xpansion documentation:
Currently, in Antares Web, the output folder naming conventions for Antares Xpansion simulations do not align with their intended purpose:
To maintain clarity and avoid confusion between Antares Simulator and Antares Xpansion studies, the recommended output folder extension for Antares Xpansion simulations should be .exp (short for "Xpansion").