Release notes for MUSE v1.4.3 (June 25, 2025)

These are the main changes in MUSE v1.4.3.

Small change to the calculation of commodity prices (#728)

  • Fixes an issue where prices would sometimes rise to extremely high levels cause by under-utilized assets

  • See #728 for more details

Small change to the carbon budget algorithm to prevent extremely high carbon prices (#733)

  • A new parameter called price_penalty has been introduced, which aims to limit carbon price rises in scenarios where the carbon budget cannot be reached

  • Please see documentation here, and see #733 for more details

Removed “Fuel”, “EndUse” and “”ScalingSize” parameters from technodata files (#715 and #729)

  • These parameters are either not required, or can be inferred from other input data (e.g. commodity in/out data)

  • A deprecation warning will be raised if any of these columns are present in your technodata files