2.11 Release

IDAES 2.11 Release Notes

Start with our online documentation to get started with install instructions, examples, etc.

The IDAES 2.11 release includes several updates and improvements. Key changes include:

New Features

• Pipe Unit Model: A new pipe unit model has been added to the IDAES library.
• Structured Flowsheet Wrapper Utility: A new utility has been added to provide a structured wrapper for flowsheets.
• Utility Functions for PrOMMiS: New utility functions have been added to support PrOMMiS.

Model Updates

• Helmholtz Ammonia: A new Helmholtz equation of state model for ammonia has been added.
• Subcritical Powerplant Report Method: A bug has been fixed in the subcritical powerplant report method.

Code Improvements

• Python 3.9 Support: Support for Python 3.9 has been removed, and the code has been updated to support newer versions of Python.
• Pyomo and Black Updates: The Pyomo requirement has been updated to 6.10.0, and Black has been updated to 26.1.0.
• Pre-commit Hook Update: The pre-commit hook has been updated with the latest version of Black.

Documentation and Website Updates

• IDAES+ Webpage Link: A link to the IDAES+ webpages has been added to the documentation.

Maintenance and Support

• Header Update: The header has been updated for 2026.
• Deprecation Removal: The usage of deprecated pkg_resources has been removed.

These changes contribute to the overall stability, functionality, and usability of IDAES, and we recommend upgrading to version 2.11 for the latest features and improvements.

Detailed Changes

• Fix issue 1610 by @Lingyan90 in #1709
• updating header for 2026 by @ksbeattie in #1714
• Helmholtz ammonia by @StephenBurroughs in #1637
• End support for python 3.9 by @sufikaur in #1728
• Pipe Unit Model by @dallan-keylogic in #1730
• Remove usage of pkg_resources which has been deprecated by @blnicho in #1732
• Fix issue 1287 bug in subcritical powerplant report method by @Lingyan90 in #1720
• Updating black to 26.1.0 and re-running it by @ksbeattie in #1726
• Updating Pyomo requirement to 6.10.0 by @blnicho in #1731
• Resubmitting pull request for new state definition FpTPxpc with testing by @tannerpolley in #1723
• Utility Functions for PrOMMiS by @dallan-keylogic in #1734
• Add link to IDAES+ webpages in docs by @dangunter in #1735
• Structured flowsheet wrapper util by @dangunter in #1702
• Update pre-commit hook with updated version of black (26.1.0) by @sufikaur in #1740
• Update requirements previously pinned for 3.9 support by @sufikaur in #1737

New Contributors

• @StephenBurroughs made their first contribution in #1637

Full Changelog: 2.10.0...2.11.0