Issues

• Cannot define active in data table

  bug
  calliope-project/calliope#901 · Filter by author jnnr opened on Sep 15, 2026
  4

• Improve catchment of self referential scenarios.

  buggood first issue
  Bug

  calliope-project/calliope#900 · Filter by author irm-codebase opened on Sep 15, 2026
  

• Parameter definitions are silently broadcast to incorrect carriers during preprocessing

  bug
  calliope-project/calliope#899 · Filter by author irm-codebase opened on Sep 10, 2026
  2

• Data table rows and columns should use mappings instead of index order for their operations

  enhancement
  calliope-project/calliope#897 · Filter by author irm-codebase opened on Sep 7, 2026
  1

• Restructure doc placement

  documentation
  Task

  calliope-project/calliope#892 · Filter by author irm-codebase opened on Aug 31, 2026 · 0.7.x
  

• Let HiGHS backend support piecewise constraints

  enhancement
  calliope-project/calliope#890 · Filter by author sjpfenninger opened on Aug 28, 2026 · 0.7.x

• Update example models

  enhancement
  calliope-project/calliope#866 · Filter by author brynpickering opened on May 13, 2026

• Implementing transmission nodes through .csv files requires workaround

  bug
  calliope-project/calliope#859 · Filter by author anedelcu2002 opened on Feb 4, 2026
  4

• sum_next_n and roll don't accept parameters as the offset

  enhancementv0.7
  calliope-project/calliope#827 · Filter by author jmorrisnrel opened on Sep 11, 2025
  1

• cost_investment_flow_cap is considered two times in conversion techs

  discussionhas-workaroundv0.7
  calliope-project/calliope#821 · Filter by author NiklasDenter opened on Sep 5, 2025
  1

• Operate mode fails partway through with ensure_feasiblity enabled

  bughas-workaround
  calliope-project/calliope#805 · Filter by author jmorrisnrel opened on Aug 26, 2025
  5

• Store objective linked to a set of results in the model object on save

  enhancement
  calliope-project/calliope#798 · Filter by author brynpickering opened on Aug 20, 2025 · 0.7.x

• Avoid the need for order in global_expressions

  enhancement
  calliope-project/calliope#794 · Filter by author irm-codebase opened on Aug 18, 2025 · 0.7.x
  1

• Long Calliope build times, even for small models

  v0.7
  calliope-project/calliope#781 · Filter by author fvandebeek opened on Jul 24, 2025
  8

• override_dict accepts a JSON/YAML string with possible unexpected results

  bugv0.6
  calliope-project/calliope#729 · Filter by author brynpickering opened on Dec 12, 2024

• Parquet file format for tabular data

  enhancementv0.7
  calliope-project/calliope#694 · Filter by author cpalazzi opened on Oct 5, 2024 · 0.7.x
  1

• Enable loading Excel files as data tables

  enhancementv0.7
  calliope-project/calliope#693 · Filter by author brynpickering opened on Sep 30, 2024 · 0.7.x
  2

• Re-add links in model definition with v0.7.x format?

  enhancement
  calliope-project/calliope#668 · Filter by author jgu2 opened on Aug 30, 2024
  13

• Is available_flow_cap correct under various settings?

  bug
  calliope-project/calliope#654 · Filter by author sstroemer opened on Aug 7, 2024
  1

• Account for python's optimize mode to enable faster model building

  enhancementv0.7
  calliope-project/calliope#633 · Filter by author irm-codebase opened on Jul 4, 2024 · 0.7.x
  2

• purchased binary variable isn't linked to energy_cap if energy_cap_max/_min/_equals isn't defined

  bughas-workaroundv0.6
  calliope-project/calliope#565 · Filter by author brynpickering opened on Feb 12, 2024

• New object-oriented backend API

  v0.7
  calliope-project/calliope#510 · Filter by author brynpickering opened on Oct 27, 2023 · 0.7.x
  2

• Setting .exists: false for area-competing technologies bugs if not all locations are included

  bughas-workaroundv0.6
  calliope-project/calliope#401 · Filter by author adrienmellot opened on Jan 30, 2023
  1

• memory leaking in calliope (or some dependency)

  has-workaround
  calliope-project/calliope#368 · Filter by author ramaroesilva opened on Aug 5, 2021
  19

• Replace AttrDict with a functionally equivalent dependency

  discussion
  calliope-project/calliope#366 · Filter by author brynpickering opened on Jul 29, 2021 · 0.7.x
  3