What’s new

Next release

Changes to Investment and fixed costs (tools.costs)

  • Fix jumps in cost projections for technologies with first technology year that’s after than the first model year (PR #186).

  • Change the use of base_year to mean the year to start modeling cost changes (PR #186).

  • Update cost assumptions for certain CCS technologies (PR #186).

  • Change the default fixed O&M reduction rate to 0 (PR #186).

  • Modify to use 2023 release of IEA WEO data and to use 2022 historic data for the base year (PR #187).

  • Change the default final year to 2110 (PR #190).

v2024.4.22

v2024.4.2

v2024.1.29

v2023.11.24

Migration notes

Update code that imports from the following modules:

  • message_ix_models.report.computations → use message_ix_models.report.operator.

Code that imports from the old locations will continue to work, but will raise DeprecationWarning.

Data for MESSAGEix-Nexus (model.water) is no longer included in the PyPI distributions for message_ix_models. This reduces the package size from >20 MB to <5 MB. To automatically download and unpack these data into a local directory, use mix-models fetch MESSAGEix-Nexus.

All changes

v2023.10.16

v2023.9.12

All changes

Deprecations

v2023.9.2

v2023.7.26

v2023.5.31

v2023.5.13

2023.4.2

2023.2.8

2022.11.7

2022.8.17

2022.7.25

2022.5.6

2022.3.30

2022.3.3

2022.1.26

Earlier releases

2021.11.24

2021.7.27

  • Improve caching using mod:genno v1.8.0 (PR #29).

2021.7.22

2021.7.6

2021.4.7

2021.3.24

2021.3.22

2021.3.3

2021.2.28

2021.2.26

2021.2.23

Initial release.