solph v0.5.1: Compliant Converter

Today, oemof.solph v0.5.1, code name “compilant converter” has been released. (Package at PyPITag at GitHub). The most noteworthy addition is a new (still experimental) feature multi-period (dynamic) investment models. The code name refers to a small but maybe more evident change: The component Transformer is renamed to Converter. This is because people typically think of electrical devices when they hear the word “transformer”. However, as experienced users of our package know, the Transformer is neither meant to be (only) electrical nor bidirectional (as electrical transformers typically are). Thus, the more generic term “converter” is now used. (Note that we always had the argument “conversion_factor”.) To maintain compatibility for v0.5.0, there is a transitional wrapper that still allows to name the component “Transformer”. It will keep telling you about the upcoming change, though. Another usability feature is the presentation of the examples as part of the documentation. Also, we fixed error when calling oemof_installation_test as a console script. It turned out to confuse quite a few new users that it did not work as documented in the previous release.

We hope to have a fair balance between improvements in usability and new (experimental) features to make this an exciting release for all kinds of users. For us, it definitely is.

oemof.tabular 0.0.3: New release on PyPI

We are happy to announce that we have released a new version of oemof.tabular. Oemof.tabular allows to create energy systems from tabular datapackages, which makes it easy to build models without writing a lot of code.

The focus of the release has been the adaption of tabular to oemof.solph 0.4.5. The following changes have been made:

  • Adjusted to new oemof.solph structure.
  • Allowed definition of costum foreign keys. Keys and related descriptors are now read from config files (.json) and can be adopted by setting environment variables using custom config files.
  • Added constraint tests for most facades.
  • Reduced number of imported packages.
  • Cleaned up the badges in README.
  • Moved CI services to GitHub actions.

The following issues have been fixed:

  • Fixed Link by not setting constraints that limit direction.
  • Fixed storage investment with existing capacities
  • Introduced a conditional to fix error when running datapackages with expandable links.
  • Fixed typo in the attribute variable_costs in
  • Introduced marginal costs for both output flows instead of only one to avoid elimination of energy.

A detailed summary can be found here.