v2.13.0

Most important additions and changes relate to the following topics:

• Add terms for heat planning specific technologies.
• Remove "high-voltage" from the definition of AC line.
• Change labels of common reporting format, hardware, nuclear electric hydrogen.

Main developers: @stap-m @amanda-wein @schwarzatoffis @NormanZielke @areleu

A comprehensive list of additions, changes and deletions can be found at https://github.com/OpenEnergyPlatform/ontology/blob/master/CHANGELOG.md

v2.12.0

Most important additions and changes relate to the following topics:

• Reworked the energy transformation axioms for improved soundness.
• Added terms to describe critical infrastructure
• Added new subclasses of boiler

Main developers: @stap-m @b-gehrke @Ludee @amanda-wein @f-innatech @schwarzatoffis @areleu

A comprehensive list of additions, changes and deletions can be found at https://github.com/OpenEnergyPlatform/ontology/blob/master/CHANGELOG.md

v2.11.0

Most important additions and changes relate to the following topics:

• Add new classes for grid infrastructure
• Add new classes for the co-simulation scenarios
• Many small bugfixes and improvements

Main developers: @stap-m @b-gehrke @Ludee @amanda-wein @f-innatech @schwarzatoffis

A comprehensive list of additions, changes and deletions can be found at https://github.com/OpenEnergyPlatform/ontology/blob/master/CHANGELOG.md

v2.10.0

Most important additions and changes relate to the following topics:

• uo:unit has been removed and oeo:physical unit is used equivalently instead.
• the hierarchy of energy transformation has been aligned to the imported meno:energy transformation

Main developers: @stap-m @b-gehrke @areleu @Ludee @carstenhoyerklick @LillyG901 @ColinHDev @amanda-wein

A comprehensive list of additions, changes and deletions can be found at https://github.com/OpenEnergyPlatform/ontology/blob/master/CHANGELOG.md

v2.9.0

Most important additions and changes relate to the following topics:

• Added voltage classification system to describe grids.
• Added multiple new renewable energy and storage technology subclasses.
• Included imports from the Relations Ontology and the Common Core Ontologies.
• Added further scenario subclasses.

A comprehensive list of additions, changes and deletions can be found at https://github.com/OpenEnergyPlatform/ontology/blob/master/CHANGELOG.md

v2.8.0

Most important additions and changes relate to the following topics:

• Updated the base IRI from http://openenergy-platform.org to https://openenergyplatform.org
• Imported object sub-properties of is about and their inverses from the CommonCoreOntologies
• introduction of grid component role and energy transmission function and energy distribution function

A comprehensive list of additions, changes and deletions can be found at https://github.com/OpenEnergyPlatform/ontology/blob/master/CHANGELOG.md

v2.7.0

Most important additions and changes relate to the following topics:

• import some classes from CCO event ontology, MENO and STATO
• add classes for legislation and specific region types and roles
• add some predicates to complete the open energy knowledge graph, including some shortcut relations with sparql queries
• change the licence to a dual licensing CC0-1.0 OR MIT
• add REUSE license check and copyright info

A comprehensive list of additions, changes and deletions can be found at
https://github.com/OpenEnergyPlatform/ontology/blob/master/CHANGELOG.md#270---2025-03-06

v2.6.0

Most important additions and changes relate to the following topics:

• introduction of the "study descriptor" annotation for the oekg (#1950)
• introduction of the oeo-tasks module (#1940). The module is not (yet) imported into oeo.omn / oeo-full, though. Its purpose is to descripe tasks and common workflows of the energy systems modelling domain. The first set of tasks focus on wind turbine placement. The module may be extended in the future.
• introduction of several aspects of modelling uncertainties

A comprehensive list of additions, changes and deletions can be found at
https://github.com/OpenEnergyPlatform/ontology/blob/master/CHANGELOG.md#260---2024-12-06

v2.5.0

Most important additions and changes relate to the following topics:

• German labels have been added to many classes in addition to the English main labels.
• Some quantity / quantity values pairs have been updated, amongst others prize, cost and other socioeconomic entities.
• Distinguish between physical units (equivalent to uo:unit) and other units.
• Policy instrument functions were introduced to enable a multi-hierarchical structure of policy instruments.
• To track the OEO history consistently, the IAO annotation "term tracker item" has been replaced by a new oeo-specific annotation "term tracker annotation".
• The following classes and relations have been made obsolete: "has bearer" which was replaced by the RO relation "characteristic of", "economic value", "economic value of" and "has economic value".

A comprehensive list of additions, changes and deletions can be found at
https://github.com/OpenEnergyPlatform/ontology/blob/master/CHANGELOG.md#250---2024-09-24

v2.4.0

Most important additions and changes relate to the following topics:

• SKOS annotations: skos:closeMatch, skos:exactMatch, skos:relatedMatch
• change of sector concepts and introduction of new object properties for subsectors

A comprehensive list of additions, changes and deletions can be found at
https://github.com/OpenEnergyPlatform/ontology/blob/master/CHANGELOG.md#240---2024-07-01