The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- MaximumValue (3 members)
- TimeStampAlignment (0 members)
- PhotovoltaicCell (0 members)
- Abteilung (0 members)
- EnergyTransformation (14 members)
- GaseousSyntheticFuel (3 members)
- AreaUsageType (0 members)
- CompressedGasFuelRole (0 members)
- NuclearFission (0 members)
- SpeciesSubsetOntologyModule (0 members)
- GenerationTimeSeries (1 member)
- Charging (0 members)
- ScenarioBundle (0 members)
- ElectricityTransshipmentModel (0 members)
- OSWafa15d02b4055323aa0183f1baa7bddf (1 member)
- SequenceNumber (0 members)
- Candela (0 members)
- CollectionInterfaceHint (0 members)
- PassengerTrain (0 members)
- EnergyTransformationUnit (10 members)
- Markdown (0 members)
- PowerCapacity (3 members)
- DegreeCelsius (0 members)
- StateOfMatter (0 members)
- Pixel (0 members)
- CompressedGasTruck (0 members)
- CubicMeterPerKilogram (0 members)
- SpaceRequirement (3 members)
- MineralOilProduct (5 members)
- DieselFuelRole (0 members)
- HydroPowerPlant (5 members)
- EmailAddress (0 members)
- FissileMaterialEntity (1 member)
- Project (1 member)
- Conventional (1 member)
- TypicalPeriod (2 members)
- TemperatureChangingProcess (0 members)
- GaseousFossilFuel (4 members)
- Picogram (0 members)
- FluorinatedGreenhouseGas (4 members)
- Norm (0 members)
- Institution (0 members)
- EnergyMarketModel (0 members)
- Pint (0 members)
- Forecast (0 members)
- VoltPerMeter (0 members)
- System (3 members)
- Ounce (0 members)
- MicrolitersPerMinute (0 members)
- Simulation (0 members)