The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- target description (1 member)
- kilovolt-hour (0 members)
- catalytic activity unit (2 members)
- Chemical Object (0 members)
- aerothermal energy (0 members)
- year (0 members)
- X Coordinate (1 member)
- watt per square meter (0 members)
- electrolytic hydrogen (3 members)
- Administrative Area (4 members)
- Compression Test (0 members)
- Measuring Process (0 members)
- count unit (4 members)
- liquid air (0 members)
- Steifigkeit (0 members)
- radian per second per second (0 members)
- solar radiation (2 members)
- Härteprüfung nach Rockwell (0 members)
- milliliter per cubic meter (0 members)
- radiation unit (5 members)
- optimisation model (0 members)
- Address (0 members)
- Radius (1 member)
- urban population (0 members)
- emission market exchange (0 members)
- watt per steradian per square meter (0 members)
- two axis tracked receiving surface (0 members)
- Beschichtungsbezeichnung (0 members)
- OSW1615f1d573fa57899e2c37eb4de9c333 (1 member)
- Index (1 member)
- solar tracking (2 members)
- Method (3 members)
- social cost of carbon emission (0 members)
- oxidation (0 members)
- colliery gas (0 members)
- rate unit (4 members)
- parts per quadrillion (0 members)
- immaterial entity (5 members)
- cubic meter per mole (0 members)
- secondary energy production (1 member)
- thorium (0 members)
- liquefied natural gas vehicle (1 member)
- policy instrument (4 members)
- energy carrier disposition (8 members)
- gas vehicle (3 members)
- software descriptor (1 member)
- transformer (0 members)
- milligram per kilogram (0 members)
- katal per liter (0 members)
- jet fuel vehicle (0 members)