The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- household sector (0 members)
- Base Quantity Kind (6 members)
- realizable entity (3 members)
- economic stock potential (0 members)
- volatility (0 members)
- yard (0 members)
- mass density unit (11 members)
- gas grid (0 members)
- electric motor (1 member)
- amortisation time (0 members)
- reservoir hydro storage power plant (0 members)
- united states customary cup (0 members)
- steam reforming (0 members)
- investment cost (5 members)
- grid component link (1 member)
- lux (0 members)
- curie (0 members)
- dam (0 members)
- power-to-fuel system (2 members)
- energy storage level (0 members)
- potential energy storage function (0 members)
- marine wave energy converting unit (0 members)
- microgray (0 members)
- fuel supply system (0 members)
- property cost (0 members)
- utilisation value (2 members)
- subregion (1 member)
- surface (1 member)
- 2D Pixel Coordinates (2 members)
- final energy carrier disposition (0 members)
- degree Fahrenheit (0 members)
- Optical Microscopy (1 member)
- meteorological year (0 members)
- Dicke (2 members)
- airplane (0 members)
- mega (0 members)
- Magnetic (0 members)
- energy balance (0 members)
- Circular (0 members)
- export price (0 members)
- mineral oil (2 members)
- gross domestic product (0 members)
- micromole (0 members)
- biogasoline (0 members)
- hydro energy transformation (1 member)
- End-Breite (0 members)
- chemical energy (2 members)
- energy storage unit (1 member)
- Grant (1 member)
- gas engine (1 member)