| +/- power=sub_station
A substation is a used to step-up or step-down the voltage=* within a electrical power grid and generally linked to the rest of the network by one of more sets of power=lines and which may contains one or more power=transformers. This tag should not be used for facilities where electrical power is produced, for which power=generator tag should be used. See wikipedia article for more information.
How to Map
Nodes can be used for small substations. Areas are better for larger ones using aerial photography to identify their extent. Substations can vary in size from small little buildings the size of a garden shed to much larger installations to size of many football fields.
- name=* The name of the facility
- operator=* The name of the company operating the substation.
- voltage=* The highest voltage of operation within the facility
- area: This is an industrial type area, so something that ties win with the colour for industrial landuse, but darker area
- node: Some sort of symbol that prompts thoughts of electricity. A lightning flash, maybe?
| An outside substation.
The tag is used for transformer-stations or houses like  or  In England it is mainly used for bigger stations like  or  (This is the awareness of an international discussion in the osm irc-channel.)