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Public-images-osm logo.svg substation = transmission
Legacy National Grid Substation - geograph.org.uk - 39134.jpg
A place to connect and switch power transmission lines which transport power between production and consumption places. Inside voltage is mainly over 100 kV. Show/edit corresponding data item.
Group: power
Used on these elements
should not be used on nodesshould not be used on waysmay be used on areas (and multipolygon relations)should not be used on relations (except multipolygon relations)
Useful combination
Status: approvedPage for proposal

A transmission substation is a place whose main function is to connect and switch transmission lines transmitting power between areas. It is suggested to use this value for substations handling voltages above 100 kV since transmission grids in most parts of the world have a voltage of 110 kV or higher.

A transmission substation may also feed a medium voltage distribution grid (typically having a voltage of less than 100 kV).
Rules to determine transmission or distribution are often local or country-specific, regulatory or contract-ruled between power operators you can still ask to get any accurate knowledge about them.

Substations collecting power from one or more generators of a power plant should be tagged substation=generation.

How to map

See guidelines of power=substation to get more information


Photo Tagging OSM Carto Note
Bleiswijk-380kv-photo.jpg area landuse=industrial
name=380kV Bleiswijk
380kv-bleiswijk-mapnik.png 380 kV substation with three 380/150 kV transformers. Unusual for using outdoor gas insulated switchgear (GIS).