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Public-images-osm logo.svg power = line
High-voltage power lines supported by towers or pylons.
Group: Power
Used on these elements
should not be used on nodesmay be used on waysshould not be used on areasshould not be used on relations
Useful combination
See also
Status: In use

Illustration of Power.jpg

A power line is carried on power=towers. Three cables are one circuit (except power for train and HVDC). Every circuit has one voltage=* level on which it operate. Draw one way for all circuits connected to one power tower. All lines for 50 kV or more are power=line. For less voltage than this use power=minor_line on power=pole. Use power=cable with location=underground for undergound power supply. name=* should be used for name/number of the line (can be found on power towers).

Power towers have numbers and names on it. Tower numbers increase from start to end point. Names or Numbers for each systems can be found on power towers and are the same at each tower. These belong to the power=line and should be taged on the way itself. Use source=survey if you track them! Poles only carry power=minor_lines. Power towers can also carry power=minor_lines.

How to Map

Draw a Way way and add the power=line to it. The towers that support the power line can be mapped using Nodepower=tower. It is not necessary to tag power lines with a layer=* unless two lines cross over each other.

It is possible to connect power lines to power=portal inside power=substation using power=insulator on the connecting node.
power=terminal is also used at the connection with buildings without a dedicated power tower or portal to support the end of the line.


It is also possible to give some additional and advanced information about power lines :

  • The number of wires=* per conductor.
  • You may look at cables=* for the number of power-carrying conductor (bundles of wires) the line is composed of.
  • circuits=* corresponds to the number of electrical circuits (logical bundles of cables). The tag may be used when the number of physical cables is unknown (often the case for underground cable connections) or when the number of circuits is different from cables=* divided by 3 (or by the number of phases of the line).
Key Value Comment Recommendation
power line It's a power line, normally mapped as a Way. mandatory
voltage <operating voltage> The voltage at which the line is operated recommended
operator <cable operator> The name of the company which operates this power line section recommended
cables <number of cables> The number of different phase conductors for this power line section recommended
circuits <number of circuits> The number of different and separated electrical circuits built within this power line section recommended
wires <wire bundle per conductor> The bundle form factor for each conductor of the power line optional
frequency <operating frequency> The frequency given in Hertz at which the power line is operating optional
name <name> The name of this power line section. optional
ref <reference> The reference of this power line section optional

Since power lines cables aren't insulated, they can only be located overhead to protect them from grounding with external elements.


"wires" means the type of cable which hang on isolators. Possible values : single, double, triple, quad .. (table from User:Nahainec/PowerLine)

count picture tag count picture tag
1 JP Power Wires Single.JPG wires=single 5 JP Power Wires Fivefold.JPG wires=fivefold
2 JP Power Wires Double.JPG wires=double 6 JP Power Wires Hex.JPG wires=sixfold
3 JP Power Wires Triple.JPG wires=triple 8 JP Power Wires Octal.JPG wires=eightfold
4 JP Power Wires Quad.JPG wires=quad


Picture/Description Tags Mapnik
Electricity pylon and power lines


Power lines by voltage using the power lines map from ITO Map, now defunct

In addition to rendering on power lines on the standard mapnik view the following services are also available:

See also