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Public-images-osm logo.svg power = compensator
A static power device used to ensure power quality and electrical network resilience. Show/edit corresponding data item.
Group: power
Used on these elements
may 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

The tag power=compensator is used to map a power compensator: a static power device used to ensure power quality and electrical network resilience.

Various components are used for controlling reactive power and voltage quality in a power grid. Here are some suggested tags for different types of compensators.

How to map

Basically, a compensator whatever its type is mapped as a node with power=compensator on. You can add extra details about its actual location with location=* and its operator=*.

Such device may be seen mostly in power substations but along power lines too. We can see them in factories or large industrial sites, but often in a local substation dedicated to industrial power feeding (substation=industrial)

Advanced mapping

There may be more complex systems, composed of several different component described below. Such cases can be described with as many node as components involved in the system, depending of what you see in a survey or aerial imagery. All components may be linked with power=line + line=bay ways.


Key Value Comment Recommendation
power=* compensator Defines this node node or area area as a compensation component. Mandatory
compensator=* <compensator type> See own key's page for values. This tag should be specified when the compensator type is known. Recommended
voltage=* <voltage> The voltage at which the compensator is operated. Recommended
rating=* <power> MVAr/kVAr The power rating of the compensator. The unit should be MVAr (megavolt-ampere-reactive) or kVAr (kilovolt-ampere-reactive). Recommended
frequency=* Frequency in hertz (Hz) Frequency at which the compensator operates. Recommended
cables=* Cables amount How many cables phases (AC) / poles (DC) are connected to the compensator from the power grid. Optional


To be completed