The main problem is precisely the vocabulary used. OSM tagging should respect current language, especillay when OSM terms refers to totally different real life elements (plant taken for substation)
There's no distinguishing to make between big and small power substations since they have the same functional role in power grids. power=substation seems to be the rightest value to use but power=sub_station would do the trick too. -- *François Lacombe* francois dot lacombe At telecom-bretagne dot eu http://www.infos-reseaux.com
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