Ligne 225 KV - (Pied-de-Borne - Laveyrune)

## Présentation :

Cette ligne à très haute tension relie le poste de Laveyrune au barrage de Pied-de-Borne. Elle fait partie de la continuité à 225 Kilovolts Pratclaux - Bollène.

Chargement de la 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class=\"mw-parser-output\"\u003E\u003Cp\u003ELaveyrune\n\u003C/p\u003E\u003C/div\u003E","title":"Laveyrune\n","link":"","lat":44.62029773998121,"lon":3.899592101963223,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EPied-de-Borne\n\u003C/p\u003E\u003C/div\u003E","title":"Pied-de-Borne\n","link":"","lat":44.47895150311791,"lon":3.985531523417807,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ED\u00e9rivation de Montselgues\n\u003C/p\u003E\u003C/div\u003E","title":"D\u00e9rivation de Montselgues\n","link":"","lat":44.52553628522419,"lon":4.028517806767633,"icon":""}]}
## Historique :

Construite au milieu des années 1930, la ligne fut d'abord exploitée sous 150 kilovolts et reliait à l'origine l'usine hydroélectrique de Monistrol-d'Allier à Bagnols-sur-Cèze.

En 1952, avec le développement du réseau à très haute tension, la tension est portée à 225 KV et son tracé est modifié; elle relie dès lors Pratclaux à Bollène.

La mise en eau des barrages de Villefort et Raschas entraîne la création en 1965 d'une usine hydroélectrique à Pied de Borne. La ligne Pratclaux-Bollène est alors dérivée sur environ 16 km entre Montselgues et Seyras et 15 pylônes de type "chats" sont créés pour raccorder le poste de la centrale.

En 2016, le poste électrique de Laveyrune est mis en service pour raccorder au réseau le parc éolien de la Montagne Ardèchoise.

## Description du tracé :

* La ligne part du poste de Laveyrune et longe la D154 sur 600m en direction du Sud-Est
* Elle bifurque ensuite d'avantage vers l'Est et attaque la montagne Ardéchoise en traversant la forêt de Laveyrune.
* Elle franchit les gorges de la Borne au Sud de Saint-Laurent-les-Bains puis longe la D4 sur une dizaine de km (elle chemine à flanc de montagne jusqu'au col de la Croix-du-Chap-del-Bosc)
* Arrivée au lieu-dit *La Bombine,* la ligne quitte son tracé d'origine et bifurque vers le Sud-Ouest. C'est à partir d'ici qu'elle est portée par des pylônes "chat".
* Elle descend la corniche du Vivarais Cévenol en direction de Pied-de-Borne.
* Arrivée au Nord du village, elle franchit à nouveau les gorges de la Borne, passe au dessus de la D151 et tourne plein Sud pour arriver dans le poste de l'usine électrique.

## Ancienne ligne :

* Ligne 150 KV - (Bagnols-sur-Cèze - Monistrol-d'Allier)