Ingénieux système, qui est visible facilement (arrivée de la cabine & remplissage du ballast, et retour du contrepoids). Alors bon oui, ça sent un peu les eaux usées.

Spring in the Chamonix valley.

Castor myope près de Viviers (Ardèche)

ROSI SAS, french company founded in 2017, 1st industrial line worldwide able to recover high purity materials (Si, Ag, Cu) in end-of-life solar panels.
Plant built in Grenoble in 2023.
Annual objective: 90t Si, 30t Cu, 2,5t Ag
www.rosi-solar.com
Research dir. Yohan Parsa

The Pyhäjärvi disused mine in Finland is being turned into a gravity battery to store renewable energy, with an hydraulic head of up to 1400m and an envisaged capacity of 75 – 400 MW with an underground lower storage reservoir
callio.info/energy-stora...