The Grand’Maison-Hydrélec site is located in the heart of the Oisans region in Isère. It includes the Grand’Maison hydroelectric scheme, the most powerful in France, and the EDF Hydrélec museum.

The Grand’Maison-Hydrélec site is an initiatory journey where the power and magic of hydroelectricity emerge. Through these three unique facilities, visitors can discover hydroelectricity, from its birth at the end of the 19th century, to a visit to the most powerful hydroelectric facility in France: the Grand’ Maison power station.