Barrage and tidal power Rance, Tidal power station in La Richardais, France
The Barrage and tidal power Rance is a large dam across the estuary between La Richardais and Saint-Malo that harnesses the tide's power to generate electricity. The structure stretches over 750 meters, contains 24 turbines that can operate in both directions, and serves simultaneously as a road link for vehicles and as a lock gate for boats.
Construction of the tidal power station began in the early 1960s and officially started operating in 1966. The facility was for many years the largest tidal power station in the world and represented a turning point in France's renewable energy technology development.
The dam connects Dinard and Saint-Malo while serving as a key crossing point that shapes daily life in the region. It demonstrates how people have integrated the ocean's natural rhythms into their everyday activities, and visitors observe locals and travelers using the space as a meeting place.
Visitors should check in advance if guided tours are available, as some areas are accessible while others are restricted for safety reasons. The facility is easily reached by bike or car with nearby parking, and an information center called Odyssélec offers free exhibits with straightforward explanations of how the station operates.
The structure harnesses the same force that older mills along the coast relied on, such as the Mill of Prat, which visitors can still see today. About 15,000 boats pass through the lock each year and navigate the Rance estuary, making it a busy meeting point for ships and local fishermen.
The community of curious travelers
AroundUs brings together thousands of curated places, local tips, and hidden gems, enriched daily by 60,000 contributors worldwide.
