🔋 Nant de Drance Water Battery
Europe's largest pumped-storage hydropower plant, operational since 2022
📋 Fast Facts
- Capacity: 900 MW, making it one of Europe's most powerful pumped-storage facilities
- Location: 600 meters underground in Valais, Swiss Alps, between Emosson and Vieux Emosson reservoirs
- Operational Status: Completed in 2022; not open to public
- Round-trip Efficiency: 70–80%, typical for pumped-storage hydropower systems
The Nant de Drance Hydropower Plant is a pumped-storage facility in the Swiss Alps that serves as a ...