Linth–Limmern Power Stations
The Linth–Limmern Power Stations are a system of hydroelectric power stations located south of Linthal in the canton of Glarus, Switzerland. The system uses five reservoirs and four power stations at steep variations in altitude.
| Linth–Limmern Power Stations | |
|---|---|
Upstream face of the Limmern Dam | |
| Country | Switzerland |
| Location | Linthal, Glarus Süd |
| Coordinates | 46°51′00″N 9°0′03″E |
| Status | Operational |
| Construction began | 1957 |
| Opening date | Tierfehd, Linthal: 1964 Mutt: 1965 Tierfehd PS: 2009 Limmern PS: 2017 |
| Owner(s) | Linth-Limmern AG |
| Upper reservoir | |
| Creates | Mutt/Limmern |
| Lower reservoir | |
| Creates | Limmern/Tierfehd |
| Power Station | |
| Hydraulic head | Limmern PS: 623 m (2,044 ft) Tierfehd: 1,045 m (3,428 ft) Linthal: 130 m (427 ft) |
| Turbines | Mutt: 4.4 MW Pelton turbine Limmern: 4 x 250 MW variable-speed Francis pump-turbines Tierfehd: 3 x 87 MW Pelton turbines; 2 x 20 MW Pelton turbines; 1 x 140 MW Francis pump-turbine Linthal: 2 x 17.2 MW Pelton turbines |
| Installed capacity | Mutt: 4.4 MW Limmern: 1,000 MW Tierfehd: 441 MW Linthal: 34.4 MW |
| Annual generation | Mutt: 7 million kWh Tierfehd: 345 million kWh Linthal: 76 million kWh Total: 428 million kWh |
Works on the complex began in 1957 with the construction of Lake Limmern Dam and the Mutt, Tierfehd and Linthal Power Stations. The dam was complete in 1963 and the power stations were all operational by 1968, with an installed capacity of 340 MW. In 2009, a 140 MW pumped-storage component between Lake Limmern and Tierfehd Reservoir was commissioned. In 2010, construction began on the Linthal 2015 Project, which included the expansion of Lake Mutt and Tierfehd Reservoir, and the addition of the Limmern Power Station, a 1,000 MW pumped-storage component between Lake Mutt and Lake Limmern. Commissioning of the last unit in Limmern was completed by December 2017, bringing the total installed capacity of the system to 1480 MW.