Linth–Limmern Power Stations

The power plants Linth Limmern AG is a power plant company in Linthal in the Glarus hinterland. One of the most important industries of Linthal is in addition to tourism, the electricity production from hydropower. The power plants Linth Limmern AG ( KLL ) to established and registered on 25 June 1957 at Glarus commercial register has its registered office and plant facilities in Linthal. Involved in the KLL are 85% Axpo AG and 15 % of the canton of Glarus.

Construction work from 1957

In connection with the project geologists examined the Limmernboden the source of the Linth. There was flowing water from through cracks in the rock, so that the terrain first did not seem suitable for the construction of a reservoir. This circumstance was met with cement injections. With the award of a license in 1957 once the arch dam Limmeren was begun with the construction, which was completed in 1963 and 92 million m³ comprehensive Limmerensee dams. The Limmernboden is a traffic- moderately difficult to access area - in contrast to the valley below to Tierfehd, which was connected to a road. From there, the cable car is installed, with the necessary materials, including cement and iron, could be brought forth. She had a load capacity of 18 tons. One of these three transport cable cars still exists and leads plant visitor to the dam. Above the lake Limmer of 9 million m³ comprehensive Muttsee was built by the mound of earth dam. The water in 1968 completely finished equipment is used in underground power station Muttsee ( between Muttsee and Limmerensee ), the underground power station Tierfehd (between Limmerensee and balance reservoir Tierfehd ) and the power plant Linthal (between Tierfehd and balance reservoir Linthal ).

Project « Linthal 2015"

« Linthal 2015" is one that is under construction, underground -scale pumped storage plant. Water is pumped back out of the Limmernsee in the well 600 m higher Muttsee and again used as needed for electricity production. The new plant will have a pump power and a turbine output of 1000 MW each. Thus, the performance of the power plants Linth Limmern today around 480 MW will increase to 1480 MW. For the realization is expected construction period of approximately seven years. It is planned to start operating with the first of the four groups of machines 2015. During the construction period up to 500 people at the various construction sites will be working. The investment cost for this major project amount to approximately two billion francs. The project -related premature relicensing of the plants. In September 2009, the relevant environmental authorities have " 2015 Linthal " decided the realization of.

Expansion projects

  • For the Muttsee a new heavyweight dam is planned. Set 1 km long dam allows the storage volume of Muttsee today 9 million to 25 million m3 to increase size. The natural altitude of 2'446 m above sea level today. M. is a dam height of 2'474 m above sea level. M. increased.
  • Pumpspeicherwerk Limmern ( underground central ): At the foot of present-day dam of Limmer lake, at about 1,700 m above sea level. M., is around 600 m rise to a new underground central for the four groups of machines inside the mountain. Two parallel pressure lines will connect the Muttsee with the headquarters and two 500 m long tailrace tunnels, the Center for the Limmernsee. The access to the cavern is ensured by Tierfehd from a new, about 4 km long access tunnel, which is equipped with a funicular.
  • Compensating basin Tierfehd: Today's compensation pool is complemented north of the office building by another pelvis. The storage capacity can be expanded by 350,000 to approximately 560,000 m3 of water.
  • Power supply: The power increase, which is connected to the project " Linthal 2015", due to the connection of the equipment to the Swiss high-voltage grid. Today, there is a 220 - kV transmission line from Tierfehd in the Grynau at Uznach. For " Linthal 2015", a new 380 - kV transmission line from Tierfehd up to the room Schwanden / Sool is provided in parallel to the current line. Here it is connected to the existing 380 kV line from the preliminary.

Energy distribution

Axpo AG transports the KLL- power currently with a 220 - kV line in their distribution station Grynau at Uznach. The significantly increased electricity production from 2015 due to the connection to the Swiss high- voltage grid. It would have a new, parallel to the 220 ​​kV line running, 380 - kV line up to the room Schwanden - Sool. There you will be attached to the high voltage line preliminary.

Swell

  • Power plants Linth Limmern at axpo.ch ( accessed 12 September 2013).
  • Project homepage Linthal 2015 at axpo.ch ( accessed on 13 January 2013).
Types of business entity Linthal, Glarus Dam#Gravity dams Equalizing basin
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