Dalešice hydropower plant
| Dalešice hydropower plant | ||
|---|---|---|
 |
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| location | ||
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| Coordinates | 49 ° 7 '30 " N , 16 ° 7' 17" E | |
| country |
 Czech Republic
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| place | Třebíč | |
| Waters | Jihlava | |
| Height upstream | 381.5 m | |
| power plant | ||
| owner | ČEZ . as | |
| operator | ČEZ, as | |
| construction time | 1970-1988 | |
| Start of operation | 1978 | |
| technology | ||
| Bottleneck performance | 4 × 120 megawatts | |
| Average height of fall |
100 m | |
| Standard work capacity | 371 million kWh / year | |
| Turbines | 4th | |
| Generators | 4th | |
| Others | ||
| Website | [3] | |
The Dalešice hydropower plant is a pumped storage power plant on the Jihlava River southeast of Třebíč . It was built together with the lower reservoir of the Mohelno power plant between 1970 and 1978. The backwater of 22 km extends to the village of Vladislav . With a capacity of 127.3 million m³ and a maximum depth of 85.5 meters, the reservoir is one of the largest in Moravia and the deepest in the Czech Republic .
dam
The dam is located on kilometer 66 of the Jihlava. It is 384 m long, 8 m wide and 100 m high, making it the highest in the Czech Republic. The dam consists of a bed of stones with a core of clay . In October 2016 the dam was completely renovated.
Building history
In the Jihlava reservoir, several old mills were flooded, including the Cermak mill near Číměř , first documented in 1366 , a little downstream the Jirkasův mill with a saw, near Třebenice the mills Pyrochtův and Cermak and the manor mill near Koněšín, known from 1568 . Parts of two mills were saved in the museum of the Slup watermill .
Construction began in 1970 and took eight years. The foundations and curved base were made of concrete on the assumption that the dam would also be concreted. Only when more detailed geological investigations showed that the local material was suitable, the dam was made of stone with a core of clay. The clay used was weighed several times to determine the moisture content; too wet clay would have led to an unstable dam.
During the construction phase in 1974, director Jiří Menzel shot the film Who Looks for Gold? (Original: Kdo hledá zlaté dno ).
use
The Dalešice hydropower plant was planned in combination with the Dukovany nuclear power plant , for which it provides essential process water .
As a pure run-of-river power plant , the small amount of water from the Jihlava River would only be sufficient to generate a relatively small amount of energy. The power plant only gains its great value as a pumped storage power plant for generating peak loads , with unneeded (and cheap) energy from the nearby Dukovany nuclear power plant being pumped back up from the lower-lying reservoir of the Mohelno power plant, while short-term energy peaks from the 4 × 150 -MW generators of the Dalešice power plant are produced.
The storage capacity also has an impact on the lower reaches of the Jihlava, seasonal fluctuations in the water flow are balanced out, flood peaks during heavy rainfall and sedimentation are reduced.
The banks of the reservoir also gained importance for recreational use, and many private holiday homes and several campsites were created. Passenger shipping is operated seasonally. In the reservoir there is a rich fish population (fishing ground Jihlava 7 and 8) with crabs and trout.
