Hydroelectric power station, Zemm – Austria

Abstract

In order to accommodate an increasing rate, doubled every ten years, of current consumption in this country, two hydroelectric power plants were constructed in the Zemm River. This type of power plant has the advantage of being able to produce energy at the time of consumption so as to be to handle peak energy production; while the normal power load requirement is covered by nuclear, petroleum and gas, and river power plants. These two plants have 517.500 kW, with a total annual yield of 648 GWh, or 778 GWh with pumping equipment. The gravity dam of the upper reservoir is 131 m high and 725 m long at the top. 960,000 m³ of concrete were used in its construction and it has an annual storage capacity of 127.4 millions m³. The earthen dam of the lower reservoir, which required 820,000 m³ to build, is about 28 m high and 480 m wide at the crown, with a capacity of 6,4 millions m³.