Zeyskaya GES
TIN 2805002685, PSRN 1022800926829

The Zeya Hydroelectric Power Station is the first large-scale station in Pacific Russia built in the area of a severe continental climate with the annual temperature range difference up to 80 degrees C. The Zeya Hydroelectric Power Station is unique. There were installed for the first time in the world powerful adjustable-blade diagonal-flow turbines. They were designed in such a way that the blades are not horizontal but installed at 45 degrees to the axis. It allows to start the turbines even at low levels of water at the water storage basin.The dam itself is unique in design: it was formed not of monolithic concrete but of hollow concrete buttresses. There were used much less construction materials as compared with a monolithic concrete design. For the first time in the world there was used at the Zeya Hydroelectric Power Station's dam a cavitation-durable concrete with coarse-gravel filling.A volume of concrete required for the start-up of the Zeya Hydroelectric Power Station came to a half of the designed and the amount of investment - to less than 60% of the Project construction total costs. These figures are very low for the Russian hydropower construction engineering.The Zeya Hydroelectric Power Station is a complex hydropower system. Its importance is manifested not only in kWhr figures; it regulates the level of the Zeya River which prevents flooding of the lower Zeya and Amur rivers.Old inhabitants of Zeya and Blagoveshchensk cities as well as riverside villages remember those losses and damages caused by flooding. During downpour seasons at the north the Zeya River having burst into freedom used to flood hundreds of hectares of fertile lands, meadows, crops and threatened even large cities. The Zeya Hydroelectric Power Station's dam has tamed the rowdy nature of the Zeya River for good.