OREANDA-NEWS. JSC RusHydro (ticker symbol: MOEX, LSE: HYDR; OTCQX: RSHYY) started construction of a new spillway of the Yegorkykskaya hydroelectric power plant as part of the rehabilitation and modernization of the cascade of hydropower plants on the river Kuban'.

The new spillway will be used for water discharges and will replace the existing 50 year-old spillway of lower capacity. The construction works will be completed by the end of 2014. The cost of construction is estimated at RUB 212.4 mn.

The capacity of new spillway will be 120 m3/s, allowing full water passage even in case of full outage of the turbines. Combined pass-through capacity of the hydropower plant (the spillway plus the turbines) will total 250 m3/s, which is sufficient to withstand even extreme floods.

The spillway will be built of monolithic concrete, and will be 517 meters long and 17.6 meters wide.

The Yegorlykskaya station, built in 1956-1962, comprises 1320 meter long landfill dam, intake canal, tower spillway, discharge canal of the spillway and turbine building housing 2 hydropower units with combined capacity of 30 MW.