A new hydropower unit was commissioned at the Company's Sayano-Shushenskaya hydropower plant (HPP), adding another 640 MW to 5 hydro-units in operation with a total capacity of 3,200 MW. A full cycle of commissioning tests, under the direct supervision of Power Machines (the turbines manufacturer), was carried out prior to commissioning.
Hydropower unit No. 7 is the second brand new unit commissioned at the HPP. Hydropower unit No. 1 was launched earlier, in December 2011. Another 8 new hydro-power units are scheduled to be installed as part the 2nd phase of the Sayano-Shushenskaya HPP rehabilitation project (the 4 old hydro-units restored and put into operation in 2010 will also be replaced by new ones). The rehabilitation schedule for the Sayano-Shushenskaya HPP calls for commissioning 3 hydro-units per year until 2014. Eventually, the plant will be fully equipped with brand new up-to-date equipment with enhanced performance characteristics that meet all safety and reliability requirements.
The useful life of the new units has been extended to 40 years and maximum efficiency now reaches 96.6%.
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