After a large-scale renewal, hydropower unit No. 5 has been put into operation at the Cheboksarskaya HPP. As part of the Comprehensive Modernization Program (CMP), RusHydro has restored the rotary-blade mode on the turbine and replaced the stator of the hydropower generator.
After the overhaul of the turbine impeller, carried out by Power Machines, its blade can change the angle depending on the flow rate and water pressure, which increases the efficiency of the hydropower unit. At present, 11 out of the 18 turbines of the Cheboksarskaya HPP have already been transferred to the optimal rotary-blade mode. Each of them has an environmentally friendly design featuring oil-free impeller sleeves. This excludes ingress of oil into water.
Hydropower unit No. 5 is the fourth unit already which has undergone not only the turbine impeller renewal, but also the installation of a new generator stator manufactured by Power Machines. Three more stators were replaced in hydropower units No. 2, No. 10, and No. 13 in 2014–2016.