As a result, after completion of all repair and commissioning works at RusHydro’s Sayano-Shushenskaya HPP, the unit № 4 will be included into the grid for complex testing of the primary and ancillary equipment work with the maximum loading within 72 hours. According to the complex tests the unit will be ready for launching under load. The commissioning of restored unit №4 must take place in August this year in line with the Sayano-Shushenskaya HPP restoration plan.