From 26th to 30th April 2021, guarantee measurement of the control system was performed on all (TG1 to TG4) units at HPP Kamýk.

The guaranteed parameters of the control system after the modernization of the I&C were verified (accuracy of measurement P, Q, U, I at the generator outlet, accuracy of frequency measurement during machine operation, start-up time at 95% of speed, phasing time and power stabilization). Furthermore, verification measurements were performed according to the methodology of the Grid Code for the certification of ancillary services "minute reserve available within 5 minutes" and "black start".