The minute reserve available within 30 minutes is provided by those generating units connected to the Czech power system which are capable of providing the contracted regulation reserve RZMZt± within 30 minutes of a command from the ČEPS Control Centre. The minute reserve refers to a required change in generating unit power output, positive or negative, as measured at unit terminals.
The positive minute reserve RZMZt+ can be provided e.g. in the form of an increase in unit power output, discontinuation of pumping (at pump storage hydro power plants), non-utilisation of pre-planned pumping or disconnection of the relevant load from the Czech power system.
The minimum value of RZMZt for t=30 minutes provided by one unit is 10MW. The maximum unit power output is 70MW (unless otherwise contracted with the TSO). The duration of the provision of this service is not limited.
Conditions for this ancillary service provision are specified in the Agreement with AnS Providers.