This category depends on selecting the Unit Power Table method, although in the future it might be enabled for other power methods. The frequency regulation methods model the provision of the frequency regulation ancillary service; that is, how the reservoir can be made available to flexibly follow a load demand within a specified range during a certain period in order to affect the frequency of the generated power.

This is the default, do-nothing method; no regulation is modeled.

When frequency regulation is scheduled, it allows the unit to follow the real time load. Exactly what will happen in real time is unknowable. This results in two sets of values at scheduling time, nominally scheduled power and turbine release. It is uncertain if the real time operators will actually use the service. At present, we distinguish between the nominal scheduled power (and turbine release) that the regulation is allowed to depart from and the expected power generation (and turbine release) that will take place when regulation is allowed. Both are important. The scheduled power sets the baseline for regulation and should be communicated to the power dispatchers. The expected power and release are more useful for coordinating a plant with the rest of the system.

Many of these slots have column or row dimensions based on the number of units. The rows/columns of these slots are expanded at the beginning of the run to match the value in the Number of Units slot. When first configuring this method, the user must enter the Number of Units, then run the model (stepping through one timestep is enough) to grow the slots to the right dimensions.