Systems and devices for controlling power generation are provided. One system may include an electrical generator controller. The controller may include a filter component, a frequency response schedule component, and a rate limiter component. The filter component may receive a power grid frequency signal and output the frequency signal when the frequency signal is outside a frequency band. The frequency response schedule component may determine an ultimate target power contribution using the filtered frequency signal, the ultimate target power contribution representing an ultimate amount of power contribution that the electrical generator should provide in a primary frequency response. The rate limiter component may determine an immediate target power contribution signal that varies over time and approaches the ultimate target power contribution. Thus, the controller may control the approach rate and/or arrival time, and so forth, of the primary frequency response to a power grid frequency disturbance.