Energy-saving generation dispatching not only can change the objective function of generation scheduling in the current planned power dispatching model， but also possibly alter the current equivalent reserve principle. The likely-to-be adopted applied principles of spinning reserve under energy-saving generation dispatching model， i.e. equivalent reserve principle and minimum consumption principle， are discussed to establish a corresponding optimal decision model for spinning reserve. The realization of the optimization of spinning reserve scheduling is studied. Two approaches are adopted—the independent modeling of multi-step optimization and unified modeling of joint optimization for daily spinning reserve and generation scheduling. Different energy-saving generation dispatching models are established. The proposed energy saving generation scheduling models are tested on a same case using the proposed dynamic programming method to validate the models and their realizations.