In this paper, an energy dispatch model that satisfies the load demand, taking into account the intermittent nature of the solar and
wind energy sources and variations in demand, is presented for a solar photovoltaic–wind–diesel–battery hybrid power supply system.
Model predictive control techniques are applied in the management and control of such a power supply system. The emphasis in this
work is on the co-ordinated management of energy flow from the battery, wind, photovoltaic and diesel generators when the system
is subject to disturbances. The results show that the advantages of the approach become apparent in its capability to attenuate and
its robustness against uncertainties and external disturbances. When compared with the open loop model, the closed-loop model is shown
to be more superior owing to its ability to predict future system behavior and compute appropriate corrective control actions required to
meet variations in demand and radiation. Diesel consumption is generally shown to be more in winter than in summer. This work thus
presents a more practical solution to the energy dispatch problem.