Al-Arfaj, Khalid A.Dahal, Keshav P.Azaiez, M.N.2009-02-242009-02-242007Al-Arfaj, K., Dahal, K. P. and Azaiez, M. N. (2007) Maintenance cost models in deregulated power systems under opportunity costs. In: Proceedings of the 7th IASTED International Conference on Power and Energy Systems (EuroPES), Palma De Mallorca, Spain.34149http://hdl.handle.net/10454/2425Maintenance costs in deregulated power systems play an important role. This mainly includes direct costs associated with material and labor costs; and indirect costs associated with spare parts inventory, shipment, test equipment cost, indirect labor, and opportunity costs. The cost function is used as the sole or main component of the objective function in maintenance scheduling and planning activities. The cost has been modeled in literature with several representations for centralized power systems. With deregulation of power industries in many countries the costs representation to be used within the maintenance model in the decentralized power systems has become an important research question. This paper presents modeling of different components of maintenance costs that can be used within the main objective function of the maintenance scheduling and planning problem for the deregulated environment.en© 2007 IASTED and ACTA Press. Reproduced in accordance with the publisher's self-archiving policy.MaintenanceOpportunity costDeregulated power systemConference paper