This paper presents an approach for computing the long duration availability of semitransparent photovoltaic system by steady-state analysis. This method employs the Markov process with constant transition rates and different degradation states for similar components and fixed configuration. In this research, average output power from modules is presented, which is considered in the same state with respect to the constant transient transition rate and variable repair rate. The output energy for 20 years with transition and absorbing time of single semitransparent photovoltaic module has been estimated for steady-state condition. This method includes all possibilities of failures associated with the operation of the semitransparent photovoltaic system.