Abstract: In this paper an attempt has been made to run a high capacity packaged type air-conditioner using solar energy. For this purpose the vapour compression cycle has been selected. In this the D.C powered compressor is used to save the losses of input energy. It is found that for cooling a given space 10TR capacity cooling unit is needed. As per market survey we found that package type vapour compression system can fulfil this requirement. To power this unit we need 12 photovoltaic modules of 345 Wp capacity connected in series. In this analysis the COP of system has been taken 2.52. Four quantities per panel of 24 volts battery are needed to give backup power for system.