Renewable energy technologies (RET) present an emission free means of energy harvesting in the current energy scenario demanding sustainable needs. However, the production process of RETs especially solar photovoltaic (SPV) is material and energy expensive process. In this paper such material and energy intensive production processes of SPV systems are analyzed. The systems are analyzed up to the production stage with focus given to energy and material differentiation among different stages of production. The evaluation of emissions during production stage is carried out for a 1KWp SPV system. A comparison is made between different types of technologies i.e., mono, poly, thin film CdTe and ribbon Si. Also, comparison of sustainability aspects of rooftop and ground mounted installations is carried out. Results indicate that, in case of mono Si technology emissions during wafer production phase are pronounced compared to cell and module preparation stages. In poly and thin film technologies, emission share of wafer stage is comparable with module preparation stages. In ribbon Si, energy inputs accounted for higher emissions rather than materials as in case of other technologies. In the mounting structures, in roof structures resulted in least emissions through material savings while, ground mounting structures are environmentally expensive due to high material consumption. Also, the emission share of materials used in production stage is reduced linearly from mono Si to ribbon Si when in roof mounting is used. Therefore, thin film CdTe, ribbon Si presents an environmentally cheaper options of harnessing solar energy and production processes of technologies like mono Si, poly Si need to be improved to make them environmentally sustainable.