The continuing increase in energy demand, greenhouse gas emissions and negative environmental impacts associated with the use of fossil fuels has motivated researchers to find solutions to these problems. The smart grid with its components, including the rapid and significant development of dispersed generation and the Demand Side Management (DSM) concept are considered a solution to this situation. This paper aims to study the feasibility of increasing the penetration of renewable energy through the adoption of customer-side load management activities. As part of this research, the evaluation and performance analysis of a rooftop grid-connected solar photovoltaic system was carried out using pvPlanner software. A school in the province of M'sila, Algeria was selected as a case study. A comparative performance study between four different types of PV module technologies (a-Si, CdTe, CIS and c-Si) in terms of performance parameters according to IEC standards was conducted to determine the most appropriate solar cell technologies in this region. The effect of DSM activities on the amount of energy produced, injected into and retired from the power grid was examined. The results show that the annual average energy efficiency and performance ratio were 18.0 MWh-83.8%, 17.5 MWh-81.1%, 16.9 MWh-78.6% and 16.6 MWh-77.1%, respectively for a-Si, CdTe, CIS and c-Si technologies. Thus, amorphous silicon PV technology (a-Si) performs better than other technologies in this region. DSM leads to a decrease in energy consumption and is seen as a way to effectively promote and integrate solar energy.