Demand Side Management (DSM) is a very important tool that converts a consumer's passive role to an active one by changing energy consumption and helps the energy utilities to decrease the peak demand and reshape the load curve. This paper presents a detailed analysis of the impacts of three of the most important DSM techniques which are energy efficiency, direct load control, and shifting load through two cases which are one day in summer and one in winter. The effectiveness of the three techniques is demonstrated on average daily consumption of an Egyptian residential house in Shebin El-Kom, Menoufia Governorate. The desired objectives are reducing the energy consumption, electricity bill, and minimizing peak to average ratio (PAR). The obtained results confirm that applying DSM techniques has significant potential in terms of financial savings for the consumers and utility provider, and a cleaner environment without any impact on service quality or customer satisfaction.