 Electricity demand has been growing rapidly in recent years due to industrialization and the transition to a smart grid system. To meet this increased demand, more microgrids, renewable energy sources, plug-in electric vehicles, and energy storage systems need to be installed. These changes require the existing electrical power systems to be adapted and reconfigured to accommodate the higher loads. Demand side management, DSM, programs can help address these challenges and improve the reliability and financial performance of electrical power systems. This paper reviews various initiatives, techniques, impacts, and recent developments of DSM in electrical power systems. It also provides an extensive literature survey on the impacts of DSM on the reliability of electrical power systems. Finally, it identifies research gaps and provides directions for future work. This article was authored by Hussain Jammet, Jabir, Jashantay, Dahaman Ishak, and others. We are article.tv, links in the description below.