Today, 44% of global energy has been derived from fossil fuel, which currently poses a threat to inhabitants and well-being of the environment. In a recent investigation of the global demand for energy consumption across various ener. Today, 44% of global energy has been derived from fossil fuel, which currently poses a threat to inhabitants and well-being of the environment. In a recent investigation of the global demand for energy consumption across various energy consumption sectors, the building sector has been shown to be one of the primary energy consumers, with a high percentage of energy consumption deemed as unnecessary. This as a result of poor management practice and implementation of strategies to avoid excess energy consumption. Over the years, researchers in both academia and industries have focused on various techniques to deal with unnecessary energy consumption and ensuring a healthy living environment for green smart cities. Among these techniques is Smart Home Energy Mana. ••In this work, we study Smart Home Energy Management Systems.••Researchers have focused on how to deal with unnecessary energy consumption.••This study explores the top 10 SHEMs available in the market today.••The result reveals a lack of quality attributes such as security and privacy.••Smart home energy managementSmart thermostatSmart homeThermal comfort controlSmart energy controlSmart home energy management system opportunityThe global energy crisis has for decades been one of the significant challenges that pose a threat to the global economy and a healthy living environment. A recent report published in 2020 by Energy Outlook (Outlook, 2019) shows the increase of 2.9% global energy consumption in 2018, which is considered as the fastest increased rates for decades compared to its usual primary yearly average increase of 1.5% (see Fig. 1) and forecasted to increase rapidly in upcoming years. The same report shows the United States of America was the world's largest energy consumer until 2002, when it was overtaken by the Asian region.The trend shows significant turning point closely related to the ongoing increase in population, and number of industries and infrastructures in the Asian region. Anoth. Modern technological advancement has positively impacted our lifestyle and, at the same time, led to the progress of environmental concern that poses a threat to the inhabitants. Over the decades, the increase in environmental degradation has become a reality driven by many factors (Haseeb et al., 2020, Chandrasekhar et al., 2020). Increase in world population and industrial activities have led to increase the percentage of unhealthy particles in the outdoor air creating an unhealthy living environment. Electricity is a form of clean energy and safe when it is utilized. However, the transition and generation of electricity has great environmental and health consequences. The generation of electricity from all sources of primary energy has effects on the environment to some extent. Over the decades (Atzeni e.
