Energy Efficiency is central to achieving the interrelated economic, social and environmental goals of sustainable development. Improving Energy Efficiency is about using technology that requires less energy to perform the same function plus the share of renewables in final energy consumption. and it goes beyond energy conservation behavior which results in the use of less energy
This paper focuses on the deployments of improving Energy efficiency as important infrastructure for smart environment. Home energy management systems employ automated technologies to manage and reduce residential energy use and cost, as well as make energy reductions through energy efficiency measures more visible to the customer, and extend energy management systems to Internet of things applications. We first review energy management systems and Internet of things technologies. Then, we investigate the role of Cost Benefit Analysis in supporting decision-making processes in the context of projects related to home automation application.