This is a simplified review of LEED V.4 created by me to teach student of final year of undergrad. the new criteria for mixed-use of the new construction and interiors. This summarizes credits and topic areas for compliance, review case examples of LEED projects and how they demonstrated compliance. This study shows the typical types of Lighting, Electrical and HVAC systems and energy management software for sustainable design. A survey of what systems are being used today and why.