This course is for senior undergraduate students in Engineering, Physics, and Chemistry, who are interested in sustainable renewable energy and environmental technologies. Development of such cutting-edge technologies heavily relies on understanding of electrochemical principles associated with charge/mass transfer during the reactions. This course will start with fundamental thermodynamics and kinetics of electrochemical reactions, followed by systematical descriptions of energy conversion and storage associated electrocatalysis, photocatalysis, and battery principles. The targeted technologies, such as solar cells, fuel cells, batteries, and supercapacitors will be introduced. Also, a special emphasis in this course is on environmental electrochemistry and will cover the latest electrochemical technologies in waste treatments, clean synthesis, and electrochemical sensors.