As a sequel to the first article describing the implementation legislation and promotional measures of important energy labeling programs worldwide, this article focused on the implementation aspects of selected energy labeling programs. Operating procedures and rules for mandatory Canadian EnerGuide program, voluntary US Energy Star program and China’s Energy Conservation labeling program were described to illustrate the implementation aspects of energy labeling programs. Also presented are the regional differences on program design and implementation rules, as well as discussion and recommendation on the need to better balance the program control and credibility