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Buildings already account for 25% of China’s primary energy consumption, and this share will grow over the coming decades as China continues to urbanize and building energy use intensity increases. Green building presents an enormous opportunity to limit China's green house gas emissions, but to slow and eventually reduce building energy consumption requires the objective study and certification of what “green” really means. Two rating systems, China’s 3-Star system, and the United States Leadership in Energy and Environmental Design LEED system, are helping to ensure the promise of green building is more than just hype. By providing an objective and trusted seal of approval these rating system help create accountability -- transforming the building marketplace so that environmental performance metrics become part of the economic equation. The growth and popularity of these programs is an encouraging sign, but how effective are these rating systems in reducing energy consumption in practice? This presentation analyzes the factors behind the continuing increases in building energy consumption in China, compare LEED and the 3-Star system, and present preliminary findings into whether or not green building rating systems are truly living up to their promise.