The energy consumption of one data center is equivalent to the amount that 100 commercial buildings consumed. Since promoting energy efficiency is the most cost-effective policy measure, U.S., E.U. and Singapore have taken policies and schemes, known as ”Green Data Center”, as well as the underlying laws and regulations regarding energy efficiency, in order to improve the energy efficiency of public and private data centers. Accordingly, this article argues that our government may consider taking mandatory measures to impose more energy-efficiency obligations on the public sector, creating more incentives to encourage the private sector to improve its energy efficiency, and starting to discuss and research whether Green-Data-Center-related standards, marks or other measures should be taken to guide the industry.