1 Scope 2 References 3 Definitions 3.1 Terms defined elsewhere 3.2 Terms defined in this Recommendation 4 Abbreviations and acronyms 5 Conventions 6 Architecture of data centre or telecom centre energy consumption 7 Whole data centre and telecom centre energy efficiency measurement methodology 7.1 Test instrument requirements 7.2 Assessment period and frequency 7.3 Assessment conditions 7.4 Measurement methods 7.5 Energy efficiency measurement points and calculation methods 7.6 Partial data centre and telecom centre energy efficiency 8 Power feeding system energy efficiency measurement methodology 8.1 Test instrument requirements 8.2 Assessment period and frequency 8.3 Assessment conditions 8.4 Measurement methods 8.5 Energy efficiency measurement points and calculation methods 9 Cooling system energy efficiency measurement methodology 9.1 Test instrument requirements 9.2 Assessment period and frequency 9.3 Assessment conditions 9.4 Measurement methods 9.5 Energy efficiency measurement points and calculation methods Bibliography