ITU‐T's Technical Reports and Specifications 913 Annex S Siemens: Green city index Source: Siemens. http://www.siemens.com/entry/cc/en/greencityindex.htm The green city index was developed by Siemens. Green city index reports are developed for Europe, Asia, South America, North America, and Africa. The green city index focuses on environmental performance and the categories and indicators vary between the different geographical indices. Eight categories are used in the European version index: CO2 emissions, energy, buildings, transport, water, waste and land use, air quality and environmental governance; 16/30 indicators are derived from quantitative data (how the city is performing) and 14/30 of the indicators are qualitative assessments of the cities ambition and aspirations. Reference: European Green City index – assessing the environmental performance of Europe's major cities – A research project conducted by the Economist Intelligence Unit, sponsored by Siemens. Siemens report. Table S.1 – European green city index European green city index Category indicator Type Description CO2 CO2 emissions Quantitative Total CO2 emissions in tons per head. CO2 intensity Quantitative Total CO2 emissions in grams per unit of real GDP (2000 base year). CO2 reduction strategy Qualitative An assessment of the ambitiousness of CO2 emissions reduction strategy. Energy Energy consumption Quantitative Total final energy consumption, in gigajoules per head. Energy intensity Quantitative Total final energy consumption, in mega joules per unit of real GDP (in euros, 2000 base year). Renewable energy consumption Quantitative The percentage of total energy derived from renewable sources, as a share of the city's total energy consumption, in tera joules. Clean and efficient energy policies Qualitative An assessment of the extensiveness of policies promoting the use of clean and efficient energy. Buildings Energy consumption of residential buildings Quantitative Total final energy consumption in the residential sector, per square meter of residential floor space. Energy‐efficient buildings standards Qualitative An assessment of the extensiveness of cities' energy efficiency standards for buildings. Energy‐efficient buildings initiatives Qualitative An assessment of the extensiveness of efforts to promote energy efficiency of buildings. Transport Use of non‐car transport Quantitative The total percentage of the working population travelling to work on public transport, by bicycle and by foot.