ITU‐T's Technical Reports and Specifications 833 Table 1 – Comparison of KPIs between index systems and sets of KPIs Dimension Sub‐ dimension Indicators ISO IDI UN‐Habitat CIC MOHURD ECI Italy TTC GCIF GPC ESCI ERMC EUSI Wheel Ericsson IBM IDC PwC Siemens I 2.1.7 Proportion of noise monitoring by means of ICT measures X X X I2.1.8 Solid waste disposal management with ICT measures X X X X X X X X X X X D2.2 Energy and natural resources I2.2.1 Improvement of civilian electricity usage (per capita) with ICT measures X X X X X X I2.2.2 Improvement of industrial electricity usage (per GDP) with ICT measures X X X X X X X I2.2.3 Improvement of civilian water usage (per capita) with ICT measures X X X X X X I2.2.4 Improvement of industrial water usage (per GDP) with ICT measures X X X X