This Recommendation presents the general principles on how to assess the environmental impact of ICT and outlines the different methodologies that are being developed : " Assessment of the environmental impact of ICT goods, networks, and services " Assessment of the environmental impact of ICT projects " Assessment of the environmental impact of ICT in organisations " Assessment of the environmental impact of ICT in cities " Assessment of the environmental impact of ICT in countries or group of countries This Recommendations also provides some examples of opportunities to reduce the environmental load thanks to ICT.