Tools
Carenage
Continuous integration tool meant to make environmental evaluation easier for software projects.
DC Footprint – Data center environmental footprint calculator
DCFootprint enables the estimation of the environmental footprint of a data centre and the services it provides, by combining standard models and methodologies to speed up the assessment process.
DCWatch – Open database to map data centers worldwide
DCWatch is a collaborative research project aimed at mapping the current state and expansion of data centers worldwide, as well as their past, present and future social and environmental impacts.
Open-source GPU embedded impacts calculator
First parametric calculator to assess the environmental impacts of manufacturing graphics cards (Nvidia A100, H100, GH200, etc.), in collaboration with Tide.
Scaphandre
Metrology agent dedicated to electric power and energy consumption metrics.
Studies
AI-powered HVAC in educational buildings
Net environmental assessments of an AI solution applied to HVAC systems in 100 sites in Stockholm.
Comparative environmental assessment of advertising campaigns
Environmental assessments of advertising campaigns using print materials and their digital counterparts, across their entire life cycles — with Adeline Gabay and Tide.
Consequential assessment of eco-design practices for digital services
Analysis of the relevance of eco-design leverage points within a consequential framework using the Empreinte Projet methodology.
Direct and indirect environmental quantification of digital impacts in use cases
A national study of the net environmental impacts of 9 digital technologies relative to France's transition targets - With DDemain, Mavana et Resilone.
Environmental impacts of refurbished digital equipment
Environmental assessments of refurbished digital devices compared to their brand-new equivalents, over their entirelife cycles - With DDemain
Prospective environmental assessment of data centers in France
A study of data centers’ energy, water, and land use, and projections of these consumption levels through 2060 - With CLIK consortium.
Research papers
- Roussilhe, G., Ligozat, A. L., & Quinton, S. (2023) A long road ahead – a review of the state of knowledge of the environmental effects of digitization
- Roussilhe, G. (2025) A Tale of Twin Transitions – How Did We Come to Think That Digitization and Sustainability Go Hand in Hand
- Simon, T., Ekchajzer, D., Berthelot, A., Fourboul, E., Rince, S., & Rouvoy, R. (2024) BoaviztAPI – a bottom-up model to assess the environmental impacts of cloud services
- Roussilhe, G., Dromard, B., & Mitra, S. (2026) Counting own goals – High-level assessment of the economic relationship between the ICT and the Oil and Gas sectors and its environmental implications
- Ekchajzer, D., Bornes, L., Combaz, J., Letondal, C., & Vingerhoeds, R. (Best Paper ICT4S 2024) (2024) Decision-making under environmental complexity – the need for moving from avoided impacts of ICT solutions to systems thinking approaches
- Roussilhe, G., Pirson, T., Xhonneux, M., & Bol, D. (2024) From silicon shield to carbon lock‐in? The environmental footprint of electronic components manufacturing in Taiwan (2015–2020)
- Falk, S., Ekchajzer, D., Pirson, T., Lees-Perasso, E., Wattiez, A., Biber-Freudenberger, L., … & van Wynsberghe, A. (2026) More than Carbon – Cradle-to-Grave environmental impacts of GenAI training on the Nvidia A100 GPU
- Paccou, R., Fourboul, E., Kluska, J., & Roussilhe, G. (Best Paper Runner-up ICT4S 2026) (2026) Net Environmental and Economic Impacts of AI-Powered Microgrids – When Context Matters More Than Technology
- Roussilhe, G., Pirson, T., Bol, D., & Mitra, S. (2025) Purer than pure – how purity reshapes the upstream materiality of the semiconductor industry.
- Béranger, A., & Roussilhe, G. (2025) Sur le front de déploiement des infrastructures de télécommunication. Portfolio d’une balade infrastructurelle en zone rurale française
Graphics
Core networks and beyond
Understanding the general operation of aggregation networks and the core network.
Fixed access networks
Understand the general operation of a Fibre-to-the-Home (FttH) GPON network.
From ambient air to high purity neon
Simplified overview of the processes involved in extracting neon from an air separation plant.
From silicon to wafer
A simplified view of the silicon purification process, from quartz extraction to wafer.
Manufacturing electronic components
Understanding the simplified process of Integrated Circuits (IC) manufacturing.
Mobile access networks
Understand the general operation of mobile access networks (4G stations, wireless, satellite).
Perimeter of the digital sector
Simplified overview of the activities and segments currently included in what is known as the ‘digital sector’.
Submarine cables
Understanding the deployment of submarine fibre optic cables.
Ultra pure gold processing
Simplified overview of processes from ore extraction to 5N gold production.
Miscellaneous
Net impact assessment methods - Best practices
15 best-practice guides to help you conduct a net impact assessment of digital services - With DDemain, Mavana et Resilone.
Pedagogical life cycle assessment for digital service
Simplified life cycle assessment of a messenging app to understand the basics of digital service assessments.
Sciences Po Paris teaching materials
Full teaching materials for the students attending the class "The futures of digital systems within the environmental crisis"