Exploring Digitalisation’s Footprint

Value of the Information & Strength of the Argument

The talk provides valuable insights into the often-overlooked direct footprint of digitalisation, particularly data centres. It synthesises existing projections and introduces a scenario-based approach using SSPs, which adds credibility and allows for comparison with climate models. The argumentation is logical, moving from current status to future projections and then to implications for climate targets and material security. The speaker acknowledges uncertainties and overestimation risks, using historical phases to bound projections. The discussion on critical raw materials highlights supply chain concentration and geopolitical tensions, adding a broader perspective. However, the talk is a seminar presentation and lacks detailed methodological transparency, which limits the ability to fully assess the robustness of the projections.

Scientific Rigor, Source Quality, Title Accuracy

The talk references IEA projections and mentions a study on embodied emissions, but specific citations are not provided in the presentation. The use of SSPs is well-established and adds scientific rigour. The title accurately reflects the content, which is a focused exploration of data centre footprints. The talk is based on the speaker’s research, but without published sources, the rigour is moderate. The speaker does not provide a detailed literature review, but the scenario framework is credible. Overall, the scientific rigour is acceptable for a seminar talk, but would benefit from explicit references.

The title accurately reflects the content, which explores the environmental footprint of digitalisation, focusing on data centres.

7/10

The talk presents a structured analysis of data centre energy and material footprints, using established scenarios (SSPs) and referencing IEA projections. However, it is a seminar presentation without peer-reviewed publication details, and some claims lack explicit citations.

Markers derived by PSI from the transcript: the creator did not define chapters.

• 02:00Introduction to digitalisation waves and direct vs indirect footprints.
• 05:00Focus on data centres as the hidden backbone, with statistics on global data centre numbers and capacity.
• 10:00Discussion of data centre size and power capacity, with comparisons to UK homes and landmarks.
• 15:00Overview of existing projections for data centre energy use, noting they stop at 2030.
• 20:00Introduction of SSP scenarios and their relevance for long-term projections.
• 25:00Analysis of historical electricity consumption phases and the use of PUE as an efficiency metric.
• 30:00Presentation of projections to 2050, showing electricity consumption under different SSPs.
• 35:00Assessment of whether data centres could put Paris targets out of reach, with renewable energy scenarios.
• 40:00Discussion of material footprint, critical raw materials, and supply chain concentration.
• 45:00Clarification of rare earth vs critical raw materials and rock-to-metal ratios.

• IEA Electricity 2024 report — Referenced for projections of data centre electricity consumption up to 2030.
• Shared Socioeconomic Pathways (SSPs) — Used as the scenario framework for long-term projections.

• IEA Electricity 2024 report — Provides projections for data centre electricity consumption that align with the talk's near-term estimates.