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by Projet Celsius
Projet Celsius
AI Impact Database
Paris seen from above, the business district in the distance
Database topicClimate

Cities, territories, populations

The AI use of a city, a territory or a population over one year.

1 territory, 1 year · servers worldwideFrance, use by residents, 1 year13ktCO2eOffice workers4.6 ktFrance, inhabitants13 ktEuropean Union, inhabitants77 ktestimated1 territory, 1 yearcalculation of the database
Electricity · 2025Emissions of one kilowatt-hour by country of the servers458gCO2e/kWhPoland589 gWorld458 gFrance41.4 gLife cycle, the same source everywhereEmber, 2025

Emissions of one year of use, 15 territories and populations

3 blocks of values, from the lightest to the heaviest. Each block has its own graduation or key; the heaviest of a block is redrawn as a dotted line at the head of the next block.

From 380 kgCO2e to 94 tCO2e4 territories and populations

2 tCO2e

  1. Village (2,000)380 kgCO2e
  2. Town (20,000)3.8 tCO2e
  3. Town (100,000)19 tCO2e
  4. Large city (500,000)94 tCO2e

From 270 tCO2e to 4.6 ktCO2e8 territories and populations

  1. Large city (500,000)the heaviest of the previous block94 tCO2e
  1. Aged 65 and over270 tCO2e
  2. Metropolis (2 million)380 tCO2e
  3. Public employees640 tCO2e
  4. Pupils and students1.5 ktCO2e
  5. Under 252.2 ktCO2e
  6. Île-de-France, inhabitants3.2 ktCO2e
  7. Aged 25 to 644.1 ktCO2e
  8. Office workers4.6 ktCO2e

From 13 ktCO2e to 640 ktCO2e3 territories and populations

  1. Office workersthe heaviest of the previous block4.6 ktCO2e

10 ktCO2e

  1. France, inhabitants13 ktCO2e
  2. European Union, inhabitants77 ktCO2e
  3. World, inhabitants640 ktCO2e
One graduation or key per block of values. Default settings of each entry, over the life cycle. Servers worldwide. Calculation of the AI Impact Database of Projet Celsius.

All the entries of the topic

15 entries, each with its entry page: composition, assumptions and sources. With no named source, the value is a calculation of the database.

Territories

Typical cities5

Regions, countries and world4

Populations6

Header photo: Arthur Weidmann, Wikimedia Commons, CC BY-SA 4.0.

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The other topics of the database

Database topicOrganisations and servicesPrevious topicThe 18 entriesDatabase topicMajor AI servicesNext topicThe 8 entriesDatabase topicElectricity and data centresThe 11 entries

Across the hub

The reference chartsFrom the pollution of each AI to the electricity used by data centres, each with its data and sources.See the chartsWorld mapsCarbon intensity of electricity, low-carbon share, water stress, country by country.Explore the mapsThe calculation toolsEstimate the footprint of your uses, compare the country of the servers, browse the orders of magnitude.Open the tools

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Projet Celsius, which runs this hub, also helps companies measure and reduce the footprint of their AI use.

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We support companies that account for AI in their Bilan Carbone®

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