Cited by 281Green IT and SustainabilityEnvironmental Impact and SustainabilityWater-Energy-Food Nexus Studies

The environmental footprint of data centers in the United States

Open access
Siddik, Md Abu Bakar, Shehabi, Arman, Marston, Landon·2021·Environmental Research Letters

Abstract

Much of the world’s data are stored, managed, and distributed by data centers. Data centers require a tremendous amount of energy to operate, accounting for around 1.8% of electricity use in the United States. Large amounts of water are also required to operate data centers, both directly for liquid cooling and indirectly to produce electricity. For the first time, we calculate spatially-detailed carbon and water footprints of data centers operating within the United States, which is home to around one-quarter of all data center servers globally. Our bottom-up approach reveals one-fifth of data center servers direct water footprint comes from moderately to highly water stressed watersheds, while nearly half of servers are fully or partially powered by power plants located within water stressed regions. Approximately 0.5% of total US greenhouse gas emissions are attributed to data centers. We investigate tradeoffs and synergies between data center’s water and energy utilization by strategically locating data centers in areas of the country that will minimize one or more environmental footprints. Our study quantifies the environmental implications behind our data creation and storage and shows a path to decrease the environmental footprint of our increasing digital footprint.

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Crossref · 10.1088/1748-9326/abfba1

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  • A little more than half (52%) of total data centre emissions is attributable to the Northeast, Southeast, and Central United States.

    “A little more than half (52%) of total data centre emissions is attributable to the Northeast, Southeast, and Central United States, which have a high concentration of thermoelectric power plants as well as a big number of data centres.”
  • Total greenhouse gas emissions attributed to data centres in 2018 were 3.15×10^7 tons CO2-eq, accounting for about 0.5% of total GHG emissions in the United States [144].

    “Total Greenhouse Gas Emissions (GHG) attributed to data centres in 2018 were 3.15 9 107 tons CO2-eq, accounting for about 0.5% of total GHG emissions in the United States [144].”
  • Almost 30% of the emissions from the data centre sector occur in the Central United States, which depends significantly on coal and natural gas to satisfy its energy needs.

    “Almost 30% of the emissions from the data centre sector occur in the Central United States, which depends significantly on coal and natural gas to satisfy its energy needs.”
  • Environmental footprint analyses of AI-focused infrastructure show that direct water use for cooling now represents a substantial share of total water demand, alongside significant indirect water consumption embedded in electricity generation.

    “Environmental footprint analyses of AI-focused infrastructure show that direct water use for cooling now represents a substantial share of total water demand, alongside significant indirect water consumption embedded in electricity generation (Figure 2) [25].”

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Research works printed but not linked: 2

  1. Lawrence A 2020 Rack density is rising (available at: https:// journal.uptimeinstitute.com/rack-density-is-rising/)
  2. Colett J S, Kelly J C and Keoleian G A 2016 Using nested average electricity allocation protocols to characterize electrical grids in life cycle assessment J. Ind. Ecol. 20 29-41 · DOI

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Authors
Siddik, M. A. B., Shehabi, A., & Marston, L.
Affiliations
  • Virginia Tech (US)
  • Lawrence Berkeley National Laboratory (US)
Corresponding author
Marston, Landon
Venue
Environmental Research Letters
Published
2021-05-21
Volume
16
Issue
6
Pages
064017
ISSN
1748-9326 (ISSN-L)
OpenAlex
W3158784237
Cited by
281
References
38
Citations by year
2026: 100 · 2025: 81 · 2024: 36 · 2023: 39 · 2022: 22 · 2021: 3
FWCI
7.34
Type
journal article
Language
en
Open access
Locations
  • Environmental Research Letters (publishedVersion, cc-by)
  • eScholarship (California Digital Library) (submittedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • VTechWorks (Virginia Tech) (submittedVersion, cc-by)
Funders
National Science Foundation (ACI-1639529)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Green IT and Sustainability
  • Physical Sciences › Environmental Science › Environmental Engineering › Environmental Impact and Sustainability
  • Physical Sciences › Environmental Science › Water Science and Technology › Water-Energy-Food Nexus Studies
Keywords
data centers, carbon footprint, water footprint, greenhouse gas emissions, water stress, energy consumption, liquid cooling, power plant location, data center siting, digital footprint, United States

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