Abstract
Indirect environmental effects of information and communication technology (ICT) are those effects of ICT that change patterns of production or consumption in domains other than ICT, or more precisely, the environmental consequences of these changes. Digitalization as the societal process of ICT-driven change has created increasing interest in the indirect environmental effects of this technology. Assessments of indirect effects face various methodological challenges, such as the definition of the system boundary, the definition of a baseline as a reference or the occurrence of rebound effects. Existing studies use various approaches or methods to assess a spectrum of ICT use cases in several application domains. In view of the large number of assessments that have been conducted, the choices made when applying assessment methods, and the variety of ICT use cases in different application domains investigated, we present a systematic literature review of existing assessments of indirect environmental effects of ICT. The review provides a state-of-the-art overview of the methods used in the research field and is intended to support researchers in designing sound assessments which yield significant results. We identified 54 studies in seven main application domains using 15 different assessment approaches. The most common application domains are virtual mobility (e.g., telecommuting), virtual goods (e.g., digital media), and smart transport (e.g., route optimization). Life-cycle assessment, partial footprint, and the “ICT enablement method” are the most common approaches. The major part of the assessments focuses on patterns of production (e.g., production of paper-based books vs. e-books), a smaller part on patterns of consumption (e.g., changes in media consumption). Based on these results, we identify as a research gap the investigation of ICT impacts on consumer behavior, which could, for example, focus on social practices, and account for the dynamic implications of change. Elaborating such an approach could provide valuable insights into ICT’s impact on society and the resulting environmental consequences.
Highlights
Information and communication technology (ICT) has direct and indirect effects on the environment
Researchers usually conduct some type of environmental impact assessment of indirect effects of ICT, which can be defined as “the process of identifying the environmental consequences of an ICT solution’s capacity to change existing consumption and production patterns, taking into account the interrelated socio-economic, cultural, and human-health impacts, both beneficial and adverse, with the aim of informing decision-makers or the general public and mitigate unfavorable or promote favorable environmental consequences” [8] (p. 3)
In view of the large number of assessments which have been conducted, the choices made when applying assessment methods, and the variety of ICT application domains investigated, we provide a review of existing studies on indirect environmental effects of ICT
Summary
Information and communication technology (ICT) has direct and indirect effects on the environment. Studies assessing indirect effects often conclude that they are desirable from an environmental perspective (e.g., reducing greenhouse gas (GHG) emissions) and that they are in total clearly larger than the direct effects (e.g., leading to a net reduction of GHG emissions) [4,5,6,7] To quantify these effects, researchers usually conduct some type of environmental impact assessment of indirect effects of ICT, which can be defined as “the process of identifying the environmental consequences of an ICT solution’s capacity to change existing consumption and production patterns, taking into account the interrelated socio-economic, cultural, and human-health impacts, both beneficial and adverse, with the aim of informing decision-makers or the general public and mitigate unfavorable or promote favorable environmental consequences” [8] Researchers usually conduct some type of environmental impact assessment of indirect effects of ICT, which can be defined as “the process of identifying the environmental consequences of an ICT solution’s capacity to change existing consumption and production patterns, taking into account the interrelated socio-economic, cultural, and human-health impacts, both beneficial and adverse, with the aim of informing decision-makers or the general public and mitigate unfavorable or promote favorable environmental consequences” [8] (p. 3)
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