Study Links Digitalization and CO2 Emissions
New research emphasizes the interconnectedness of digital and energy policies, revealing a concerning link between information communication technologies (ICT) and carbon dioxide emissions. The study conducted by researchers from North Carolina State University and Eastern Illinois University analyzed the impact of digitalization on CO2 emissions, concluding that increased digitalization is correlated with higher emissions.
Eiman Aiyash, a lecturer at North Carolina State University and co-author of the study, noted, “Fundamentally, we wanted to determine whether digitalization has helped to lower carbon dioxide (CO2) emissions.” The researchers focused on three indicators of digitalization—internet usage, fixed telephone subscriptions, and mobile cellular subscriptions—utilizing mediation analysis to explore both direct and indirect relationships affecting emissions.
Research Methodology and Findings
The study utilized data from G20 economies spanning from 1990 to 2023. This group, which includes 19 countries and the European Union, represents a significant portion of global economic activity and CO2 output. The analysis incorporated CO2 emission data alongside the three digitalization proxies while considering factors such as real GDP and population growth.
Employing panel regression and mediation analysis, the researchers observed a significant positive correlation between digitalization and CO2 emissions. This suggests that the growth of ICT in these economies has contributed to increased environmental strain rather than alleviating it. Notably, the research indicated that only a small fraction of the relationship could be attributed to indirect effects through industry and trade, with 96% to 98% of the correlation being direct.
Implications for Energy Systems
The findings are interpreted as reflective of the substantial energy demands posed by digital infrastructure, combined with the carbon intensity of the electricity systems that support it. Ahmed Abou-Zaid, another co-author of the study and a professor at Eastern Illinois University, remarked, “Our study shows that digitalization is not inherently green: in the G20, information communication technology expansion is associated with higher CO2 emissions.”
The researchers emphasize the necessity for policymakers to evaluate digital advancements not only in terms of connectivity but also regarding environmental sustainability. They recommend that policymakers consider factors such as the carbon intensity of electricity for digital infrastructure, energy efficiency, reliance on renewable energy sources, and the impact of existing regulations.
Call for Coordinated Policy Approaches
The study advocates for a coordinated policy framework that interlinks digital, energy, industrial, and climate objectives, rather than treating them as distinct areas. Aiyash asserts that such an integrated strategy is crucial to ensure that ongoing digitalization supports broader environmental and decarbonization efforts.
The research paper, titled “ICT and CO2 Emissions in the G20: A Channel-Based Mediation Analysis,” was published open-access in the journal Sustainability on September 8. The lead author of the paper is Sami Alabdulwahab from King Faisal University in Saudi Arabia, with the study receiving support from an Ambitious Researcher Grant from the same institution.
Source: NC State University
