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Net-zero greenhouse gas mitigation potential across multi-tier supply chains
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DOI：10.1038/s43247-025-02173-9.png)
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Abstract
En 中文
Attainment of corporate net-zero goals will depend on sufficient mitigation of scope 3 emissions, but implementation is challenged by measurement and management complexities. Here, we investigate the multi-tier greenhouse gas emissions structures of supply chains to assess mitigation potential using environmentally extended input-output models. We find that 56-70% of scope 3 emissions included in current science-based coverage guidance occur within the operational emissions of the first two tiers of supply. To meet net-zero objectives, companies will typically need to reach deep into tiers 4 or 5 of supply, where traceability has proven impractical. Although the two-tier system is insufficient for net-zero, it could be a near-term strategy with potential benefits of reducing disclosure costs and improving data quality, ultimately increasing scope 3 adoption. Our study highlights opportunities for phased scope 3 coverage provisions in emerging policy, and the allowance of high-quality tradable market mechanisms to aggregate deep mitigation efforts.
Keywords:
CARBON FOOTPRINT
SUSTAINABILITY
SERIES
Journal
C
IF:
8.9
Papers:
1.2K
Citations:
1.1W