Border Carbon Adjustment

This research paper by Aaron Cosbey of the International Institute for Sustainable Development (IISD) examines the conceptual, legal, and geopolitical challenges of implementing Border Carbon Adjustments (BCAs). It analyzes BCAs as tools to address industrial competitiveness and carbon leakage, while evaluating their compatibility with World Trade Organization (WTO) rules and their potential impact on international climate negotiations.

• Border carbon adjustments (BCAs) are proposed to mitigate competitiveness concerns and carbon leakage, and to pressure major developing countries to accept binding commitments in post-2012 climate negotiations.
• Industrial vulnerability to climate policies is concentrated in a small number of energy-intensive sectors, specifically steel, aluminum, paper, chemicals, and cement.
• To be WTO-legal, BCAs must adhere to the national treatment and most favoured nation (MFN) principles, meaning they cannot discriminate between domestic and foreign producers of 'like' products or between different exporting countries.
• If BCAs rely on GATT General Exceptions (Article XX) for legality, they must account for all climate-related policies of trading partners and allow for individual producer efficiency rather than using national baselines.
• The administrative feasibility of BCAs is low because they would require complex, plant-by-plant verification of carbon footprints and a common metric to compare diverse national climate policies.
• BCAs may be ineffective if trade flows simply re-route through third countries or if the covered goods represent a small fraction of the target country's total production.
• Implementing BCAs could trigger severe geopolitical backlash from developing nations, who may view them as 'eco-imperialism' or disguised protectionism, potentially hindering international climate cooperation.

APA

International Institute for Sustainable Development (n.d.). Border Carbon Adjustment. https://www.iisd.org/system/files/publications/cph_trade_climate_border_carbon.pdf

Chicago

International Institute for Sustainable Development. Border Carbon Adjustment. n.d. https://www.iisd.org/system/files/publications/cph_trade_climate_border_carbon.pdf.

Wikipedia

{{cite report |author=International Institute for Sustainable Development |title=Border Carbon Adjustment |url=https://www.iisd.org/system/files/publications/cph_trade_climate_border_carbon.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{internationalinstituteforsustainabledevelopmentndborder, author = {{International Institute for Sustainable Development}}, title = {{Border Carbon Adjustment}}, institution = {International Institute for Sustainable Development}, url = {https://www.iisd.org/system/files/publications/cph_trade_climate_border_carbon.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }