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Which countries can competitively export complex environmental goods, and which green products sit closest to their existing capabilities. Built on the OECD Combined List of Environmental Goods and TradeWeave's product space engine (RCA, PCI, proximity density).
Source: OECD (2014), Combined List of Environmental Goods (CLEG), 248 HS2007 codes; OECD Trade and Environment Working Paper 2014/03, Annex 1 (retrieved 2026-05-28) | BACI 202601 (CEPII), HS96, 1996-2024 (retrieved 2026-06-01) | OECD GHG footprints in global production networks (TECO2 successor), 1995-2022
Methodology: Green-products classification: OECD Combined List of Environmental Goods (CLEG), which unions the WTO Friends list (2009), the APEC list (2012) and a modified PEGS list into 248 HS2007 six-digit codes. The staged HS92 list was remapped onto the V202601 HS96 core with the repo-local concordance; 237 lines survived verbatim and 7 split legacy lines expanded to 23 HS96 descendants, yielding 260 distinct green HS96 products with no unmapped residuals. The Green Complexity Index follows Mealy & Teytelboym (2022, Research Policy): the PCI-weighted sum of green products in which a country has RCA >= 1; their own green-products list is available on request only and is not used here. Opportunity density per Hidalgo et al. (2007). Coverage: 260 of the 5,115 HS96-universe HS6 products tagged green; 233 countries scored; embodied-CO2 for 80 economies, 1995-2022.