Costco reports operational emissions data but remains massively off-track on its 2030 climate target, having achieved only 5% of planned Scope 1&2 reductions while absolute Scope 3 emissions rose 9% since 2020. The company has no deforestation commitments despite driving boreal forest destruction through tissue products and lacks SBTi validation. Shareholder pressure, not proactive governance, drives action.
Same formula for every company. No curve. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleStrongest on Controversies & Red Flags and Carbon Footprint — Operations (6/10, 5/10). Weakest on Nature & Biodiversity Impact and Emissions Trajectory (2/10, 2/10).
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Among the 42 major retail (non-fashion) brands we've scored, Costco Wholesale sits 41st of 42.
Score history begins 4 April 2026.
As Costco Wholesale's score updates, the trajectory will appear here.
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Costco Wholesale is a US-based membership warehouse club and the world's largest retailer of bulk goods, including significant food and beverage sales. Founded in 1976 and headquartered in Issaquah, Washington, it operates 890+ warehouses globally with a business model centered on high-volume, low-margin sales.
Larger US retailer with stronger renewable energy commitment and SBTi validation; comparable supply-chain deforestation risks.
View breakdown →UK supermarket with published deforestation commitments and third-party verified sustainability reporting; stronger transparency baseline.
View breakdown →Major meat supplier sharing Costco's sourcing footprint; both face pressure on agricultural deforestation and climate intensity.
View breakdown →US retailer peer with comparable scale; has adopted SBTi targets and published Forest Stewardship commitments Costco lacks.
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