J Sainsbury scores 10 points higher than Tesco PLC on SINK's sustainability index.
J Sainsbury is more sustainable according to SINK's open sustainability index, scoring 44/100 vs Tesco PLC's 34/100 — a difference of 10 points.
Tesco PLC scores 34/100 on the SINK sustainability index (Below expectations). Tesco has decarbonized operations fast (65% Scope 1&2 reduction) and reached 100% renewable electricity a decade early. But 90% of its 59-million-tonne footprint sits in Scope 3—which hasn't fallen. Supply chain harms are documented: Amazon deforestation via Cargill soy, River Wye pollution from poultry units, and a shelved WWF report. Targets are science-backed but physical impact lags ambition.
J Sainsbury scores 44/100 on the SINK sustainability index (Below expectations). Sainsbury's has delivered a 52.8% absolute Scope 1+2 reduction since 2019 and secured 100% renewable electricity since 2022, backed by SBTi validation and a decade of CDP A ratings. However, Scope 3 remains 96% of emissions with limited evidence of absolute reduction, and animal welfare breaches in supply chains signal governance gaps that offset otherwise solid environmental performance.
Both companies are rated on the same 10-question SINK rubric: Scope 1/2/3 carbon footprint, energy source, nature and biodiversity, resource use, water, emissions trajectory, science-based targets, transparency, and controversies. Scores are 0–100, based on public data, and fully reproducible.
See the full leaderboard — 500+ companies ranked.
View full leaderboard →