J Sainsbury scores 9 points higher than Tesco on SINK's sustainability index.
J Sainsbury is more sustainable according to SINK's open sustainability index, scoring 42/100 vs Tesco's 33/100 — a difference of 9 points.
Tesco scores 33/100 on the SINK sustainability index (Below expectations). Tesco has achieved genuine operational decarbonization (65% Scope 1&2 reduction since 2015) and secured 100% renewable electricity via large corporate PPAs. However, Scope 3 emissions—representing 90% of its footprint—remain flat since 2020. Material supply chain failures include documented Amazon deforestation via Cargill soy and River Wye pollution from intensive chicken farming, both breaching stated commitments.
J Sainsbury scores 42/100 on the SINK sustainability index (Below expectations). Sainsbury's has delivered material Scope 1 & 2 reductions (52.8% absolute) and secured 100% renewable electricity across its estate. Scope 3 emissions—98% of footprint—lack confirmed absolute reductions. Supply chain and nature commitments remain largely forward-looking, not yet evidenced in delivery.
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 →