British Gas operates as a major UK energy supplier still heavily reliant on fossil fuels, with 39.1Mt annual emissions dominated by customer gas use. Centrica lacks SBTi validation, purchased discredited carbon credits, lobbies for continued gas heating, and projects near-term emissions increases despite intensity-based reductions.
Same formula for every company. No curve. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleStrongest on Carbon Footprint — Operations and Transparency & Accountability (7/10, 6/10). Weakest on Nature & Biodiversity Impact and Water Impact (1/10, 2/10).
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Among the 17 major energy supply / utilities brands we've scored, British Gas sits 14th of 17.
Score history begins 8 February 2026.
As British Gas's score updates, the trajectory will appear here.
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British Gas, part of Centrica, is a major UK and Ireland energy supplier providing gas, electricity, and heating services to millions of residential and business customers. The company also operates Spirit Energy, an upstream oil and gas producer, and manages 16.7GW of renewable and flexible generation capacity.
Upstream oil/gas producer with renewable energy claims; both face credibility gaps on transition pace and offsetting integrity.
View breakdown →European energy major with fossil fuel operations, unvalidated climate targets, and similar supply-chain emissions dominance via customer use.
View breakdown →UK energy supplier peer with similar customer-dominated emissions profile; comparative transition strategy and target robustness.
View breakdown →UK renewable-focused energy supplier; useful contrast on market approach to decarbonisation and offsetting practices.
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