Ecotricity is a UK energy supplier and renewable generator founded in 1995, headquartered in Stroud.
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Ecotricity supplies 100% green electricity but 99% fossil gas, masking its true emissions footprint. The company does not formally report Scope 3 combustion emissions (~293,000 tonnes CO₂e annually). A 2024 greenwashing investigation exposed carbon credit gaps. Operational emissions have fallen sharply, but the core business model remains unaligned with climate claims.
Ecotricity scores 45/100 (Below expectations) on SINK's independent climate assessment, scored from public data only. Fees pay for the review, never the result. Last verified May 2026.
That places Ecotricity joint 258th of 847 companies scored, and 3rd of 20 in Energy Supply / Utilities.
Where Ecotricity sits among energy supply / utilities peers.
Among the 20 major energy supply / utilities brands we've scored, Ecotricity sits 3rd of 20.
Its three lowest-scoring questions, and what the evidence didn't show.
Ecotricity does not publicly report downstream Scope 3 combustion emissions from 167,000 customers supplied 99% fossil gas.
Gas supply remains 99% fossil with no material near-term reduction pathway.
No waste metrics, circular targets, or wind/solar hardware lifecycle reporting.
A score changes when the evidence does. We use new published evidence at the next rescore. Evidence that isn't public can count through an evidence review.
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Get in touch →Strongest on Energy Source and Carbon Footprint — Operations (8/10, 6/10). Weakest on Carbon Footprint — Supply Chain and Emissions Trajectory (2/10, 3/10).
The 2 companies in the sector scoring nearest above Ecotricity.
ScottishPower has structurally exited fossil fuel generation and now sources 100% renewable electricity, with parent Iberdrola holding SBTi-validated net-zero targets.
See the breakdown →VERBUND is 96% renewable-powered but emissions rose 4% in 2024 as gas generation recovered.
See the breakdown →The formula and all 7 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale7 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
This company's public sustainability disclosure is limited. This score is based on the 7 verified sources cited below, rather than padded to a standard count.
Limited data coverage. This assessment is based on 7 sources, 57% of which are self-reported by the company. Scores may change as independent evidence becomes available.
If you believe a source has been misread or a newer version exists, submit a challenge.
Ecotricity is a UK energy supplier and renewable generator founded in 1995, headquartered in Stroud. It serves approximately 167,000 customers with 100% green electricity from owned wind and solar assets (87.2 MW operational) and grid supply. The company also retails gas, 99% from fossil sources, and operates a reinvestment model ('Bills into Mills') funding new renewable capacity and nature projects.
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