Ecotricity sustainability score: 33/100
Better than 25% of Energy Supply / Utilities
Making progress starts at 46. The highest score on SINK is 71.
Ecotricity is a UK energy supplier headquartered in Stroud; Ecotricity Group Ltd was incorporated in 1998. It owns 74 wind turbines and three solar parks, supplying 188,000 meter points with renewable electricity.
More about Ecotricity
It also sells fossil gas offset via carbon credits. Revenue £553m (FY2025); ~640 employees.
Founded 1998Head office Stroud, UKStaff ~640 (2025)Revenue £553.1M revenue (FY ended 30 Apr 2025)Website ↗
Ecotricity supplies 100% renewable electricity but sources 99% of its gas from fossil reserves, marketed as 'carbon-neutral' through purchased offsets. Scope 3 emissions from sold gas are undisclosed. Operational footprint rose in 2024/25. No independent verification of claims.
Ecotricity scores 33/100 (Below expectations) on SINK's independent climate assessment, scored from public data only. Scores are free. Nobody can pay to change a score, speed it up or hide it. Last verified November 2026.
That places Ecotricity joint 629th of 1,023 companies scored, and 16th of 21 in Energy Supply / Utilities.
What is Ecotricity doing well, and where does it fall short?
Strongest on Energy Source and Controversies & Red Flags (8/10, 7/10). Weakest on Carbon Footprint: Supply Chain and Emissions Trajectory (2/10, 3/10).
Where Ecotricity lost points
For each question that lost points, the evidence our public rubric looks for that we didn't find.
What would raise this score
- Emissions from its supply chainAssess where its supply-chain emissions come from.
- Whether its emissions are fallingShow its emissions are falling.
- How it uses materials and handles wasteShow active waste reduction, reuse or repair.
Every question that lost points
- Emissions from its own operations6/10Its own emissions aren't independently verified or tracked over several years.
- Emissions from its supply chain2/10No assessment of where its supply-chain emissions come from.
- Whether its emissions are falling3/10No evidence its emissions are falling.
- How clean its energy is8/10Its own operations aren't shown to run on 100% renewable energy.
- Its effect on nature4/10Its effect on nature isn't measured or independently verified.
- How it uses materials and handles waste3/10No active waste reduction, reuse or repair shown.
- Its effect on water4/10No measured water footprint with reduction targets.
- Its climate targets3/10No specific targets with dates.
- How openly it reports4/10No dedicated sustainability role, board oversight or public report.
- Its record on controversies7/10Points deducted for controversies or its business model. The finding is under question 10.
A score changes when the evidence does. We use new published evidence at the next rescore. Anyone can send us new evidence, free. How to send it.
How is Ecotricity's SINK score calculated?
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleHas Ecotricity's score changed?
Ecotricity's score has moved from 45 to 33 across 2 recorded reviews, down 12 points.
- 45 → 33-126 November 2026
Re-scored under the current method. Scope 3 leaves out the gas it sells, so the cautious 0.70x size deduction applies (owner sign-off 2026-11-06).
- Scored 454 April 2026
Initial score at platform launch
What evidence is Ecotricity's score based on?
16 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
25% of them were published by Ecotricity itself; the rest come from independent sources.
12 of 16 sources are independent of the company.
“Total Emissions 556 575 431 461 429 472 409 452”
“This is the sixth consecutive year that the Group has published its carbon emissions data as a “large” unquoted”
“Number of meter points on supply: 188,000 (2024: 167,000)”
“About 1% of the gas we supply comes from green gas mills, the rest is fossil gas.”
“Yet 99% of the gas it supplies comes from fossil fuels.”
“CO2 Emissions 0g per kWh 147g per kWh”
“Ecotricity scored 75 per cent, achieving the highest individual renewable energy score of 11 out of 12.”
“has pledged to provide mitigation habitat for farmland birds that risk being displaced on a field that it has earmarked for construction of a solar park”
“Heckington Fen Solar Park, a development owned by Mr Vince’s renewable energy company Ecotricity, was given the green light late last week by ministers.”
“It has not been disclosed exactly where Ecotricity gets its carbon offsets from”
“We’re ending offsetting through carbon credits for our household gas”
“a proactive and responsible stance in lobbying for more stringent climate legislation”
“Under and between the solar panels at our sun parks, we establish species-rich grasslands.”
“Ten energy suppliers will pay £7 million in compensation and refunds after overcharging more than 34,000 customers”
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How does Ecotricity compare with other energy supply / utilities companies?
Where Ecotricity sits among energy supply / utilities peers.
Among the 21 major energy supply / utilities brands we've scored, Ecotricity sits 16th of 21.
Who scores higher in Energy Supply / Utilities?
The 3 companies in the sector scoring nearest above Ecotricity.
Octopus Energy cut its own operational emissions, but its total footprint keeps rising as it supplies more customers, because gas burned by those customers dominates.
See the breakdown →DCC is a fossil-fuel distributor whose 37 million tCO2e Scope 3 emissions dwarf operational progress.
See the breakdown →ENGIE reports comprehensive operational emissions with third-party verification and genuine 41% absolute reductions since 2017.
See the breakdown →Which companies moved this week, and why.
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