Octopus Energy Group is a UK-based energy retailer and generator founded in 2010, headquartered in London.
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Octopus Energy has built comprehensive baseline emissions data and SBTi-verified net-zero targets covering all scopes, yet operational emissions are rising due to rapid growth. The company sources 100% renewable electricity via REGOs and PPAs, but relies on tradable certificates for 80% of supply—undermining additionality claims. Weak spots: no quantified nature footprint, minimal waste reporting, and unresolved incinerator controversy in Scotland.
Octopus Energy Group scores 39/100 (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 Octopus Energy Group joint 385th of 847 companies scored, and 8th of 20 in Energy Supply / Utilities.
Where Octopus Energy Group sits among energy supply / utilities peers.
Among the 20 major energy supply / utilities brands we've scored, Octopus Energy Group sits 8th of 20.
Its three lowest-scoring questions, and what the evidence didn't show.
No quantified waste data, circular economy targets, or comprehensive resource reporting.
No published water consumption data, footprint, or stewardship programme.
FY2024 is baseline year; no prior group-level comparison.
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 Targets & Commitments and Carbon Footprint — Operations (9/10, 7/10). Weakest on Resource Use & Waste and Water Impact (3/10, 3/10).
The 3 companies in the sector scoring nearest above Octopus Energy Group.
OVO Energy reports detailed operational emissions cuts and has ditched greenwashing REGOs, but 9.8Mt of annual Scope 3 from gas supply to 4 million customers overwhelms progress.
See the breakdown →E.ON has SBTi-validated 1.5°C targets with absolute reduction commitments, but delivery remains unverified.
See the breakdown →Vattenfall has cut Scope 1+2 emissions 53% since 2017 and operates 90% fossil-free generation, backed by SBTi validation.
See the breakdown →The formula and all 13 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale13 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
If you believe a source has been misread or a newer version exists, submit a challenge.
Octopus Energy Group is a UK-based energy retailer and generator founded in 2010, headquartered in London. The company supplies electricity and gas to over 3 million UK households and businesses, operates 4.9GW of renewable generation capacity, and manufactures heat pumps through its RED subsidiary. It is a major player in the UK energy transition and a prominent investor in distributed renewables infrastructure.
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