Energy Supply / Utilities·Bristol, UK·Founded 2009

OVO Energy sustainability score: 42/100

OVO Energy is a UK-based energy retailer supplying gas and electricity to approximately 4 million customers.

Is this your business? Add your evidence →

Pending reviewStrong evidence· 17 src

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. Repeated regulatory fines for customer harm and billing failures, combined with intensity-based (not absolute) renewable targets, reveal a company still far from credible decarbonisation.

OVO Energy scores 42/100 (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 OVO Energy joint 317th of 847 companies scored, and 5th of 20 in Energy Supply / Utilities.

At a glance

OVO Energy's strongest and weakest areas

Strongest
  • Emissions from its own operations7/10
  • Emissions from its supply chain6/10
Weakest
  • How it uses materials and handles waste3/10
  • Its effect on water3/10
See all ten questions ↓
OVO Energy in context

How does OVO Energy compare with other energy supply / utilities companies?

Where OVO Energy sits among energy supply / utilities peers.

Among the 20 major energy supply / utilities brands we've scored, OVO Energy sits 5th of 20.

5/20
OVO Energy's rank
37
Industry average
25
Industry low
51
Industry high
See all 20 in Energy Supply / Utilities →
What would raise this score

Where OVO Energy lost the most points

Its three lowest-scoring questions, and what the evidence didn't show.

  1. How it uses materials and handles waste3/10

    No quantified waste targets, circular economy metrics, or landfill diversion rates reported.

  2. Its effect on water3/10

    OVO is an energy retailer with no generation assets or manufacturing.

  3. Whether its emissions are falling4/10

    However, Scope 3 target for sold electricity is intensity-based, not absolute.

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.

For OVO Energy

Is this your company?

  • Use this score in tenders

    Send the link, or the one-page score sheet. It links back to this page and every source. Free.

    Open the score sheet →
  • Add your evidence, £99

    Scored low because little is published? Send us your evidence. A person reviews it and your score reflects what you really do. Done within 5 working days.

    Evidence review →
  • Go tender-ready, £495 a year

    A yearly rescore, a check of up to 25 key suppliers and a score badge for your website (coming soon).

    Get in touch →
Fees pay for the review, never the result.
The ten questions

What is OVO Energy doing well, and where does it fall short?

Strongest on Carbon Footprint — Operations and Carbon Footprint — Supply Chain (7/10, 6/10). Weakest on Resource Use & Waste and Water Impact (3/10, 3/10).

Method and evidence

How we worked this out

The formula and all 17 sources.

About OVO Energy

OVO Energy is a UK-based energy retailer supplying gas and electricity to approximately 4 million customers. Founded in 2009 in Bristol, OVO operates as a public utility offering energy retail services. The company has positioned itself around climate commitments and nature initiatives but remains structurally tied to fossil gas supply.

Founded
2009
Headquarters
Bristol, UK
Employees
~4,500
Annual revenue
~£5B
Company website ↗
THE SUNDAY RUNDOWN

Which companies moved this week, and why.

One email, every Sunday. Score changes, new research, the stories behind the numbers. Free.

No spam. Unsubscribe in one click.

Checking a company?

Search free →

Asked to prove you're sustainable?

Get your business scored, free →

Been scored?

See what's behind your number →

Fees pay for the review, never the result.