---
title: UK energy suppliers AI reputation tracker – September 2026
canonical_url: https://www.omniscan.ai/ai-benchmarks/uk-energy-suppliers
type: dataset
publisher: Omniscan
sector: UK energy suppliers
assistants: ChatGPT, Claude, Google
date_published: '2026-09-20'
last_updated: '2026-09-20'
companies: 13
questions: 10
data_download: https://www.omniscan.ai/ai-benchmarks/uk-energy-suppliers/data.json
summary: Octopus Energy is named in 83% of AI answers, more than any other supplier.
  Among suppliers named in at least one answer in five, 100Green and Ecotricity are
  described most positively (100% of mentions) and Tru Energy is described most negatively
  (100%).
---

# UK energy suppliers AI reputation tracker (September 2026)

> Octopus Energy is named in 83% of AI answers, more than any other supplier. Among suppliers named in at least one answer in five, 100Green and Ecotricity are described most positively (100% of mentions) and Tru Energy is described most negatively (100%).

Interactive version: https://www.omniscan.ai/ai-benchmarks/uk-energy-suppliers

## Which suppliers AI names

Share of AI answers that mention each supplier.

| Supplier | All assistants | ChatGPT | Claude | Google |
| --- | --- | --- | --- | --- |
| Octopus Energy | 83% | 80% | 100% | 67% |
| British Gas | 64% | 46% | 86% | 58% |
| E.ON | 59% | 50% | 82% | 44% |
| EDF | 53% | 44% | 62% | 53% |
| OVO Energy | 45% | 40% | 72% | 21% |
| ScottishPower | 41% | 38% | 58% | 26% |
| 100Green | 33% | 26% | 56% | 14% |
| E (Gas & Electricity) | 29% | 14% | 46% | 28% |
| Ecotricity | 29% | 12% | 66% | 7% |
| Tru Energy | 27% | 10% | 42% | 28% |
| Utilita | 27% | 16% | 34% | 30% |
| Good Energy | 23% | 12% | 34% | 23% |
| Fuse Energy | 10% | 6% | 20% | 5% |

## How AI describes them

Tone of each supplier's own mentions in AI answers.

| Supplier | Positive | Neutral | Negative | Net tone |
| --- | --- | --- | --- | --- |
| 100Green | 100% | 0% | 0% | +100 |
| Ecotricity | 100% | 0% | 0% | +100 |
| Octopus Energy | 97% | 3% | 0% | +97 |
| Fuse Energy | 93% | 7% | 0% | +93 |
| E (Gas & Electricity) | 90% | 5% | 5% | +85 |
| Good Energy | 91% | 3% | 6% | +85 |
| E.ON | 85% | 14% | 1% | +84 |
| OVO Energy | 43% | 12% | 45% | −2 |
| EDF | 45% | 7% | 49% | −4 |
| British Gas | 30% | 4% | 66% | −36 |
| Utilita | 18% | 11% | 71% | −53 |
| ScottishPower | 15% | 12% | 73% | −58 |
| Tru Energy | 0% | 0% | 100% | −100 |

## Who AI singles out, question by question

Shares are of the answers to that question.

- **Which UK energy supplier has the best customer service?** Most often picked: Octopus Energy (80%). Most criticised: British Gas (90%).
- **Which energy supplier is cheapest right now, and should I fix my tariff?** Most often picked: Fuse Energy (20%). Most criticised: British Gas (27%).
- **Which UK energy suppliers get the most complaints?** Most criticised: British Gas (80%).
- **Which UK energy supplier is the greenest?** Most often picked: Good Energy (50%).
- **Which energy supplier is best for a smart meter, heat pump or solar panels?** Most often picked: Octopus Energy (100%).
- **Which energy supplier is best if you are on a prepayment meter or struggling to pay?** Most often picked: Octopus Energy (47%). Most criticised: British Gas (27%).
- **Which UK energy supplier is best for electric car owners?** Most often picked: Octopus Energy (73%).
- **How do I complain about my energy supplier, and which are worst at fixing problems?** Most often picked: Energy Ombudsman (40%). Most criticised: British Gas (100%).
- **Which UK energy suppliers have the most accurate billing?** Most often picked: Octopus Energy (29%). Most criticised: British Gas (86%).
- **Should I switch energy supplier, and who is best to switch to?** Most often picked: Octopus Energy (53%). Most criticised: EDF (33%).

## By assistant

- ChatGPT: Octopus Energy is named most often (80% of its answers).
- Claude: Octopus Energy is named most often (100% of its answers).
- Google: Octopus Energy is named most often (67% of its answers).

## Sources AI cites

| Website | Answers citing it |
| --- | --- |
| citizensadvice.org.uk | 42% |
| ofgem.gov.uk | 37% |
| which.co.uk | 37% |
| moneysavingexpert.com | 27% |
| uswitch.com | 24% |
| octopus.energy | 17% |
| moneysupermarket.com | 15% |
| switch-pilot.com | 13% |

The most-cited supplier website is octopus.energy (17% of answers).

## Method

10 questions UK customers ask, put repeatedly to ChatGPT, Claude and Google AI Overviews with the United Kingdom as the user's location, 20 September 2026. Naming figures are shares of all answers; tone figures are shares of each supplier's own mentions. Recommendations for communications teams and the full PDF report are available on the interactive page.

## How to cite

Omniscan, "UK energy suppliers AI reputation tracker", September 2026. https://www.omniscan.ai/ai-benchmarks/uk-energy-suppliers