AI visibility index, September 2026
UK energy suppliers: who AI recommends
We asked 6 buyer questions in ChatGPT, Perplexity and Gemini, 18 answers in all. None of the questions named a brand. This is how often each brand came up.
| # | Brand | Share of answers | Change | Avg position | Named first | ChatGPT | Perplexity | Gemini |
|---|---|---|---|---|---|---|---|---|
| 1 | Octopus Energy | 100% | - | 1.3 | 14 | 6/6 | 6/6 | 6/6 |
| 2 | 100Green | 72.2% | - | 3.2 | 0 | 4/6 | 4/6 | 5/6 |
| 3 | EDF Energy | 44.4% | - | 6.1 | 0 | 4/6 | 1/6 | 3/6 |
| 4 | Good Energy | 38.9% | - | 2.3 | 3 | 3/6 | 2/6 | 2/6 |
| 5 | E (Gas and Electricity) | 38.9% | - | 2.4 | 0 | 3/6 | 3/6 | 1/6 |
| 6 | Outfox Energy | 38.9% | - | 3.4 | 1 | 2/6 | 2/6 | 3/6 |
| 7 | E.ON Next | 38.9% | - | 3.9 | 0 | 1/6 | 2/6 | 4/6 |
| 8 | Ecotricity | 33.3% | - | 3.7 | 0 | 1/6 | 2/6 | 3/6 |
| 9 | British Gas | 33.3% | - | 6 | 0 | 2/6 | 0/6 | 4/6 |
| 10 | Sainsbury's Energy | 16.7% | - | 4 | 0 | 2/6 | 1/6 | 0/6 |
| 11 | Utility Warehouse | 16.7% | - | 4 | 0 | 0/6 | 0/6 | 3/6 |
| 12 | OVO Energy | 16.7% | - | 4.7 | 0 | 1/6 | 1/6 | 1/6 |
| 13 | ScottishPower | 16.7% | - | 7.3 | 0 | 0/6 | 0/6 | 3/6 |
| 14 | So Energy | 11.1% | - | 4.5 | 0 | 1/6 | 1/6 | 0/6 |
| 15 | Scottish Power | 11.1% | - | 7.5 | 0 | 2/6 | 0/6 | 0/6 |
| 16 | Outfox The Market | 5.6% | - | 2 | 0 | 0/6 | 1/6 | 0/6 |
| 17 | Tulo Energy | 5.6% | - | 3 | 0 | 0/6 | 1/6 | 0/6 |
Share is the percentage of the 18 answers that named the brand. Engine columns show how many of that engine's answers named it. Small moves between months are often noise.
Sites the answers cite most
How many answers cited each website as a source.
- which.co.uk15
- citizensadvice.org.uk8
- uswitch.com8
- clearscore.com7
- ethicalconsumer.org6
- ofgem.gov.uk5
- forbes.com5
- moneysavingexpert.com5
- energy.org.uk4
- expertreviews.co.uk4
- confused.com4
- energy-review.co.uk4
- moneysupermarket.com4
- goodenergy.co.uk4
- powerguardian.co.uk3
The questions
The same questions are asked every month, in every engine.
- Which energy supplier is best in the UK right now?
- Who are the cheapest reliable gas and electricity suppliers in the UK?
- Which UK energy company has the best customer service?
- What is the best green energy supplier in the UK?
- I'm moving house in the UK. Which energy supplier should I switch to?
- Which UK energy suppliers are best for homes with solar panels or an electric car?
How the index works, and the other industries we track.
In uk energy suppliers? See where you stand.
Axiom GEO tracks your own buyer questions across six AI engines as often as daily, compares you with the competitors you choose and shows which pages the engines cite.