Energy suppliers in Switzerland that AI assistants recommend
We asked ChatGPT, Claude and Gemini the four questions a buyer asks when looking for energy suppliers in Switzerland, three times each (Claude once), in German, and counted who they named. These are the businesses named in two or more of the 28 answers.
Names are printed as the assistants wrote them. We have not checked that any of them is good, open, or real.
- Answers
- 28
- Businesses named
- 16
- Named only once
- 3
- Named by 2+ assistants
- 7 of 13
- Named again on a rerun
- 63%
Edition October 2026. Download the data
Asked for energy suppliers in Switzerland, ChatGPT, Claude and Gemini most often named ewz (75% of answers), IWB (61%) and BKW (54%). Across 28 answers they named 16 different businesses, 3 of them only once. Each of four buyer questions was asked three times (Claude once), in German, in October 2026.
The ranking
The AI Recommendation Rate is the fraction of the 28 answers that named a business. The range under it is a 95% confidence interval: where two ranges overlap, the gap between those businesses could be chance.
| # | Business | AI Recommendation Rate | ChatGPT | Claude | Gemini | Questions | Avg. position | With search |
|---|---|---|---|---|---|---|---|---|
| 1 | ewzAlso written EWZ, Elektrizitätswerk der Stadt ZürichIs this your business? | 95%: 57 to 87% | 75% | 25% | 92% | 4 of 4 | 1.2 | 0% |
| 2 | IWBAlso written Industrielle Werke BaselIs this your business? | 95%: 42 to 76% | 58% | 25% | 75% | 4 of 4 | 3.4 | 0% |
| 3 | BKWAlso written BKW Energie AG, BKW EnergieIs this your business? | 95%: 36 to 71% | 25% | 25% | 92% | 4 of 4 | 2.5 | 0% |
| 4 | AlpiqIs this your business? | 95%: 21 to 54% | 0% | 0% | 83% | 4 of 4 | 3.8 | 0% |
| 5 | EKZAlso written Elektrizitätswerke des Kantons ZürichIs this your business? | 95%: 10 to 40% | 33% | 25% | 8% | 4 of 4 | 2.3 | 0% |
| 6 | AxpoIs this your business? | 95%: 8 to 36% | 0% | 0% | 42% | 3 of 4 | 4.2 | 0% |
| 7 | CKWIs this your business? | 95%: 6 to 32% | 0% | 0% | 33% | 2 of 4 | 3.3 | 0% |
| 8 | Energie 360°Is this your business? | 95%: 6 to 32% | 0% | 0% | 33% | 2 of 4 | 5.5 | 0% |
| 9 | WWZIs this your business? | 95%: 4 to 27% | 0% | 0% | 25% | 1 of 4 | 2 | 0% |
| 10 | Energie Wasser BernIs this your business? | 95%: 4 to 27% | 8% | 0% | 17% | 2 of 4 | 3.3 | 0% |
| 11 | SIGIs this your business? | 95%: 2 to 23% | 17% | 0% | 0% | 2 of 4 | 3 | 0% |
| 12 | Groupe EIs this your business? | 95%: 2 to 23% | 8% | 25% | 0% | 2 of 4 | 4 | 0% |
| 13 | St. Galler StadtwerkeAlso written St.Galler StadtwerkeIs this your business? | 95%: 2 to 23% | 0% | 25% | 8% | 2 of 4 | 5 | 0% |
Each assistant column is the share of that assistant's own answers. Questions counts how many of the four produced the name at least once; position is where it came in the answer's list, 1 being first. 3 more names came up in a single answer and are counted above but not listed.
Is this your business?
Named on this list? Get the badge for your website and a free scan of who AI assistants recommend to your customers. Use the badge only for a business named here. It records this edition, without verifying ownership or promising future mentions.
What each assistant said
The same questions, the same number of times, and often different names. Each column is one assistant's top five from the ranking above, with the share of its own answers that named them.
| # | ChatGPT | Claude | Gemini |
|---|---|---|---|
| 1 | ewz75% | ewz25% | ewz92% |
| 2 | IWB58% | IWB25% | BKW92% |
| 3 | EKZ33% | BKW25% | Alpiq83% |
| 4 | BKW25% | EKZ25% | IWB75% |
| 5 | SIG17% | Groupe E25% | Axpo42% |
ChatGPT named no business in 2 of its 12 answers. Claude named no business in 3 of its 4 answers.
Named here? Put it on your site
Every business in the ranking was named in two or more answers. The badge says that and nothing more: no position, because the ranges above do not support one. It links back to this page, so anyone can check.
<a href="https://aigrow.gg/index/energy-suppliers/switzerland"><img src="https://aigrow.gg/badges/index/2026-10/energy-suppliers/switzerland.svg" width="312" height="100" alt="Named by AI assistants: Energy suppliers in Switzerland, AIGROW AI Visibility Index, October 2026"></a>The questions
Asked word for word, three times each (Claude once), to every assistant, in German. The English under each is our translation. The prompt is the one the free scan uses. No web search, no location and no chat history, so every answer starts from the same place.
- 1Welcher Stromanbieter ist in der Schweiz am besten?What is the best electricity provider in Switzerland?
- 2Ich ziehe in der Schweiz um. Welchen Anbieter für Strom und Gas soll ich wählen?I'm moving home in Switzerland. Which electricity and gas provider should I choose?
- 3Welcher Energieanbieter in der Schweiz hat die günstigsten Tarife?Which energy company in Switzerland has the cheapest rates?
- 4Welcher Energieanbieter in der Schweiz hat den besten Ökostromtarif?Which energy provider in Switzerland has the best green electricity plan?
On this page the same questions were also asked with web search on, 2 answers. 0% of the businesses named with search were also named without it; the With search column above is each business's share of those answers.
How to read this page
- What it measures
- Which names these models produce when asked cold, from what they learned in training. It is not a review, a rating or our recommendation, and a business missing here may simply be one the models were never shown.
- Why the ranges matter
- 28 answers is a sample. Asked again next month, most shares will move by a few points; the ranges say how far they could move by chance alone.
- One business, several spellings
- Branches, legal suffixes and spellings of one business are merged, and the other spellings are printed under its name. Names that might be two businesses are kept apart.
- A name is wrong
- If a business here is closed, misnamed or yours and you want it removed, tell us. We correct or remove it when the page is next published.
AI Visibility Index
Elsewhere in the Index
Is your business on this list?
The free scan asks the same assistants the questions your customers ask, scores whether they name you, and lists who they name instead.
Edition October 2026 · published by Guglielmo Paesano, founder of AIGROW · data under CC BY 4.0