AI Visibility Index · October 2026

Energy suppliers in Germany that AI assistants recommend

We asked ChatGPT, Claude and Gemini the four questions a buyer asks when looking for energy suppliers in Germany, 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.

Energy suppliers · Germany
64%of answers named Naturstrom
Answers
28
Businesses named
19
Named only once
3
Named by 2+ assistants
12 of 16
Named again on a rerun
76%

Edition October 2026. Download the data

Asked for energy suppliers in Germany, ChatGPT, Claude and Gemini most often named Naturstrom (64% of answers), LichtBlick (54%) and E.ON (39%). Across 28 answers they named 19 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.

Energy suppliers in Germany named by AI assistants, October 2026
#BusinessAI Recommendation RateChatGPTClaudeGeminiQuestionsAvg. positionWith search
1NaturstromAlso written Naturstrom AG, naturstrom, naturstrom AGIs this your business?64%95%: 46 to 79%58%50%75%3 of 42.350%
2LichtBlickAlso written LichtBlick SE, LichtblickIs this your business?54%95%: 36 to 71%33%50%75%4 of 43.650%
3E.ONIs this your business?39%95%: 24 to 58%25%50%50%3 of 43.750%
4EWS SchönauAlso written Elektrizitätswerke Schönau, Elektrizitätswerke Schönau eG, EWS SchoenauIs this your business?36%95%: 21 to 54%17%50%50%2 of 42.30%
5TibberIs this your business?36%95%: 21 to 54%25%25%50%3 of 42.60%
6Green Planet EnergyAlso written Green Planet Energy eGIs this your business?36%95%: 21 to 54%25%25%50%2 of 43.250%
7EnBWIs this your business?36%95%: 21 to 54%17%50%50%3 of 44.60%
8EprimoAlso written eprimoIs this your business?32%95%: 18 to 51%25%0%50%2 of 41.70%
9Octopus EnergyAlso written Octopus Energy GermanyIs this your business?29%95%: 15 to 47%67%0%0%3 of 41.4100%
10VattenfallIs this your business?29%95%: 15 to 47%0%50%50%3 of 43.450%
11Polarstern EnergieIs this your business?21%95%: 10 to 40%0%50%33%2 of 44.50%
12Bürgerwerke eGIs this your business?11%95%: 4 to 27%8%0%17%1 of 43.30%
13Stadtwerke MünchenIs this your business?11%95%: 4 to 27%0%0%25%3 of 46.30%
14MAINGAU EnergieIs this your business?7%95%: 2 to 23%17%0%0%1 of 42.50%
15YelloAlso written Yello StromIs this your business?7%95%: 2 to 23%0%50%0%2 of 4450%
16StadtwerkeIs this your business?7%95%: 2 to 23%0%25%8%1 of 460%

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.

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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.

#ChatGPTClaudeGemini
1Octopus Energy67%Naturstrom50%Naturstrom75%
2Naturstrom58%LichtBlick50%LichtBlick75%
3LichtBlick33%E.ON50%E.ON50%
4E.ON25%EWS Schönau50%EWS Schönau50%
5Tibber25%EnBW50%Tibber50%

Claude named no business in 1 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.

Named by AI assistants: Energy suppliers in Germany, AIGROW AI Visibility Index, October 2026
<a href="https://aigrow.gg/index/energy-suppliers/germany"><img src="https://aigrow.gg/badges/index/2026-10/energy-suppliers/germany.svg" width="312" height="100" alt="Named by AI assistants: Energy suppliers in Germany, 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.

  1. 1Welcher Stromanbieter ist in Deutschland am besten?What is the best electricity provider in Germany?
  2. 2Ich ziehe in Deutschland um. Welchen Anbieter für Strom und Gas soll ich wählen?I'm moving home in Germany. Which electricity and gas provider should I choose?
  3. 3Welcher Energieanbieter in Deutschland hat die günstigsten Tarife?Which energy company in Germany has the cheapest rates?
  4. 4Welcher Energieanbieter in Deutschland hat den besten Ökostromtarif?Which energy provider in Germany has the best green electricity plan?

On this page the same questions were also asked with web search on, 2 answers. 70% 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

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Edition October 2026 · published by Guglielmo Paesano, founder of AIGROW · data under CC BY 4.0