--- title: "100Green vs British Gas: Which is searched more in the United Kingdom?" description: "Is 100Green or British Gas more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Energy suppliers set in the United Kingdom. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time." canonical: "https://gobrandwave.com/demand/uk/compare/100green-vs-british-gas" publisher: "Brandwave" --- # 100Green vs British Gas: Which is searched more in the United Kingdom? Is 100Green or British Gas more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Energy suppliers set in the United Kingdom. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time. ## Key facts - **Compared**: 100Green and British Gas - **Competitive set**: Energy suppliers - **Market**: United Kingdom - **Month measured**: Sep 2026 - **100Green Share of Search**: 0.15% - **British Gas Share of Search**: 27.5% ## Is 100Green or British Gas more popular in search? - In September 2026, British Gas had more branded searches than 100Green among energy suppliers in the United Kingdom. British Gas had about 1 million branded searches, while 100Green had 5,400. British Gas made up 27.5% of all energy supplier searches we track, and 100Green accounted for 0.15%. - British Gas was ahead of 100Green in every measured month of the 12 months ending September 2026. - Across the 12 months ending September 2026, 100Green’s share of searches among energy suppliers in the United Kingdom moved from 0.11% to 0.15%, and its estimated monthly branded searches moved from 4.4K to 5.4K. - Across the 12 months ending September 2026, British Gas’ share of searches among energy suppliers in the United Kingdom moved from 30.7% to 27.5%, and its estimated monthly branded searches moved from 1.2M to 1M. ## Top energy suppliers in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, 100Green and British Gas were each mentioned in two out of five: in one of the three ChatGPT answers and in one of the two Google AI Overviews. 100Green and British Gas were each listed first in two of the four answers that named either. Brands get a higher AI rank if they are mentioned earlier in the answers that list options. | Brand | AI rank | ChatGPT answers that named it | Google AI Overviews that named it | All answers that named it | | --- | --- | --- | --- | --- | | Octopus Energy | 1st | 3 of 3 | 2 of 2 | 5 of 5 | | E.ON Next | 2nd | 3 of 3 | 2 of 2 | 5 of 5 | | Outfox Energy | 3rd | 2 of 3 | 2 of 2 | 4 of 5 | | British Gas | 4th | 1 of 3 | 1 of 2 | 2 of 5 | | 100Green | 5th | 1 of 3 | 1 of 2 | 2 of 5 | | EDF | 6th | 1 of 3 | 1 of 2 | 2 of 5 | | ScottishPower | 7th | 1 of 3 | 1 of 2 | 2 of 5 | | OVO | 8th | 1 of 3 | 0 of 2 | 1 of 5 | | Ecotricity | 9th | 0 of 3 | 1 of 2 | 1 of 5 | | Good Energy | 10th | 0 of 3 | 1 of 2 | 1 of 5 | | So Energy | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about energy suppliers - Asked ChatGPT "Which energy supplier should I switch to in the UK?": 1. E.ON Next, 2. Octopus Energy, 3. Outfox Energy, 4. British Gas, 5. OVO, 6. EDF, 7. ScottishPower - Asked ChatGPT "What are the best energy suppliers in the UK?": 1. Octopus Energy, 2. Outfox Energy, 3. 100Green, 4. E.ON Next - Asked ChatGPT "What's the cheapest good energy supplier in the UK for a family home?": 1. E.ON Next, 2. Octopus Energy - Searched Google, AI Overview "energy suppliers": 1. British Gas, 2. Octopus Energy, 3. EDF, 4. E.ON Next, 5. ScottishPower, 6. Ecotricity, 7. Good Energy, 8. Outfox Energy - Searched Google, AI Overview "best energy supplier": 1. Octopus Energy, 2. 100Green, 3. Outfox Energy, 4. E.ON Next Not named in any answer: So Energy. Brands are listed in the order each answer named them. The answers were collected in United Kingdom on October 22, 2026. ## How did search popularity change for United Kingdom energy suppliers in September 2026? - In September 2026, Octopus Energy overtook British Gas to become the leader among energy suppliers in the United Kingdom, with 33.6% of the searches. - In September 2026, British Gas lost share of searches among energy suppliers in the United Kingdom, from 30.7% to 27.5%. - Estimated monthly branded searches for 100Green in the United Kingdom rose 22.7% over 12 measured months, from 4.4K to 5.4K in September 2026. ## Month by month | Month | 100Green estimated searches | 100Green Share of Search | 100Green rank | British Gas estimated searches | British Gas Share of Search | British Gas rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 4.4K | 0.11% | 11 | 1.2M | 30.7% | 1 | | Nov 2025 | 4.4K | 0.11% | 11 | 1.2M | 31.1% | 1 | | Dec 2025 | 3.6K | 0.11% | 11 | 1M | 29.8% | 1 | | Jan 2026 | 5.4K | 0.13% | 11 | 1.2M | 30% | 1 | | Feb 2026 | 3.6K | 0.11% | 11 | 1M | 29.9% | 1 | | Mar 2026 | 4.4K | 0.11% | 11 | 1.2M | 31.1% | 1 | | Apr 2026 | 3.6K | 0.1% | 11 | 1M | 28.7% | 2 | | May 2026 | 2.9K | 0.09% | 11 | 1M | 30.5% | 1 | | Jun 2026 | 5.4K | 0.16% | 11 | 1M | 30.5% | 1 | | Jul 2026 | 5.4K | 0.17% | 11 | 1M | 30.9% | 1 | | Aug 2026 | 5.4K | 0.17% | 11 | 1M | 30.7% | 1 | | Sep 2026 | 5.4K | 0.15% | 11 | 1M | 27.5% | 2 | ## How each brand is measured Brandwave collects information about searches that people make online using 100Green’s and British Gas’ names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading. - **100Green**: Measured on the search term “100green”. - **British Gas**: Measured on the search term “british gas”. - [100Green profile](/demand/uk/brands/100green) - [British Gas profile](/demand/uk/brands/british-gas) - [All energy suppliers in the United Kingdom](/demand/uk/categories/uk-energy-suppliers): The set both shares are measured inside, 11 brands. ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Frequently asked questions ### Is 100Green or British Gas more popular in search? In September 2026, British Gas had more branded searches than 100Green among energy suppliers in the United Kingdom. British Gas had about 1 million branded searches, while 100Green had 5,400. British Gas made up 27.5% of all energy supplier searches we track, and 100Green accounted for 0.15%. ## Cite this page Brandwave. "100Green vs British Gas: Which is searched more in the United Kingdom?". https://gobrandwave.com/demand/uk/compare/100green-vs-british-gas This page is also available as HTML at https://gobrandwave.com/demand/uk/compare/100green-vs-british-gas. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.