Persefoni vs Plan A:Which is more popular by branded search?
In August 2026, Plan A had more branded searches than Persefoni among carbon accounting platforms worldwide. Plan A was estimated to have 33.1K branded searches compared to Persefoni’s 5.4K, and held a 32.6% Share of Search versus Persefoni’s 5.3%. These are worldwide searches for English-language branded terms.
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Which is more popular in search, Persefoni or Plan A?
Compare the platforms businesses measure emissions with. 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.
Share of Search by month for Plan A, Persefoni. The figures are in the table below the chart.
View monthly share of search table
| Month | Normative | Plan A | Greenly | Persefoni | Watershed |
|---|---|---|---|---|---|
| Oct 2025 | 42.4% | 28.4% | 23.2% | 5.7% | 0.33% |
| Nov 2025 | 45.2% | 24.8% | 24.8% | 4.9% | 0.29% |
| Dec 2025 | 42.4% | 28.4% | 23.3% | 5.7% | 0.27% |
| Jan 2026 | 55.2% | 24.7% | 16.5% | 3.3% | 0.24% |
| Feb 2026 | 42.9% | 28.7% | 23.5% | 4.7% | 0.28% |
| Mar 2026 | 37.6% | 37.6% | 20.6% | 4.1% | 0.24% |
| Apr 2026 | 42.9% | 28.7% | 23.5% | 4.7% | 0.28% |
| May 2026 | 38.1% | 31.1% | 25.5% | 5.1% | 0.3% |
| Jun 2026 | 35.6% | 29.1% | 29.1% | 5.8% | 0.34% |
| Jul 2026 | 33% | 33% | 27% | 6.6% | 0.47% |
| Aug 2026 | 39.9% | 32.6% | 21.9% | 5.3% | 0.32% |
| Sep 2026 | — | — | — | — | — |
How has the Persefoni and Plan A comparison changed over the last 12 months?
3 findings
- Plan A was ahead of Persefoni in every measured month of the 11 months ending August 2026.
- Across the 11 months ending August 2026, Persefoni’s estimated Share of Search among carbon accounting platforms worldwide moved from 5.7% to 5.3%, and its estimated monthly branded searches moved from 6.6K to 5.4K.
- Across the 11 months ending August 2026, Plan A’s estimated Share of Search among carbon accounting platforms worldwide moved from 28.4% to 32.6%, and its estimated monthly branded searches held steady at 33.1K.
How did search popularity change for carbon accounting platforms worldwide in August 2026?
1 change
In August 2026, Persefoni lost estimated Share of Search among carbon accounting platforms worldwide, from 6.6% to 5.3%.
How each brand is measured
Brandwave collects information about searches that people make online using Persefoni’s and Plan A’s 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.
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