Carbon accounting software: AI search visibility ranking (2026)
How AI search engines rank carbon accounting software by visibility and citations. 20 brands measured monthly across Google AI Mode: which brands the AI names in answers, which domains it cites as sources, and how the leaders compare. Carbon accounting software used to measure emissions, model reduction strategies, support climate disclosures, and manage decarbonization programs. Composite score: 70% visibility (% of AI answers naming the brand) + 30% citation rate (% citing the brand's domain). Full methodology →
Download this ranking as a PDF
We'll email it to you. One-off send — no list, no follow-up, no surprise marketing.
When it comes to Carbon accounting software, AI engines like ChatGPT and Google AI often point to Persefoni as a leader, highlighting its prominent presence with 62.5% citation. Greenly and Watershed also feature as top contenders, making them noteworthy for any potential buyer considering this space.
These rankings are informed by data pulled from frequently cited sources like seedling.earth, greenly.earth, and linkedin.com. These sites often aggregate expert reviews and user feedback, suggesting that user insights and expert validation heavily influence which software brands are recommended by AI.
For buyers, considering how AI engines emphasize recent reviews and third-party validations is crucial. This means evaluating Carbon accounting software through the lens of current user feedback and the topical authority of sources mentioned can guide more informed and confident decisions.
At a glance
What we observed in this category
Persefoni leads the carbon accounting software category with a composite score of 62.5, the only brand where visibility and citation are perfectly aligned at 62.5% each. The next closest competitor, Greenly, sits at a composite of 48.8, and Watershed at 43.8, meaning Persefoni holds a meaningful gap over the field. The category average visibility is just 11.9%, so any brand above 50% visibility is operating in a different tier entirely from most of the 20 brands tracked.
Watershed presents the sharpest divergence between visibility and citation in the dataset: it matches Persefoni on visibility at 62.5% but records a 0.0% citation rate, suggesting Google AI Mode names it frequently in responses but does not link out to its domain as a source. Greenly shows the inverse pattern, with citation at 75.0% against visibility of only 37.5%, meaning AI pulls its content as a reference source more often than it surfaces Greenly as a named brand recommendation. This named-versus-trusted split is a structural pattern across the top five.
Google AI Mode is the top engine for every brand in this dataset, indicating the category's AI visibility is concentrated in a single engine with no meaningful differentiation by platform. The top cited sources include third-party directories and ESG aggregators such as seedling.earth, keyesg.com, onestopesg.com, and crediblesg.com alongside brand domains like greenly.earth and persefoni.com. This signals that Google AI Mode is anchoring category responses heavily on comparison and listing sites rather than on vendor content alone.
Movers & shakers since last refresh
Biggest visibility risers
-
Watershed 12% → 62% · rank #3 → #3+50pp
-
Persefoni 25% → 62% · rank #2 → #1+38pp
-
Normative 12% → 50% · rank #4 → #4+38pp
Biggest visibility fallers
-
Workiva 12% → 0% · rank #6 → #9-12pp
The ranking
| # | Brand | Visibility | Citation | Top engine |
|---|---|---|---|---|
| 1 |
persefoni.com
|
62% | 62% | Google AI Mode |
Persefoni holds the top composite score of 62.5, with visibility and citation both at 62.5%, more than five times the category average visibility of 11.9%. |
||||
| 2 |
greenly.earth
|
38% | 75% | Google AI Mode |
Greenly's citation rate of 75.0% is the highest in the dataset, yet its visibility of 37.5% sits well below Persefoni, indicating AI trusts it as a source more than it recommends it by name. |
||||
| 3 |
watershed.com
|
62% | 0% | Google AI Mode |
Watershed ties Persefoni on visibility at 62.5% but records a 0.0% citation rate, the starkest visibility-to-citation gap among all ranked brands. |
||||
| 4 |
normative.io
|
50% | 25% | Google AI Mode |
Normative's composite of 42.5 is supported by a visibility delta of plus 37.5 points this period, making it one of the three biggest risers alongside Persefoni and Watershed. |
||||
| 5 |
plana.earth
|
25% | 12% | Google AI Mode |
Plan A's composite of 21.2 places it above the category average but its visibility of 25.0% and citation of 12.5% are both modest, leaving it clearly behind the top four brands. |
||||
| 6 |
arbor.eco
|
0% | 50% | Google AI Mode |
| 7 |
coolset.com
|
0% | 50% | Google AI Mode |
| 8 |
sweep.net
|
0% | 38% | Google AI Mode |
| 9 |
workiva.com
|
0% | 0% | Google AI Mode |
| 10 |
sinai.com
|
0% | 0% | Google AI Mode |
| 11 |
emitwise.com
|
0% | 0% | Google AI Mode |
| 12 |
salesforce.com
|
0% | 0% | Google AI Mode |
| 13 |
ibm.com
|
0% | 0% | Google AI Mode |
| 14 |
sphera.com
|
0% | 0% | Google AI Mode |
| 15 |
optera.io
|
0% | 0% | Google AI Mode |
| 16 |
microsoft.com
|
0% | 0% | Google AI Mode |
| 17 |
sap.com
|
0% | 0% | Google AI Mode |
| 18 |
greenprojecttechnologies.com
|
0% | 0% | Google AI Mode |
| 19 |
cloverly.com
|
0% | 0% | Google AI Mode |
| 20 |
sustain.life
|
0% | 0% | Google AI Mode |
Sources AI engines trust in this category
Across the 8 buyer-intent queries we ran on carbon accounting software, these are the domains Google AI Mode cited most often. If you're not on this list — or if your competitors are — that's a concrete PR / linkbuilding target.
How to read this ranking
Four things worth knowing before you act on the numbers above. These are the same definitions across every industry page — for category-specific observations, see the What we observed section above (where available) and the per-brand insights inline in the ranking.
Visibility = being named
A brand's visibility % is the share of AI answers that mention it by name in the response prose. This is who AI engines actively recommend to the buyer. More on visibility →
Citation rate = being trusted
Citation rate is the share of AI answers that include the brand's domain as a clickable source link. This is what the AI treats as authoritative evidence, different from being named. More on citation rate →
Top engine differs by brand
The "top engine" column shows which AI surface each brand performs best on. Big gaps between a brand's score across engines usually points to specific content or schema gaps. How AI engines pick sources →
Rankings move month to month
AI engines re-crawl and re-rank on shorter cycles than classical search. We re-audit every brand on this list at least every 30 days and refresh this page automatically. How AI search ranking works →
Get your own carbon accounting software brand audited
The brands above were curated from public market-leader lists. Want the same measurement against your own brand — including the queries you appear on, which competitors get named instead, and a prioritised fix list? Run a free preview.
Frequently asked about carbon accounting software AI visibility
Who leads AI visibility in carbon accounting software?
Persefoni leads with a composite score of 62.5 and matching visibility and citation rates of 62.5% each, putting it ahead of Greenly at 48.8 and Watershed at 43.8.
Which brand is most cited by Google AI Mode in this category even if it is not the most visible?
Greenly has the highest citation rate in the dataset at 75.0%, despite a visibility score of only 37.5%, meaning AI uses its content as a reference source more often than it names it as a top recommendation.
What sources does Google AI Mode anchor on most when answering carbon accounting software queries?
The top cited sources include third-party ESG aggregators and directories such as seedling.earth, keyesg.com, onestopesg.com, and crediblesg.com, alongside vendor domains greenly.earth and persefoni.com.
Which brand has the biggest gap between visibility and citation, and what does that suggest?
Watershed has a visibility of 62.5% but a citation rate of 0.0%, suggesting Google AI Mode mentions it by name in responses but does not link to its domain as an authoritative source.
How does category-average AI visibility compare to the top brands in this space?
The category average visibility is 11.9%, while the top three brands, Persefoni, Watershed, and Normative, all sit at 50% or above, showing a steep concentration of AI presence at the top.
Which brands have seen the largest recent visibility gains in this category?
Watershed gained plus 50 visibility points to reach 62.5%, while Persefoni and Normative each gained plus 37.5 points, making all three the biggest risers in the current audit period.