AEO for carbon accounting software: AI search visibility ranking
How AI search engines rank carbon accounting software by visibility and citations. 20 brands measured quarterly 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 →
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When buyers inquire about carbon accounting software, AI engines prominently mention Persefoni as the leading choice, with 37.5% visibility. Other notable mentions include Normative and Greenly, which follow closely behind Persefoni. The high visibility of Persefoni suggests a strong presence and recognition in AI-generated responses.
The rankings reflect the sources AI engines most frequently pull from, such as seedling.earth and knowesg.com. Many of these are aggregator or review sites, indicating a reliance on comprehensive, aggregated information. This means sources recognized for topical authority and broad user interactions heavily influence AI recommendations.
For buyers, understanding AI ranking dynamics is crucial. Considerations like recent reviews, third-party validations, and the software's specific topical authority can guide decision making. Brands that are consistently endorsed by top search engines align with extensive peer or expert endorsement, indicating strong reliability and feature excellence within the subcategory.
At a glance
What we observed in this category
Persefoni leads the carbon accounting software category with a composite score of 45.0, well ahead of Normative at 30.0 and Greenly and Watershed both at 26.2. The gap matters because Persefoni's citation rate of 62.5% is more than five times the category average of 5.0%, meaning Google AI Mode not only mentions the brand but actively treats its domain as a reference source. No other specialist carbon accounting brand comes close to that citation rate, which signals a structural AEO advantage that compounds over time.
A clear divergence exists between being named in AI responses and being cited as a trusted source. Greenly and Watershed each match Persefoni's visibility of 37.5% but carry zero citation share, so they appear in answers without their domains being pulled as evidence. Normative sits in between with 12.5% citation share. SAP Sustainability Control Tower shows the reverse pattern: 0% visibility but 25.0% citation share, meaning the AI references sap.com as a source while not prominently featuring the product by name in category responses.
Google AI Mode is the dominant engine across all ranked brands in this dataset, with every top-10 brand listing it as their top engine. The cited sources Google AI Mode anchors on are predominantly third-party aggregators and community platforms: seedling.earth, knowesg.com, emissiontwin.com, onestopesg.com, linkedin.com, and reddit.com all appear in the top cited sources list. Only one brand domain, persefoni.com, features directly in that cited sources list, reinforcing why Persefoni's citation rate separates it from every other specialist competitor.
Movers & shakers since last refresh
Biggest visibility fallers
-
Persefoni 62% → 38% · rank #1 → #1-25pp
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Watershed 62% → 38% · rank #3 → #4-25pp
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Plan A 25% → 0% · rank #5 → #6-25pp
The AEO ranking
| # | Brand | Visibility | Citation | Top engine |
|---|---|---|---|---|
| 1 |
persefoni.com
|
38% | 62% | Google AI Mode |
Persefoni's citation rate of 62.5% is twelve times the category average of 5.0% and its domain appears directly in Google AI Mode's cited sources list, no other specialist rival achieves this. |
||||
| 2 |
normative.io
|
38% | 12% | Google AI Mode |
Normative matches the top-tier visibility of 37.5% but its citation rate of 12.5% sits well below Persefoni's 62.5%, indicating it is named in answers but rarely used as a reference source. |
||||
| 3 |
greenly.earth
|
38% | 0% | Google AI Mode |
Greenly holds 37.5% visibility equal to Persefoni and Normative but records zero citation share, meaning Google AI Mode mentions it without drawing on greenly.earth as supporting evidence. |
||||
| 4 |
watershed.com
|
38% | 0% | Google AI Mode |
Watershed shares the 37.5% visibility figure but has zero citations and suffered a 25-point visibility drop from the prior period, the joint largest decline recorded in this audit dataset. |
||||
| 5 |
sap.com
|
0% | 25% | Google AI Mode |
SAP Sustainability Control Tower is an outlier with 0% visibility but 25.0% citation share, suggesting sap.com is used as a reference source without the product being featured prominently in category answers. |
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| 6 |
plana.earth
|
0% | 0% | Google AI Mode |
| 7 |
microsoft.com
|
0% | 0% | Google AI Mode |
| 8 |
greenprojecttechnologies.com
|
0% | 0% | Google AI Mode |
| 9 |
cloverly.com
|
0% | 0% | Google AI Mode |
| 10 |
sustain.life
|
0% | 0% | Google AI Mode |
| 11 |
arbor.eco
|
0% | 0% | Google AI Mode |
| 12 |
coolset.com
|
0% | 0% | Google AI Mode |
| 13 |
workiva.com
|
0% | 0% | Google AI Mode |
| 14 |
sinai.com
|
0% | 0% | Google AI Mode |
| 15 |
emitwise.com
|
0% | 0% | Google AI Mode |
| 16 |
salesforce.com
|
0% | 0% | Google AI Mode |
| 17 |
ibm.com
|
0% | 0% | Google AI Mode |
| 18 |
sphera.com
|
0% | 0% | Google AI Mode |
| 19 |
optera.io
|
0% | 0% | Google AI Mode |
| 20 |
sweep.net
|
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 AEO 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 →
AEO 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 90 days and refresh this page automatically. How AI search ranking works →
Run an AEO audit on your own carbon accounting software brand
The brands above were curated from public market-leader lists. Want the same answer engine optimisation 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 AEO for carbon accounting software
Who leads AEO in carbon accounting software?
Persefoni leads with a composite score of 45.0, a visibility rate of 37.5%, and a citation rate of 62.5%, the only specialist brand in this category whose domain appears in Google AI Mode's cited sources list.
What sources does Google AI Mode cite most for carbon accounting software research?
The top cited sources are third-party aggregators and community platforms including seedling.earth, knowesg.com, emissiontwin.com, onestopesg.com, linkedin.com, and reddit.com, with persefoni.com the only brand domain in that group.
Can a brand have high visibility in AI answers but still perform poorly on AEO?
Yes: Greenly and Watershed both achieve 37.5% visibility equal to Persefoni but record zero citation share, meaning Google AI Mode names them without treating their domains as trusted reference sources.
Which brands are losing ground in carbon accounting software AEO?
Persefoni, Watershed, and Plan A are all recorded as visibility fallers, each dropping 25 percentage points from the prior period, with Plan A also losing 12.5 points of citation share.
How does SAP Sustainability Control Tower perform in AI answer visibility despite being a major vendor?
SAP Sustainability Control Tower records 0% visibility in AI category answers but 25.0% citation share, suggesting its domain carries reference authority even though the product is not being surfaced by name.
How concentrated is AEO performance across brands in carbon accounting software?
Performance is highly concentrated: the category average visibility is just 7.5% and average citation share is 5.0%, while six of the top 10 ranked brands score zero on both visibility and citation.