Sustainability consulting firms: AI search visibility ranking (2026)
How AI search engines rank sustainability consulting firms 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. Sustainability consulting firms helping businesses with ESG strategy, carbon reduction, reporting, supply chain programs, and environmental transition planning. 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 ask AI engines like ChatGPT, Claude, Perplexity, and Gemini to recommend sustainability consulting firms, EY surfaces in answers 87.5% of the time, making it the clear frontrunner in AI-generated recommendations. ERM and WSP round out the top three, appearing consistently across multiple AI platforms. If you are comparing firms and want to know which names carry the most weight in AI-assisted research, these three dominate.
The rankings reflect which sources AI engines trust most when forming answers. The top cited domains include onestopesg.com, sustainabilitymag.com, and reddit.com alongside erm.com and ecolytics.io. Several of these are aggregator and trade publication sites, meaning AI engines are pulling firm recommendations from editorial roundups and community discussions rather than the firms' own marketing. A firm that appears consistently across those third-party sources earns higher AI visibility regardless of its own website quality.
For a buyer using this page, the most concrete thing to check is whether a firm you are considering has recent third-party coverage on sites like these, not just a polished website. AI engines weight external validation and topical authority heavily, so a firm with strong presence in sustainability-specific publications and honest community reviews will rank higher than one relying on self-promotion. If a firm appears lower on this list, search for its coverage in those cited domains before ruling it out.
At a glance
What we observed in this categoryauto-generated
EY dominates this category with a visibility score of 87.5%, more than double the next brand ERM at 37.5%, and ten times the 8.8% category average. This gap is not marginal, it is structural. Every other brand in the top five sits at 12.5% visibility or below. The concentration of AI presence in a single brand means buyers researching sustainability consulting via Google AI Mode are receiving a heavily EY-weighted picture of the market.
The most striking divergence between visibility and citation is EY itself. Despite an 87.5% visibility score, EY carries a 0.0% citation rate, meaning AI describes EY frequently but never links out to ey.com as a source. ERM behaves oppositely, with 37.5% visibility and a 25.0% citation rate, making it the only brand that is both named and trusted as a reference. BSR and KPMG appear only as cited sources despite zero visibility, suggesting AI uses their content without naming them as recommended firms.
The top cited sources for this category are dominated by third-party aggregators and trade publications: onestopesg.com, sustainabilitymag.com, reddit.com, and earthly.org all feature alongside erm.com. This suggests Google AI Mode is anchoring its sustainability consulting responses primarily on directory and editorial content rather than firm websites directly. The presence of reddit.com in the citation list points to community-sourced content playing a meaningful role in how AI constructs answers in this category.
Movers & shakers since last refresh
Biggest visibility risers
-
EY 0% → 88% · rank #0 → #1+88pp
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ERM 0% → 38% · rank #0 → #2+38pp
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WSP 0% → 12% · rank #0 → #3+12pp
The ranking
| # | Brand | Visibility | Citation | Top engine |
|---|---|---|---|---|
| 1 |
ey.com
|
88% | 0% | Google AI Mode |
EY leads with 87.5% visibility, nearly ten times the 8.8% category average, but its 0.0% citation rate means AI mentions it without linking to ey.com. |
||||
| 2 |
erm.com
|
38% | 25% | Google AI Mode |
ERM is the only top-five brand earning both meaningful visibility (37.5%) and citations (25.0%), making it the most balanced performer across both AI metrics. |
||||
| 3 |
wsp.com
|
12% | 12% | Google AI Mode |
WSP sits at 12.5% on both visibility and citation, matching the category average exactly and showing no differentiation in how AI treats its brand versus peers. |
||||
| 4 |
anthesisgroup.com
|
12% | 0% | Google AI Mode |
Anthesis holds 12.5% visibility with 0.0% citation, identical in composite score (8.8) to Deloitte and Accenture, suggesting no AI advantage over larger rivals. |
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| 5 |
deloitte.com
|
12% | 0% | Google AI Mode |
Deloitte ranks fifth with 12.5% visibility and 0.0% citation, a composite score of 8.8, underperforming relative to its global brand scale in this specific category. |
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| 6 |
accenture.com
|
12% | 0% | Google AI Mode |
| 7 |
bsr.org
|
0% | 12% | Google AI Mode |
| 8 |
kpmg.com
|
0% | 12% | Google AI Mode |
| 9 |
engieimpact.com
|
0% | 12% | Google AI Mode |
| 10 |
aecom.com
|
0% | 0% | Google AI Mode |
| 11 |
arup.com
|
0% | 0% | Google AI Mode |
| 12 |
ramboll.com
|
0% | 0% | Google AI Mode |
| 13 |
stantec.com
|
0% | 0% | Google AI Mode |
| 14 |
tetratech.com
|
0% | 0% | Google AI Mode |
| 15 |
jacobs.com
|
0% | 0% | Google AI Mode |
| 16 |
slrconsulting.com
|
0% | 0% | Google AI Mode |
| 17 |
eco-act.com
|
0% | 0% | Google AI Mode |
| 18 |
southpole.com
|
0% | 0% | Google AI Mode |
| 19 |
pwc.com
|
0% | 0% | Google AI Mode |
| 20 |
capgemini.com
|
0% | 0% | Google AI Mode |
Sources AI engines trust in this category
Across the 8 buyer-intent queries we ran on sustainability consulting firms, 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 sustainability consulting firms 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 sustainability consulting firms AI visibility
Who leads AI visibility in sustainability consulting?
EY leads with 87.5% visibility, far ahead of second-placed ERM at 37.5%. The category average is just 8.8%, which makes EY's dominance particularly pronounced.
Which sustainability consulting brand is most cited by Google AI Mode?
ERM has the highest citation rate at 25.0%, and is also the only brand among the top five to appear as both a named firm and a cited source simultaneously.
What sources does Google AI Mode cite most for sustainability consulting research?
The top cited sources include onestopesg.com, sustainabilitymag.com, erm.com, reddit.com, and earthly.org, with third-party directories and trade publications dominating over firm websites.
Can a brand have high visibility but zero citations in this category?
Yes. EY has 87.5% visibility but a 0.0% citation rate, meaning Google AI Mode references EY by name without linking to ey.com as a source. Anthesis and Deloitte show the same pattern.
How do large generalist firms like Deloitte and Accenture perform compared to specialists?
Deloitte and Accenture both score 12.5% visibility and 0.0% citation, giving them composite scores of 8.8, identical to specialist firm Anthesis and well below specialist ERM.
Are there brands that appear in citations but not in AI visibility for sustainability consulting?
Yes. BSR, KPMG, and ENGIE Impact each carry a 12.5% citation rate but 0.0% visibility, meaning AI uses their content as reference material without naming them as recommended firms.