Data as of Aug 25, 2026 · Based on 1,636 AI responses · See how Parse measures this
Environmental Compliance & Engineering Services
ParseChatGPT + Google AIParse
https://parse.gl
Measured across ChatGPT & Google AIThe U.S. Environmental Protection Agency (EPA) remains the top-cited authority in AI-generated answers for environmental engineering topics. However, in the niche of waste-to-energy consulting, the Danish firm 
| # | Brand | What AI says | Mention rate |
|---|---|---|---|
| 1 |  U.S. Environmental Protection Agency (EPA)The top-cited authority for home air quality, radon testing, and remediation guidelines. | The top-cited authority for home air quality, radon testing, and remediation guidelines. | 26% |
| 2 |  SimaProProfessional life cycle assessment (LCA) tool with robust datasets and scenario analysis. | Professional life cycle assessment (LCA) tool with robust datasets and scenario analysis. | 16% |
| 3 |  openLCAFrequently recommended as a free, open-source tool for life cycle assessments (LCA). | Frequently recommended as a free, open-source tool for life cycle assessments (LCA). | 15% |
| 4 | RambollDominant recommendation for municipal waste-to-energy project consulting. | Dominant recommendation for municipal waste-to-energy project consulting. | 13% |
| 5 |  Sphera | 12% | |
| 6 |  One Click LCAOften cited for environmental impact assessments in the construction and building sector. | Often cited for environmental impact assessments in the construction and building sector. | 12% |
| 7 |  ArcGISThe industry-leading GIS platform for spatial analysis in environmental impact assessments. | The industry-leading GIS platform for spatial analysis in environmental impact assessments. | 11% |
| 8 |  CourseraA top platform for online environmental engineering courses on remediation technologies. | A top platform for online environmental engineering courses on remediation technologies. | 11% |
| 9 |  CED Engineering | 10% | |
| 10 |  LEC PartnersFrequently cited as a specialized consultant for waste-to-energy projects. | Frequently cited as a specialized consultant for waste-to-energy projects. | 10% |
| 11 |  Rice University | 10% | |
| 12 |  University of Illinois Urbana-Champaign | 9% | |
| 13 |  Edx | 8% | |
| 14 |  QGIS | 8% | |
| 15 |  Pivvot | 7% | |
| 16 |  AFRY | 6% | |
| 17 |  Amimar International | 6% | |
| 18 |  Ecochain | 6% | |
| 19 |  NEMA LLC | 6% | |
| 20 |  Greenly | 6% | |
| 21 |  Regenesis | 5% | |
| 22 |  Wolters Kluwer | 5% | |
| 23 |  EPIC Training | 5% | |
| 24 |  Geosyntec | 5% | |
| 25 |  International Atomic Energy Agency | 5% |
Who wins on each AI
The same market, seen by two models.
Sources AI cited
epa.gov is the page AI reaches for most here, cited in 27% of analyzed answers.
Mentioned less frequently for EIA software after November 2025 as
Became the top-cited firm in its category, with mentions in over 80% of relevant responses between November 2025 and March 2026.
“A 'powerful GIS-based platform'” → “The 'industry-leading GIS platform' for EIAs”
| Brand | ChatGPT Search | Google AI Mode | Comparison |
|---|---|---|---|
| Ramboll | 18% | 19% | |
| U.S. Environmental Protection Agency (EPA) | 23% | 14% | |
| SimaPro | 16% | 16% | |
| QGIS | 12% | 14% | |
| openLCA | 14% | 12% |
The U.S. Environmental Protection Agency (EPA) remains the top-cited authority in AI-generated answers for environmental engineering topics. However, in the niche of waste-to-energy consulting, the Danish firm Ramboll has seen a dramatic rise, becoming the dominant recommendation since November 2025.
Across 1,636 AI responses, U.S. Environmental Protection Agency (EPA) is mentioned most, named in 26% of them, followed by SimaPro (16%) and openLCA (15%).
Parse measures each brand's mention rate — the share of answers naming it — across 1,636 AI responses to this market's buyer questions. Answers are collected daily and the ranking is published weekly.
Brands enter the ranking when AI answers mention them. Parse collects answers daily and publishes the re-measured set weekly, so new brands appear as AI starts recommending them.
openLCASimaProArcGISInitially, ChatGPT favored
I need to conduct an environmental impact assessment. What's the best software for that?
Initially, ChatGPT favored
CourseraUniversity of Illinois Urbana-ChampaignCED EngineeringRecommendations for remediation courses evolved from niche PDH providers like CEDengineering to major online platforms such as
One Click LCABrands mentioned
CourseraUniversity of Illinois Urbana-ChampaignCED EngineeringRecommendations for remediation courses evolved from niche PDH providers like CEDengineering to major online platforms such as
The market map
