Company lists · Data refreshed September 2026

Top 25 Environmental sustainability consulting firms based in Denver, United States

Name: Environmental sustainability consulting firms based in Denver, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 81 companies tracked

RevenueBase identified 81 company matches for environmental sustainability consulting firms associated with Denver, United States as of September 2026 and tracks 560 professional contacts across them, including 315 with verified work emails. Across the United States, New York is the largest hub for this category (237 companies); Denver has 81.

This list covers company matches for environmental sustainability consulting firms associated with Denver, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built

81Companies

560Contacts tracked

315Verified emails

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The 25 largest environmental sustainability consulting firms based in Denver, United States

Ranked by team size

Top 25 of 81 company matches for environmental sustainability consulting firms based in Denver, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Group14 Engineering, PBC	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	11-50	75 contacts →
	Exact match “Group14 Engineering is a Denver-based consulting firm committed to inspiring better buildings where people thrive.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Luminate	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	51-200	51 contacts →
	Exact match “Formed in 2006 by long time power project finance veterans, Luminate is a technically based management consultancy providing engineering, commercial and environmental services and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Filsinger Energy Partners	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	11-50	50 contacts →
	Exact match “Filsinger Energy Partners (FEP) is a premier energy advisory firm delivering sustainable solutions for today’s energy challenges.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Spheros Environmental	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	201-500	48 contacts →
	Exact match “Environmental insight for complex real-world decisions Spheros Environmental helps clients make clear, defensible decisions in complex environments.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Iconergy, LTD	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	11-50	47 contacts →
	Exact match “Iconergy is a leading energy services company committed to revolutionizing energy management.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Quandary Consultants	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	51-200	40 contacts →
	Exact match “Quandary Consultants, LLC (QC) is an environmental and regulatory consulting company.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Lotus Engineering And Sustainability	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	11-50	23 contacts →
	Exact match “Formed in 2012, Lotus is a women-owned, data driven, and client-centered sustainability consulting firm.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Solum Consulting Group	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	15 contacts →
	Exact match “The environment and sustainability are key considerations across the mining, energy and resources sectors.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Adamantine Energy	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	12 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	American Energy Assets, LLC	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	11-50	12 contacts →
	Exact match “American Energy Assets can show you how to save tens of thousands-perhaps hundreds of thousands-on your annual energy bill.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Environmental Technical Solutions, LLC	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	9 contacts →
	Exact match “ETS provides a dynamic team of experts needed to support a wide range of environmental services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	The Fresh Ideas Group	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	8 contacts →
	Exact match “FIG is a fiercely distinct communications agency.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Soli Technical, LLC	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	7 contacts →
	Exact match “Soli brings decades of environmental and engineering experience to solve your problems in a cost effective, practical, and timely manner.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Canopy Edge	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	11-50	4 contacts →
	Exact match “Canopy Edge is a global management consulting firm that provides clients with the strategic advice and tools needed to navigate and excel in the Net Zero corporate sustainability…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Conductive Consulting, LLC	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	4 contacts →
	Exact match “At Conductive Consulting, we strive to provide innovative energy and water management solutions that help our clients design, implement, and monitor their portfolio.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Shelterbelt Design	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	4 contacts →
	Exact match “ShelterBelt Design was established in 2015 and is founded on building valuable relationships and providing exceptional design synergetic with the great outdoors.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Diverse	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	3 contacts →
	Exact match “Leading expert communication strategies to help businesses achieve their sustainability goals.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Path21 Architecture	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	11-50	2 contacts →
	Exact match “ARCHITECTURE INTERIOR DESIGN PLANNING- With the goal of creating innovative and high value architecture, path21 has built a team of professionals that excel in different aspects…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Ensight Energy Consulting	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	2 contacts →
	Exact match “Based in Denver, Ensight Energy Consulting provides a wide range of services to the power, energy, and renewable-energy sectors.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Slosky & Company	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	2 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Bristlecone Ecology	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	2 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Sustainability Core Advisors, INC	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	2 contacts →
	Exact match “Sustainability Core Advisors is a consulting firm focused primarily on mid-market companies, with an emphasis on helping them achieve the “Triple Bottom Line:” social…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Kavi Consulting Services	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	2 contacts →
	Exact match “Creating true and equitable sustainability for organizations, the people they care for, and the planet by building fully integrated ESG programs.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Jodi Stemler Consulting	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	2 contacts →
	Exact match “Jodi Stemler Consulting focuses on the nexus between policy and communications for the natural resource conservation community and outdoor industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	BIG Glasses Consulting	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	1-10	2 contacts →
	Exact match “You lead a mission-driven business or B Corp, but you don't know how to show ESG impact and/or its financial value- We help B Corps and mission-driven business measure financial…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “environmental sustainability consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 81 environmental sustainability consulting firms based in Denver, United States

See the full list, filter by size, metro and specialty, and access 315 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental sustainability consulting firms based in Denver, United States at a glance

As of Sep 21, 2026

56.2%Verified-email coverage

6.9Average contacts per company

1-10Median size (employees)

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Denver, so it is reported there. Company counts and contact totals on this page are exact for Denver, over 81 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Denver, United States whose business descriptions match “environmental sustainability consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 315 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Environmental sustainability consulting firms by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “environmental sustainability consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental sustainability consulting firms are there based in Denver, United States?

RevenueBase identified 81 company matches for environmental sustainability consulting firms associated with Denver, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Group14 Engineering, PBC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most environmental sustainability consulting firms?

New York leads the United States with 237 company records, followed by Houston (131) and Los Angeles (101). Denver has 81.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 315 professional contacts with verified work emails tracked across these 81 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.