Company lists · Data refreshed September 2026

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

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 72 companies tracked

RevenueBase identified 72 environmental sustainability consulting firms headquartered in Portland, United States as of September 2026 and tracks 662 professional contacts across them, including 428 with verified work emails. New York is the largest hub.

This list covers environmental sustainability consulting firms headquartered in Portland, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

72Companies

662Contacts tracked

428Verified emails

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

Ranked by team size

Top 25 of 72 environmental sustainability consulting firms based in Portland, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to environmental sustainability consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Cascade Energy	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	201-500	288 contacts →
	Indirect evidence “At Cascade Energy, we believe in better.” Source: RevenueBase Database · checked Sep 21, 2026
2	Brightworks Sustainability	Partial evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	51-200	61 contacts →
	Partial evidence “Recognized for advanced subject matter expertise, wide-ranging technical resources, creative problem-solving, and excellence in professional practice, Brightworks Sustainability…” Source: RevenueBase Database · checked Sep 21, 2026
3	Competitive Energy Services	Indirect evidence	Portland, ME, United StatesHQ checked Sep 21, 2026	11-50	40 contacts →
	Indirect evidence “Founded in by career energy professionals, Competitive Energy Services, LLC (CES) has been on the forefront of energy procurement since the advent of deregulation.” Source: RevenueBase Database · checked Sep 21, 2026
4	FB Environmental Associates	Partial evidence	Portland, ME, United StatesHQ checked Sep 21, 2026	11-50	28 contacts →
	Partial evidence “Where Science Meets Civics" Our Mission: FB Environmental is dedicated to practical stewardship of our natural world.” Source: RevenueBase Database · checked Sep 21, 2026
5	Stillwater Energy	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	22 contacts →
	Indirect evidence “Descending from the Beartooth Mountains in Yellowstone, Montana’s Stillwater River inspires all who see it.” Source: RevenueBase Database · checked Sep 21, 2026
6	OH Planning Design, Architecture	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	22 contacts →
	Indirect evidence “Optimism and Health.” Source: RevenueBase Database · checked Sep 21, 2026
7	Samara Group PDX	Partial evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	19 contacts →
	Partial evidence “Samara Group LLC was founded to enhance environmental projects centered around rigorous science, inclusive partnerships, and effective communications.” Source: RevenueBase Database · checked Sep 21, 2026
8	Mosaic Ecology LLC	Partial evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	17 contacts →
	Partial evidence “As a natural resource management firm, we provide the expertise and resources to sustainably integrate natural areas into the human environment, bring degraded land to life, and…” Source: RevenueBase Database · checked Sep 21, 2026
9	Strategic Energy Group	Partial evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	15 contacts →
	Partial evidence “Our mission is to provide environmentally responsible resource management that creates a competitive advantage for our clients and to provide a rewarding work environment for our…” Source: RevenueBase Database · checked Sep 21, 2026
10	Evren Northwest, INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
11	Triplewin Advisory	Partial evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	8 contacts →
	Partial evidence “Everyone is too aware of the dangers of ignoring sustainability, but are you aware of the range of advantages in a proper sustainability strategy?” Source: RevenueBase Database · checked Sep 21, 2026
12	Creative Renewable Solutions, LLC	Strong evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	6 contacts →
	Strong evidence “Creative Renewable Solutions is a clean energy consulting firm that helps businesses, utilities, and clean energy developers achieve their unique sustainability and performance…” Source: RevenueBase Database · checked Sep 21, 2026
13	Gordian Knot Strategies	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	6 contacts →
	Indirect evidence “At Gordian Knot Strategies, we are expert climate finance consultants.” Source: RevenueBase Database · checked Sep 21, 2026
14	Harka Architecture, LLC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	6 contacts →
	Indirect evidence “Harka was founded with an inquisitive spirit and lofty objective: to create beautiful and inspiring spaces that possess the lowest carbon footprint possible while empowering their…” Source: RevenueBase Database · checked Sep 21, 2026
15	Briburn	Partial evidence	Portland, ME, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Partial evidence “BRIBURN is committed to creating innovative, energy efficient, and environmentally sound solutions, for residential, commercial, institutional, and civic projects, that artfully…” Source: RevenueBase Database · checked Sep 21, 2026
16	Ehns Partners	Strong evidence	Portland, ME, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Strong evidence “EHNS Partners is a small dedicated team specializing in environmental, health, and safety consulting and engineering.” Source: RevenueBase Database · checked Sep 21, 2026
17	Anchor Blue Consulting, LLC	Partial evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Partial evidence “Anchor Blue LLC is a small energy consulting firm specializing in services related to energy efficiency, renewable energy, demand response and other demand side management…” Source: RevenueBase Database · checked Sep 21, 2026
18	Northwest Energy Collaborative	Partial evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Partial evidence “Northwest Energy Collaborative is a Green Building Consulting Firm that applies high performance building improvement methods and extensive construction knowledge to help…” Source: RevenueBase Database · checked Sep 21, 2026
19	EES Environmental Consulting INC	Partial evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Partial evidence “EES is a unique team of professional consultants specializing in environmental assessment, investigation, and cleanup services.” Source: RevenueBase Database · checked Sep 21, 2026
20	Environs, LLC	Indirect evidence	Portland, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “environs is a comprehensive sustainable design/ build firm serving homeowners in portland, oregon.” Source: RevenueBase Database · checked Sep 21, 2026
21	Natures Footprint INC	Partial evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Partial evidence “NATURES FOOTPRINT INC is a renewables & environment company based out of 2415 Se Moores St, Portland, Oregon, United States.” Source: RevenueBase Database · checked Sep 21, 2026
22	Project Pivot	Strong evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Strong evidence “Project Pivot is a women-owned, sustainability consulting firm in Portland, Oregon.” Source: RevenueBase Database · checked Sep 21, 2026
23	Aquarius Environmental, LLC	Strong evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	3 contacts →
	Strong evidence “Aquarius Environmental is an environmental engineering and consulting firm specializing in water related design, treatment, and compliance.” Source: RevenueBase Database · checked Sep 21, 2026
24	Cleanfuture, INC	Strong evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	3 contacts →
	Strong evidence “CleanFuture is a consulting firm providing business and technical expertise in supply chain, sustainability, the combination of sustainability + supply chain, and a specialized…” Source: RevenueBase Database · checked Sep 21, 2026
25	Kaleido Studio	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	3 contacts →
	Indirect evidence “Kaleido Studio is a Portland-based architectural design firm rooted in the Pacific Northwest.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: environmental sustainability consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names environmental sustainability consulting firms.
Partial evidence: Its own public description names part of environmental sustainability consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental sustainability consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 72 environmental sustainability consulting firms based in Portland, United States

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

As of Sep 21, 2026

64.7%Verified-email coverage

9.2Average contacts per company

1-10Median size (employees)

329.2%Largest-city concentration · New York

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 Portland, so it is reported there. Company counts and contact totals on this page are exact for Portland, over 72 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among environmental sustainability consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Portland, United States whose own description of what they do matches “environmental sustainability consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names environmental sustainability consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among environmental sustainability consulting firms, and records with no verified work email. Companies headquartered outside Portland are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 428 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Environmental sustainability consulting firms by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names environmental sustainability consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 72 environmental sustainability consulting firms headquartered in Portland, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Cascade Energy, headquartered in Portland, tops this list with the largest team on record.

Which city has the most environmental sustainability consulting firms?

New York leads with 237 headquartered companies, followed by Houston (131) and Los Angeles (101).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 428 verified decision-maker contacts tracked across these 72 companies.

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 Smart Search, 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.