Company lists · Data refreshed September 2026

Top 25 Sustainability consulting companies based in Portland, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 43 companies tracked

RevenueBase identified 43 sustainability consulting companies headquartered in Portland, United States as of September 2026 and tracks 509 professional contacts across them, including 360 with verified work emails. New York is the largest hub.

This list covers sustainability consulting companies 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 22, 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 22, 2026 86% judged on-target in blind review

43Companies

509Contacts tracked

360Verified emails

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The 25 largest sustainability consulting companies based in Portland, United States

Ranked by team size

Top 25 of 43 sustainability consulting companies based in Portland, United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sustainability consulting companies: 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 22, 2026	201-500	288 contacts →
	Indirect evidence “At Cascade Energy, we believe in better.” Source: RevenueBase Database · checked Sep 22, 2026
2	Brightworks Sustainability	Partial evidence	Portland, OR, United StatesHQ checked Sep 22, 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 22, 2026
3	Competitive Energy Services	Indirect evidence	Portland, ME, United StatesHQ checked Sep 22, 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 22, 2026
4	Stillwater Energy	Indirect evidence	Portland, OR, United StatesHQ checked Sep 22, 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 22, 2026
5	Strategic Energy Group	Indirect evidence	Portland, OR, United StatesHQ checked Sep 22, 2026	11-50	15 contacts →
	Indirect 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 22, 2026
6	Triplewin Advisory	Partial evidence	Portland, OR, United StatesHQ checked Sep 22, 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 22, 2026
7	Creative Renewable Solutions, LLC	Strong evidence	Portland, OR, United StatesHQ checked Sep 22, 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 22, 2026
8	Briburn	Indirect evidence	Portland, ME, United StatesHQ checked Sep 22, 2026	1-10	5 contacts →
	Indirect 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 22, 2026
9	Ehns Partners	Partial evidence	Portland, ME, United StatesHQ checked Sep 22, 2026	1-10	4 contacts →
	Partial evidence “EHNS Partners is a small dedicated team specializing in environmental, health, and safety consulting and engineering.” Source: RevenueBase Database · checked Sep 22, 2026
10	Anchor Blue Consulting, LLC	Partial evidence	Portland, OR, United StatesHQ checked Sep 22, 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 22, 2026
11	Northwest Energy Collaborative	Partial evidence	Portland, OR, United StatesHQ checked Sep 22, 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 22, 2026
12	Delaris LLC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “Located in beautiful Portland, Oregon we specialize in listening, then partnering with our clients to achieve results.” Source: RevenueBase Database · checked Sep 22, 2026
13	Project Pivot	Strong evidence	Portland, OR, United StatesHQ checked Sep 22, 2026	1-10	4 contacts →
	Strong evidence “Project Pivot is a women-owned, sustainability consulting firm in Portland, Oregon.” Source: RevenueBase Database · checked Sep 22, 2026
14	Cleanfuture, INC	Strong evidence	Portland, OR, United StatesHQ checked Sep 22, 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 22, 2026
15	Minerva Ventures	Indirect evidence	Portland, OR, United StatesHQ checked Sep 22, 2026	1-10	2 contacts →
	Indirect evidence “OUR MISSION We believe that economic success requires a stable climate and healthy ecosystems to enable robust markets, access to materials, transportation, energy, food, water…” Source: RevenueBase Database · checked Sep 22, 2026
16	Spring Forward LLC	Strong evidence	Portland, OR, United StatesHQ checked Sep 22, 2026	1-10	2 contacts →
	Strong evidence “Spring Forward LLC is a woman-owned sustainability consulting firm based out of Portland, Oregon.” Source: RevenueBase Database · checked Sep 22, 2026
17	Naomi Mermin Consulting	Partial evidence	Portland, ME, United StatesHQ checked Sep 22, 2026	1-10	2 contacts →
	Partial evidence “Naomi Mermin Consulting, LLC, is a woman-owned (WOSB certified) healthy housing and environmental strategy firm based in Portland, ME.” Source: RevenueBase Database · checked Sep 22, 2026
18	Brockman Climate Strategies	Indirect evidence	Portland, OR, United StatesHQ checked Sep 22, 2026	1-10	1 contacts →
	Indirect evidence “I am focused on applying my 40+ year architectural experience to help decarbonize the built environment through three areas of service- Strategic Facilitation - Policy and…” Source: RevenueBase Database · checked Sep 22, 2026
19	Five Stakes	Partial evidence	Portland, OR, United StatesHQ checked Sep 22, 2026	1-10	1 contacts →
	Partial evidence “Commitment There are roads to making progress on sustainability.and then there are shortcuts.” Source: RevenueBase Database · checked Sep 22, 2026
20	Climbsmart Strategies	Indirect evidence	Portland, OR, United StatesHQ checked Sep 22, 2026	1-10	1 contacts →
	Indirect evidence “ClimbSmart Strategies specializes in guiding organizations through the complexities of change to drive purpose-forward and sustainable transformations.” Source: RevenueBase Database · checked Sep 22, 2026
21	Sarah Cleveland Consulting	Indirect evidence	Portland, OR, United StatesHQ checked Sep 22, 2026	1-10	1 contacts →
	Indirect evidence “Our world is complex.” Source: RevenueBase Database · checked Sep 22, 2026
22	A Inman Consulting, LLC	Partial evidence	Portland, OR, United StatesHQ checked Sep 22, 2026	1-10	1 contacts →
	Partial evidence “A Inman Consulting specializes in delivering a comprehensive suite of services designed to empower our clients in the realm of energy efficiency.” Source: RevenueBase Database · checked Sep 22, 2026
23	Justin B. Green Consulting	Partial evidence	Portland, OR, United StatesHQ checked Sep 22, 2026	1-10	1 contacts →
	Partial evidence “Solutions-Oriented Consultancy Providing Environment, Energy, and Government Consulting.” Source: RevenueBase Database · checked Sep 22, 2026
24	Propel Clean Energy Partners	Indirect evidence	Portland, OR, United StatesHQ checked Sep 22, 2026	1-10	1 contacts →
	Indirect evidence “Propel Clean Energy Partners is a strategic advisory services firm dedicated to helping public, private and civil society organizations make the greatest possible impact in the…” Source: RevenueBase Database · checked Sep 22, 2026
25	Vital Message	Indirect evidence	Portland, OR, United StatesHQ checked Sep 22, 2026	1-10	1 contacts →
	Indirect evidence “To make an impact, great solutions need a great story.” Source: RevenueBase Database · checked Sep 22, 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: sustainability consulting companies. 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 sustainability consulting companies.
Partial evidence: Its own public description names part of sustainability consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability consulting companies. 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 43 sustainability consulting companies based in Portland, United States

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Sustainability consulting companies based in Portland, United States at a glance

As of Sep 22, 2026

70.7%Verified-email coverage

11.8Average contacts per company

1-10Median size (employees)

374.4%Largest-city concentration · New York

Sep 22, 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 43 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 sustainability consulting companies, 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 “sustainability consulting companies”. 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 sustainability consulting companies), 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 sustainability consulting companies, 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, 360 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 22, 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.

Sustainability consulting companies 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 sustainability consulting companies, 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 sustainability consulting companies are there based in Portland, United States?

RevenueBase identified 43 sustainability consulting companies 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 sustainability consulting companies?

New York leads with 161 headquartered companies, followed by Houston (84) and Chicago (81).

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 360 verified decision-maker contacts tracked across these 43 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 22, 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.