Company lists · Data refreshed September 2026

Top 25 Sustainability and climate change consulting firms based in Toronto, Canada

Name: Sustainability and climate change consulting firms based in Toronto, Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 140 companies tracked

RevenueBase identified 140 sustainability and climate change consulting firms headquartered in Toronto, Canada as of September 2026 and tracks 922 professional contacts across them, including 412 with verified work emails. Toronto is the largest hub.

This list covers sustainability and climate change consulting firms headquartered in Toronto, Canada, 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

140Companies

922Contacts tracked

412Verified emails

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The 25 largest sustainability and climate change consulting firms based in Toronto, Canada

Ranked by team size

Top 25 of 140 sustainability and climate change consulting firms based in Toronto, Canada, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to sustainability and climate change 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	Blackstone Energy Services INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	98 contacts →
	Indirect evidence “Blackstone Energy is an energy transition company that delivers responsible energy and carbon management.” Source: RevenueBase Database · checked Sep 21, 2026
2	Clearblue Markets	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	66 contacts →
	Indirect evidence “ClearBlue empowers clients to take action, manage risk and realize value in the carbon markets via technology-enabled solutions.” Source: RevenueBase Database · checked Sep 21, 2026
3	Quinn Partners	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	53 contacts →
	Strong evidence “Quinn+Partners is a leading management consultancy specializing in corporate sustainability, sustainable finance, climate change and responsible investment advisory services.” Source: RevenueBase Database · checked Sep 21, 2026
4	Footprint	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	37 contacts →
	Strong evidence “Footprint is a consulting practice comprised of a highly-specialized team of professionals dedicated entirely to sustainability.” Source: RevenueBase Database · checked Sep 21, 2026
5	Goldfin Consulting INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	31 contacts →
	Indirect evidence “Our clients want to do what they’re great at while becoming more sustainable, resilient, and competitive.” Source: RevenueBase Database · checked Sep 21, 2026
6	Weis L Retail Network Innovation	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	31 contacts →
	Partial evidence “WEIS is a consulting firm that specializes in Retail Network Innovation.” Source: RevenueBase Database · checked Sep 21, 2026
7	Ecovert Member Of BPA	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	29 contacts →
	Strong evidence “Ecovert is a full service sustainability consulting firm committed to creating economic, environmental and social synergies for the development sector.” Source: RevenueBase Database · checked Sep 21, 2026
8	CD Sonter LTD	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	28 contacts →
	Partial evidence “CD SONTER, an industry leader in sustainable solutions, provides waste auditing and environmental consulting, and project management of environmental awards and certifications.” Source: RevenueBase Database · checked Sep 21, 2026
9	Adaptis	Indirect evidence	Toronto, CanadaHQ checked Sep 21, 2026	11-50	27 contacts →
	Indirect evidence “Adaptis is a diverse team of carbon reduction experts supercharged by a proprietary software platform for evaluating and optimizing building performance, whole-life carbon, and…” Source: RevenueBase Database · checked Sep 21, 2026
10	Brooklin Consulting	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	19 contacts →
	Partial evidence “We help clients - whether it is managing growth opportunities, introducing new technologies, fostering behavioural change or opening profit bottlenecks.” Source: RevenueBase Database · checked Sep 21, 2026
11	Sustainable	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1-10	18 contacts →
	Strong evidence “Sustainable was created in 2009 with a vision to fight climate change through transforming our built environment with creative design.” Source: RevenueBase Database · checked Sep 21, 2026
12	Anyway Solutions	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	14 contacts →
	Strong evidence “AnyWay Solutions is an engineering consulting firm that has been at the forefront of providing climate-resilient solutions for transport infrastructure for over two decades.” Source: RevenueBase Database · checked Sep 21, 2026
13	Watershed Technologies INC	Partial evidence	Toronto, CanadaHQ checked Sep 21, 2026	11-50	13 contacts →
	Partial evidence “Watershed offers science and technology based solutions to enable the transition to sustainability.” Source: RevenueBase Database · checked Sep 21, 2026
14	DCS Global	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “At DCS Global, we support organizations across a wide range of industries and business sectors to achieve cleaner, healthier, more sustainable, cost-effective, and environmentally…” Source: RevenueBase Database · checked Sep 21, 2026
15	Energy Work INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1-10	12 contacts →
	Indirect evidence “Energy@Work Inc.” Source: RevenueBase Database · checked Sep 21, 2026
16	Plancatalyst	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1-10	11 contacts →
	Partial evidence “PlanCatalyst is a subsidiary of Plan International Canada that provides specialized consultancy services in international development and corporate sustainability.” Source: RevenueBase Database · checked Sep 21, 2026
17	Quwa Smart Services	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1-10	11 contacts →
	Partial evidence “Quwa Smart Services Inc (QSS) is a dynamic engineering consulting firm specializing in Energy Management, Decarbonization and Smart Technology Solutions.” Source: RevenueBase Database · checked Sep 21, 2026
18	Coolearth Architecture INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1-10	10 contacts →
	Indirect evidence “We are an architectural firm specializing in sustainable design.” Source: RevenueBase Database · checked Sep 21, 2026
19	A& Architects	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “A & Architects was established with the vision that architecture can enhance quality of life through smart and refined design.” Source: RevenueBase Database · checked Sep 21, 2026
20	Suslop INC	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1-10	9 contacts →
	Partial evidence “Suslop is a management consulting firm.” Source: RevenueBase Database · checked Sep 21, 2026
21	Yava Technologies INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1-10	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
22	AA Impact INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	7 contacts →
	Indirect evidence “We specialize in guiding and transitioning Energy, Supply Chain and Financial Service businesses towards environmentally conscious and socially responsible practices.” Source: RevenueBase Database · checked Sep 21, 2026
23	Green Reason INC	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1-10	7 contacts →
	Partial evidence “A sustainable building consulting and project management company.” Source: RevenueBase Database · checked Sep 21, 2026
24	Hardy Stevenson And Associates Limited	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1-10	7 contacts →
	Indirect evidence “Hardy Stevenson and Associates Limited (HSAL) is a multi-disciplinary strategic planning and public affairs consultancy, focused on environmental and land use planning, public…” Source: RevenueBase Database · checked Sep 21, 2026
25	Nabad Consulting	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1-10	7 contacts →
	Partial evidence “We are a boutique consulting firm, specializing in designing and enhancing living spaces for the well-being of all life.” 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: sustainability and climate change 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 sustainability and climate change consulting firms.
Partial evidence: Its own public description names part of sustainability and climate change consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability and climate change 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 140 sustainability and climate change consulting firms based in Toronto, Canada

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Sustainability and climate change consulting firms based in Toronto, Canada at a glance

As of Sep 21, 2026

44.7%Verified-email coverage

6.6Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Toronto

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

100

11-50

51-200

201-500

Email recency for this list is measured across the whole Canada list rather than for Toronto, so it is reported there. Company counts and contact totals on this page are exact for Toronto, over 140 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 and climate change 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 Toronto, Canada whose own description of what they do matches “sustainability and climate change 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 sustainability and climate change 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 sustainability and climate change consulting firms, and records with no verified work email. Companies headquartered outside Toronto 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, 412 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.

Sustainability and climate change consulting firms by metro in Canada

Sustainability and climate change consulting firms in Toronto140
Sustainability and climate change consulting firms in Vancouver88
Sustainability and climate change consulting firms in Calgary81
Sustainability and climate change consulting firms in Montreal74

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 and climate change 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 sustainability and climate change consulting firms are there based in Toronto, Canada?

RevenueBase identified 140 sustainability and climate change consulting firms headquartered in Toronto, Canada 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?

Blackstone Energy Services INC, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most sustainability and climate change consulting firms?

Toronto leads with 140 headquartered companies, followed by Vancouver (88) and Calgary (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 412 verified decision-maker contacts tracked across these 140 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.