Company lists · Data refreshed September 2026

Top 25 Building decarbonization companies based in Toronto, Canada

Name: Building decarbonization companies based in Toronto, Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 101 companies tracked

RevenueBase identified 101 building decarbonization companies headquartered in Toronto, Canada as of September 2026 and tracks 1,541 professional contacts across them, including 847 with verified work emails. Toronto is the largest hub.

This list covers building decarbonization companies 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 16, 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 16, 2026 86% judged on-target in blind review

101Companies

1,541Contacts tracked

847Verified emails

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The 25 largest building decarbonization companies based in Toronto, Canada

Ranked by team size

Top 25 of 101 building decarbonization companies based in Toronto, Canada, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to building decarbonization 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	MCW Group Of Companies	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	201-500	363 contacts →
	Indirect evidence “Since 1964 the MCW Group has built a solid reputation for the delivery of Professional Consulting Engineering Services, Energy Management Services, and Engineering Development…” Source: RevenueBase Database · checked Sep 16, 2026
2	Blackstone Energy Services INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 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 16, 2026
3	Synergy Partners Consulting Limited	Partial evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	51-200	63 contacts →
	Partial evidence “Synergy Partners is a boutique consulting engineering firm focused on building planning and engineering.” Source: RevenueBase Database · checked Sep 16, 2026
4	The Mitchell Partnership Inc. NOW BPA	Partial evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	51-200	59 contacts →
	Partial evidence “Founded in 1958 in Toronto, The Mitchell Partnership Inc.(TMP) is a mechanical building services consulting engineering practice.” Source: RevenueBase Database · checked Sep 16, 2026
5	Continual Energy INC	Indirect evidence	Toronto, CanadaHQ checked Sep 16, 2026	51-200	55 contacts →
	Indirect evidence “The team at Continual Energy Inc.” Source: RevenueBase Database · checked Sep 16, 2026
6	Inviro Engineered Systems LTD	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	51-200	51 contacts →
	Indirect evidence “INVIRO is a full-service Canadian engineering firm specializing in mechanical and electrical systems, along with sustainability consulting.” Source: RevenueBase Database · checked Sep 16, 2026
7	Enerva Energy Solutions	Partial evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	51-200	48 contacts →
	Partial evidence “Founded in 2017, Enerva Energy Solutions is a proud 100% Canadian employee-owned and operated organization, focused on energy efficiency, program management, and decarbonization.” Source: RevenueBase Database · checked Sep 16, 2026
8	Diverso Energy	Partial evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	51-200	41 contacts →
	Partial evidence “Diverso Energy is North America’s first fully vertically integrated geothermal utility company, helping developers, building owners, and investors deliver low-carbon heating and…” Source: RevenueBase Database · checked Sep 16, 2026
9	Purpose Building INC	Partial evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	11-50	32 contacts →
	Partial evidence “Purpose develops solutions for healthy, long-life buildings that work in a low-carbon, circular economy.” Source: RevenueBase Database · checked Sep 16, 2026
10	Bullfrog Power	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	11-50	32 contacts →
	Indirect evidence “Bullfrog Power, an Envest Corp.” Source: RevenueBase Database · checked Sep 16, 2026
11	Enerlife Consulting INC	Partial evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	11-50	30 contacts →
	Partial evidence “Enerlife helps owners and managers achieve the full potential of their buildings, drawing on our dynamic national database and experience with leading organizations to provide…” Source: RevenueBase Database · checked Sep 16, 2026
12	Ecovert Member Of BPA	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	11-50	29 contacts →
	Indirect 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 16, 2026
13	Noventa Energy Partners	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	11-50	27 contacts →
	Indirect evidence “Noventa is a renewable energy company providing proprietary solutions to reduce carbon emissions and manage energy costs through a full suite of services that range from…” Source: RevenueBase Database · checked Sep 16, 2026
14	Enersavings INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	51-200	27 contacts →
	Indirect evidence “EnerSavings Inc is committed to providing a sustainable and tailored energy-saving solution, so our customers reduce operating expenses, eliminate maintenance, boost the…” Source: RevenueBase Database · checked Sep 16, 2026
15	Adaptis	Partial evidence	Toronto, CanadaHQ checked Sep 16, 2026	11-50	27 contacts →
	Partial 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 16, 2026
16	The Aquila Group	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	11-50	26 contacts →
	Indirect evidence “The Aquila Group is a mechanical and electrical engineering firm located at 40 University Ave, Toronto, Ontario, Canada.” Source: RevenueBase Database · checked Sep 16, 2026
17	Volta Energy	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	11-50	20 contacts →
	Indirect evidence “Founded in 2009, Volta has been ahead of the grain in creating a sustainable future for over a decade.” Source: RevenueBase Database · checked Sep 16, 2026
18	Enform Architects INC	Partial evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	11-50	19 contacts →
	Partial evidence “At ENFORM we specialize in high performance buildings that use very low amounts of energy.” Source: RevenueBase Database · checked Sep 16, 2026
19	Abraxas Power	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	51-200	14 contacts →
	Indirect evidence “Abraxas is an energy transition developer, focused on decarbonizing hard-to-abate sectors and creating value by solving the current and future challenges of the energy transition.” Source: RevenueBase Database · checked Sep 16, 2026
20	Watershed Technologies INC	Indirect evidence	Toronto, CanadaHQ checked Sep 16, 2026	11-50	13 contacts →
	Indirect evidence “Watershed offers science and technology based solutions to enable the transition to sustainability.” Source: RevenueBase Database · checked Sep 16, 2026
21	Airgenuity INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	11-50	12 contacts →
	Indirect evidence “Located in Toronto and servicing all of southern Ontario and Quebec, AirGenuity was founded in as an engineering and integration firm specializing in precision airflow in critical…” Source: RevenueBase Database · checked Sep 16, 2026
22	Energy Work INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	1-10	12 contacts →
	Indirect evidence “Energy@Work Inc.” Source: RevenueBase Database · checked Sep 16, 2026
23	Duffy & Associates Design Build	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	11-50	12 contacts →
	Indirect evidence “Duffy & Associates employs approximately 15 full time staff.” Source: RevenueBase Database · checked Sep 16, 2026
24	Circuit Energy	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 16, 2026	1-10	11 contacts →
	Indirect evidence “We are a full-service Engineering/Contracting Company with partners in various fields of Electrical, Mechanical, Industrial and Civil Engineering.” Source: RevenueBase Database · checked Sep 16, 2026
25	Quwa Smart Services	Partial evidence	Toronto, ON, CanadaHQ checked Sep 16, 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 16, 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: building decarbonization 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 building decarbonization companies.
Partial evidence: Its own public description names part of building decarbonization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name building decarbonization 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 101 building decarbonization companies based in Toronto, Canada

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Building decarbonization companies based in Toronto, Canada at a glance

As of Sep 16, 2026

55.0%Verified-email coverage

15.3Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Toronto

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 101 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 building decarbonization 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 Toronto, Canada whose own description of what they do matches “building decarbonization 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 building decarbonization 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 building decarbonization companies, 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, 847 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 16, 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.

Building decarbonization companies by metro in Canada

Building decarbonization companies in Toronto101
Building decarbonization companies in Montreal45
Building decarbonization companies in Calgary44
Building decarbonization companies in Vancouver44

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 building decarbonization 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 building decarbonization companies are there based in Toronto, Canada?

RevenueBase identified 101 building decarbonization companies 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?

MCW Group Of Companies, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most building decarbonization companies?

Toronto leads with 101 headquartered companies, followed by Montreal (45) and Calgary (44).

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 847 verified decision-maker contacts tracked across these 101 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 16, 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.