Company lists · Data verified August 2026

Top 25 Climate consulting firms based in Canada

Name: Climate consulting firms based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 646 companies tracked

There are 646 climate consulting firms headquartered in Canada (RevenueBase, August 2026). RevenueBase tracks 36,837 professional contacts across them, including 21,306 with verified work emails and 7,091 with mobile numbers. Toronto is the largest hub.

This list covers climate consulting firms headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

646Companies

36,837Contacts tracked

21,306Verified emails

7,091Mobile numbers

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The 25 largest climate consulting firms based in Canada

Ranked by team size

Top 25 of 646 climate consulting firms based in Canada, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Stantec	Edmonton, AB	10001+	28,492	16,817
2	RWDI	Victoria, BC	501-1,000	730	548
3	GBI	Repentigny, QC	201-500	449	270
4	EMM Consulting PTY Limited	Calgary, AB	201-500	356	267
5	Triton Environmental Consultants LTD	Calgary, AB	201-500	352	195
6	RDH Building Science	Waterloo, ON	201-500	333	259
7	PGL Environmental Consultants	Victoria, BC	51-200	183	90
8	Keystone Environmental	Calgary, AB	51-200	158	126
9	DWB Consulting Services LTD	Williams Lake, BC	51-200	120	68
10	GLJ LTD	Calgary, AB	51-200	112	61
11	Associated Environmental Consultants	Kelowna, BC	501-1,000	110	74
12	Blackstone Energy Services INC	Toronto, ON	51-200	96	76
13	Delphi	Calgary, AB	51-200	89	31
14	Econoler	Quebec, QC	51-200	76	46
15	Mcdaniel	Calgary, AB	51-200	75	57
16	Ckinetics	Toronto	51-200	73	39
17	Akonovia	Toronto	51-200	73	25
18	Dunsky Energy Climate Advisors	Toronto, ON	51-200	70	54
19	Prism Engineering Limited	Nelson, BC	51-200	65	47
20	Pesca Environment	Levis	51-200	61	33
21	Maskwa Environmental Consulting LTD	Calgary, AB	51-200	60	52
22	Arcadian Projects INC	New Hamburg, ON	51-200	54	22
23	Quinn Partners	Montreal, QC	11-50	51	46
24	Nerva Energy	Hamilton, ON	51-200	48	23
25	LCL	Granby, QC	11-50	47	30

Showing 25 of 646 climate consulting firms based in Canada

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Climate consulting firms based in Canada at a glance

As of Aug 28, 2026

1-10Median size (employees)

TorontoLargest hub · 102 HQs

7,091Contacts with mobile numbers

104Emails re-verified in last 30 days

Companies by employee count

1-10

480

11-50

128

51-200

201-500

501-1,000

10001+

Climate consulting firms by metro

Metro	Companies
Climate consulting firms in Toronto	102
Climate consulting firms in Calgary	80
Climate consulting firms in Vancouver	63
Climate consulting firms in Montreal	60
Climate consulting firms in Ottawa	25
Climate consulting firms in Edmonton	23
Climate consulting firms in Mississauga	12

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “climate consulting firms”, with match quality audited by blind human judging, and headquartered in Canada.
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: Contact records re-verify on a rolling cadence; 104 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many climate consulting firms are there based in Canada?

There are 646 climate consulting firms headquartered in Canada as of August 2026 (RevenueBase).

What is the largest company on this list?

Stantec, headquartered in Edmonton, tops this list with the largest team on record.

Which city has the most climate consulting firms?

Toronto leads with 102 headquartered companies, followed by Calgary (80) and Vancouver (63).

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 21,306 verified decision-maker contacts tracked across these 646 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.