Company lists · Data refreshed September 2026

Top 25 Cleantech companies based in Toronto, Canada

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 120 companies tracked

RevenueBase identified 120 cleantech companies headquartered in Toronto, Canada as of September 2026 and tracks 968 professional contacts across them, including 514 with verified work emails. Toronto is the largest hub.

This list covers cleantech 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 19, 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 19, 2026 86% judged on-target in blind review

120Companies

968Contacts tracked

514Verified emails

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The 25 largest cleantech companies based in Toronto, Canada

Ranked by team size

Top 25 of 120 cleantech companies based in Toronto, Canada, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to cleantech 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	Polaron Energy	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	51-200	123 contacts →
	Indirect evidence “Polaron has defined excellence in Canada’s renewable energy sector since 2013, with proven staying power amid a fast paced industry and a vast portfolio of over installations.” Source: RevenueBase Database · checked Sep 19, 2026
2	Blackstone Energy Services INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 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 19, 2026
3	Peak Power INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	51-200	78 contacts →
	Indirect evidence “Peak Power delivers end-to-end battery storage development and energy optimization solutions powered by industry-leading peak forecasting and energy market intelligence.” Source: RevenueBase Database · checked Sep 19, 2026
4	Clearblue Markets	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 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 19, 2026
5	Bullfrog Power	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	11-50	32 contacts →
	Indirect evidence “Bullfrog Power, an Envest Corp.” Source: RevenueBase Database · checked Sep 19, 2026
6	Char Technologies LTD	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	11-50	30 contacts →
	Indirect evidence “CHAR Tech (TSXV:YES)(OTC PINK:CTRNF)(FSE:68K) is a Canadian clean-technology company developing first-in-kind high-temperature pyrolysis ("HTP") systems that process…” Source: RevenueBase Database · checked Sep 19, 2026
7	Stormfisher Hydrogen	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “StormFisher develops and operates facilities that recycle energy and water in an environmentally and economically sustainable manner.” Source: RevenueBase Database · checked Sep 19, 2026
8	Noventa Energy Partners	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 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 19, 2026
9	Enersavings INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 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 19, 2026
10	Powerhaus Consulting Part Of SLR	Strong evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	11-50	23 contacts →
	Strong evidence “We are a full-service electrical engineering firm specialized in solving challenges using emerging cleantech power solutions.” Source: RevenueBase Database · checked Sep 19, 2026
11	Volta Energy	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 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 19, 2026
12	Green Integrations INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	11-50	19 contacts →
	Indirect evidence “At Green Integrations, we’re committed to making sustainable energy solutions practical, accessible, and impactful.” Source: RevenueBase Database · checked Sep 19, 2026
13	Envirogold Global	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	11-50	17 contacts →
	Indirect evidence “EnviroGold Global (CSE: NVRO)(OTCQB: ESGLF)(FSE: YGK), is a Clean Technology company dedicated to creating shareholder value while establishing ESG & circular economy leadership…” Source: RevenueBase Database · checked Sep 19, 2026
14	Abraxas Power	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 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 19, 2026
15	Envest Corp	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	51-200	13 contacts →
	Indirect evidence “Envest is an independent energy producer delivering private utility and recycling solutions to industry and government.” Source: RevenueBase Database · checked Sep 19, 2026
16	Base Carbon	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “Base Carbon provides capital, development expertise and management operating resources to projects involved in the global carbon markets.” Source: RevenueBase Database · checked Sep 19, 2026
17	Watershed Technologies INC	Indirect evidence	Toronto, CanadaHQ checked Sep 19, 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 19, 2026
18	Energy Work INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	1-10	12 contacts →
	Indirect evidence “Energy@Work Inc.” Source: RevenueBase Database · checked Sep 19, 2026
19	Quwa Smart Services	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	1-10	11 contacts →
	Indirect 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 19, 2026
20	OYA Renewables	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	51-200	10 contacts →
	Indirect evidence “OYA Renewables is leading the renewable energy transition with an exceptional track record as a top ten solar developer and independent power producer.” Source: RevenueBase Database · checked Sep 19, 2026
21	Subterra Renewables	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “Subterra Renewables develops and operates thermal district energy systems using the latest geothermal and heat recovery technology.” Source: RevenueBase Database · checked Sep 19, 2026
22	Ecogrid Technologies INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “Turn Key Energy Efficiency Solutions Provider” Source: RevenueBase Database · checked Sep 19, 2026
23	Ontario Clean Technology Industry Association	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “The voice of the clean technology industry in Ontario, The Ontario Clean Technology Industry Association (OCTIA) exists to promote, foster, and grow the clean technology sector.” Source: RevenueBase Database · checked Sep 19, 2026
24	Cascara Energy	Indirect evidence	Toronto, CanadaHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “Cascara Energy provides a scalable, economical and technologically advanced alternative to the existing natural gas and electrical distribution systems;#5GDHC is the fastest path…” Source: RevenueBase Database · checked Sep 19, 2026
25	Compass Energy Consulting	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “Compass Energy Consulting (“Compass”) is a boutique management consulting firm that is focused on providing strategic, technical, financial, and development support to the…” Source: RevenueBase Database · checked Sep 19, 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: cleantech 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 cleantech companies.
Partial evidence: Its own public description names part of cleantech companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cleantech 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 120 cleantech companies based in Toronto, Canada

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Cleantech companies based in Toronto, Canada at a glance

As of Sep 19, 2026

53.1%Verified-email coverage

8.1Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Toronto

Sep 19, 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 Canada list rather than for Toronto, so it is reported there. Company counts and contact totals on this page are exact for Toronto, over 120 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 cleantech 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 “cleantech 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 cleantech 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 cleantech 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, 514 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 19, 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.

Cleantech companies by metro in Canada

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 cleantech 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 cleantech companies are there based in Toronto, Canada?

RevenueBase identified 120 cleantech 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?

Polaron Energy, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most cleantech companies?

Toronto leads with 120 headquartered companies, followed by Calgary (98) and Vancouver (58).

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 514 verified decision-maker contacts tracked across these 120 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 19, 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.