Company lists · Data refreshed September 2026

Top 25 Oil filled transformer manufacturers based in Canada

Name: Oil filled transformer manufacturers based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 61 companies tracked

RevenueBase identified 61 oil filled transformer manufacturers headquartered in Canada as of September 2026 and tracks 2,573 professional contacts across them, including 1,070 with verified work emails. Calgary is the largest hub.

This list covers oil filled transformer manufacturers headquartered in 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 30, 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 30, 2026 86% judged on-target in blind review

61Companies

2,573Contacts tracked

1,070Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest oil filled transformer manufacturers based in Canada

Ranked by team size

Top 25 of 61 oil filled transformer manufacturers based in Canada, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to oil filled transformer manufacturers: 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	Hammond Power Solutions	Strong evidence	Guelph, ON, CanadaHQ checked Sep 30, 2026	1,001-5,000	636 contacts →
	Strong evidence “Hammond Power Solutions is a North American leader for the design and manufacture of dry-type standard and custom electrical engineered magnetics, liquid filled and cast resin…” Source: RevenueBase Database · checked Sep 30, 2026
2	JFE Shoji Power Canada INC	Partial evidence	Burlington, ON, CanadaHQ checked Sep 30, 2026	501-1,000	263 contacts →
	Partial evidence “JFE Shoji Power Canada is an electrical steel products manufacturer located in Burlington, Ontario.” Source: RevenueBase Database · checked Sep 30, 2026
3	PTI Transformers	Indirect evidence	Regina, SK, CanadaHQ checked Sep 30, 2026	201-500	190 contacts →
	Indirect evidence “With experience manufacturing, repairing and servicing distribution equipment, Partner Technologies Inc.” Source: RevenueBase Database · checked Sep 30, 2026
4	Powersmiths International Corp	Indirect evidence	Brampton, ON, CanadaHQ checked Sep 30, 2026	51-200	114 contacts →
	Indirect evidence “For more than 20 years, Powersmiths has been an industry leader in engineering, manufacturing and selling innovative, customer-centric and energy-efficient electrical power…” Source: RevenueBase Database · checked Sep 30, 2026
5	CES Transformers	Partial evidence	Markham, ON, CanadaHQ checked Sep 30, 2026	51-200	104 contacts →
	Partial evidence “Our mission at CES Transformers is to provide high-quality, reliable, and innovative transformer solutions that meet the evolving needs of our customers.” Source: RevenueBase Database · checked Sep 30, 2026
6	REV	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 30, 2026	201-500	93 contacts →
	Indirect evidence “REV leads the electrical industry with flexible, durable, and reliable electrical solutions across diverse sectors.” Source: RevenueBase Database · checked Sep 30, 2026
7	Carte International INC	Strong evidence	Winnipeg, MB, CanadaHQ checked Sep 30, 2026	201-500	86 contacts →
	Strong evidence “Carte International has manufactured transformers since 1973.” Source: RevenueBase Database · checked Sep 30, 2026
8	Canduct Industries Limited	Strong evidence	London, ON, CanadaHQ checked Sep 30, 2026	51-200	77 contacts →
	Strong evidence “Founded in 1982, CANDUCT INDUSTRIES is a leading manufacturer Electrical Insulation, primarily used for cooling for oil cooled transformers.” Source: RevenueBase Database · checked Sep 30, 2026
9	Stein Industries INC	Indirect evidence	London, ON, CanadaHQ checked Sep 30, 2026	51-200	66 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
10	SGE	Indirect evidence	Charlesbourg, CanadaHQ checked Sep 30, 2026	51-200	63 contacts →
	Indirect evidence “La Société Générale d’Électrotechnique (SGE) est issue du regroupement de trois entreprises soeurs, soit Gémitech, Lignec et Transmag Énergie, chacune spécialisée dans un champ de…” Source: RevenueBase Database · checked Sep 30, 2026
11	Erlphase Power Technologies LTD	Partial evidence	Winnipeg, MB, CanadaHQ checked Sep 30, 2026	11-50	41 contacts →
	Partial evidence “Founded in 1993, ERLPhase began as a software and hardware engineering team developing transformer protection relays, with roots with the University of Manitoba.” Source: RevenueBase Database · checked Sep 30, 2026
12	Domino Highvoltage Supply INC	Indirect evidence	Surrey, BC, CanadaHQ checked Sep 30, 2026	11-50	41 contacts →
	Indirect evidence “Domino supplies power-related products and services to a wide variety of industry sectors.” Source: RevenueBase Database · checked Sep 30, 2026
13	Emspec	Indirect evidence	Bois Des Filion, QC, CanadaHQ checked Sep 30, 2026	51-200	41 contacts →
	Indirect evidence “EMSPEC is a global provider of equipment and services for electric power systems.” Source: RevenueBase Database · checked Sep 30, 2026
14	RR Power Consulting INC	Indirect evidence	Waterloo, ON, CanadaHQ checked Sep 30, 2026	51-200	39 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
15	Atlas Transformer	Strong evidence	Bolton, ON, CanadaHQ checked Sep 30, 2026	11-50	38 contacts →
	Strong evidence “Atlas Transformer is a Canadian corporation engaged in the Custom Design and Manufacturing of high quality Medium and High Voltage Dry Type and Liquid Filled Transformers.” Source: RevenueBase Database · checked Sep 30, 2026
16	Beaver Electrical Machinery LTD	Partial evidence	Burnaby, BC, CanadaHQ checked Sep 30, 2026	51-200	36 contacts →
	Partial evidence “Since 1955 Beaver Electrical has been providing an exceptional transformer and motor services.” Source: RevenueBase Database · checked Sep 30, 2026
17	Pacific RIM Engineered Products 1987 LTD	Indirect evidence	Surrey, BC, CanadaHQ checked Sep 30, 2026	51-200	35 contacts →
	Indirect evidence “PREP capabilities include world class power transmission engineering product development, expertise in packaging mechanical equipment, and fully integrated systems including…” Source: RevenueBase Database · checked Sep 30, 2026
18	WR Transformateurs	Strong evidence	Saint-alphonse-de-granby, QC, CanadaHQ checked Sep 30, 2026	51-200	29 contacts →
	Strong evidence “Based in Québec, WR Transformateurs develops, designs and manufactures high quality transformers that exceed various manufacturing and energy efficiency standards.” Source: RevenueBase Database · checked Sep 30, 2026
19	Novolecs	Partial evidence	Saint-augustin-de-desmaures, QC, CanadaHQ checked Sep 30, 2026	11-50	28 contacts →
	Partial evidence “With 46 years of expertise, Novolecs designs and manufactures innovative solutions for the production and distribution of energy.” Source: RevenueBase Database · checked Sep 30, 2026
20	Pioneer Transformers	Partial evidence	Granby, QC, CanadaHQ checked Sep 30, 2026	501-1,000	26 contacts →
	Partial evidence “Pioneer Transformers, an ERMCO, Inc.” Source: RevenueBase Database · checked Sep 30, 2026
21	Polycast International	Partial evidence	Winnipeg, MB, CanadaHQ checked Sep 30, 2026	51-200	23 contacts →
	Partial evidence “For over 50 years, Polycast has been a leader in the manufacture, research and development of epoxy cast products for electrical power apparatus and other industrial applications.” Source: RevenueBase Database · checked Sep 30, 2026
22	Martech Electrical Systems LTD	Partial evidence	Castlegar, BC, CanadaHQ checked Sep 30, 2026	11-50	20 contacts →
	Partial evidence “Martech Electrical Systems Ltd, with its Head Office and main plant in Castlegar, B.C, and branch plants in Cranbrook and Sparwood, B.C, designs, manufactures, distributes…” Source: RevenueBase Database · checked Sep 30, 2026
23	Helix Corporation	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 30, 2026	51-200	17 contacts →
	Partial evidence “Helix Corporation ltd was founded in 2018 and is an Edmonton based owner-operated, electrical equipment manufacturer.” Source: RevenueBase Database · checked Sep 30, 2026
24	Site Power Engineering Consultants Spec	Indirect evidence	Brentwood Bay, BC, CanadaHQ checked Sep 30, 2026	11-50	16 contacts →
	Indirect evidence “We design and deliver high-voltage power distribution systems that keep communities and industries running.” Source: RevenueBase Database · checked Sep 30, 2026
25	Altelec Technical Sales & Services	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 30, 2026	11-50	15 contacts →
	Indirect evidence “For 35 years Altelec has provided a specialized array of electrical products for industrial, utility institutional and commercial users.” Source: RevenueBase Database · checked Sep 30, 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: oil filled transformer manufacturers. 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 oil filled transformer manufacturers.
Partial evidence: Its own public description names part of oil filled transformer manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil filled transformer manufacturers. 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 61 oil filled transformer manufacturers based in Canada

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,070 reachable decision-makers.

Free signup · no credit card

View the full list →

Oil filled transformer manufacturers based in Canada at a glance

As of Sep 30, 2026

41.6%Verified-email coverage

42.2Average contacts per company

11-50Median size (employees)

8.2%Largest-city concentration · Calgary

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 61 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 oil filled transformer manufacturers, 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 Canada whose own description of what they do matches “oil filled transformer manufacturers”. 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 oil filled transformer manufacturers), 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 oil filled transformer manufacturers, and records with no verified work email. Companies headquartered outside Canada 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, 1,070 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 30, 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.

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 oil filled transformer manufacturers, 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 oil filled transformer manufacturers are there based in Canada?

RevenueBase identified 61 oil filled transformer manufacturers headquartered in 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?

Hammond Power Solutions, headquartered in Guelph, tops this list with the largest team on record.

Which city has the most oil filled transformer manufacturers?

Calgary leads with 5 headquartered companies, followed by Burlington (3) and Granby (3).

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 1,070 verified decision-maker contacts tracked across these 61 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 30, 2026.

Ready to reach these companies? Verified emails and direct dials for all 61 oil filled transformer manufacturers based in Canada. Start with a free account, no credit card.

Download this list →

Related lists

Oil filled transformer manufacturers by geography

Browse the directory

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.