Company lists · Data refreshed September 2026

Top 25 Infrastructure companies based in Calgary, Canada

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

Compiled by the RevenueBase Data Team Data refreshed Sep 15, 2026 81 companies tracked

RevenueBase identified 81 infrastructure companies headquartered in Calgary, Canada as of September 2026 and tracks 9,557 professional contacts across them, including 4,316 with verified work emails. Calgary is the largest hub.

This list covers infrastructure companies headquartered in Calgary, 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 15, 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 15, 2026 86% judged on-target in blind review

81Companies

9,557Contacts tracked

4,316Verified emails

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The 25 largest infrastructure companies based in Calgary, Canada

Ranked by team size

Top 25 of 81 infrastructure companies based in Calgary, Canada, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure 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	Enerflex LTD	Strong evidence	Calgary, CanadaHQ checked Sep 15, 2026	1,001-5,000	3,207 contacts →
	Strong evidence “Enerflex is a premier integrated global provider of energy infrastructure and energy transition solutions, deploying natural gas, low-carbon, and treated water solutions – from…” Source: RevenueBase Database · checked Sep 15, 2026
2	Inter Pipeline	Strong evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	501-1,000	1,067 contacts →
	Strong evidence “We are a major energy infrastructure business that has experienced tremendous growth over the past decade.” Source: RevenueBase Database · checked Sep 15, 2026
3	Altagas LTD	Strong evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	1,001-5,000	933 contacts →
	Strong evidence “We are a leading North American infrastructure company connecting customers and markets to affordable and reliable sources of energy.” Source: RevenueBase Database · checked Sep 15, 2026
4	Gibson Energy	Strong evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	501-1,000	719 contacts →
	Strong evidence “Gibson is a leading liquids infrastructure company with its principal businesses consisting of the storage, optimization, processing, and gathering of liquids and refined…” Source: RevenueBase Database · checked Sep 15, 2026
5	Surerus Murphy Joint Venture	Strong evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	501-1,000	498 contacts →
	Strong evidence “Surerus Murphy Joint Venture (SMJV) brings together two leading infrastructure companies, Surerus Pipeline Inc.” Source: RevenueBase Database · checked Sep 15, 2026
6	Site Resource Group	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	501-1,000	338 contacts →
	Indirect evidence “From conception to completion, SITE Resource Group (SITE) has the capability to provide comprehensive services for the successful construction, maintenance and reclamation of our…” Source: RevenueBase Database · checked Sep 15, 2026
7	Volker Stevin	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	1,001-5,000	243 contacts →
	Indirect evidence “Since 1978, Volker Stevin has been dedicated to enhancing communities and connecting people with progress.” Source: RevenueBase Database · checked Sep 15, 2026
8	Mastec Canada	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	1,001-5,000	192 contacts →
	Indirect evidence “MasTec Canada delivers a broad range of construction solutions.” Source: RevenueBase Database · checked Sep 15, 2026
9	Arnett & Burgess Energy Services	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	201-500	190 contacts →
	Indirect evidence “Over 65 years strong, Arnett & Burgess Energy Services (A&B) provides pipeline and facility construction, pipeline integrity, pipeline coating, heavy civil earthworks &…” Source: RevenueBase Database · checked Sep 15, 2026
10	Whissell Contracting LTD	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	201-500	189 contacts →
	Indirect evidence “Whissell was founded in Calgary in 1970 as a water and sewer contractor.” Source: RevenueBase Database · checked Sep 15, 2026
11	Integrated Sustainability	Strong evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	51-200	115 contacts →
	Strong evidence “Integrated Sustainability is a performance infrastructure group providing advisory, design-build-supply, and operational expertise in water and wastewater treatment, water and…” Source: RevenueBase Database · checked Sep 15, 2026
12	North Star Contracting INC	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	201-500	89 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 15, 2026
13	Stratus Electrical & Instrumentation	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	51-200	82 contacts →
	Indirect evidence “Stratus is an electrical and instrumentation company capable of a broad range of projects and capable of servicing any location in Western Canada.” Source: RevenueBase Database · checked Sep 15, 2026
14	Secure Energy	Strong evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	1,001-5,000	60 contacts →
	Strong evidence “Headquartered in Calgary, Alberta, SECURE has a diverse suite of customer-driven solutions in Environmental Waste Management Infrastructure, including Waste Processing Facilities…” Source: RevenueBase Database · checked Sep 15, 2026
15	Gator Construction Built Different	Strong evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	51-200	47 contacts →
	Strong evidence “Gator partners with owners and operators of critical infrastructure across the full asset lifecycle, maintaining operating assets, restoring deteriorated assets, and replacing…” Source: RevenueBase Database · checked Sep 15, 2026
16	Alsa Road Construction	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	51-200	39 contacts →
	Indirect evidence “As the largest independent road construction company in Calgary, Alsa is regarded as a premium road building contractor.” Source: RevenueBase Database · checked Sep 15, 2026
17	Trisummit Utilities	Indirect evidence	Calgary, CanadaHQ checked Sep 15, 2026	201-500	37 contacts →
	Indirect evidence “TriSummit Utilities owns and operates assets with low-risk stable earnings and cash flow.” Source: RevenueBase Database · checked Sep 15, 2026
18	Vault Group	Strong evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	51-200	35 contacts →
	Strong evidence “Vault is a Canadian-owned construction contractor executing industrial projects across infrastructure, midstream, mining, renewable energy, and water sectors, while also…” Source: RevenueBase Database · checked Sep 15, 2026
19	Pengcorp LTD	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	11-50	33 contacts →
	Indirect evidence “Pengcorp is a consortium of highly dedicated and talented engineers providing specialized services to industrial enterprises through out the regions of North and South America.” Source: RevenueBase Database · checked Sep 15, 2026
20	Amped Energy Services	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	201-500	29 contacts →
	Indirect evidence “Amped provides exceptional, reliable, and innovative solutions to the energy industry.” Source: RevenueBase Database · checked Sep 15, 2026
21	Lex3 Engineering	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	11-50	28 contacts →
	Indirect evidence “Building great connections-in our work, our teams, and our communities.” Source: RevenueBase Database · checked Sep 15, 2026
22	PTL Group	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	11-50	27 contacts →
	Indirect evidence “PTL was founded on the key principal of providing our clients the best service and best value.” Source: RevenueBase Database · checked Sep 15, 2026
23	Broadbill Energy INC	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	11-50	26 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 15, 2026
24	Newhook Trenching LTD	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	51-200	26 contacts →
	Indirect evidence “About Newhook Trenching Ltd.” Source: RevenueBase Database · checked Sep 15, 2026
25	Polaris Engineering LTD	Strong evidence	Calgary, AB, CanadaHQ checked Sep 15, 2026	11-50	24 contacts →
	Strong evidence “Polaris Engineering supports energy, industrial and infrastructure projects from early concept through to commissioning.” Source: RevenueBase Database · checked Sep 15, 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: infrastructure 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 infrastructure companies.
Partial evidence: Its own public description names part of infrastructure companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure 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 81 infrastructure companies based in Calgary, Canada

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Infrastructure companies based in Calgary, Canada at a glance

As of Sep 15, 2026

45.2%Verified-email coverage

118.0Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · Calgary

Sep 15, 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 across the whole Canada list rather than for Calgary, so it is reported there. Company counts and contact totals on this page are exact for Calgary, over 81 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 infrastructure 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 Calgary, Canada whose own description of what they do matches “infrastructure 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 infrastructure 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 infrastructure companies, and records with no verified work email. Companies headquartered outside Calgary 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, 4,316 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 15, 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.

Infrastructure 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 infrastructure 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 infrastructure companies are there based in Calgary, Canada?

RevenueBase identified 81 infrastructure companies headquartered in Calgary, 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?

Enerflex LTD, headquartered in Calgary, tops this list with the largest team on record.

Which city has the most infrastructure companies?

Calgary leads with 81 headquartered companies, followed by Toronto (57) and Edmonton (43).

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 4,316 verified decision-maker contacts tracked across these 81 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 15, 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.