Company lists · Data refreshed September 2026
Top 25 Connected infrastructure companies based in the United States
RevenueBase identified 426 connected infrastructure companies headquartered in the United States as of September 2026 and tracks 36,146 professional contacts across them, including 18,079 with verified work emails. Houston is the largest hub.
This list covers connected infrastructure companies headquartered in the United States, 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.
The 25 largest connected infrastructure companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 13,641 contacts → | ||||
Partial evidence “Equinix (Nasdaq: EQIX) is the world’s digital infrastructure company®, enabling digital leaders to harness a trusted platform to bring together and interconnect the foundational…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,067 contacts → | ||||
Strong evidence “As a global engineering firm, we design infrastructure solutions that connect and elevate communities.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,761 contacts → | ||||
Indirect evidence “M.C.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 938 contacts → | ||||
Partial evidence “Sensus, a Xylem brand, helps a wide range of public service providers – from utilities to cities to industrial complexes and campuses – do more with their infrastructure to…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 765 contacts → | ||||
Partial evidence “Founded in 2013, ITG is a national provider of end-to-end digital infrastructure services delivered through a turnkey model.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 669 contacts → | ||||
Indirect evidence “Albireo Energy is a leading independent building controls and energy services provider recognized by customers for creating intelligent, high-performance buildings.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 530 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 470 contacts → | ||||
Indirect evidence “Since 1996, MSS has made thousands of facilities more efficient, comfortable, secure and reliable for owners, operators and occupiers across the Carolinas and throughout North…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 417 contacts → | ||||
Indirect evidence “Building Great Things.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 398 contacts → | ||||
Partial evidence “Energy Systems Group (ESG) is a leading provider of performance-driven energy and infrastructure solutions nationwide.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 393 contacts → | ||||
Indirect evidence “UMC helps clients solve the complex challenges of built environments and their systems.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 340 contacts → | ||||
Indirect evidence “Founded in Softdel (a UNIDEL company), is the intelligent automation partner for Industrial, Buildings, and Energy domains that understands your operational constraints and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 304 contacts → | ||||
Indirect evidence “From our beginning in 1962 as a small electrical maintenance company in downtown Indianapolis with a staff of three, ERMCO, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 260 contacts → | ||||
Partial evidence “In the past few years, the world has realized the importance of high-speed internet service and “being connected.” Most agree that connectivity is as vital as electricity and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 239 contacts → | ||||
Indirect evidence “Experitec has served the industry for over 100 years, partnering with its customers to gain competitive advantages and unlock the hidden potential in their facilities.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 208 contacts → | ||||
Indirect evidence “We keep the lights on, the gas flowing, and the people behind it all moving forward.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 208 contacts → | ||||
Indirect evidence “Rex Moore Group, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 205 contacts → | ||||
Partial evidence “Ubicquia revolutionizes critical infrastructure, transforming it into intelligent systems that drive energy efficiency, bolster grid resilience, and streamline operations for…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 193 contacts → | ||||
Indirect evidence “EMC manages and scales turnkey energy efficiency solutions for Fortune 500 clients across their North American portfolios.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 192 contacts → | ||||
Indirect evidence “KMC Controls is an independent American manufacturer of building automation and IoT solutions for system integrators, system distributors, IT providers, and OEM partners.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 188 contacts → | ||||
Partial evidence “Expanse Electrical Company is a premier provider of integrated electrical infrastructure, instrumentation and automation system solutions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 182 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 166 contacts → | ||||
Indirect evidence “Headquartered in Harrisburg, Pennsylvania, McClure Company is one of the mid-Atlantic's largest, fully integrated mechanical construction, engineering, maintenance and energy…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 164 contacts → | ||||
Indirect evidence “Syserco is an industry leader delivering Energy Management Solutions and Services to commercial and industrial facilities ranging from K-12 Schools, to High Rises, to…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 153 contacts → | ||||
Indirect evidence “SMC has been providing the industry's top products and services in Smart Automation, Robotics, Network and Physical Security, Electrical and Lighting Modernization, and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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: connected 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 connected infrastructure companies.
- Partial evidence
- Its own public description names part of connected infrastructure companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name connected 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 426 connected infrastructure companies based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 18,079 reachable decision-makers.
Free signup · no credit card
Connected infrastructure companies based in the United States at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 426 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 connected 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 the United States whose own description of what they do matches “connected 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 connected 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 connected infrastructure companies, and records with no verified work email. Companies headquartered outside United States 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, 18,079 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.
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 connected 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 connected infrastructure companies are there based in the United States?
RevenueBase identified 426 connected infrastructure companies headquartered in the United States 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?
Equinix, headquartered in Redwood City, tops this list with the largest team on record.
Which city has the most connected infrastructure companies?
Houston leads with 13 headquartered companies, followed by New York (13) and Chicago (8).
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 18,079 verified decision-maker contacts tracked across these 426 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.
Ready to reach these companies? Verified emails and direct dials for all 426 connected infrastructure companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Connected infrastructure companies by geography
- Connected infrastructure companies based in Australia
- Connected infrastructure companies based in Belgium
- Connected infrastructure companies based in Brazil
- Connected infrastructure companies based in Canada
- Connected infrastructure companies based in Colombia
- Connected infrastructure companies based in France
- Connected infrastructure companies based in Germany
- Connected infrastructure companies based in India
- Connected infrastructure companies based in Italy
- Connected infrastructure companies based in the Netherlands
- Connected infrastructure companies based in Poland
- Connected infrastructure companies based in Saudi Arabia
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Connected infrastructure companies based in Australia
- Connected infrastructure companies based in Belgium
- Connected infrastructure companies based in Brazil
- Connected infrastructure companies based in Canada
- Connected infrastructure companies based in Colombia
- Connected infrastructure companies based in France