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.

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
426Companies
36,146Contacts tracked
18,079Verified emails
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The 25 largest connected infrastructure companies based in the United States

Ranked by team size
Top 25 of 426 connected infrastructure companies based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to connected 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceRedwood City, CA, United StatesHQ checked Sep 19, 202610001+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, 2026
2Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 19, 20261,001-5,0003,067 contacts →

Strong evidence

“As a global engineering firm, we design infrastructure solutions that connect and elevate communities.”

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceTysons, VA, United StatesHQ checked Sep 19, 20265,001-10,0002,761 contacts →

Indirect evidence

“M.C.”

Source: RevenueBase Database · checked Sep 19, 2026
4Partial evidenceMorrisville, NC, United StatesHQ checked Sep 19, 20261,001-5,000938 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, 2026
5Partial evidenceFort Lauderdale, FL, United StatesHQ checked Sep 19, 20261,001-5,000765 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, 2026
6Indirect evidenceEdison, NJ, United StatesHQ checked Sep 19, 20261,001-5,000669 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, 2026
7Indirect evidenceAustin, TX, United StatesHQ checked Sep 19, 2026201-500530 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceCharlotte, NC, United StatesHQ checked Sep 19, 2026501-1,000470 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, 2026
9Indirect evidenceGrapevine, TX, United StatesHQ checked Sep 19, 20261,001-5,000417 contacts →

Indirect evidence

“Building Great Things.”

Source: RevenueBase Database · checked Sep 19, 2026
10Partial evidenceNewburgh, IN, United StatesHQ checked Sep 19, 2026201-500398 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, 2026
11Indirect evidenceLynnwood, WA, United StatesHQ checked Sep 19, 2026201-500393 contacts →

Indirect evidence

“UMC helps clients solve the complex challenges of built environments and their systems.”

Source: RevenueBase Database · checked Sep 19, 2026
12Indirect evidenceStamford, CT, United StatesHQ checked Sep 19, 2026201-500340 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, 2026
13Indirect evidenceGreenwood, IN, United StatesHQ checked Sep 19, 2026201-500304 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, 2026
14Partial evidenceCarlstadt, NJ, United StatesHQ checked Sep 19, 2026201-500260 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, 2026
15Indirect evidenceChesterfield, MO, United StatesHQ checked Sep 19, 2026201-500239 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, 2026
16Indirect evidencePhoenix, AZ, United StatesHQ checked Sep 19, 202610001+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, 2026
17Indirect evidenceSacramento, CA, United StatesHQ checked Sep 19, 2026501-1,000208 contacts →

Indirect evidence

“Rex Moore Group, Inc.”

Source: RevenueBase Database · checked Sep 19, 2026
18Partial evidenceFort Lauderdale, FL, United StatesHQ checked Sep 19, 202651-200205 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, 2026
19Indirect evidenceMinneapolis, MN, United StatesHQ checked Sep 19, 2026201-500193 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, 2026
20Indirect evidenceNew Paris, IN, United StatesHQ checked Sep 19, 202651-200192 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, 2026
21Partial evidenceHouston, TX, United StatesHQ checked Sep 19, 2026501-1,000188 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, 2026
22Indirect evidenceReston, VA, United StatesHQ checked Sep 19, 2026n/a182 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
23Indirect evidenceHarrisburg, PA, United StatesHQ checked Sep 19, 2026201-500166 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, 2026
24Indirect evidenceFremont, CA, United StatesHQ checked Sep 19, 202651-200164 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, 2026
25Indirect evidenceSpringfield, MO, United StatesHQ checked Sep 19, 2026501-1,000153 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, 2026

Showing 25 of 426 connected infrastructure companies based in the United States

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Connected infrastructure companies based in the United States at a glance

As of Sep 19, 2026
50.0%Verified-email coverage
84.8Average contacts per company
11-50Median size (employees)
3.1%Largest-city concentration · Houston
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
113
11-50
168
51-200
88
201-500
28
501-1,000
10
1,001-5,000
11
5,001-10,000
1
10001+
6

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.

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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.