Company lists · Data refreshed September 2026

Top 25 Grid management and integration firms based in the United States

Name: Grid management and integration firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 487 companies tracked

RevenueBase identified 487 grid management and integration firms headquartered in the United States as of September 2026 and tracks 28,006 professional contacts across them, including 11,409 with verified work emails. Houston is the largest hub.

This list covers grid management and integration firms 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 20, 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 20, 2026 86% judged on-target in blind review

487Companies

28,006Contacts tracked

11,409Verified emails

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The 25 largest grid management and integration firms based in the United States

Ranked by team size

Top 25 of 487 grid management and integration firms based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to grid management and integration firms: 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	Schweitzer Engineering Laboratories SEL	Indirect evidence	Pullman, WA, United StatesHQ checked Sep 20, 2026	5,001-10,000	6,489 contacts →
	Indirect evidence “SEL is a globally recognized designer and manufacturer of products and solutions that make electric power safer, more reliable, and more economical.” Source: RevenueBase Database · checked Sep 20, 2026
2	Hubbell Incorporated	Indirect evidence	Shelton, CT, United StatesHQ checked Sep 20, 2026	10001+	4,053 contacts →
	Indirect evidence “Hubbell Incorporated is a leading manufacturer of utility and electrical solutions that help build more reliable, resilient, and renewable energy infrastructure.” Source: RevenueBase Database · checked Sep 20, 2026
3	S&c Electric Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,465 contacts →
	Partial evidence “S&C is empowering people to transform the grid.” Source: RevenueBase Database · checked Sep 20, 2026
4	Powersecure, INC	Indirect evidence	Durham, NC, United StatesHQ checked Sep 20, 2026	501-1,000	740 contacts →
	Indirect evidence “PowerSecure, a Southern Company subsidiary, is a leading provider of innovative energy solutions to electric utilities and their industrial, institutional, and commercial…” Source: RevenueBase Database · checked Sep 20, 2026
5	Electric Power Engineers	Partial evidence	Austin, TX, United StatesHQ checked Sep 20, 2026	501-1,000	630 contacts →
	Partial evidence “Electric Power Engineers (EPE) is a global advisory and engineering firm advancing grid reliability, resilience, flexibility, and affordability.” Source: RevenueBase Database · checked Sep 20, 2026
6	Saber Power	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	521 contacts →
	Indirect evidence “Saber Power Services, a portfolio company of Greenbelt Capital Partners, is a fully integrated electrical power system services firm providing end-to-end solutions across utility…” Source: RevenueBase Database · checked Sep 20, 2026
7	Qualitrol	Partial evidence	Fairport, NY, United StatesHQ checked Sep 20, 2026	501-1,000	494 contacts →
	Partial evidence “Qualitrol is a global leader in electrical grid monitoring solutions for businesses that manage, operate, or support the power grid.” Source: RevenueBase Database · checked Sep 20, 2026
8	Open Systems International	Indirect evidence	Bedford, MA, United StatesHQ checked Sep 20, 2026	1,001-5,000	422 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
9	PCI Energy Solutions	Indirect evidence	Norman, OK, United StatesHQ checked Sep 20, 2026	201-500	346 contacts →
	Indirect evidence “PCIEnergySolutions is a tight-knit team of 300 diligent product experts, engineers, business analysts, and more.” Source: RevenueBase Database · checked Sep 20, 2026
10	AMSC	Indirect evidence	Ayer, MA, United StatesHQ checked Sep 20, 2026	201-500	334 contacts →
	Indirect evidence “AMSC (NASDAQ: AMSC) generates the ideas, technologies and solutions that meet the world’s demand for smarter, cleaner … better energy.” Source: RevenueBase Database · checked Sep 20, 2026
11	Asplundh Engineering Services	Indirect evidence	Willow Grove, PA, United StatesHQ checked Sep 20, 2026	1,001-5,000	284 contacts →
	Indirect evidence “Asplundh Engineering Services leverages more than 100 years of experience to provide a superior, single-point solution for engineering, design and testing services to…” Source: RevenueBase Database · checked Sep 20, 2026
12	Base Power Company	Indirect evidence	Austin, TX, United StatesHQ checked Sep 20, 2026	201-500	248 contacts →
	Indirect evidence “Base is building the future of American power.” Source: RevenueBase Database · checked Sep 20, 2026
13	Mosaic	Partial evidence	Renton, WA, United StatesHQ checked Sep 20, 2026	201-500	248 contacts →
	Partial evidence “Mosaic is a consulting firm that delivers custom solutions across the energy, utility, grid operations, and grid modernization space.” Source: RevenueBase Database · checked Sep 20, 2026
14	Systems Control	Indirect evidence	Iron Mountain, MI, United StatesHQ checked Sep 20, 2026	501-1,000	240 contacts →
	Indirect evidence “Systems Control, a Hubbell brand, designs and manufactures turnkey control systems and control relays that are involved in the protection and control of transmission and…” Source: RevenueBase Database · checked Sep 20, 2026
15	Maverick Power	Indirect evidence	Mckinney, TX, United StatesHQ checked Sep 20, 2026	201-500	205 contacts →
	Indirect evidence “At Maverick Power, we are revolutionizing power solutions for businesses with a strong commitment to innovation, efficiency, and reliability.” Source: RevenueBase Database · checked Sep 20, 2026
16	Energy Vault	Indirect evidence	Westlake Village, VA, United StatesHQ checked Sep 20, 2026	51-200	203 contacts →
	Indirect evidence “Energy Vault® is an integrated power infrastructure platform that builds, owns and operates flexible, reliable energy systems to accelerate time-to-power for utilities…” Source: RevenueBase Database · checked Sep 20, 2026
17	Expanse Electrical CO	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	501-1,000	188 contacts →
	Indirect evidence “Expanse Electrical Company is a premier provider of integrated electrical infrastructure, instrumentation and automation system solutions.” Source: RevenueBase Database · checked Sep 20, 2026
18	Dynalectric Oregon	Indirect evidence	Portland, OR, United StatesHQ checked Sep 20, 2026	501-1,000	179 contacts →
	Indirect evidence “The Oregon division of Dynalectric Company (Dynalectric Oregon) has served the specialized electrical needs of the Pacific Northwest for decades.” Source: RevenueBase Database · checked Sep 20, 2026
19	Tantalus Systems	Partial evidence	Raleigh, NC, United StatesHQ checked Sep 20, 2026	201-500	176 contacts →
	Partial evidence “About Tantalus Systems Holding Inc.(TSX: GRID; OTCQX: TGMPF) Tantalus is a technology company dedicated to helping utilities modernize their distribution grids by harnessing the…” Source: RevenueBase Database · checked Sep 20, 2026
20	Power Grid Engineering, LLC	Partial evidence	Lake Mary, FL, United StatesHQ checked Sep 20, 2026	1,001-5,000	160 contacts →
	Partial evidence “Qualus is a leading pure-play power services firm and innovator at the forefront of the energy transition and transformation, with differentiated capabilities across grid…” Source: RevenueBase Database · checked Sep 20, 2026
21	Novatech Automation	Indirect evidence	Lenexa, KS, United StatesHQ checked Sep 20, 2026	51-200	153 contacts →
	Indirect evidence “NovaTech Automation produces the easiest to use and best supported automation products and solutions for electric utilities.” Source: RevenueBase Database · checked Sep 20, 2026
22	Cleaveland Price INC	Indirect evidence	Trafford, PA, United StatesHQ checked Sep 20, 2026	201-500	145 contacts →
	Indirect evidence “Cleaveland/Price is a engineering/manufacturing firm serving the needs of the electric power industry.” Source: RevenueBase Database · checked Sep 20, 2026
23	Gridware	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	51-200	139 contacts →
	Partial evidence “Gridware is a technology company focused on protecting and enhancing the electrical grid.” Source: RevenueBase Database · checked Sep 20, 2026
24	Hico America	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 20, 2026	1,001-5,000	137 contacts →
	Indirect evidence “HICO America is the North American headquarters for the HICO family of companies, delivering the infrastructure behind today's most ambitious energy projects.” Source: RevenueBase Database · checked Sep 20, 2026
25	Estudios Eléctricos	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 20, 2026	51-200	126 contacts →
	Indirect evidence “Estudios Eléctricos is a power systems consulting firm focused on delivering solutions to electricity market agents: generators, transmission and distribution companies, and large…” Source: RevenueBase Database · checked Sep 20, 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: grid management and integration firms. 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 grid management and integration firms.
Partial evidence: Its own public description names part of grid management and integration firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grid management and integration firms. 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 487 grid management and integration firms based in the United States

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Grid management and integration firms based in the United States at a glance

As of Sep 20, 2026

40.7%Verified-email coverage

57.5Average contacts per company

11-50Median size (employees)

2.9%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

201

11-50

154

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 487 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 grid management and integration firms, 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 “grid management and integration firms”. 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 grid management and integration firms), 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 grid management and integration firms, 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, 11,409 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 20, 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 grid management and integration firms, 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 grid management and integration firms are there based in the United States?

RevenueBase identified 487 grid management and integration firms 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?

Schweitzer Engineering Laboratories SEL, headquartered in Pullman, tops this list with the largest team on record.

Which city has the most grid management and integration firms?

Houston leads with 14 headquartered companies, followed by Chicago (8) and New York (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 11,409 verified decision-maker contacts tracked across these 487 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 20, 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.