Company lists · Data refreshed September 2026

Top 25 Grid modernization companies based in the United States

Name: Grid modernization companies 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 367 companies tracked

RevenueBase identified 367 grid modernization companies headquartered in the United States as of September 2026 and tracks 45,744 professional contacts across them, including 17,206 with verified work emails. Houston is the largest hub.

This list covers grid modernization 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 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

367Companies

45,744Contacts tracked

17,206Verified emails

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

The 25 largest grid modernization companies based in the United States

Ranked by team size

Top 25 of 367 grid modernization companies 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 modernization 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	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	Toshiba	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 20, 2026	n/a	5,984 contacts →
	Indirect evidence “For 150 years, Toshiba has been engineering solutions that drive progress, empower industries, and create a more resilient future.” Source: RevenueBase Database · checked Sep 20, 2026
3	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
4	Generac	Indirect evidence	Waukesha, WI, United StatesHQ checked Sep 20, 2026	5,001-10,000	3,797 contacts →
	Indirect evidence “Generac is the total energy solutions company powering a smarter world.” Source: RevenueBase Database · checked Sep 20, 2026
5	Fieldcore	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	10001+	3,700 contacts →
	Indirect evidence “GE Vernova is a planned, purpose-built global energy company that includes Power, Wind, and Electrification businesses and is supported by its accelerator businesses of Advanced…” Source: RevenueBase Database · checked Sep 20, 2026
6	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
7	GE Digital	Indirect evidence	San Ramon, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,763 contacts →
	Indirect evidence “At GE Digital, our focus is clear: delivering software that accelerates a new era of energy.” Source: RevenueBase Database · checked Sep 20, 2026
8	Westwood Professional Services	Indirect evidence	Plano, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,661 contacts →
	Indirect evidence “At Westwood, our purpose is to create a better world for people through our work.” Source: RevenueBase Database · checked Sep 20, 2026
9	Electrical Consultants, INC	Indirect evidence	Billings, MT, United StatesHQ checked Sep 20, 2026	1,001-5,000	890 contacts →
	Indirect evidence “Electrical Consultants, Inc.(ECI) is an employee-owned, national provider of high voltage transmission, substation, and distribution solutions.” Source: RevenueBase Database · checked Sep 20, 2026
10	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
11	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
12	Delta Star, INC	Indirect evidence	Lynchburg, VA, United StatesHQ checked Sep 20, 2026	1,001-5,000	548 contacts →
	Indirect evidence “Delta Star is recognized as an industry leader in pursuit of continuously improving the performance, delivery and reliability of power to meet the energy needs of the future._…” Source: RevenueBase Database · checked Sep 20, 2026
13	Resa Power	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	511 contacts →
	Indirect evidence “RESA Power is your ONE-STOP for all of your power needs.” Source: RevenueBase Database · checked Sep 20, 2026
14	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
15	Noresco	Indirect evidence	Westborough, MA, United StatesHQ checked Sep 20, 2026	201-500	481 contacts →
	Indirect evidence “NORESCO, a part of Carrier Global Corporation, helps customers modernize aging building systems and upgrade energy and water infrastructure to meet evolving demands.” Source: RevenueBase Database · checked Sep 20, 2026
16	Babcock Power	Indirect evidence	Danvers, MA, United StatesHQ checked Sep 20, 2026	501-1,000	476 contacts →
	Indirect evidence “Finding a single capable partner to support both large- and small-scale power generation needs can be challenging.” Source: RevenueBase Database · checked Sep 20, 2026
17	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
18	K&a Power	Indirect evidence	Syracuse, NY, United StatesHQ checked Sep 20, 2026	201-500	410 contacts →
	Indirect evidence “K&A Power is a global energy infrastructure company focused on developing, engineering, delivering, and operating the critical systems that power modern economies.” Source: RevenueBase Database · checked Sep 20, 2026
19	Trilliant	Indirect evidence	Concord, NC, United StatesHQ checked Sep 20, 2026	201-500	384 contacts →
	Indirect evidence “Trilliant® empowers utilities and partners to accelerate the energy transition through a proven, modular, multi-technology communications platform that delivers secure, scalable…” Source: RevenueBase Database · checked Sep 20, 2026
20	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
21	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
22	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
23	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
24	Mosaic	Strong evidence	Renton, WA, United StatesHQ checked Sep 20, 2026	201-500	248 contacts →
	Strong 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
25	National Power	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 20, 2026	51-200	218 contacts →
	Indirect evidence “We Deliver Resilience and Reliability in Power and Infrastructure Solutions.” 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 modernization 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 grid modernization companies.
Partial evidence: Its own public description names part of grid modernization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grid modernization 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 367 grid modernization 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 17,206 reachable decision-makers.

Free signup · no credit card

View the full list →

Grid modernization companies based in the United States at a glance

As of Sep 20, 2026

37.6%Verified-email coverage

124.6Average contacts per company

11-50Median size (employees)

3.8%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

136

11-50

112

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 367 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 modernization 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 “grid modernization 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 grid modernization 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 grid modernization 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, 17,206 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 modernization 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 grid modernization companies are there based in the United States?

RevenueBase identified 367 grid modernization 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?

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

Which city has the most grid modernization companies?

Houston leads with 14 headquartered companies, followed by San Francisco (8) and New York (7).

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 17,206 verified decision-maker contacts tracked across these 367 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.

Ready to reach these companies? Verified emails and direct dials for all 367 grid modernization companies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Grid modernization companies 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.