Company lists · Data refreshed September 2026

Top 25 Grid integration technology providers based in the United States

Name: Grid integration technology providers 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 499 companies tracked

RevenueBase identified 499 grid integration technology providers headquartered in the United States as of September 2026 and tracks 26,165 professional contacts across them, including 11,026 with verified work emails. Houston is the largest hub.

This list covers grid integration technology providers 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

499Companies

26,165Contacts tracked

11,026Verified emails

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The 25 largest grid integration technology providers based in the United States

Ranked by team size

Top 25 of 499 grid integration technology providers 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 integration technology providers: 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	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
2	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
3	Fluence	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,863 contacts →
	Indirect evidence “To achieve our mission, we design, deploy, and operate the world’s most advanced modular energy storage products, comprehensive lifecycle services, and AI-enabled asset management…” Source: RevenueBase Database · checked Sep 20, 2026
4	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
5	Rehlko	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 20, 2026	5,001-10,000	1,709 contacts →
	Indirect evidence “Rehlko is a global leader in energy resilience, delivering the solutions critical to sustain and improve life.” Source: RevenueBase Database · checked Sep 20, 2026
6	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
7	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
8	Uplight	Strong evidence	Boulder, CO, United StatesHQ checked Sep 20, 2026	501-1,000	472 contacts →
	Strong evidence “Uplight is a clean energy technology company that unlocks grid capacity by activating customers and their connected devices to generate, shift, and save energy.” Source: RevenueBase Database · checked Sep 20, 2026
9	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
10	Stem, INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	501-1,000	417 contacts →
	Partial evidence “At Stem, we’re reimagining technology to drive the energy transition.” Source: RevenueBase Database · checked Sep 20, 2026
11	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
12	AMSC	Partial evidence	Ayer, MA, United StatesHQ checked Sep 20, 2026	201-500	334 contacts →
	Partial 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
13	SMA America	Partial evidence	Rocklin, CA, United StatesHQ checked Sep 20, 2026	201-500	332 contacts →
	Partial evidence “Innovative and sustainable key technologies are prerequisites for renewable energy supply.” Source: RevenueBase Database · checked Sep 20, 2026
14	Bidgely	Indirect evidence	Mountain View, CA, United StatesHQ checked Sep 20, 2026	51-200	306 contacts →
	Indirect evidence “Bidgely is the indispensable innovation partner for UtilityAI.” Source: RevenueBase Database · checked Sep 20, 2026
15	Flexgen	Indirect evidence	Durham, NC, United StatesHQ checked Sep 20, 2026	201-500	271 contacts →
	Indirect evidence “FlexGen delivers the best integrated energy storage systems by taking a functionality and software-first approach.” Source: RevenueBase Database · checked Sep 20, 2026
16	Energyhub	Partial evidence	Brooklyn, NY, United StatesHQ checked Sep 20, 2026	51-200	250 contacts →
	Partial evidence “EnergyHub is a software technology company based in New York, NY.” Source: RevenueBase Database · checked Sep 20, 2026
17	POWIN	Indirect evidence	Tualatin, OR, United StatesHQ checked Sep 20, 2026	501-1,000	242 contacts →
	Indirect evidence “Since 2010, Powin has been working to mitigate the economic and environmental impacts of climate change by revolutionizing the way energy is generated, transmitted, and…” Source: RevenueBase Database · checked Sep 20, 2026
18	Origis Energy	Indirect evidence	Miami, FL, United StatesHQ checked Sep 20, 2026	201-500	220 contacts →
	Indirect evidence “Origis Energy is accelerating the transition to a carbon-free future by Reimagining ZeroSM.” Source: RevenueBase Database · checked Sep 20, 2026
19	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
20	Tantalus Systems	Strong evidence	Raleigh, NC, United StatesHQ checked Sep 20, 2026	201-500	176 contacts →
	Strong 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
21	Catalyze	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	51-200	156 contacts →
	Indirect evidence “Founded in 2017, Catalyze is a fully integrated developer and Independent Power Producer (IPP) of distributed renewable energy assets.” Source: RevenueBase Database · checked Sep 20, 2026
22	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
23	KEY Capture Energy	Partial evidence	Albany, NY, United StatesHQ checked Sep 20, 2026	51-200	114 contacts →
	Partial evidence “Key Capture Energy identifies, develops, constructs and operates energy storage solutions to foster greater deployment of renewable energy, create a more stable electric grid, and…” Source: RevenueBase Database · checked Sep 20, 2026
24	Emerson Ovation Automation Platform	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 20, 2026	10001+	107 contacts →
	Indirect evidence “Explore the ways the Ovation™ Automation Platform and Ovation Green renewable solutions remove data silos to provide a holistic operational view that helps utilities meet the…” Source: RevenueBase Database · checked Sep 20, 2026
25	SENSE	Indirect evidence	Cambridge, MA, United StatesHQ checked Sep 20, 2026	51-200	106 contacts →
	Indirect evidence “Sense is making the energy transition accessible for everyone.” 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 integration technology providers. 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 integration technology providers.
Partial evidence: Its own public description names part of grid integration technology providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grid integration technology providers. 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 499 grid integration technology providers based in the United States

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Grid integration technology providers based in the United States at a glance

As of Sep 20, 2026

42.1%Verified-email coverage

52.4Average contacts per company

11-50Median size (employees)

3.6%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

200

11-50

162

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 499 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 integration technology providers, 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 integration technology providers”. 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 integration technology providers), 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 integration technology providers, 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, 11,026 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 integration technology providers, 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 integration technology providers are there based in the United States?

RevenueBase identified 499 grid integration technology providers 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?

Hubbell Incorporated, headquartered in Shelton, tops this list with the largest team on record.

Which city has the most grid integration technology providers?

Houston leads with 18 headquartered companies, followed by San Francisco (18) and Austin (11).

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 11,026 verified decision-maker contacts tracked across these 499 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.