Company lists · Data refreshed September 2026

Top 25 Grid balancing technology companies based in the United States

Name: Grid balancing technology 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 19, 2026 266 companies tracked

RevenueBase identified 266 grid balancing technology companies headquartered in the United States as of September 2026 and tracks 14,164 professional contacts across them, including 6,764 with verified work emails. Houston is the largest hub.

This list covers grid balancing technology 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

266Companies

14,164Contacts tracked

6,764Verified emails

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The 25 largest grid balancing technology companies based in the United States

Ranked by team size

Top 25 of 266 grid balancing technology 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 grid balancing technology 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	Fluence	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 19, 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 19, 2026
2	Rehlko	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 19, 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 19, 2026
3	Form Energy	Partial evidence	Somerville, MA, United StatesHQ checked Sep 19, 2026	501-1,000	807 contacts →
	Partial evidence “Form Energy is an American company driving innovation in energy technology and manufacturing.” Source: RevenueBase Database · checked Sep 19, 2026
4	Powersecure, INC	Indirect evidence	Durham, NC, United StatesHQ checked Sep 19, 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 19, 2026
5	Uplight	Strong evidence	Boulder, CO, United StatesHQ checked Sep 19, 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 19, 2026
6	Shoals Technologies Group	Partial evidence	Portland, TN, United StatesHQ checked Sep 19, 2026	1,001-5,000	305 contacts →
	Partial evidence “Shoals Technologies Group, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
7	MARA	Partial evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 19, 2026	51-200	279 contacts →
	Partial evidence “MARA (NASDAQ: MARA) deploys digital energy technologies to advance the world's energy systems.” Source: RevenueBase Database · checked Sep 19, 2026
8	Voltus	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	201-500	274 contacts →
	Partial evidence “Voltus is a leading DER technology platform and virtual power plant operator connecting distributed energy resources to electricity markets, delivering less expensive, more…” Source: RevenueBase Database · checked Sep 19, 2026
9	Flexgen	Indirect evidence	Durham, NC, United StatesHQ checked Sep 19, 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 19, 2026
10	Energyhub	Partial evidence	Brooklyn, NY, United StatesHQ checked Sep 19, 2026	51-200	250 contacts →
	Partial evidence “EnergyHub is a software technology company based in New York, NY.” Source: RevenueBase Database · checked Sep 19, 2026
11	Base Power Company	Indirect evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	201-500	248 contacts →
	Indirect evidence “Base is building the future of American power.” Source: RevenueBase Database · checked Sep 19, 2026
12	LG Energy Solution Vertech, INC	Indirect evidence	Westborough, MA, United StatesHQ checked Sep 19, 2026	51-200	244 contacts →
	Indirect evidence “LG Energy Solution Vertech, Inc.(LGES Vertech) delivers exceptional customer engagement throughout every stage of acquiring, installing, and operating advanced, reliable, and…” Source: RevenueBase Database · checked Sep 19, 2026
13	POWIN	Indirect evidence	Tualatin, OR, United StatesHQ checked Sep 19, 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 19, 2026
14	Energy Vault	Indirect evidence	Westlake Village, VA, United StatesHQ checked Sep 19, 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 19, 2026
15	Jupiter Power	Indirect evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	51-200	188 contacts →
	Indirect evidence “Jupiter Power is putting deep energy storage expertise, proven project execution capability, and significant capital to work to help make the energy transition a reality.” Source: RevenueBase Database · checked Sep 19, 2026
16	Plus Power	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	172 contacts →
	Indirect evidence “The Plus Power team, led by seasoned executives from the renewables and energy storage industry, is accelerating the deployment of transmission-connected battery storage…” Source: RevenueBase Database · checked Sep 19, 2026
17	Convergent Energy And Power	Partial evidence	New York, United StatesHQ checked Sep 19, 2026	51-200	143 contacts →
	Partial evidence “Convergent Energy and Power manages all aspects of energy storage development for its grid operator, utility, and industrial customers.” Source: RevenueBase Database · checked Sep 19, 2026
18	Lion Energy	Indirect evidence	American Fork, UT, United StatesHQ checked Sep 19, 2026	51-200	138 contacts →
	Indirect evidence “Lion Energy is building the future of intelligent energy infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
19	Esvolta, LP	Indirect evidence	Newport Beach, CA, United StatesHQ checked Sep 19, 2026	51-200	119 contacts →
	Indirect evidence “Focused on sustainability and innovation, esVolta develops, owns, and operates reliable utility-scale energy storage assets across the entire lifecycle - delivering value for…” Source: RevenueBase Database · checked Sep 19, 2026
20	KEY Capture Energy	Partial evidence	Albany, NY, United StatesHQ checked Sep 19, 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 19, 2026
21	Smart Wires INC	Strong evidence	Durham, NC, United StatesHQ checked Sep 19, 2026	51-200	105 contacts →
	Strong evidence “Smart Wires is the world’s leading grid enhancing technology and services provider.” Source: RevenueBase Database · checked Sep 19, 2026
22	Franklinwh Energy Storage INC	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 19, 2026	201-500	100 contacts →
	Indirect evidence “FranklinWH Energy Storage is the manufacturer of the FranklinWH System, a next-generation home energy management and storage solution.” Source: RevenueBase Database · checked Sep 19, 2026
23	Enervenue	Indirect evidence	Fremont, CA, United StatesHQ checked Sep 19, 2026	201-500	99 contacts →
	Indirect evidence “EnerVenue is commercializing energy storage systems designed to behave like infrastructure, prioritizing endurance, safety, and lifecycle economics over short-term optimization.” Source: RevenueBase Database · checked Sep 19, 2026
24	CABAN	Indirect evidence	Burlingame, CA, United StatesHQ checked Sep 19, 2026	201-500	92 contacts →
	Indirect evidence “Caban is accelerating the shift to sustainability for critical infrastructure operators by providing access to renewable power.” Source: RevenueBase Database · checked Sep 19, 2026
25	Linevision	Strong evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	51-200	89 contacts →
	Strong evidence “LineVision is a grid-enhancing technology company enabling electric utilities to deliver affordable, reliable power and accelerate the electrification of the global economy.” Source: RevenueBase Database · checked Sep 19, 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 balancing technology 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 balancing technology companies.
Partial evidence: Its own public description names part of grid balancing technology companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grid balancing technology 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 266 grid balancing technology companies based in the United States

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Grid balancing technology companies based in the United States at a glance

As of Sep 19, 2026

47.8%Verified-email coverage

53.2Average contacts per company

11-50Median size (employees)

6.4%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 266 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 balancing technology 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 balancing technology 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 balancing technology 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 balancing technology 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, 6,764 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 grid balancing technology 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 balancing technology companies are there based in the United States?

RevenueBase identified 266 grid balancing technology 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?

Fluence, headquartered in Arlington, tops this list with the largest team on record.

Which city has the most grid balancing technology companies?

Houston leads with 17 headquartered companies, followed by New York (13) and San Francisco (10).

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 6,764 verified decision-maker contacts tracked across these 266 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.