Company lists · Data refreshed September 2026

Top 25 Grid integration companies worldwide

Name: Grid integration companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 7,841 companies tracked

RevenueBase identified 7,841 grid integration companies worldwide as of September 2026 and tracks 157,173 professional contacts across them, including 41,599 with verified work emails. The United States is the largest market and London the largest hub.

This list covers grid integration companies worldwide, 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. Country and city lists for grid integration companies follow the table.

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

7,841Companies

157,173Contacts tracked

41,599Verified emails

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The 25 largest grid integration companies worldwide

Ranked by team size

Top 25 of 7,841 grid integration companies worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to grid integration 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	Tata Power	Indirect evidence	Mumbai, IndiaHQ checked Sep 20, 2026	10001+	9,414 contacts →
	Indirect evidence “Tata Power is one of India’s largest integrated power companies and together with its subsidiaries and jointly controlled entities, has an installed/managed capacity of 14,294 MW.” Source: RevenueBase Database · checked Sep 20, 2026
2	Landis GYR	Partial evidence	Cham, SwitzerlandHQ checked Sep 20, 2026	5,001-10,000	4,252 contacts →
	Partial evidence “Landis+Gyr is a global energy technology leader delivering intelligent solutions that connect devices, data, and decisions across the grid.” 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	KENTZ	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 20, 2026	10001+	3,987 contacts →
	Indirect evidence “Following the acquisition of SNC-Lavalin's oil and gas division, Kentz has become a part of Kent.” Source: RevenueBase Database · checked Sep 20, 2026
5	FTI	Indirect evidence	Menasha, WI, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,741 contacts →
	Indirect evidence “Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Source: RevenueBase Database · checked Sep 20, 2026
6	Innio Group	Indirect evidence	Munich, GermanyHQ checked Sep 20, 2026	1,001-5,000	2,111 contacts →
	Indirect evidence “INNIO Group is a global distributed energy solutions provider that delivers reliable, flexible, transient, decentralized, modular and efficient power.” Source: RevenueBase Database · checked Sep 20, 2026
7	Areva T&d	Indirect evidence	92084 Paris - La Défense, FranceHQ checked Sep 20, 2026	10001+	2,012 contacts →
	Indirect evidence “One of the top three global players in the transmission and distribution of energy, AREVA T&D offers solutions to bring electricity from the source onto the power network.” Source: RevenueBase Database · checked Sep 20, 2026
8	Omexom	Indirect evidence	Nanterre, FranceHQ checked Sep 20, 2026	5,001-10,000	1,903 contacts →
	Indirect evidence “With today's global energy sector undergoing constant change, Omexom works with its clients in delivering on the promises of the energy transition.” Source: RevenueBase Database · checked Sep 20, 2026
9	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
10	CHINT	Indirect evidence	Shanghai, ChinaHQ checked Sep 20, 2026	10001+	1,852 contacts →
	Indirect evidence “CHINT is a global leader in smart energy solutions, delivering efficient and sustainable power for industries, infrastructure, and communities worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
11	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
12	KK Wind Solutions	Indirect evidence	Ikast, DenmarkHQ checked Sep 20, 2026	1,001-5,000	1,423 contacts →
	Indirect evidence “KK Wind Solutions is a dedicated greentech company with more than 35 years of experience in electrical systems for wind turbines.” Source: RevenueBase Database · checked Sep 20, 2026
13	Ormazabal	Partial evidence	Derio, SpainHQ checked Sep 20, 2026	1,001-5,000	1,014 contacts →
	Partial evidence “We are experts in customized and high-tech electrical solutions for your challenges At Ormazabal we design and manufacture solutions aimed at digitalizing the electrical grid to…” Source: RevenueBase Database · checked Sep 20, 2026
14	Wärtsilä Energy	Indirect evidence	Helsinki, FinlandHQ checked Sep 20, 2026	10001+	940 contacts →
	Indirect evidence “Wärtsilä leads the transition towards a 100% renewable energy future.” Source: RevenueBase Database · checked Sep 20, 2026
15	CJR Renewables	Indirect evidence	Matosinhos, PortugalHQ checked Sep 20, 2026	1,001-5,000	816 contacts →
	Indirect evidence “CJR Renewables: EPC/BOP/BOS integrated services provider for wind farms and solar plants.” Source: RevenueBase Database · checked Sep 20, 2026
16	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
17	EWZ	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	1,001-5,000	721 contacts →
	Indirect evidence “Unsere Erfolgsgeschichte begann mit einer aufsehenerregenden Pioniertat: Im Jahr 1892 floss in der Stadt Zürich erstmals elektrischer Strom.” Source: RevenueBase Database · checked Sep 20, 2026
18	ALFEN	Indirect evidence	Almere, NetherlandsHQ checked Sep 20, 2026	501-1,000	678 contacts →
	Indirect evidence “With transformer substations, energy storage systems, charging stations for electric vehicles and a diverse portfolio of other products and services, Alfen has a central and…” Source: RevenueBase Database · checked Sep 20, 2026
19	Vikran Engineering LTD	Indirect evidence	Thane, IndiaHQ checked Sep 20, 2026	501-1,000	661 contacts →
	Indirect evidence “M/s VIKRAN Engineering Ltd is a reputed and established engineering company specializing in providing comprehensive solutions in the fields of renewable energy, engineering…” Source: RevenueBase Database · checked Sep 20, 2026
20	Apraava Energy	Indirect evidence	Mumbai, IndiaHQ checked Sep 20, 2026	501-1,000	657 contacts →
	Indirect evidence “Apraava Energy is India’s leading integrated energy solutions provider headquartered in Mumbai.” Source: RevenueBase Database · checked Sep 20, 2026
21	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
22	Kaluza	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	595 contacts →
	Indirect evidence “Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination.” Source: RevenueBase Database · checked Sep 20, 2026
23	Erco Energía	Indirect evidence	Medellín, ColombiaHQ checked Sep 20, 2026	201-500	555 contacts →
	Indirect evidence “Contamos con un portafolio de soluciones y servicios que impactan la cadena completa de la energía, como la construcción de proyectos de energía solar, de infraestructura de carga…” Source: RevenueBase Database · checked Sep 20, 2026
24	Grupotec	Indirect evidence	Valencia, SpainHQ checked Sep 20, 2026	501-1,000	538 contacts →
	Indirect evidence “GRUPOTEC - Empresa multidisciplinar de ingeniería y arquitectura y líder en el sector de la energía fotovoltaica.” Source: RevenueBase Database · checked Sep 20, 2026
25	JOULZ	Indirect evidence	Zoetermeer, NetherlandsHQ checked Sep 20, 2026	201-500	525 contacts →
	Indirect evidence “De energietransitie stelt bedrijven en instellingen voor toenemende uitdagingen.” 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 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 integration companies.
Partial evidence: Its own public description names part of grid integration companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grid integration 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 7,841 grid integration companies worldwide

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Grid integration companies worldwide at a glance

As of Sep 20, 2026

26.5%Verified-email coverage

20.0Average contacts per company

11-50Median size (employees)

0.7%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

3,738

11-50

2,821

51-200

866

201-500

210

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 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.
Coverage: Every country. Country and city lists for grid integration companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “grid integration 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 integration 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 integration companies, and records with no verified work email.
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, 41,599 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.

Grid integration companies by location

36 lists · largest first

Every Grid integration companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 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 integration companies are there worldwide?

RevenueBase identified 7,841 grid integration companies worldwide 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?

Tata Power, headquartered in Mumbai, tops this list with the largest team on record.

Which country has the most grid integration companies?

The United States leads with 682 companies, followed by Germany (600) and India (572). Every grid integration companies list by country and city is linked on this page.

Which city has the most grid integration companies?

London leads with 57 headquartered companies, followed by Ankara (56) and Sao Paulo (56).

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 41,599 verified decision-maker contacts tracked across these 7,841 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.