Company lists · Data refreshed September 2026

Top 25 Grid integration consultants worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 12,826 companies tracked

RevenueBase identified 12,826 grid integration consultants worldwide as of September 2026 and tracks 146,338 professional contacts across them, including 42,119 with verified work emails. The United States is the largest market and Madrid the largest hub.

This list covers grid integration consultants 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 consultants 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

12,826Companies

146,338Contacts tracked

42,119Verified emails

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The 25 largest grid integration consultants worldwide

Ranked by team size

Top 25 of 12,826 grid integration consultants 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 consultants: 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	Entrust Solutions Group	Indirect evidence	Lisle, IL, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,966 contacts →
	Indirect evidence “ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…” Source: RevenueBase Database · checked Sep 20, 2026
2	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
3	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
4	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
5	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
6	Steag Energy Services India Pvt. LTD	Indirect evidence	Noida, IndiaHQ checked Sep 20, 2026	1,001-5,000	1,572 contacts →
	Indirect evidence “STEAG Energy Services India, established in 2001 as a wholly owned subsidiary of STEAG GmbH, Germany, is now part of the Bluspring Enterprises Limited, India’s integrated…” Source: RevenueBase Database · checked Sep 20, 2026
7	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
8	Penspen	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	1,007 contacts →
	Indirect evidence “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
9	Willdan	Indirect evidence	Anaheim, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	851 contacts →
	Indirect evidence “Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.” Source: RevenueBase Database · checked Sep 20, 2026
10	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
11	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
12	WTS Energy	Indirect evidence	The Hague, NetherlandsHQ checked Sep 20, 2026	1,001-5,000	651 contacts →
	Indirect evidence “The Energy Transition brings new challenges and opportunities to all of us.” Source: RevenueBase Database · checked Sep 20, 2026
13	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
14	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
15	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
16	Elnetselskabet N1	Indirect evidence	Esbjerg N, DenmarkHQ checked Sep 20, 2026	501-1,000	504 contacts →
	Indirect evidence “Hos N1 er vi dem, der kæmper for at tilføre elnettet ny energi.” Source: RevenueBase Database · checked Sep 20, 2026
17	Revergy	Indirect evidence	Seville, SpainHQ checked Sep 20, 2026	501-1,000	502 contacts →
	Indirect evidence “REVERGY nace mediante un proyecto de profesionales procedentes de diferentes ámbitos del sector de las energías renovables con el fin de presentar un proyecto marcado por la…” Source: RevenueBase Database · checked Sep 20, 2026
18	Natural Power	Partial evidence	Castle Douglas, United KingdomHQ checked Sep 20, 2026	501-1,000	500 contacts →
	Partial evidence “Natural Power is a leading independent consultancy and service provider for the renewable energy sector.” Source: RevenueBase Database · checked Sep 20, 2026
19	RRC Companies	Indirect evidence	Round Rock, TX, United StatesHQ checked Sep 20, 2026	201-500	494 contacts →
	Indirect evidence “RRC is a top-tier designer of utility-scale wind, solar, energy storage, data center, and oil & gas projects in the US and select international markets.” Source: RevenueBase Database · checked Sep 20, 2026
20	Amara Nzero Brasil	Indirect evidence	Salvador, BrazilHQ checked Sep 20, 2026	501-1,000	493 contacts →
	Indirect evidence “Somos uma empresa com uma grande experiência integral em energia sustentável fortemente comprometida com a Transição Energética.” Source: RevenueBase Database · checked Sep 20, 2026
21	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
22	3e Engenharia EM Eficiencia Energetica	Indirect evidence	BrazilHQ checked Sep 20, 2026	201-500	473 contacts →
	Indirect evidence “A 3E Engenharia atua nacionalmente, oferecendo soluções para empresas concessionárias de serviços públicos, no planejamento, gestão, execução e inovação em projetos de Eficiência…” Source: RevenueBase Database · checked Sep 20, 2026
23	Borea Construction	Indirect evidence	Lévis, QC, CanadaHQ checked Sep 20, 2026	201-500	455 contacts →
	Indirect evidence “Borea Construction est le leader nord-américain dans la construction d'énergie renouvelable.” Source: RevenueBase Database · checked Sep 20, 2026
24	Cotesa Engenharia	Indirect evidence	Florianópolis, BrazilHQ checked Sep 20, 2026	201-500	449 contacts →
	Indirect evidence “A COTESA é especialista na Engenharia de Operação & Manutenção de ativos elétricos de Geração e Transmissão de energia.” Source: RevenueBase Database · checked Sep 20, 2026
25	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

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 consultants. 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 consultants.
Partial evidence: Its own public description names part of grid integration consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grid integration consultants. 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 12,826 grid integration consultants worldwide

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Grid integration consultants worldwide at a glance

As of Sep 20, 2026

28.8%Verified-email coverage

11.4Average contacts per company

1-10Median size (employees)

0.9%Largest-city concentration · Madrid

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

7,186

11-50

4,134

51-200

1,050

201-500

250

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 consultants, 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 consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “grid integration consultants”. 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 consultants), 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 consultants, 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, 42,119 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 consultants by location

51 lists · largest first

Every Grid integration consultants 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 consultants, 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 consultants are there worldwide?

RevenueBase identified 12,826 grid integration consultants 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?

Entrust Solutions Group, headquartered in Lisle, tops this list with the largest team on record.

Which country has the most grid integration consultants?

The United States leads with 1,296 companies, followed by Brazil (999) and Germany (856). Every grid integration consultants list by country and city is linked on this page.

Which city has the most grid integration consultants?

Madrid leads with 113 headquartered companies, followed by London (109) and Sao Paulo (90).

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 42,119 verified decision-maker contacts tracked across these 12,826 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.