Company lists · Data refreshed November 2026

Top 25 Transmission and interconnection consultants worldwide

Name: Transmission and interconnection consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 8,817 companies tracked

RevenueBase identified 8,817 company matches for transmission and interconnection consultants worldwide as of November 2026 and tracks 244,503 professional contacts across them, including 73,015 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for transmission and interconnection consultants worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for transmission and interconnection consultants follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

8,817Companies

244,503Contacts tracked

73,015Verified emails

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The 25 largest transmission and interconnection consultants worldwide

Ranked by team size

Top 25 of 8,817 company matches for transmission and interconnection consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Atkinsréalis	Exact match	Montreal, QC, CanadaHQ recorded Nov 6, 2026	10001+	25,123 contacts →
	Exact match “We are a world-class engineering services and nuclear organization.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Atkins	Exact match	Epsom, FL, United KingdomHQ recorded Nov 6, 2026	10001+	9,322 contacts →
	Exact match “Atkins is now AtkinsRéalis.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Sargent & Lundy	Exact match	Chicago, NJ, United StatesHQ recorded Nov 6, 2026	1,001-5,000	4,591 contacts →
	Exact match “Sargent & Lundy is one of the world’s longest-standing full-service architect engineering firms.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	National Engineering Services Pakistan PVT Limited Nespak	Exact match	Lahore, PakistanHQ recorded Nov 6, 2026	5,001-10,000	3,557 contacts →
	Exact match “NESPAK is Pakistan’s premier consultancy organization (established in 1973).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Entrust Solutions Group	Exact match	Lisle, IL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,019 contacts →
	Exact match “ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Tabocas Participações Empreendimentos S A	Exact match	Belo Horizonte, BrazilHQ recorded Nov 6, 2026	10001+	2,443 contacts →
	Exact match “Fundada em abril de em Belo Horizonte (MG), a Tabocas é referência nacional na modalidade EPC Full, dentro dos setores de construção e engenharia civil, com foco de atuação na…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Omexom	Exact match	Nanterre, FranceHQ recorded Nov 6, 2026	5,001-10,000	2,108 contacts →
	Exact match “With today's global energy sector undergoing constant change, Omexom works with its clients in delivering on the promises of the energy transition.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Enercon Services, INC	Exact match	Kennesaw, PA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,022 contacts →
	Exact match “ENERCON is a multi-discipline engineering and environmental engineering support services firm focused on delivering safe and efficient solutions for the power, data center and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Shaker Consultancy Group	Exact match	Cairo, EgyptHQ recorded Nov 6, 2026	1,001-5,000	1,986 contacts →
	Exact match “Since its founding in 1982, Shaker has established itself as one of the leading engineering and design firms across the MENA region, with offices in 8 countries and projects…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Engelmig Energia	Exact match	Belo Horizonte, BrazilHQ recorded Nov 6, 2026	5,001-10,000	1,929 contacts →
	Exact match “A Engelmig foi fundada em 1985 com o objetivo de prestar serviços de engenharia em redes de distribuição de energia elétrica.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Westwood Professional Services	Exact match	Plano, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,849 contacts →
	Exact match “At Westwood, our purpose is to create a better world for people through our work.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Çalık Enerji	Exact match	İstanbul, TürkiyeHQ recorded Nov 6, 2026	10001+	1,804 contacts →
	Exact match “Founded in 1998, Çalık Enerji is a leading international energy company with a strong track record in delivering integrated, turn-key contracting projects across Europe, Central…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Taqa Transmission	Exact match	Abu Dhabi, United Arab EmiratesHQ recorded Nov 6, 2026	1,001-5,000	1,794 contacts →
	Exact match “We own and operate safe, sustainable, economic and reliable transmission networks that connect generation plants to distribution companies and other customers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Ingetec	Exact match	Bogota, ColombiaHQ recorded Nov 6, 2026	1,001-5,000	1,588 contacts →
	Exact match “Ingetec está conformado por un grupo de profesionales con alto nivel de especialización, quienes trabajan dentro de las diferentes gerencias y divisiones que componen la…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Ulteig	Exact match	Fargo, IA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,491 contacts →
	Exact match “Ulteig delivers comprehensive design engineering, program management and technical and field services that strengthen infrastructure vital to everyday life.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	BHI Energy	Exact match	Weymouth, MA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	1,484 contacts →
	Exact match “BHI Energy is an industry-leading provider of specialty services and staffing solutions in support of the daily operations, routine maintenance and capital investment requirements…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Davey Resource Group, INC	Exact match	Kent, OH, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,477 contacts →
	Exact match “Davey Resource Group, Inc.(DRG) provides innovative consulting and field services that support utility infrastructure and environmental stewardship.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Control Construções Ltda	Exact match	Joao Pessoa, BrazilHQ recorded Nov 6, 2026	1,001-5,000	1,471 contacts →
	Exact match “Fundada em na cidade de João Pessoa, a empresa se tornou especialista nas áreas de construção e prestação de serviços no setor elétrico.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Valard Construction	Exact match	Edmonton, AB, CanadaHQ recorded Nov 6, 2026	1,001-5,000	1,193 contacts →
	Exact match “Headquartered in Edmonton, Alberta - Valard is Canada’s premier utility contractor, with full-service capabilities for transmission, distribution, substations, foundations…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Penspen	Exact match	London, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	1,100 contacts →
	Exact match “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Dashiell Corporation	Exact match	Houston, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,087 contacts →
	Exact match “Dashiell is a leading national provider of technical services to the electric utility, power generation, industrial, renewable and energy industries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	GAI Consultants, INC	Exact match	Homestead, PA, United StatesHQ recorded Nov 6, 2026	501-1,000	1,027 contacts →
	Exact match “Transforming ideas into reality® since 1958, GAI Consultants is an engineering, planning, and environmental consulting firm that provides customized solutions and local expertise…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Electrical Consultants, INC	Exact match	Billings, WA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	987 contacts →
	Exact match “Electrical Consultants, Inc.(ECI) is an employee-owned, national provider of high voltage transmission, substation, and distribution solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Mesa Associates, INC	Exact match	Madison, OH, United StatesHQ recorded Nov 6, 2026	1,001-5,000	904 contacts →
	Exact match “Mesa is a full service engineering, procurement, and construction management firm specializing in providing engineering services to electric utility, heavy industrial, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Willdan	Exact match	Anaheim, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	897 contacts →
	Exact match “Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “transmission and interconnection consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 8,817 transmission and interconnection consultants worldwide

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Transmission and interconnection consultants worldwide at a glance

As of Nov 6, 2026

29.9%Verified-email coverage

27.7Average contacts per company

11-50Median size (employees)

0.8%Largest-city concentration · Sao Paulo

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

4,293

11-50

2,746

51-200

1,093

201-500

339

501-1,000

138

1,001-5,000

127

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for transmission and interconnection consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “transmission and interconnection consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 73,015 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Transmission and interconnection consultants by location

54 lists · largest first

Every Transmission and interconnection 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “transmission and interconnection consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many transmission and interconnection consultants are there worldwide?

RevenueBase identified 8,817 company matches for transmission and interconnection consultants worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Atkinsréalis tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most transmission and interconnection consultants?

The United States leads with 1,271 companies, followed by Brazil (737) and India (550). Every transmission and interconnection consultants list by country and city is linked on this page.

Which city has the most transmission and interconnection consultants?

Sao Paulo leads with 72 company records, followed by London (67) and Calgary (62).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 73,015 professional contacts with verified work emails tracked across these 8,817 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.