Company lists · Data refreshed September 2026

Top 25 Energy sector IT consultants worldwide

Name: Energy sector IT consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 49,625 companies tracked

RevenueBase identified 49,625 energy sector IT consultants worldwide as of September 2026 and tracks 1,258,569 professional contacts across them, including 338,849 with verified work emails. The United States is the largest market and London the largest hub.

This list covers energy sector IT 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 28, 2026. Country and city lists for energy sector IT 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 28, 2026 86% judged on-target in blind review

49,625Companies

1,258,569Contacts tracked

338,849Verified emails

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The 25 largest energy sector IT consultants worldwide

Ranked by team size

Top 25 of 49,625 energy sector IT consultants worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to energy sector IT 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	DXC Technology	Partial evidence	Ashburn, VA, United StatesHQ checked Sep 28, 2026	10001+	82,768 contacts →
	Partial evidence “DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…” Source: RevenueBase Database · checked Sep 28, 2026
2	NTT Data	Partial evidence	Tokyo, JapanHQ checked Sep 28, 2026	10001+	38,436 contacts →
	Partial evidence “NTT DATA – a part of NTT Group – IT and business services headquartered in Tokyo.” Source: RevenueBase Database · checked Sep 28, 2026
3	Atkinsréalis	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 28, 2026	10001+	22,733 contacts →
	Indirect evidence “We are a world-class engineering services and nuclear organization.” Source: RevenueBase Database · checked Sep 28, 2026
4	Technipfmc	Partial evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 28, 2026	10001+	19,907 contacts →
	Partial evidence “TechnipFMC is a leading technology provider to the traditional and new energies industry, delivering fully integrated projects, products, and services.” Source: RevenueBase Database · checked Sep 28, 2026
5	Birlasoft	Indirect evidence	Pune, IndiaHQ checked Sep 28, 2026	10001+	13,983 contacts →
	Indirect evidence “Navigating Change.” Source: RevenueBase Database · checked Sep 28, 2026
6	CDW	Indirect evidence	Vernon Hills, IL, United StatesHQ checked Sep 28, 2026	10001+	13,155 contacts →
	Indirect evidence “At CDW, we know how to make technology work so people can do great things.” Source: RevenueBase Database · checked Sep 28, 2026
7	Guidehouse	Partial evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	10001+	12,815 contacts →
	Partial evidence “Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.” Source: RevenueBase Database · checked Sep 28, 2026
8	Apex Systems	Indirect evidence	Glen Allen, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	12,231 contacts →
	Indirect evidence “Everforth Apex Systems, part of the Everforth ™ Network, is a leading global technology services company specializing in customizable industry-specific solutions that turns…” Source: RevenueBase Database · checked Sep 28, 2026
9	Snc-Lavalin	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 28, 2026	10001+	9,992 contacts →
	Indirect evidence “SNC Lavalin is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 28, 2026
10	Atkins	Indirect evidence	Epsom, United KingdomHQ checked Sep 28, 2026	10001+	9,297 contacts →
	Indirect evidence “Atkins is now AtkinsRéalis.” Source: RevenueBase Database · checked Sep 28, 2026
11	Vinci Energies	Strong evidence	Nanterre, FranceHQ checked Sep 28, 2026	10001+	8,598 contacts →
	Strong evidence “In a world undergoing constant change, VINCI Energies contributes to the environmental transition by helping bring about major trends in the digital landscape and energy sector.” Source: RevenueBase Database · checked Sep 28, 2026
12	Tata Consulting Engineers	Strong evidence	Mumbai, IndiaHQ checked Sep 28, 2026	5,001-10,000	8,440 contacts →
	Strong evidence “Tata Consulting Engineers Limited (TCE) is the largest Indian private sector engineering and project consultancy and an emerging global leader in integrated engineering solutions.” Source: RevenueBase Database · checked Sep 28, 2026
13	Devoteam	Indirect evidence	Levallois-perret, FranceHQ checked Sep 28, 2026	10001+	7,827 contacts →
	Indirect evidence “Devoteam is a AI-driven tech consulting firm specialised in cloud platforms, cyber, data, and sustainability.” Source: RevenueBase Database · checked Sep 28, 2026
14	KENT	Partial evidence	Dubai, United Arab EmiratesHQ checked Sep 28, 2026	10001+	7,045 contacts →
	Partial evidence “We design, build and maintain the assets that power the world for today and make it future-ready for tomorrow.” Source: RevenueBase Database · checked Sep 28, 2026
15	SHI International Corp	Indirect evidence	Somerset, NJ, United StatesHQ checked Sep 28, 2026	5,001-10,000	6,734 contacts →
	Indirect evidence “Think of SHI as your personal technology concierge.” Source: RevenueBase Database · checked Sep 28, 2026
16	AYESA	Indirect evidence	Sevilla, SpainHQ checked Sep 28, 2026	10001+	6,630 contacts →
	Indirect evidence “Ayesa is a global provider of technology and engineering services with more than 11500 employees in twenty-three countries across Europe, Latin America, Africa and Asia.” Source: RevenueBase Database · checked Sep 28, 2026
17	Seidor	Indirect evidence	Barcelona, SpainHQ checked Sep 28, 2026	5,001-10,000	6,133 contacts →
	Indirect evidence “At SEIDOR we help drive the transformation and competitiveness of our clients through technology and innovation, always focusing on the human value and prioritizing talents and…” Source: RevenueBase Database · checked Sep 28, 2026
18	Lamprell	Partial evidence	Sharjah, United Arab EmiratesHQ checked Sep 28, 2026	5,001-10,000	6,080 contacts →
	Partial evidence “With 50 years of experience, Lamprell is a key player in the global offshore wind and oil & gas markets, delivering high-quality, complex energy infrastructure projects.” Source: RevenueBase Database · checked Sep 28, 2026
19	Datacom	Indirect evidence	Auckland, New ZealandHQ checked Sep 28, 2026	5,001-10,000	5,958 contacts →
	Indirect evidence “Customer focused values.” Source: RevenueBase Database · checked Sep 28, 2026
20	SII Poland	Indirect evidence	Warszawa, PolandHQ checked Sep 28, 2026	5,001-10,000	5,519 contacts →
	Indirect evidence “With over 7 500 Power People, Sii is Poland’s #1 partner for technology consulting, AI-driven digital transformation, engineering, and business services, empowering companies to…” Source: RevenueBase Database · checked Sep 28, 2026
21	SCC	Partial evidence	Birmingham, FranceHQ checked Sep 28, 2026	5,001-10,000	5,460 contacts →
	Partial evidence “SCC unleashes the potential of IT for global businesses, as one of Europe’s largest independent IT groups.” Source: RevenueBase Database · checked Sep 28, 2026
22	Groupe SII	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	10001+	4,928 contacts →
	Indirect evidence “Le groupe SII est une société d’ingénierie et de conseil en technologies (ICT) et une entreprise de services numériques (ESN) créée en 1979 par Bernard HUVÉ, ingénieur de…” Source: RevenueBase Database · checked Sep 28, 2026
23	Amaris Consulting	Indirect evidence	Chêne-bourg, SwitzerlandHQ checked Sep 28, 2026	5,001-10,000	4,824 contacts →
	Indirect evidence “Amaris Consulting is an independent technology consulting firm providing guidance and solutions to businesses.” Source: RevenueBase Database · checked Sep 28, 2026
24	Team Computers	Partial evidence	New Delhi, IndiaHQ checked Sep 28, 2026	1,001-5,000	4,607 contacts →
	Partial evidence “Our story began in 1987, when our founder, Ranjan Chopra, an alumnus of IIT Kanpur, set out to bridge the gap between business needs and IT solutions in India.” Source: RevenueBase Database · checked Sep 28, 2026
25	Management Solutions	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	1,001-5,000	4,468 contacts →
	Indirect evidence “Management Solutions is a leading provider of business consulting services for regulated industries.” Source: RevenueBase Database · checked Sep 28, 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: energy sector IT 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 energy sector IT consultants.
Partial evidence: Its own public description names part of energy sector IT consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy sector IT 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 49,625 energy sector IT consultants worldwide

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Energy sector IT consultants worldwide at a glance

As of Sep 28, 2026

26.9%Verified-email coverage

25.4Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

25,123

11-50

16,194

51-200

5,628

201-500

1,450

501-1,000

508

1,001-5,000

408

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 energy sector IT 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 energy sector IT consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “energy sector IT 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 energy sector IT 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 energy sector IT 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, 338,849 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 28, 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.

Energy sector IT consultants by location

254 lists · largest first

Every Energy sector IT 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 energy sector IT 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 energy sector IT consultants are there worldwide?

RevenueBase identified 49,625 energy sector IT 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?

DXC Technology, headquartered in Ashburn, tops this list with the largest team on record.

Which country has the most energy sector IT consultants?

The United States leads with 8,416 companies, followed by India (4,159) and Brazil (2,476). Every energy sector IT consultants list by country and city is linked on this page.

Which city has the most energy sector IT consultants?

London leads with 665 headquartered companies, followed by Sao Paulo (504) and Houston (465).

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 338,849 verified decision-maker contacts tracked across these 49,625 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 28, 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.