Company lists · Data refreshed October 2026

Top 25 Energy development companies worldwide

Name: Energy development companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 17,636 companies tracked

RevenueBase identified 17,636 company matches for energy development companies worldwide as of October 2026 and tracks 919,555 professional contacts across them, including 228,409 with verified work emails. The United States is the largest market and Madrid the largest hub.

This list covers company matches for energy development companies 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 October 12, 2026. Country and city lists for energy development companies 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 Oct 12, 2026 How this list was built

17,636Companies

919,555Contacts tracked

228,409Verified emails

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The 25 largest energy development companies worldwide

Ranked by team size

Top 25 of 17,636 company matches for energy development companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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	Siemens Energy	Exact match	Munich, GermanyHQ recorded Oct 12, 2026	10001+	50,660 contacts →
	Exact match “Siemens Energy is one of the world’s leading energy technology companies.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Worley	Exact match	Sydney, AustraliaHQ recorded Oct 12, 2026	10001+	35,018 contacts →
	Exact match “Worley is a global professional services company of energy, chemicals and resources experts headquartered in Australia.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Petronas	Exact match	Kuala Lumpur, MalaysiaHQ recorded Oct 12, 2026	10001+	29,120 contacts →
	Exact match “Petroliam Nasional Berhad (PETRONAS) is a leading global energy company committed to powering society’s progress in a responsible and sustainable manner.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Acciona	Exact match	Madrid, SpainHQ recorded Oct 12, 2026	10001+	28,930 contacts →
	Exact match “ACCIONA champions a different way of doing business: Business as Unusual, delivering benefits far beyond the corporate realm.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Mcdermott International, LTD	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	10001+	21,087 contacts →
	Exact match “McDermott is a premier provider of engineering and construction solutions to the energy industry.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Technipfmc	Exact match	Newcastle Upon Tyne, United KingdomHQ recorded Oct 12, 2026	10001+	20,783 contacts →
	Exact match “TechnipFMC is a leading technology provider to the traditional and new energies industry, delivering fully integrated projects, products, and services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	OXY	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	10001+	16,208 contacts →
	Exact match “Oxy is an international energy company that produces, markets and transports oil and natural gas to maximize value and provide resources fundamental to life.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Amec Foster Wheeler	Exact match	Aberdeen, United KingdomHQ recorded Oct 12, 2026	10001+	15,181 contacts →
	Exact match “Wood Group has combined with Amec Foster Wheeler to form a new global leader in the delivery of project, engineering and technical services to energy and industrial markets.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Equinor	Exact match	Stavanger, NorwayHQ recorded Oct 12, 2026	10001+	14,377 contacts →
	Exact match “We provide reliable energy for a world with growing demand.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Tecnicas Reunidas	Exact match	Madrid, SpainHQ recorded Oct 12, 2026	10001+	11,378 contacts →
	Exact match “TR is an international general contractor engaged in the engineering and construction of industrial facilities in the fields of-Oil & Gas -Refining & Petrochemical -Power…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Tata Power	Exact match	Mumbai, IndiaHQ recorded Oct 12, 2026	10001+	9,453 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Dalkia	Exact match	Saint-andré-lez-lille, FranceHQ recorded Oct 12, 2026	10001+	8,823 contacts →
	Exact match “Dalkia : ensemble, relevons le défi climatique!” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	KENT	Exact match	Dubai, United Arab EmiratesHQ recorded Oct 12, 2026	10001+	7,369 contacts →
	Exact match “We design, build and maintain the assets that power the world for today and make it future-ready for tomorrow.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Ørsted	Exact match	Fredericia, United StatesHQ recorded Oct 12, 2026	5,001-10,000	7,263 contacts →
	Exact match “Ørsted is the global leader in offshore wind power and is one of the largest renewable energy companies in the world.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Assystem	Exact match	Courbevoie, FranceHQ recorded Oct 12, 2026	5,001-10,000	6,749 contacts →
	Exact match “Assystem, one of the world's leading independent nuclear engineering companies, is committed to accelerating the energy transition.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Alfanar	Exact match	Riyadh, Saudi ArabiaHQ recorded Oct 12, 2026	10001+	6,606 contacts →
	Exact match “alfanar builds efficient energy systems & solutions of the present and sets up infrastructures for a brighter future.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Nextera Energy Resources	Exact match	Juno Beach, FL, United StatesHQ recorded Oct 12, 2026	10001+	6,409 contacts →
	Exact match “NextEra Energy Resources, LLC, together with its affiliated entities,("NextEra Energy Resources") is one of the largest energy infrastructure companies in North America.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Mortenson	Exact match	Minneapolis, MN, United StatesHQ recorded Oct 12, 2026	5,001-10,000	5,884 contacts →
	Exact match “Mortenson is a U.S-based, top-25 builder, developer and provider of energy and engineering services committed to helping organizations move their strategies forward.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Nesma & Partners	Exact match	Khobar, Saudi ArabiaHQ recorded Oct 12, 2026	10001+	5,837 contacts →
	Exact match “Nesma & Partners group is the leading provider of integrated project solutions in the Kingdom of Saudi Arabia.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	GS E&c	Exact match	Seoul, South KoreaHQ recorded Oct 12, 2026	5,001-10,000	5,758 contacts →
	Exact match “GS E&C is Korea`s representative global contractor leveraging its experience in Civil Engineering, Building, Oil & Gas, Power Plants and Renewable Energy to continually provide…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	The AES Corporation	Exact match	Arlington, VA, United StatesHQ recorded Oct 12, 2026	5,001-10,000	5,522 contacts →
	Exact match “The world no longer thinks of energy as a matter of supply and demand.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	GALP	Exact match	Alcântara, PortugalHQ recorded Oct 12, 2026	5,001-10,000	5,171 contacts →
	Exact match “Galp is an energy company committed to the development of efficient solutions in its operations and in the integrated services it offers to customers.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Enel Green Power	Exact match	Rome, ItalyHQ recorded Oct 12, 2026	5,001-10,000	4,769 contacts →
	Exact match “We are the Enel Group company dedicated to the development and management of renewable energy generation worldwide.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	OQ	Exact match	Ghubra, OmanHQ recorded Oct 12, 2026	5,001-10,000	4,380 contacts →
	Exact match “At OQ, we bring together the strength of a global energy investment group rooted in Oman.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	PTTEP	Exact match	Chatuchak, ThailandHQ recorded Oct 12, 2026	1,001-5,000	3,997 contacts →
	Exact match “PTTEP conducts business in petroleum exploration, development, and production.” Recorded in the RevenueBase company graph · Oct 12, 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 “energy development companies”. 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 17,636 energy development companies worldwide

See the full list, filter by size, metro and specialty, and access 228,409 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy development companies worldwide at a glance

As of Oct 12, 2026

24.8%Verified-email coverage

52.1Average contacts per company

11-50Median size (employees)

1.1%Largest-city concentration · Madrid

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

7,290

11-50

6,317

51-200

2,370

201-500

792

501-1,000

332

1,001-5,000

328

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 energy development companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “energy development companies” 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 228,409 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 October 12, 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.

Energy development companies by location

104 lists · largest first

Every Energy development 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 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 “energy development companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy development companies are there worldwide?

RevenueBase identified 17,636 company matches for energy development companies worldwide as of October 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?

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

Which country has the most energy development companies?

The United States leads with 1,771 companies, followed by Brazil (1,461) and Italy (1,001). Every energy development companies list by country and city is linked on this page.

Which city has the most energy development companies?

Madrid leads with 194 company records, followed by London (182) and Sao Paulo (174).

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 228,409 professional contacts with verified work emails tracked across these 17,636 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 October 12, 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.