Company lists · Data refreshed September 2026

Top 25 On-site power generation companies worldwide

Name: On-site power generation companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 8,170 companies tracked

RevenueBase identified 8,170 company matches for on-site power generation companies worldwide as of September 2026 and tracks 129,378 professional contacts across them, including 30,202 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for on-site power generation 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 September 20, 2026. Country and city lists for on-site power generation 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 Sep 20, 2026 How this list was built

8,170Companies

129,378Contacts tracked

30,202Verified emails

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The 25 largest on-site power generation companies worldwide

Ranked by team size

Top 25 of 8,170 company matches for on-site power generation companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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	KENTZ	Exact match	Dubai, United Arab EmiratesHQ recorded Sep 20, 2026	10001+	3,987 contacts →
	Exact match “Following the acquisition of SNC-Lavalin's oil and gas division, Kentz has become a part of Kent.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Fieldcore	Exact match	Atlanta, GA, United StatesHQ recorded Sep 20, 2026	10001+	3,700 contacts →
	Exact match “GE Vernova is a planned, purpose-built global energy company that includes Power, Wind, and Electrification businesses and is supported by its accelerator businesses of Advanced…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Bloom Energy	Exact match	San Jose, CA, United StatesHQ recorded Sep 20, 2026	1,001-5,000	2,221 contacts →
	Exact match “Bloom Energy empowers businesses and communities to responsibly take charge of their energy.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Calpine	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	2,112 contacts →
	Exact match “A business unit of Constellation (NASDAQ: CEG), Calpine Corporation is America’s largest generator of electricity from natural gas and geothermal resources with operations in…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Innio Group	Exact match	Munich, GermanyHQ recorded Sep 20, 2026	1,001-5,000	2,111 contacts →
	Exact match “INNIO Group is a global distributed energy solutions provider that delivers reliable, flexible, transient, decentralized, modular and efficient power.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Kengen Kenya	Exact match	Nairobi, KenyaHQ recorded Sep 20, 2026	1,001-5,000	1,998 contacts →
	Exact match “Kenya Electricity Generating Company PLC (KenGen) is the leading electric power generating company in East Africa.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Mitsubishi Power	Exact match	Chiyoda-ku, JapanHQ recorded Sep 20, 2026	10001+	1,264 contacts →
	Exact match “Mitsubishi Power is a power solutions brand of Mitsubishi heavy industries, Ltd.(MHI).” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Jubaili Bros	Exact match	Dubai, United Arab EmiratesHQ recorded Sep 20, 2026	1,001-5,000	1,122 contacts →
	Exact match “Jubaili Bros is a global leader in providing data-enabled conventional and renewable off-grid power solutions.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Sudhir Power LTD	Exact match	Gurugram, IndiaHQ recorded Sep 20, 2026	1,001-5,000	1,036 contacts →
	Exact match “Sudhir Power Limited, established in 1973, is a leader in Diesel Gensets, Transformers, PSS, HT & LT panels, and Equipment rental services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Stemac	Exact match	Porto Alegre, BrazilHQ recorded Sep 20, 2026	1,001-5,000	849 contacts →
	Exact match “Líder nacional na fabricação e comercialização de grupos geradores, a STEMAC projeta e executa soluções em energia através da maior estrutura de atendimento, com 38 filiais…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Clearway Energy Group	Exact match	San Francisco, CA, United StatesHQ recorded Sep 20, 2026	501-1,000	795 contacts →
	Exact match “Clearway Energy Group’s vision is a world powered by clean energy.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Powerica Limited	Exact match	Mumbai, IndiaHQ recorded Sep 20, 2026	501-1,000	785 contacts →
	Exact match “Powerica is a leading manufacturer of Cummins Diesel and Gas Generators in India.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	CESP	Exact match	Sao Paulo, BrazilHQ recorded Sep 20, 2026	201-500	779 contacts →
	Exact match “Criada em 1966, a partir da fusão de 11 empresas, a CESP registra em sua história iniciativas pioneiras na tecnologia construtiva de usinas e na recuperação e preservação do meio…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	PLN Indonesia Power Services	Exact match	Jakarta Selatan, IndonesiaHQ recorded Sep 20, 2026	5,001-10,000	734 contacts →
	Exact match “Berdiri sejak 15 April 1998, PT PLN Indonesia Power Services (PLN IP Services) mulai beroperasi di Jakarta pada 15 Agustus 1998.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Tecnogera	Exact match	São Bernardo Do Campo, BrazilHQ recorded Sep 20, 2026	501-1,000	721 contacts →
	Exact match “A Tecnogera é uma empresa de infraestrutura e prestação de serviços em energia temporária e atua com locação de Grupos Geradores de energia, Bancos de Cargas, Torres de…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	EDL	Exact match	Brisbane, AustraliaHQ recorded Sep 20, 2026	501-1,000	644 contacts →
	Exact match “As a leading global producer of sustainable distributed energy, EDL is dedicated to a world of new energy for our customers, stakeholders and communities.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Nadara	Exact match	London, United KingdomHQ recorded Sep 20, 2026	501-1,000	629 contacts →
	Exact match “We’re Nadara, one of Europe’s largest renewable energy independent power producers.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Alterman, INC	Exact match	Live Oak, TX, United StatesHQ recorded Sep 20, 2026	501-1,000	597 contacts →
	Exact match “Since 1923, Alterman has provided electrical construction on many of San Antonio and Austin's most impressive landmarks and contemporary structures.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Soenergy International	Exact match	Doral, FL, United StatesHQ recorded Sep 20, 2026	1,001-5,000	567 contacts →
	Exact match “SoEnergy is a global provider of "energy as a service", ensuring customized solutions for a diverse array of organizations and industries worldwide, such as mining, oil & gas…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	AKUO	Exact match	Paris, FranceHQ recorded Sep 20, 2026	201-500	525 contacts →
	Exact match “Akuo est spécialisé dans la mise en œuvre d’unités de production d’électricité à partir de ressources renouvelables, en particulier le solaire, l'éolien et le stockage.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	Spark Power	Exact match	Oakville, CanadaHQ recorded Sep 20, 2026	1,001-5,000	522 contacts →
	Exact match “Spark Power is a leading independent provider of end-to-end electrical services, operations and maintenance services, and energy sustainability solutions to the industrial…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Saber Power	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	521 contacts →
	Exact match “Saber Power Services, a portfolio company of Greenbelt Capital Partners, is a fully integrated electrical power system services firm providing end-to-end solutions across utility…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	APR Energy	Exact match	Jacksonville, FL, United StatesHQ recorded Sep 20, 2026	201-500	502 contacts →
	Exact match “APR Energy delivers reliable electricity, fast.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	EC Electric	Exact match	Portland, OR, United StatesHQ recorded Sep 20, 2026	1,001-5,000	490 contacts →
	Exact match “Our lives function on a power grid.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Gali Energia	Exact match	Bauru, BrazilHQ recorded Sep 20, 2026	201-500	486 contacts →
	Exact match “Desde 1995, a Gali Energia constrói uma trajetória de excelência e inovação no setor elétrico brasileiro, liderando um Brasil protagonista em soluções sustentáveis de energia.” Recorded in the RevenueBase company graph · Sep 20, 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 “on-site power generation 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 8,170 on-site power generation companies worldwide

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On-site power generation companies worldwide at a glance

As of Sep 20, 2026

23.3%Verified-email coverage

15.8Average contacts per company

11-50Median size (employees)

0.9%Largest-city concentration · Sao Paulo

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

3,489

11-50

3,129

51-200

1,033

201-500

298

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

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 on-site power generation companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “on-site power generation 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 30,202 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 September 20, 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.

On-site power generation companies by location

40 lists · largest first

Every On-site power generation 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 “on-site power generation companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many on-site power generation companies are there worldwide?

RevenueBase identified 8,170 company matches for on-site power generation companies worldwide as of September 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?

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

Which country has the most on-site power generation companies?

The United States leads with 1,443 companies, followed by Brazil (659) and India (495). Every on-site power generation companies list by country and city is linked on this page.

Which city has the most on-site power generation companies?

Sao Paulo leads with 76 company records, followed by Houston (60) and Karachi (45).

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 30,202 professional contacts with verified work emails tracked across these 8,170 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 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 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.