Company lists · Data refreshed November 2026

Top 25 Onsite power generation companies worldwide

RevenueBase identified 4,967 company matches for onsite power generation companies worldwide as of November 2026 and tracks 145,159 professional contacts across them, including 39,222 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for onsite 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 November 6, 2026. Country and city lists for onsite 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 Nov 6, 2026 How this list was built
4,967Companies
145,159Contacts tracked
39,222Verified emails
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The 25 largest onsite power generation companies worldwide

Ranked by team size
Top 25 of 4,967 company matches for onsite power generation companies 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMumbai, IndiaHQ recorded Nov 6, 202610001+9,891 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 · Nov 6, 2026 · View company records in RevenueBase
2Exact matchWaukesha, WI, United StatesHQ recorded Nov 6, 20265,001-10,0004,041 contacts →

Exact match

“Generac is the total energy solutions company powering a smarter world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 202610001+3,768 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchChicago, IL, United StatesHQ recorded Nov 6, 20261,001-5,0002,526 contacts →

Exact match

“Invenergy is North America’s largest privately held developer, owner, and operator of innovative, reliable power infrastructure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 20261,001-5,0002,485 contacts →

Exact match

“Bloom Energy empowers businesses and communities to responsibly take charge of their energy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMunich, WI, GermanyHQ recorded Nov 6, 20261,001-5,0002,393 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 · Nov 6, 2026 · View company records in RevenueBase
7Exact matchNairobi, KenyaHQ recorded Nov 6, 20261,001-5,0002,218 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchHouston, TX, United StatesHQ recorded Nov 6, 20261,001-5,0002,199 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 · Nov 6, 2026 · View company records in RevenueBase
9Exact matchChiyoda-ku, United KingdomHQ recorded Nov 6, 202610001+1,329 contacts →

Exact match

“Mitsubishi Power is a power solutions brand of Mitsubishi heavy industries, Ltd.(MHI).”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchDubai, United Arab EmiratesHQ recorded Nov 6, 20261,001-5,0001,194 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 · Nov 6, 2026 · View company records in RevenueBase
11Exact matchAtlanta, United StatesHQ recorded Nov 6, 2026201-5001,154 contacts →

Exact match

“PIC Group, Inc, established in 1988 and headquartered in Atlanta, GA, is a global provider of service solutions to the power generation industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchPorto Alegre, BrazilHQ recorded Nov 6, 20261,001-5,000996 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 · Nov 6, 2026 · View company records in RevenueBase
13Exact matchVadodara, IndiaHQ recorded Nov 6, 20265,001-10,000910 contacts →

Exact match

“The Company was promoted by erstwhile Gujarat Electricity Board (GEB) as it’s wholly owned subsidiary in the context of liberalization and as a part of efforts towards…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMumbai, IndiaHQ recorded Nov 6, 2026501-1,000900 contacts →

Exact match

“Powerica is a leading manufacturer of Cummins Diesel and Gas Generators in India.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 2026501-1,000860 contacts →

Exact match

“Clearway Energy Group’s vision is a world powered by clean energy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSao Paulo, BrazilHQ recorded Nov 6, 2026201-500854 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 · Nov 6, 2026 · View company records in RevenueBase
17Exact matchJakarta Selatan, IndonesiaHQ recorded Nov 6, 20265,001-10,000851 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 · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSão Bernardo Do Campo, BrazilHQ recorded Nov 6, 2026501-1,000837 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 · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSedalia, MO, United StatesHQ recorded Nov 6, 2026501-1,000834 contacts →

Exact match

“PROENERGY is an engineering, R&D, and manufacturing powerhouse.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMedellín, ColombiaHQ recorded Nov 6, 2026501-1,000769 contacts →

Exact match

“Somos una empresa privada de generación y comercialización de energía con 27 centrales de generación que suman más de 3.100 MW de Capacidad Efectiva Neta.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000711 contacts →

Exact match

“We’re Nadara, one of Europe’s largest renewable energy independent power producers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBrisbane, AustraliaHQ recorded Nov 6, 2026501-1,000664 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 · Nov 6, 2026 · View company records in RevenueBase
23Exact matchGurgaon, IndiaHQ recorded Nov 6, 2026501-1,000650 contacts →

Exact match

“Juniper Green Energy is an independent renewable energy power producer in India, focused on the development, construction, and operation of utility-scale solar, wind, hybrid, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchPrague 7, Czech RepublicHQ recorded Nov 6, 2026501-1,000631 contacts →

Exact match

“ComAp leads the way in providing smart power control solutions and services that are highly flexible, intuitive, and scalable.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchDoral, United StatesHQ recorded Nov 6, 20261,001-5,000630 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 · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 4,967 onsite power generation companies worldwide

See the full list, filter by size, metro and specialty, and access 39,222 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Onsite power generation companies worldwide at a glance

As of Nov 6, 2026
27.0%Verified-email coverage
29.2Average contacts per company
11-50Median size (employees)
1.1%Largest-city concentration · Sao Paulo
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,768
11-50
1,864
51-200
821
201-500
261
501-1,000
104
1,001-5,000
70
5,001-10,000
13
10001+
10

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 onsite power generation companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “onsite 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 39,222 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.

Onsite power generation companies by location

25 lists · largest first

Every Onsite 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 “onsite power generation companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many onsite power generation companies are there worldwide?

RevenueBase identified 4,967 company matches for onsite power generation companies 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?

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

Which country has the most onsite power generation companies?

The United States leads with 1,049 companies, followed by India (380) and Brazil (357). Every onsite power generation companies list by country and city is linked on this page.

Which city has the most onsite power generation companies?

Sao Paulo leads with 56 company records, followed by Houston (51) and Bangalore (31).

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 39,222 professional contacts with verified work emails tracked across these 4,967 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.