Company lists · Data refreshed September 2026

Top 25 Generator maintenance services worldwide

Name: Generator maintenance services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 2,987 companies tracked

RevenueBase identified 2,987 generator maintenance services worldwide as of September 2026 and tracks 33,901 professional contacts across them, including 8,211 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers generator maintenance services 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 19, 2026. Country and city lists for generator maintenance services 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 19, 2026 86% judged on-target in blind review

2,987Companies

33,901Contacts tracked

8,211Verified emails

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The 25 largest generator maintenance services worldwide

Ranked by team size

Top 25 of 2,987 generator maintenance services worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to generator maintenance services: 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	NAES	Partial evidence	Issaquah, WA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,956 contacts →
	Partial evidence “NAES is the power generation industry’s largest independent services provider, with more than 40 years of experience managing risk and turning it into profits.” Source: RevenueBase Database · checked Sep 19, 2026
2	Power Plant Services	Partial evidence	Melrose Park, IL, United StatesHQ checked Sep 19, 2026	201-500	1,463 contacts →
	Partial evidence “We are a full service turnkey provider for the power generation industry and those industries generating their own power as a means to an end.” Source: RevenueBase Database · checked Sep 19, 2026
3	Shermco Industries	Partial evidence	Irving, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,221 contacts →
	Partial evidence “Shermco Industries is a provider of safe, reliable testing, repair, professional training, electrical outage planning, maintenance and analysis of rotating apparatus and…” Source: RevenueBase Database · checked Sep 19, 2026
4	Powerica Limited	Partial evidence	Mumbai, IndiaHQ checked Sep 19, 2026	501-1,000	785 contacts →
	Partial evidence “Powerica is a leading manufacturer of Cummins Diesel and Gas Generators in India.” Source: RevenueBase Database · checked Sep 19, 2026
5	Data Engenharia	Indirect evidence	Sarzedo, BrazilHQ checked Sep 19, 2026	501-1,000	629 contacts →
	Indirect evidence “The DATA Engenharia is installed in a green area of m2, with m2 of constructed area, in the municipality of Sarzedo (industrial region in the vicinity of Belo Horizonte / MG).” Source: RevenueBase Database · checked Sep 19, 2026
6	Quartzelec Limited	Indirect evidence	Rugby, United KingdomHQ checked Sep 19, 2026	501-1,000	412 contacts →
	Indirect evidence “Quartzelec is a leading independent electrical engineering group delivering solutions and services in both UK and global markets.” Source: RevenueBase Database · checked Sep 19, 2026
7	Tereme Engenharia	Indirect evidence	Serra, BrazilHQ checked Sep 19, 2026	501-1,000	391 contacts →
	Indirect evidence “CONTRATOS DE MANUTENÇÃO A Tereme oferece a seus clientes soluções de manutenção global ou parcial dos equipamentos e instalações elétricas de uma planta industrial.” Source: RevenueBase Database · checked Sep 19, 2026
8	Md&a	Partial evidence	Latham, NY, United StatesHQ checked Sep 19, 2026	501-1,000	379 contacts →
	Partial evidence “Mechanical Dynamics & Analysis (MD & A) provides power generation companies around the globe with a full-service OEM alternative for services, parts, and repairs.” Source: RevenueBase Database · checked Sep 19, 2026
9	RWG Repair & Overhauls	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 19, 2026	201-500	316 contacts →
	Indirect evidence “RWG (Repair & Overhauls) Limited is a Siemens Energy business.” Source: RevenueBase Database · checked Sep 19, 2026
10	Energypac Power Generation LTD	Partial evidence	BangladeshHQ checked Sep 19, 2026	501-1,000	310 contacts →
	Partial evidence “Eenergypac Power Generation Ltd, began life in 1995 from the group headquarter office.” Source: RevenueBase Database · checked Sep 19, 2026
11	Taw, An IPS Company	Indirect evidence	Greenville, SC, United StatesHQ checked Sep 19, 2026	501-1,000	305 contacts →
	Indirect evidence “Excellence in creating innovative solutions for the supply, control and use of energy.” Source: RevenueBase Database · checked Sep 19, 2026
12	Moncobra	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	501-1,000	292 contacts →
	Indirect evidence “Empresa de referencia del Grupo Cobra especializada en diseño, ingeniería, instalaciones y montajes mecánicos y eléctricos y mantenimiento industrial.” Source: RevenueBase Database · checked Sep 19, 2026
13	First Multi-Tech Industrial And Development Corporation	Partial evidence	Mandaluyong City, PhilippinesHQ checked Sep 19, 2026	201-500	245 contacts →
	Partial evidence “First Multi-Tech Industrial and Development Corporation (FMIDC) is a provider of power solutions and preventive maintenance to different industries, predominantly telecoms.” Source: RevenueBase Database · checked Sep 19, 2026
14	Transcanada Turbines	Partial evidence	Airdrie, AB, CanadaHQ checked Sep 19, 2026	201-500	234 contacts →
	Partial evidence “TransCanada Turbines (TCT) is the sole authorized overhaul, repair and maintenance service provider for Siemens and General Electric (GE) aeroderivative industrial gas turbines…” Source: RevenueBase Database · checked Sep 19, 2026
15	Howden Maintenance Partners	Partial evidence	Zwijndrecht, BelgiumHQ checked Sep 19, 2026	201-500	223 contacts →
	Partial evidence “Howden Maintenance Partners is part of Chart Industries and is a growing service company within the group, specializing in the maintenance, repair, and overhaul of industrial…” Source: RevenueBase Database · checked Sep 19, 2026
16	Pt. Taka Turbomachinery Indonesia	Partial evidence	Bandung, IndonesiaHQ checked Sep 19, 2026	51-200	208 contacts →
	Partial evidence “Power Generation Services & Repairs for many more different types of Rotating Equipments & Turbomachinery, Accessories & Parts.* Field Services Division * In Shop Repair * Turbo…” Source: RevenueBase Database · checked Sep 19, 2026
17	Genserve	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	201-500	198 contacts →
	Partial evidence “GenServe supports critical infrastructure by delivering expert, OEM-agnostic power services across all generator systems and brands.” Source: RevenueBase Database · checked Sep 19, 2026
18	OFS	Partial evidence	Naas, IrelandHQ checked Sep 19, 2026	51-200	193 contacts →
	Partial evidence “OFS was established in 2002 to meet the growing needs of the international Oil & Gas, Power Generation and Energy markets.” Source: RevenueBase Database · checked Sep 19, 2026
19	Total Power Limited	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 19, 2026	51-200	185 contacts →
	Partial evidence “Critical Power.it’s all we do Delivering safe, reliable generator solutions and offering long-term protection for your complete power generation system is what Total Power excels…” Source: RevenueBase Database · checked Sep 19, 2026
20	Energ Geradores	Indirect evidence	São Bernardo Do Campo, BrazilHQ checked Sep 19, 2026	51-200	183 contacts →
	Indirect evidence “A ENERG Geradores atua desde 2003 oferecendo soluções completas em segurança energética para operações onde falhar não é uma opção.” Source: RevenueBase Database · checked Sep 19, 2026
21	Evans Enterprises Inc., An IPS Company	Indirect evidence	Norman, OK, United StatesHQ checked Sep 19, 2026	201-500	170 contacts →
	Indirect evidence “Located throughout the Southern and Western United States, Evans Enterprises has multiple locations to serve you.” Source: RevenueBase Database · checked Sep 19, 2026
22	Clifford Power Systems, INC	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 19, 2026	51-200	165 contacts →
	Partial evidence “For 40 years, Clifford Power has assured you have continuous power by providing dependable generator systems, services, rentals and parts.” Source: RevenueBase Database · checked Sep 19, 2026
23	National Electric Coil	Partial evidence	Columbus, OH, United StatesHQ checked Sep 19, 2026	501-1,000	153 contacts →
	Partial evidence “Leading independent manufacturer of generator stator and rotor windings, including inner-water and inner-hydrogen stator bars, roebel bars and diamond coils.” Source: RevenueBase Database · checked Sep 19, 2026
24	Power Engineering India PVT LTD	Partial evidence	Mapusa, IndiaHQ checked Sep 19, 2026	201-500	146 contacts →
	Partial evidence “A flagship of the Pai Kane Group, we are a leading manufacturer of Diesel and Gas generator sets based in India and with manufacturing facilities in India and UK.” Source: RevenueBase Database · checked Sep 19, 2026
25	Inserven C.A	Indirect evidence	Caracas, VenezuelaHQ checked Sep 19, 2026	201-500	144 contacts →
	Indirect evidence “Somos una empresa fundada en el año 1975, especializada en el área de generación eléctrica.” Source: RevenueBase Database · checked Sep 19, 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: generator maintenance services. 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 generator maintenance services.
Partial evidence: Its own public description names part of generator maintenance services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name generator maintenance services. 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 2,987 generator maintenance services worldwide

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Generator maintenance services worldwide at a glance

As of Sep 19, 2026

24.2%Verified-email coverage

11.3Average contacts per company

11-50Median size (employees)

1.3%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,280

11-50

1,128

51-200

415

201-500

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among generator maintenance services, 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 generator maintenance services are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “generator maintenance services”. 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 generator maintenance services), 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 generator maintenance services, 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, 8,211 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 19, 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.

Generator maintenance services by location

11 lists · largest first

Every Generator maintenance services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 generator maintenance services, 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 generator maintenance services are there worldwide?

RevenueBase identified 2,987 generator maintenance services 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?

NAES, headquartered in Issaquah, tops this list with the largest team on record.

Which country has the most generator maintenance services?

The United States leads with 679 companies, followed by Brazil (365) and India (180). Every generator maintenance services list by country and city is linked on this page.

Which city has the most generator maintenance services?

Sao Paulo leads with 39 headquartered companies, followed by Houston (25) and Istanbul (19).

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 8,211 verified decision-maker contacts tracked across these 2,987 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 19, 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.