Company lists · Data refreshed September 2026

Top 25 Hydropower maintenance services worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 1,721 companies tracked

RevenueBase identified 1,721 hydropower maintenance services worldwide as of September 2026 and tracks 44,280 professional contacts across them, including 9,777 with verified work emails. Brazil is the largest market and Sao Paulo the largest hub.

This list covers hydropower 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 20, 2026. Country and city lists for hydropower 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 20, 2026 86% judged on-target in blind review

1,721Companies

44,280Contacts tracked

9,777Verified emails

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The 25 largest hydropower maintenance services worldwide

Ranked by team size

Top 25 of 1,721 hydropower maintenance services worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to hydropower 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	Voith Hydro	Indirect evidence	Heidenheim, GermanyHQ checked Sep 20, 2026	5,001-10,000	3,267 contacts →
	Indirect evidence “Voith Hydro is one of the leading industrial partners for #PowerStation operators - worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
2	Dietsmann	Partial evidence	Fontvieille, MonacoHQ checked Sep 20, 2026	5,001-10,000	1,843 contacts →
	Partial evidence “Dietsmann is the leading independent specialist in Operation & Maintenance services for continuous-production plant in the oil & gas and power industries with over 40 years of…” Source: RevenueBase Database · checked Sep 20, 2026
3	Power Plant Services	Indirect evidence	Melrose Park, IL, United StatesHQ checked Sep 20, 2026	201-500	1,463 contacts →
	Indirect 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 20, 2026
4	Shermco Industries	Partial evidence	Irving, TX, United StatesHQ checked Sep 20, 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 20, 2026
5	Andritz Hydro	Partial evidence	Vienna, GermanyHQ checked Sep 20, 2026	5,001-10,000	1,048 contacts →
	Partial evidence “From the historic pioneers of technology to a modern global market leader ANDRITZ Hydropower is one of the world's leading suppliers of electromechanical equipment and services…” Source: RevenueBase Database · checked Sep 20, 2026
6	Data Engenharia	Indirect evidence	Sarzedo, BrazilHQ checked Sep 20, 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 20, 2026
7	Swire Renewable Energy	Partial evidence	Aarhus, DenmarkHQ checked Sep 20, 2026	201-500	488 contacts →
	Partial evidence “Leading global renewable energy inspection, repair and maintenance service provider for wind turbine manufacturers and wind farm owners, providing services and expertise to all…” Source: RevenueBase Database · checked Sep 20, 2026
8	Babcock Power	Indirect evidence	Danvers, MA, United StatesHQ checked Sep 20, 2026	501-1,000	476 contacts →
	Indirect evidence “Finding a single capable partner to support both large- and small-scale power generation needs can be challenging.” Source: RevenueBase Database · checked Sep 20, 2026
9	GEV Wind Power	Partial evidence	Hull, United KingdomHQ checked Sep 20, 2026	501-1,000	440 contacts →
	Partial evidence “GEV Wind Power is the global leading wind turbine maintenance & repair specialist.” Source: RevenueBase Database · checked Sep 20, 2026
10	Quartzelec Limited	Indirect evidence	Rugby, United KingdomHQ checked Sep 20, 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 20, 2026
11	Md&a	Indirect evidence	Latham, NY, United StatesHQ checked Sep 20, 2026	501-1,000	379 contacts →
	Indirect 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 20, 2026
12	RWG Repair & Overhauls	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 20, 2026	201-500	316 contacts →
	Indirect evidence “RWG (Repair & Overhauls) Limited is a Siemens Energy business.” Source: RevenueBase Database · checked Sep 20, 2026
13	Taw, An IPS Company	Indirect evidence	Greenville, SC, United StatesHQ checked Sep 20, 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 20, 2026
14	Flovel Energy Private Limited	Partial evidence	Faridabad, IndiaHQ checked Sep 20, 2026	201-500	260 contacts →
	Partial evidence “FLOVEL name has been synonymous with the hydropower sector for over four decades.” Source: RevenueBase Database · checked Sep 20, 2026
15	Hydro Exploitation SA	Indirect evidence	Sitten, SwitzerlandHQ checked Sep 20, 2026	501-1,000	257 contacts →
	Indirect evidence “The company HYDRO Exploitation SA is a service provider that specialises in the operation of electrical installations and hydroelectric facilities.” Source: RevenueBase Database · checked Sep 20, 2026
16	TEIC	Indirect evidence	Duncan, SC, United StatesHQ checked Sep 20, 2026	51-200	252 contacts →
	Indirect evidence “Serving Energy Utilities, Renewable Power providers, and Industrial Manufacturing leaders.” Source: RevenueBase Database · checked Sep 20, 2026
17	Transcanada Turbines	Partial evidence	Airdrie, AB, CanadaHQ checked Sep 20, 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 20, 2026
18	Howden Maintenance Partners	Partial evidence	Zwijndrecht, BelgiumHQ checked Sep 20, 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 20, 2026
19	Pt. Taka Turbomachinery Indonesia	Indirect evidence	Bandung, IndonesiaHQ checked Sep 20, 2026	51-200	208 contacts →
	Indirect 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 20, 2026
20	LUZ Energy Engenharia Ltda. - EPP	Indirect evidence	Assis, BrazilHQ checked Sep 20, 2026	51-200	201 contacts →
	Indirect evidence “Luz Energy Engenharia Ltda- Epp is a civil engineering company based out of R Orozimbo Leao De Carvalho, 223, Assis, São Paulo, Brazil.” Source: RevenueBase Database · checked Sep 20, 2026
21	OFS	Indirect evidence	Naas, IrelandHQ checked Sep 20, 2026	51-200	193 contacts →
	Indirect 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 20, 2026
22	Hacker Industrial Ltda	Indirect evidence	Xanxerê, BrazilHQ checked Sep 20, 2026	201-500	193 contacts →
	Indirect evidence “Há 70 anos, sendo referência em Turbinas e serviços para hidrelétricas, promovendo soluções eficientes e inovadoras em projetos de engenharia de alta complexidade, cuidando do…” Source: RevenueBase Database · checked Sep 20, 2026
23	Full Circle Wind Services	Partial evidence	Amersfoort, NetherlandsHQ checked Sep 20, 2026	201-500	176 contacts →
	Partial evidence “Welcome to Full Circle Wind Services, the independent, multi-brand turbine operations, maintenance, and repair service for every scale of onshore wind operation.” Source: RevenueBase Database · checked Sep 20, 2026
24	B Fouress Private Limited BFL , Bangalore	Indirect evidence	Hoskote, IndiaHQ checked Sep 20, 2026	201-500	166 contacts →
	Indirect evidence “B Fouress Private Limited (BFL), based in Bangalore, India, was established in 1985 as Boving Fouress Private Limited through a joint venture with Boving UK.” Source: RevenueBase Database · checked Sep 20, 2026
25	National Electric Coil	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 20, 2026	501-1,000	153 contacts →
	Indirect 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 20, 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: hydropower 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 hydropower maintenance services.
Partial evidence: Its own public description names part of hydropower maintenance services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydropower 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 1,721 hydropower maintenance services worldwide

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Hydropower maintenance services worldwide at a glance

As of Sep 20, 2026

22.1%Verified-email coverage

25.7Average 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

552

11-50

664

51-200

314

201-500

100

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 hydropower 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 hydropower maintenance services are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “hydropower 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 hydropower 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 hydropower 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, 9,777 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 20, 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.

Hydropower maintenance services by location

12 lists · largest first

Every Hydropower 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 hydropower 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 hydropower maintenance services are there worldwide?

RevenueBase identified 1,721 hydropower 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?

Voith Hydro, headquartered in Heidenheim, tops this list with the largest team on record.

Which country has the most hydropower maintenance services?

Brazil leads with 190 companies, followed by the United States (178) and India (138). Every hydropower maintenance services list by country and city is linked on this page.

Which city has the most hydropower maintenance services?

Sao Paulo leads with 16 headquartered companies, followed by Tehran (15) and Istanbul (14).

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 9,777 verified decision-maker contacts tracked across these 1,721 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 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 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.