Company lists · Data refreshed September 2026
Top 25 Hydroelectric maintenance and repair companies worldwide
RevenueBase identified 1,978 hydroelectric maintenance and repair companies worldwide as of September 2026 and tracks 48,295 professional contacts across them, including 10,862 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers hydroelectric maintenance and repair companies 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 hydroelectric maintenance and repair companies 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.
The 25 largest hydroelectric maintenance and repair companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,267 contacts → | ||||
Indirect evidence “Voith Hydro is one of the leading industrial partners for #PowerStation operators - worldwide.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,221 contacts → | ||||
Strong 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, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,048 contacts → | ||||
Indirect 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, 2026Thanks. The Data Team will review it. | |||||
| 6 | 632 contacts → | ||||
Indirect evidence “Our Vision: To provide world class solutions for the renovation and modernization of power plants & other related businesses areas whilst improving our clients environmental…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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, 2026Thanks. The Data Team will review it. | |||||
| 9 | 449 contacts → | ||||
Indirect evidence “A COTESA é especialista na Engenharia de Operação & Manutenção de ativos elétricos de Geração e Transmissão de energia.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 440 contacts → | ||||
Strong evidence “GEV Wind Power is the global leading wind turbine maintenance & repair specialist.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 345 contacts → | ||||
Indirect evidence “TWMC is a leading manufacturer of electric motors and generators, with a broad selection ranging from ¼ HP to HP.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 316 contacts → | ||||
Partial evidence “RWG (Repair & Overhauls) Limited is a Siemens Energy business.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 305 contacts → | ||||
Indirect evidence “Excellence in creating innovative solutions for the supply, control and use of energy.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 288 contacts → | ||||
Partial evidence “RMS Energy leads the industry by energizing the future through reliable power solutions, offering comprehensive installation and maintenance services on 480V to 765kV electrical…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 260 contacts → | ||||
Indirect evidence “FLOVEL name has been synonymous with the hydropower sector for over four decades.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 257 contacts → | ||||
Partial 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, 2026Thanks. The Data Team will review it. | |||||
| 21 | 252 contacts → | ||||
Indirect evidence “Serving Energy Utilities, Renewable Power providers, and Industrial Manufacturing leaders.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 234 contacts → | ||||
Strong 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, 2026Thanks. The Data Team will review it. | |||||
| 23 | 223 contacts → | ||||
Strong 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, 2026Thanks. The Data Team will review it. | |||||
| 24 | 209 contacts → | ||||
Indirect evidence “LH Marthinusen, a division of ACTOM (Pty) Ltd, is B-BBEE Level 1 and one of the largest global operations of it's kind, offering a comprehensive suite of on and off-site…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 208 contacts → | ||||
Indirect evidence “Toshiba America Energy Systems Corporation (TAES), headquartered in Milwaukee, Wisconsin, with major manufacturing and services, provides turbine/generator equipment and services…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
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: hydroelectric maintenance and repair companies. 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 hydroelectric maintenance and repair companies.
- Partial evidence
- Its own public description names part of hydroelectric maintenance and repair companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name hydroelectric maintenance and repair companies. 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 1,978 hydroelectric maintenance and repair companies worldwide
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Hydroelectric maintenance and repair companies worldwide at a glance
As of Sep 20, 2026Companies by employee count
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 hydroelectric maintenance and repair companies, 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 hydroelectric maintenance and repair companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “hydroelectric maintenance and repair companies”. 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 hydroelectric maintenance and repair companies), 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 hydroelectric maintenance and repair companies, 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, 10,862 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.
Hydroelectric maintenance and repair companies by location
13 lists · largest firstEvery Hydroelectric maintenance and repair companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Hydroelectric maintenance and repair companies based in the United States239
- Hydroelectric maintenance and repair companies based in Brazil234
- Hydroelectric maintenance and repair companies based in India148
- Hydroelectric maintenance and repair companies based in Italy93
- Hydroelectric maintenance and repair companies based in France77
- Hydroelectric maintenance and repair companies based in Germany65
- Hydroelectric maintenance and repair companies based in the United Kingdom60
- Hydroelectric maintenance and repair companies based in Canada59
- Hydroelectric maintenance and repair companies based in Spain51
- Hydroelectric maintenance and repair companies based in Mexico50
- Hydroelectric maintenance and repair companies based in the United Arab Emirates30
- Hydroelectric maintenance and repair companies based in Australia27
- Hydroelectric maintenance and repair companies based in Saudi Arabia25
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 hydroelectric maintenance and repair companies, 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 hydroelectric maintenance and repair companies are there worldwide?
RevenueBase identified 1,978 hydroelectric maintenance and repair companies 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 hydroelectric maintenance and repair companies?
The United States leads with 239 companies, followed by Brazil (234) and India (148). Every hydroelectric maintenance and repair companies list by country and city is linked on this page.
Which city has the most hydroelectric maintenance and repair companies?
Sao Paulo leads with 16 headquartered companies, followed by Lima (12) and Tehran (12).
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 10,862 verified decision-maker contacts tracked across these 1,978 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.