Company lists · Data refreshed September 2026
Top 25 Hydropower plant maintenance companies worldwide
RevenueBase identified 999 hydropower plant maintenance companies worldwide as of September 2026 and tracks 26,362 professional contacts across them, including 5,078 with verified work emails. Brazil is the largest market and Sao Paulo the largest hub.
This list covers hydropower plant maintenance 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 hydropower plant maintenance 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 hydropower plant maintenance companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,843 contacts → | ||||
Strong 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. | |||||
| 2 | 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, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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, 2026Thanks. The Data Team will review it. | |||||
| 4 | 269 contacts → | ||||
Indirect evidence “Basically it is a hydro power comapny.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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, 2026Thanks. The Data Team will review it. | |||||
| 6 | 211 contacts → | ||||
Partial evidence “GLOBAL Hydro is the primary contact worldwide for hydropower technologies and secures a liveable environment for the next generations due to innovative solutions.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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, 2026Thanks. The Data Team will review it. | |||||
| 8 | 203 contacts → | ||||
Strong evidence “Jubail Operations & Maintenance Company (JOMEL) is one of the largest, most sophisticated, efficient and environment friendly power & desalination plants founded in 2008…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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, 2026Thanks. The Data Team will review it. | |||||
| 12 | 144 contacts → | ||||
Indirect evidence “Somos una empresa fundada en el año 1975, especializada en el área de generación eléctrica.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 132 contacts → | ||||
Indirect evidence “Agrosonda es una compañía especializada en proyectos de construcción, montajes electromecánicos, obras civiles y O&M.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 131 contacts → | ||||
Indirect evidence “Established in 1960, Electric Motor and Contracting remains one of the largest independently owned electric motor and pump repair shops in the U.S.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 125 contacts → | ||||
Indirect evidence “We are turbine experts with over 60 year experience in tailored water to wire solutions.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 123 contacts → | ||||
Indirect evidence “Shree Abirami Enggineering Works has consolidated its position in the Indian electrical industry as a Re-Manufacturer of a wide range of Transformers and Hydro Generators, which…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 121 contacts → | ||||
Indirect evidence “Empresa líder en el servicio integral especializado de equipos de transformación de energía, experta en los sectores Industrial, Eléctrico, Petroquímico y Petróleo & Gas.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 115 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 115 contacts → | ||||
Indirect evidence “Proterm Energy was founded by Mr.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 114 contacts → | ||||
Indirect evidence “Eléctricas de Medellín es la primera compañía del grupo ETHUSS, nace en 1965, prestando servicios de ingeniería, mantenimiento, operación, concesiones y construcción de líneas de…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 112 contacts → | ||||
Indirect evidence “Formerly known as Siemens Westinghouse, we specialize in MRO, engineering, design, supply, installation, testing and commissioning of electrical and mechanical equipment and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 109 contacts → | ||||
Indirect evidence “Excellence Driven by Passion.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 107 contacts → | ||||
Partial evidence “Power Services Group (PSG) is the leading US-owned, independent provider of turnkey maintenance, repair, and overhaul solutions for steam and gas turbines.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 107 contacts → | ||||
Indirect evidence “Somos una empresa de servicios dedicada a ofrecer soluciones en el área de: SERVICIO ESPECIALIZADO DE PERSONAL SERVICIOS DE CAMPO Evaluación, Inspección y Mantenimiento de…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 95 contacts → | ||||
Partial evidence “Indian Rayon Unit Of Aditya Birla Group Service Provider of hydraulic power, energy conservation & thermal power plant in Junagadh, Gujarat.” 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: hydropower plant maintenance 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 hydropower plant maintenance companies.
- Partial evidence
- Its own public description names part of hydropower plant maintenance companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name hydropower plant maintenance 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 999 hydropower plant maintenance companies worldwide
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Hydropower plant maintenance 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 hydropower plant maintenance 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 hydropower plant maintenance companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “hydropower plant maintenance 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 hydropower plant maintenance 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 hydropower plant maintenance 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, 5,078 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 plant maintenance companies by location
8 lists · largest firstEvery Hydropower plant maintenance companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Hydropower plant maintenance companies based in Brazil122
- Hydropower plant maintenance companies based in the United States96
- Hydropower plant maintenance companies based in India87
- Hydropower plant maintenance companies based in Italy43
- Hydropower plant maintenance companies based in France34
- Hydropower plant maintenance companies based in Canada33
- Hydropower plant maintenance companies based in Germany31
- Hydropower plant maintenance companies based in the United Kingdom25
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 plant maintenance 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 hydropower plant maintenance companies are there worldwide?
RevenueBase identified 999 hydropower plant maintenance 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?
Dietsmann, headquartered in Monaco, tops this list with the largest team on record.
Which country has the most hydropower plant maintenance companies?
Brazil leads with 122 companies, followed by the United States (96) and India (87). Every hydropower plant maintenance companies list by country and city is linked on this page.
Which city has the most hydropower plant maintenance companies?
Sao Paulo leads with 10 headquartered companies, followed by Tehran (7) and Karachi (6).
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 5,078 verified decision-maker contacts tracked across these 999 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.