Company lists · Data refreshed September 2026
Top 25 Hydropower companies based in the United States
This directory lists 100 hydropower companies based in the United States, with contact records for 18,819 people and 9,075 email addresses. New York is the single most-represented city among the companies listed, and the directory was updated in September 2026.
Hydropower companies develop, own, operate, or maintain facilities that generate electricity from moving or stored water. This list covers companies that develop, own, operate, manufacture equipment for, or provide services to hydropower generation facilities. Ranked by team size, largest first. Data current as of September 7, 2026.
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 companies based in the United States
Ranked by team size| # | Company | RevenueBase Smart Search | Contacts | ||
|---|---|---|---|---|---|
| 1 | Indirect evidence | 9,458 contacts → | |||
“Constellation Energy Corporation (Nasdaq: CEG), a Fortune 200 company headquartered in Baltimore, is the nation’s largest producer of reliable, emissions-free energy and a leading…” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 2 | Indirect evidence | 2,112 contacts → | |||
“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…” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 3 | Indirect evidence | 1,393 contacts → | |||
“Santee Cooper is South Carolina’s largest power producer, the largest Green Power generator and the ultimate source of electricity for 2 million people across the state.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 4 | Indirect evidence | 381 contacts → | |||
“GRDA utilizes a diverse portfolio of electric generation assets to keep rates low and reliability high.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 5 | Indirect evidence | 153 contacts → | |||
“Atlantic Power is an independent power producer that owns power generation assets in eleven states in the United States and two provinces in Canada.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 6 | Indirect evidence | 128 contacts → | |||
“Eagle Creek Renewable Energy was founded in 2010 to acquire, enhance and operate small hydroelectric power facilities.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 7 | Indirect evidence | 105 contacts → | |||
“Merced Irrigation District owns, operates and maintains the New Exchequer and McSwain dams, reservoirs, and hydroelectric facilities.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 8 | Indirect evidence | 92 contacts → | |||
“Somos una compañía formada por profesionales altamente calificados, fundada en el año 2010 con más de 10 años de experiencia en el mercado, dedicados a la Fabricación, Diseño…” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 9 | Indirect evidence | 90 contacts → | |||
“Upper Peninsula Power Company (UPPCO) is a regulated electric utility delivering safe, reliable energy to approximately customers in 10 counties across Michigan's Upper Peninsula.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 10 | Indirect evidence | 77 contacts → | |||
“Engineering Our focus is to create designs that maximize turbine capacity and efficiency while eliminating cavitation to meet our customers’ needs.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 11 | Indirect evidence | 57 contacts → | |||
“Proven and reliable underwater power systems that generate energy from free-flowing tides and rivers, ORPC improves people’s lives and their environment through sustainable energy…” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 12 | Indirect evidence | 44 contacts → | |||
“PSEG Power LLC is an utilities company based out of 80 PARK PLAZA, T-25, Newark, New Jersey, United States.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 13 | Indirect evidence | 35 contacts → | |||
“Natel Energy unlocks stranded hydro resources with patented FishSafe™ turbine designs that fit directly into existing civil works across Francis, Kaplan, and propeller…” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 14 | Indirect evidence | 30 contacts → | |||
“Emrgy designs and deploys modular, scalable hydroelectric solutions without the need for construction or dams.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 15 | Strong evidence | 27 contacts → | |||
“GRH is New England’s largest producer of conventional hydropower.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 16 | Strong evidence | 24 contacts → | |||
“Current Hydro is a hydropower developer, owner, and operator focused on unlocking clean energy from America’s existing infrastructure.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 17 | Indirect evidence | 22 contacts → | |||
Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 18 | Indirect evidence | 18 contacts → | |||
“Verterra Energy is reimagining how to harness the power of flowing water on our planet.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 19 | Strong evidence | 16 contacts → | |||
“Obermeyer Hydro is a leading worldwide provider of hydropower and water-control equipment as well as inflatable rubber structures for industrial applications.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 20 | Strong evidence | 15 contacts → | |||
“Rye Development is advancing America’s next generation of pumped storage hydropower, the largest and most proven form of energy storage.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 21 | Indirect evidence | 15 contacts → | |||
“GenH is a hydroelectric technology development company focused on advanced modular power generation.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 22 | Strong evidence | 15 contacts → | |||
“The Low Impact Hydropower Institute (LIHI) is a non-profit 501(c)(3) organization dedicated to reducing the impacts of hydropower generation through the certification of…” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 23 | Indirect evidence | 15 contacts → | |||
“Coevo Energy, Inc.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 24 | Indirect evidence | 13 contacts → | |||
“Central Rivers Power owns and operates 45 hydroelectric power plants with a combined installed capacity of 340 MW across the United States.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 25 | Indirect evidence | 13 contacts → | |||
“Hydro Consulting and Maintenance Services (HCMS) is now a division of Thompson Construction Group, Inc.” Source: company website · checked Sep 7, 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 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 companies.
- Partial evidence
- Its own public description names part of hydropower companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name hydropower 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 100 hydropower companies based in the United States
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Hydropower companies based in the United States at a glance
As of Sep 7, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 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.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “hydropower 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 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 companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- 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, 9,075 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 7, 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.
Frequently asked
How many hydropower companies are based in the United States?
100 hydropower companies are listed based in the United States.
How many contacts are available for hydropower companies?
The directory includes 18,819 contact records and 9,075 email addresses for the listed hydropower companies.
Which city has the most hydropower companies?
New York is the single most-represented city among the companies on this list.
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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.