Company lists · Data refreshed September 2026
Top 25 Hydroelectric thermal power companies based in the United States
RevenueBase identified 52 hydroelectric thermal power companies headquartered in the United States as of September 2026 and tracks 17,048 professional contacts across them, including 7,201 with verified work emails. Houston is the largest hub.
This list covers hydroelectric thermal power companies headquartered in the United States, 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 15, 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 hydroelectric thermal power companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 5,036 contacts → | ||||
Indirect evidence “High reliability, low prices and high customer satisfaction are cornerstones of our customer commitment, but it doesn't end there.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,478 contacts → | ||||
Partial evidence “NextEra Energy, Inc.(NYSE: NEE) is one of the largest electric power and energy infrastructure companies in North America and is a leading provider of electricity to American…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,466 contacts → | ||||
Partial evidence “Vistra (NYSE: VST) is a leading Fortune 500 integrated retail electricity and power generation company, based in Irving, Texas, that provides essential resources to customers…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,112 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,393 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 6 | 476 contacts → | ||||
Partial evidence “Finding a single capable partner to support both large- and small-scale power generation needs can be challenging.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 7 | 448 contacts → | ||||
Indirect evidence “GenOn Energy, Inc.(NYSE: GEN) is one of the largest competitive generators of wholesale electricity in the United States.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 8 | 381 contacts → | ||||
Indirect evidence “GRDA utilizes a diverse portfolio of electric generation assets to keep rates low and reliability high.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 9 | 319 contacts → | ||||
Partial evidence “IHI Power Services Corp.(IPSC) provides operations, maintenance, and management services to the US power generation industry.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 11 | 153 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 12 | 93 contacts → | ||||
Partial evidence “Alpha Generation manages and operates power generation facilities that are well positioned to provide reliable, secure, safe, and sustainable sources of power and meet the growing…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 13 | 92 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 14 | 90 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 15 | 44 contacts → | ||||
Partial evidence “PSEG Power LLC is an utilities company based out of 80 PARK PLAZA, T-25, Newark, New Jersey, United States.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 16 | 29 contacts → | ||||
Indirect evidence “The City of Ames Electric Services owns and operates two coal fired steam turbines and two fuel oil fired gas turbines as well as the electricity distrobution system to deliver…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 17 | 28 contacts → | ||||
Partial evidence “TDX Power is a leading energy-generation and energy-services provider.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 18 | 25 contacts → | ||||
Indirect evidence “Founded in 1951, Hallador has a long history of strategic growth through a pragmatic, shareholder-driven approach that inspires trust, builds lasting relationships, generates…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 19 | 13 contacts → | ||||
Strong evidence “Central Rivers Power owns and operates 45 hydroelectric power plants with a combined installed capacity of 340 MW across the United States.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 20 | 13 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 21 | 8 contacts → | ||||
Strong evidence “Canyon Hydro builds hydroelectric systems to meet the rigid utility specifications of public and independent power producers.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Indirect evidence “A Charge Enterprises Company” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Partial evidence “Our Mission is to deliver reliable, sustainable, and innovative power generation solutions that empower communities, businesses, and industries to thrive.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Partial evidence “Power plant engineering, development, operations” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 15, 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 thermal power 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 thermal power companies.
- Partial evidence
- Its own public description names part of hydroelectric thermal power companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name hydroelectric thermal power 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 52 hydroelectric thermal power companies based in the United States
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Hydroelectric thermal power companies based in the United States at a glance
As of Sep 15, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 52 companies.
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 thermal power 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 “hydroelectric thermal power 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 thermal power 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 thermal power 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, 7,201 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 15, 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
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 thermal power 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 thermal power companies are there based in the United States?
RevenueBase identified 52 hydroelectric thermal power companies headquartered in the United States 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?
Georgia Power Company, headquartered in Atlanta, tops this list with the largest team on record.
Which city has the most hydroelectric thermal power companies?
Houston leads with 8 headquartered companies, followed by Anchorage (2) and Marquette (2).
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 7,201 verified decision-maker contacts tracked across these 52 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 15, 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.
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