Company lists · Data refreshed September 2026
Top 25 Thermal power generation companies based in the United States
RevenueBase identified 56 thermal power generation companies headquartered in the United States as of September 2026 and tracks 23,180 professional contacts across them, including 8,743 with verified work emails. Houston is the largest hub.
This list covers thermal power generation 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 22, 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 thermal power generation 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 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,700 contacts → | ||||
Partial evidence “GE Vernova is a planned, purpose-built global energy company that includes Power, Wind, and Electrification businesses and is supported by its accelerator businesses of Advanced…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,466 contacts → | ||||
Strong 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 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,906 contacts → | ||||
Strong evidence “Luminant, a subsidiary of Vistra Energy, is a competitive power generation business, including mining, wholesale marketing and trading, and development operations.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,755 contacts → | ||||
Indirect evidence “We are a growth-oriented, vertically integrated energy company with a mission of improving life with energy and a vision to be the energy partner of choice.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 476 contacts → | ||||
Strong evidence “Finding a single capable partner to support both large- and small-scale power generation needs can be challenging.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 319 contacts → | ||||
Strong evidence “IHI Power Services Corp.(IPSC) provides operations, maintenance, and management services to the US power generation industry.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 153 contacts → | ||||
Strong 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 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 146 contacts → | ||||
Partial evidence “L&S offers legendary service to customers who produce power or use it to drive their business.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 93 contacts → | ||||
Strong 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 22, 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 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 54 contacts → | ||||
Strong evidence “AEI owns and operates interests in multiple power generation assets as well as natural gas transportation and distribution businesses in emerging markets.” Source: RevenueBase Database · checked Sep 22, 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 22, 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 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 28 contacts → | ||||
Strong evidence “TDX Power is a leading energy-generation and energy-services provider.” Source: RevenueBase Database · checked Sep 22, 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 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 11 contacts → | ||||
Partial evidence “PARAGON POWER, LLC is a company based out of 5002 SOUTH 36TH STREET, PHOENIX, Arizona, United States.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 6 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 5 contacts → | ||||
Indirect evidence “Black Belt Energy is an utilities company based out of 2003 College Ave, Jackson, AL, United States.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 5 contacts → | ||||
Partial evidence “Texas Municipal Power Agency operates the Gibbons Creek Steam Electric Station which is a coal fired steam electric plant.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Indirect evidence “A Charge Enterprises Company” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Partial evidence “Power plant engineering, development, operations” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 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: thermal power generation 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 thermal power generation companies.
- Partial evidence
- Its own public description names part of thermal power generation companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name thermal power generation 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 56 thermal power generation companies based in the United States
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Thermal power generation companies based in the United States at a glance
As of Sep 22, 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 56 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 thermal power generation 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 “thermal power generation 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 thermal power generation 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 thermal power generation 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, 8,743 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 22, 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 thermal power generation 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 thermal power generation companies are there based in the United States?
RevenueBase identified 56 thermal power generation 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 thermal power generation companies?
Houston leads with 9 headquartered companies, followed by Anchorage (2) and Atlanta (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 8,743 verified decision-maker contacts tracked across these 56 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 22, 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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