Company lists · Data refreshed September 2026

Top 11 Electric power companies based in Houston, United States

The Houston electric power companies directory contains 27 companies, with 4,821 business contacts and 1,718 email addresses, as of September 2026. Buyers and sales teams can use the directory to identify electric power companies and relevant business contacts. Across the United States, Houston is the largest hub for this category.

Electric power companies generate, transmit, distribute, trade, or sell electricity to residential, commercial, industrial, or public-sector customers. This list covers companies whose primary business involves generating, transmitting, distributing, trading, or selling electric power. Ranked by team size, largest first. Data current as of September 12, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 12, 2026 86% judged on-target in blind review
27Companies
4,821Contacts tracked
1,718Verified emails
2,194Mobile numbers
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The 11 largest electric power companies based in Houston, United States

Ranked by team size
Top 11 of 27 electric power companies based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 12, 2026. RevenueBase Smart Search rates how each company's information relates to electric power companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceHouston, TX, United StatesHQ checked Sep 12, 20261,001-5,0002,112 contacts →

Partial 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 12, 2026
2Indirect evidenceHouston, TX, United StatesHQ checked Sep 12, 20261,001-5,000917 contacts →

Indirect evidence

“Reliant has deep Texas roots.”

Source: RevenueBase Database · checked Sep 12, 2026
3Partial evidenceHouston, TX, United StatesHQ checked Sep 12, 20261,001-5,000448 contacts →

Partial 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 12, 2026
4Partial evidenceHouston, TX, United StatesHQ checked Sep 12, 2026201-500182 contacts →

Partial evidence

“Champion provides award-winning electricity services to residential customers in TX and to commercial and industrial customers in deregulated markets including CT, IL, ME, MD, MA…”

Source: RevenueBase Database · checked Sep 12, 2026
5Partial evidenceHouston, TX, United StatesHQ checked Sep 12, 202651-20093 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 12, 2026
6Indirect evidenceHouston, TX, United StatesHQ checked Sep 12, 202651-20066 contacts →

Indirect evidence

“Founded by small business owners in Houston, we entered our home market of Texas in 2004 with service to homeowners and small businesses.”

Source: RevenueBase Database · checked Sep 12, 2026
7Partial evidenceHouston, TX, United StatesHQ checked Sep 12, 202611-5040 contacts →

Partial evidence

“Dynegy provides wholesale power, capacity and ancillary services to utilities, cooperatives, municipalities and other energy companies in six states in our key U.S.”

Source: RevenueBase Database · checked Sep 12, 2026
8Indirect evidenceHouston, TX, United StatesHQ checked Sep 12, 202651-20019 contacts →

Indirect evidence

“Gridforce Energy Management, LLC, a NAES company was founded in in Houston, Texas.”

Source: RevenueBase Database · checked Sep 12, 2026
9Strong evidenceHouston, TX, United StatesHQ checked Sep 12, 2026201-50016 contacts →

Strong evidence

“HENRY POWER ELECTRIC LLC provides top-notch electrical services, starting in Houston and expanding to cities across Texas, Utah, Arizona, and California, with plans for further…”

Source: RevenueBase Database · checked Sep 12, 2026
10Partial evidenceHouston, TX, United StatesHQ checked Sep 12, 20261-103 contacts →

Partial evidence

“Texas, get ready to experience a whole new world of electricity.”

Source: RevenueBase Database · checked Sep 12, 2026
11Partial evidenceHouston, TX, United StatesHQ checked Sep 12, 202611-501 contacts →

Partial evidence

“EPS GROUP, provides a multitude of services and solutions focused to all areas of Power delivery, with headquarters strategically located in Houston Texas, and offices in Panama…”

Source: RevenueBase Database · checked Sep 12, 2026

Showing 11 of 27 electric power companies based in Houston, United States

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Electric power companies based in Houston, United States at a glance

As of Sep 12, 2026
35.6%Verified-email coverage
45.5%Mobile-number coverage
178.6Average contacts per company
51-200Median size (employees)
Sep 12, 2026Page data refreshed

Companies by employee count

1-10
4
11-50
9
51-200
4
201-500
6
1,001-5,000
4

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 14.0d

Company record updated

Median 75.0d

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 electric 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 Houston, United States whose own description of what they do matches “electric 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 electric 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 electric power companies, and records with no verified work email. Companies headquartered outside Houston 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, 1,718 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 12, 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 electric power companies are based in Houston, United States?

The directory contains 27 electric power companies based in Houston, United States as of September 2026.

What do electric power companies do?

Electric power companies generate, transmit, distribute, trade, or sell electricity. Their customers may include households, businesses, industrial organizations, and public-sector entities.

Which city in the United States has the most electric power companies?

Houston leads the United States with 27 headquartered companies, followed by New York (8) and Baltimore (4).

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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.