Company lists · Data refreshed September 2026

Top 18 Independent power producers based in the United States

RevenueBase identified 27 independent power producers headquartered in the United States as of September 2026 and tracks 9,254 professional contacts across them, including 2,911 with verified work emails. Houston is the largest hub.

This list covers independent power producers 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 20, 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 20, 2026 86% judged on-target in blind review
27Companies
9,254Contacts tracked
2,911Verified emails
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The 18 largest independent power producers based in the United States

Ranked by team size
Top 18 of 27 independent power producers based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to independent power producers: 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 evidenceIrving, TX, United StatesHQ checked Sep 20, 20265,001-10,0002,466 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 20, 2026
2Indirect evidenceHouston, TX, United StatesHQ checked Sep 20, 20261,001-5,0002,112 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 20, 2026
3Strong evidenceDedham, MA, United StatesHQ checked Sep 20, 2026201-500153 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 20, 2026
4Strong evidenceSan Diego, CA, United StatesHQ checked Sep 20, 20261,001-5,00073 contacts →

Strong evidence

“EDF Renewables North America is a market leading independent power producer and service provider with 35+ years of expertise in renewable energy.”

Source: RevenueBase Database · checked Sep 20, 2026
5Indirect evidencePrinceton, NJ, United StatesHQ checked Sep 20, 202651-20066 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
6Strong evidenceDurham, NC, United StatesHQ checked Sep 20, 202651-20057 contacts →

Strong evidence

“Heelstone Energy is a leading independent power producer developer with expertise in developing, financing, constructing, operating, and maintaining solar photovoltaic, wind, and…”

Source: RevenueBase Database · checked Sep 20, 2026
7Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 20, 202611-5053 contacts →

Strong evidence

“Linea Energy is a newly-formed Independent Power Producer aiming to change the status quo of how clean energy is developed and financed to rapidly increase the speed of deployment.”

Source: RevenueBase Database · checked Sep 20, 2026
8Strong evidenceWakefield, MA, United StatesHQ checked Sep 20, 202611-5048 contacts →

Strong evidence

“Agilitas Energy is the largest fully integrated independent power producer (IPP) in the Distributed Generation (DG) sector with a full range of asset classes, including solar…”

Source: RevenueBase Database · checked Sep 20, 2026
9Strong evidenceHouston, TX, United StatesHQ checked Sep 20, 202611-5045 contacts →

Strong evidence

“Conduit Power is an Independent Power Producer (IPP) and services platform dedicated to delivering total power solutions for commercial and industrial customers.”

Source: RevenueBase Database · checked Sep 20, 2026
10Strong evidenceLarkspur, CA, United StatesHQ checked Sep 20, 202611-5044 contacts →

Strong evidence

“Solar Power Partners, Inc.(SPP), an independent solar power producer, helps businesses, institutions, municipalities and utility energy users effectively obtain solar power.”

Source: RevenueBase Database · checked Sep 20, 2026
11Indirect evidenceBuffalo Grove, IL, United StatesHQ checked Sep 20, 202651-20032 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
12Partial evidenceAnchorage, United StatesHQ checked Sep 20, 202611-5028 contacts →

Partial evidence

“TDX Power is a leading energy-generation and energy-services provider.”

Source: RevenueBase Database · checked Sep 20, 2026
13Indirect evidenceTerre Haute, IN, United StatesHQ checked Sep 20, 2026501-1,00025 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 20, 2026
14Indirect evidenceManchester, NH, United StatesHQ checked Sep 20, 202611-5023 contacts →

Indirect evidence

“To provide local, reliable, and renewable clean energy production to our communities and our stakeholders by establishing a corporate culture of integrated safety practices…”

Source: RevenueBase Database · checked Sep 20, 2026
15Strong evidenceHouston, TX, United StatesHQ checked Sep 20, 20261-1014 contacts →

Strong evidence

“WattBridge Energy is a Houston, Texas-based global independent power producer.”

Source: RevenueBase Database · checked Sep 20, 2026
16Indirect evidenceReno, NV, United StatesHQ checked Sep 20, 20261-1012 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 20, 2026
17Strong evidenceJersey City, NJ, United StatesHQ checked Sep 20, 202611-505 contacts →

Strong evidence

“InventivEnergy is an Independent Power Producer and Energy sector consulting firm with a team of professionals that has a long history of working closely with Private Equity to…”

Source: RevenueBase Database · checked Sep 20, 2026
18Strong evidenceCornelius, United StatesHQ checked Sep 20, 202611-501 contacts →

Strong evidence

“We are an Independent Power Producer that develops, owns and operates solar farms across the Southeast.”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 18 of 27 independent power producers based in the United States

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Independent power producers based in the United States at a glance

As of Sep 20, 2026
31.5%Verified-email coverage
342.7Average contacts per company
11-50Median size (employees)
14.8%Largest-city concentration · Houston
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
6
11-50
10
51-200
4
201-500
2
501-1,000
1
1,001-5,000
2
5,001-10,000
1
10001+
1

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 27 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 independent power producers, 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 “independent power producers”. 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 independent power producers), 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 independent power producers, 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, 2,911 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.

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 independent power producers, 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 independent power producers are there based in the United States?

RevenueBase identified 27 independent power producers 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?

Vistra Corp, headquartered in Irving, tops this list with the largest team on record.

Which city has the most independent power producers?

Houston leads with 4 headquartered companies, followed by Durham (2) and Anchorage (1).

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 2,911 verified decision-maker contacts tracked across these 27 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.