Company lists · Data refreshed November 2026

Top 25 Energy equity investors based in the United States

RevenueBase identified 794 company matches for energy equity investors associated with the United States as of November 2026 and tracks 13,945 professional contacts across them, including 6,745 with verified work emails. Houston is the largest hub.

This list covers company matches for energy equity investors associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
794Companies
13,945Contacts tracked
6,745Verified emails
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The 25 largest energy equity investors based in the United States

Ranked by team size
Top 25 of 794 company matches for energy equity investors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMiami, NY, United StatesHQ recorded Nov 6, 2026501-1,0001,407 contacts →

Exact match

“H.I.G.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchStamford, UT, United StatesHQ recorded Nov 6, 2026201-500658 contacts →

Exact match

“Castleton Commodities International is at the cutting edge of energy trading and infrastructure asset investing backed by the best minds in the industry and powered by deep…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026201-500556 contacts →

Exact match

“Founded in 1990, LS Power is a premier development, investment, and operating company focused on the North American power and energy infrastructure sector, with leading platforms…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMiami, FL, United StatesHQ recorded Nov 6, 2026201-500466 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchDallas, TX, United StatesHQ recorded Nov 6, 2026501-1,000386 contacts →

Exact match

“Scout Energy Partners Scout is a private investment firm, acquiring and operating energy assets for institutional partners.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchTulsa, TX, United StatesHQ recorded Nov 6, 2026201-500362 contacts →

Exact match

“Vital Energy is committed to energizing human potential.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchValhalla, NY, United StatesHQ recorded Nov 6, 2026201-500305 contacts →

Exact match

“Who We Are Con Edison Development develops, owns and operates renewable and energy infrastructure projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAnnapolis, NY, United StatesHQ recorded Nov 6, 202651-200231 contacts →

Exact match

“HASI invests in sustainable infrastructure assets advancing the energy transition.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchAustin, TX, United StatesHQ recorded Nov 6, 202651-200229 contacts →

Exact match

“WhiteWater is a management owned, Austin based infrastructure company founded in 2016.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchDallas, OK, United StatesHQ recorded Nov 6, 202651-200208 contacts →

Exact match

“Stronghold Investment Management is an investment manager, focused on energy and natural resources, fortified by an experienced operating and technical team.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202651-200195 contacts →

Exact match

“Founded in 1998, Quantum Capital Group is a leading provider of private equity, credit, and venture capital to the global energy and energy transition industry, having managed…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-200169 contacts →

Exact match

“Madison Energy Infrastructure is on a mission to modernize energy for industry and communities where it matters most.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202651-200149 contacts →

Exact match

“Formed in 2005, Lime Rock Resources acquires, operates, and improves lower-risk oil and gas properties in the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchChicago, NY, United StatesHQ recorded Nov 6, 202651-200141 contacts →

Exact match

“Valor Equity Partners is an operational growth investment firm focused on non-control and control investments in high growth companies across various stages of development.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchFort Worth, TX, United StatesHQ recorded Nov 6, 202651-200139 contacts →

Exact match

“Starting in 2014, Blackbeard has become one of the largest privately-held energy producers in the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSummit, CA, United StatesHQ recorded Nov 6, 202651-200137 contacts →

Exact match

“ECP (Energy Capital Partners) is an investor in critical infrastructure focused on electrification, decarbonization, reliability and sustainability.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-200132 contacts →

Exact match

“As a multi-strategy investment manager and independent power producer, Greenbacker Renewable Energy Company (Greenbacker) is empowering a sustainable world by connecting…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchNew York, NY, United StatesHQ recorded Nov 6, 20261,001-5,000126 contacts →

Exact match

“Brookfield is invested in long-life, high-quality assets and businesses around the world that form the backbone of the global economy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202651-200125 contacts →

Exact match

“Founded in 2017, Ara Partners is a global private markets firm focused on decarbonizing the industrial economy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-200119 contacts →

Exact match

“Speed and efficiency are the cornerstones of climate finance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchBoston, MA, United StatesHQ recorded Nov 6, 202651-200115 contacts →

Exact match

“Advanced Power is a privately owned company that develops, owns, and manages modern power generation and related infrastructure projects throughout Europe and North America.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchNew York, United StatesHQ recorded Nov 6, 202651-20090 contacts →

Exact match

“APL Group is a privately held firm that invests in real estate, renewable energy, digital infrastructure, and private equity transactions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchTampa, NY, United StatesHQ recorded Nov 6, 202611-5088 contacts →

Exact match

“PEI Global Partners is an investment bank specializing in Power, Energy and Infrastructure transactions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchChicago, CA, United StatesHQ recorded Nov 6, 202651-20088 contacts →

Exact match

“S2G Investments is a multi-asset investment firm focused on scaling durable, market-defining businesses across food & agriculture, energy, and oceans.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchNew York, TX, United StatesHQ recorded Nov 6, 202611-5088 contacts →

Exact match

“WE ARE CAPITAL SOLUTIONS PROVIDERS We’re building a diversified portfolio of investments, backed by hard asset collateral, supporting innovation in infrastructure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 794 energy equity investors based in the United States

See the full list, filter by size, metro and specialty, and access 6,745 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy equity investors based in the United States at a glance

As of Nov 6, 2026
48.4%Verified-email coverage
17.6Average contacts per company
1-10Median size (employees)
13.9%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
442
11-50
258
51-200
62
201-500
16
501-1,000
7
1,001-5,000
4

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 794 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “energy equity investors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 6,745 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “energy equity investors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy equity investors are there based in the United States?

RevenueBase identified 794 company matches for energy equity investors associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

H.I.G. Capital tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most energy equity investors?

Houston leads with 110 company records, followed by New York (103) and Dallas (51).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 6,745 professional contacts with verified work emails tracked across these 794 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.