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Top Oil & Gas Companies

143 Oil & Gas companies, sorted by total funding raised.

143

Companies

$5.6B

Combined Funding

Seed

Top Stage

Indexed tracks 143 Oil & Gas companies that have collectively raised $5.6B in documented funding. The most-funded oil & gas companies tracked include Venture Global and PBF Energy Inc.. Seed is the most common funding stage among oil & gas companies in this dataset.

Venture GlobalIPO

Liquefied natural gas company building large-scale LNG export facilities in Louisiana

Arlington, United States501–1000Energy, Infrastructure
Private Equity·$2.1B·Aug 2019
PBF Energy Inc.IPO

Independent petroleum refiner and supplier operating multiple refineries across the US, producing...

Parsippany, United States1001–5000Energy, Oil & Gas
Corporate Round·$2.0B·Jan 2008
Elk Range Royalties

Active buyer of producing mineral and royalty interests

Dallas, United StatesAsset Management, Oil & Gas
Venture Round·$550.0M·Jun 2026
Riley Exploration PermianIPO

Riley Exploration Permian is a growth-oriented independent oil and natural gas company focused on...

Oklahoma City, United States51–200Energy, Oil & Gas
Venture Round·$350.0M·Jan 2015
Axia Energy

Focused on acquisition and development of oil and gas assets

Highlands Ranch, United States11–50Oil & Gas
Series D·$200.0M
Aspen Energy Partners

Invests in small- to mid-cap oilfield services and technology companies

Arvada, United StatesEnergy, Oil & Gas
Seed·$100.0M·Jan 2016
Clean Energy Fuels Corp.IPO

North America's largest provider of natural gas fueling infrastructure and renewable natural gas ...

Newport Beach, United States501–1000Clean Energy, Energy
Corporate Round·$83.4M·Jun 2016
CarbonextClosed

At Carbonext Inc., we are developing a circularity strategy that retrofits existing architectures...

Houston, United States1–10Clean Tech, Climate Tech
Grant·$50.9M·Jun 2023
Urban Sky

Developing stratospheric Microballoons to capture the freshest, high-res earth observation data.

Denver, United States11–50Artificial Intelligence, Climate Tech
Series B·$39.8M·Feb 2025
Battalion Oil CorporationIPO

Independent energy company focused on acquisition, production, and development of liquids-rich as...

Houston, United States51–200Energy, Oil & Gas
Venture Round·$15.0M·Jan 2026
Pretred

Pretred recycles waste tires and repurposes them into barriers/blocks that are green, competitive...

Aurora, United States11–50Clean Tech, Infrastructure
Grant·$14.2M·Feb 2024
Ecolectro Inc.

R&D company with 5 SBIR/STTR awards from Department of Energy, National Science Foundation.

ITHACA, United States11–50Climate Tech, Clean Tech
Series A·$12.2M·Nov 2024
Cold Pad

Non-intrusive adhesive bonding and fastening solution for construction and structural works.

Paris, FranceConstruction, Maritime
Venture Round·$10.4M·Jan 2023
Graphite Innovation and Technologies

Canada's leading protective marine coatings company specialized in high-performance coatings for ...

Dartmouth, CanadaClean Tech, Climate Tech
Series A·$10.2M·Apr 2023
Interface Fluidics

Extreme Condition Fluid analysis for Carbon Sequestration, Hydrogen, and Oil and Gas. We make fl...

Calgary, Canada11–50Clean Tech, Nanotechnology
Series B·$9.9M·Nov 2021
Pedevco Corp.IPO

Publicly traded energy company engaged in acquisition and development of strategic oil and gas pr...

Houston, United States1–10Energy, Oil & Gas
Corporate Round·$7.7M·Jun 2018
MaverickX

Breakthrough chemical solutions for oil & gas, mining, metals, and water treatment.

11–50Advanced Materials, Oil & Gas
Venture Round·$7.5M·May 2026
Atmio

Operating system for oil and gas methane emissions

Europe11–50Climate Tech, Oil & Gas
Seed·$5.5M·Jun 2024
aliciabots

Robotics start-up building the cheapest and most effective autonomous, robotic hull cleaning solu...

Boston, United StatesArtificial Intelligence, Oil & Gas
Seed·$5.0M·Nov 2024
Noteworthy AI

Noteworthy provides vehicle mounted cameras and AI to help electric utilities collect and analyze...

Stamford, United States11–50Artificial Intelligence, Clean Tech
Seed·$4.7M·Apr 2025
Gopher App

Gophr is an innovative logistics and delivery service platform powered by advanced AI technology.

Lake Charles, United StatesArtificial Intelligence, Industrials
Series A·$4.5M·Feb 2021
Petra Power

Petra Power is a manufacturing company that focuses on Solid Oxide Fuel Cells (SOFC) for APU syst...

SOLON, United States11–50Clean Tech, Climate Tech
Venture Round·$4.0M
SATIM

Providing satellite radar-based intelligence for decision makers.

Kraków, Poland11–50Infrastructure, Insurtech
Series A·$4.0M·Sep 2024
Deepflow AI

Deepflow is a visual inspection platform that empowers industrial manufacturers to automate quali...

Bordeaux, France1–10Artificial Intelligence, Infrastructure
Seed·$3.5M·May 2025
EnviCore

EnviCore aspires to revolutionize current tailings mitigation practices and promote a circular ec...

Calgary, CanadaClean Tech, Climate Tech
Seed·$3.0M·Oct 2024

Frequently Asked Questions

How many Oil & Gas companies are tracked on Indexed?

Indexed tracks 143 Oil & Gas companies, sorted by total funding raised.

How much funding have Oil & Gas companies raised in total?

The Oil & Gas companies tracked by Indexed have collectively raised $5.6B in documented funding.

What are the top-funded Oil & Gas companies?

The most-funded Oil & Gas companies tracked include Venture Global, PBF Energy Inc., Elk Range Royalties.

Who are the top investors in Oil & Gas?

Leading investors active in Oil & Gas include Chevron Technology Ventures, NGP Energy Capital, Baring Vostok Capital.

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