Top 10: Energy Companies in North America

According to the IEA, North America accounted for 17% of the global energy share in 2023, with the US making up the large majority of the supply.

Companies across the region have been working to innovate and develop new technological solutions to meet the growing energy needs of the continent and supporting the clean energy transition.

Energy Digital has ranked the top 10 largest energy companies in North America by market capitalisation.

10. Williams Companies

Market cap: US$73.62bn
CEO: Chad Zamarin
​​​​​​​HQ: Tulsa, Oklahoma, US

Williams Companies handles one third of natural gas used in the US, providing infrastructure to safely deliver natural gas products to customers.

It aims to meet the need for clean, affordable and reliable energy.

The company has expanded its operations into solar energy, installing solar panels to help drive down its emissions.

This project will allow solar energy to be stored and accessed when energy pricing is highest, providing a cheaper and lower emissions energy source.

9. Duke Energy

Market cap: US$96.11bn
CEO: Lynn Good
​​​​​​​HQ: Charlotte, North Carolina, US

Duke Energy is one of the largest energy holding companies in the US, with its electric utilities serving 8.6 million customers across the southeastern states.

It has set up the Duke Energy Foundation, which supports the needs of communities where the company’s customers live and work.

The Foundation is funded by Duke Energy shareholders, providing more than US$30m annually to those in need.

The company is working on creating a smarter energy grid which could make the energy supply more reliable and allow for cleaner energy.

8. Southern Company

Market cap: US$99.2bn
CEO: Chris Womack
​​​​​​​HQ: Atlanta, Georgia, US

With electric companies in three states and natural gas companies in four states, Southern Company aims to distribute a range of energy sources and infrastructure.

It plans to reach net zero emissions by 2050 and advance clean energy solutions by investing in research and development.

The company’s sustainability initiatives include reducing water usage and minimising and managing waste effectively to reduce its impact on the environment.

Operating mainly in the Southeast US, its companies deliver reliable and affordable energy to nine million customers.

7. Enbridge

Market cap: US$105.05bn
CEO: Gregory Ebel
​​​​​​​HQ: Calgary, Canada

Enbridge’s goal is to be the first-choice energy delivery company in North America for customers, investors, regulators and employees.

It plans to help accelerate the global energy transition through ethical and sustainable methods, including advancing renewable natural gas and carbon capture technologies.

The company provides opportunities for students to start building their careers in the energy sector with its events and sessions.

Enbridge’s President and CEO, Gregory Ebel, says on LinkedIn: “This is an exciting time for the energy industry.

“The next generation of talent will play a critical role in shaping what comes next.”

6. ConocoPhillips

Market cap: US$108.79bn
CEO: Ryan Lance
​​​​​​​HQ: Houston, Texas, US

While headquartered in the US, ConocoPhillips operates across 15 countries, exploring and producing oil and natural gas.

It has a 60-year history leading the liquefied natural gas (LNG) industry, assisting in opening the Atlantic and Asia Pacific markets.

ConocoPhillips played a key role in developing the technologies needed to produce, transport and market LNG, which is now a vital global resource.

The company operates approximately 27,991 miles of oil, natural gas, liquefied petroleum gas and water pipelines throughout North America, the North Sea and the Asia Pacific region.

5. Constellation Energy

Market cap: US$112.94bn
CEO: Joseph Dominguez
​​​​​​​HQ: Baltimore, Maryland, US

Constellation Energy is the largest producer of reliable, clean, carbon-free energy in the US.

The business’ fleet of nuclear, hydro, wind and solar generation facilities provides 10% of all clean power on the US grid, powering more than 16 million homes.

In 2025, it partnered with Meta to sign a 20 year power purchase agreement to help support Meta’s clean energy goals.

This partnership aims to provide 1,121 megawatts of emissions-free nuclear energy to the area around Constellation’s power plant in Clinton, Illinois.

4. GE Vernova

Market cap: US$162.22bn
CEO: Scott Strazik
​​​​​​​HQ: Cambridge, Massachusetts, US

GE Vernova says its mission is “continuing to electrify to thrive and decarbonise the world”.

For the company, this involves building a sustainable electric power system by bringing together grid technologies and accelerating the global transition to renewable energy.

GE Vernova’s technology base helps to generate one quarter of the world’s electricity, thanks to its 75,000 employees in more than 100 countries.

Scott Strazik, CEO of GE Vernova, says: “We are united by a single, urgent purpose to electrify and decarbonise the planet, and together, we have the energy to change the world.”

3. NextEra Energy

Market cap: US$176.89bn
CEO: John W. Ketchum
​​​​​​​HQ: Juno Beach, Florida, US

Across North America, NextEra Energy has an operational presence in 49 US states and four Canadian provinces.

Its two primary companies are Florida Power & Light Company (FPL) and NextEra Energy Resources, which provide power generation and infrastructure solutions.

FPL’s energy mix is 73% natural gas, while NextEra Energy Resources produces 66% wind energy.

NextEra Energy plans to continue transforming its company and the industry by developing new technologies, continuing to operate its emissions-free nuclear facilities and expanding its renewables portfolio.

In 2022, it set its industry-leading goal to be carbon emissions free by no later than 2045, with zero Scope 1 and 2 emissions.

To reach these goals, the company is working on delivering a carbon-free future to its customers, while keeping electric bills as low as possible.

2. Chevron

Market cap: US$303.51bn
CEO: Mike Wirth
​​​​​​​HQ: Houston, Texas, US

Chevron says its purpose is to provide affordable, reliable and cleaner energy, to enable human progress.

Its operations mainly focus on helping to meet the world’s growing demand for energy through oil and natural gas.

It aims to become a leader in lower carbon intensity oil, products and natural gas, as well as advance new products and solutions that can reduce carbon emissions in major global industries.

As well as producing crude oil and natural gas, Chevron also manufactures transport fuels, lubricants, petrochemicals and additives.

The company plans to expand further and grow new business in renewable fuels, hydrogen and carbon capture.

Mike Wirth, CEO of Chevron, says: “Many solutions will be needed to build the lower carbon energy system of the future.

“The strengths we have today – experience, expertise, reach and partnerships – are important to innovating and scaling the solutions of tomorrow.”

1. ExxonMobil

Market cap: US$490.18bn
CEO: Darren Woods
​​​​​​​HQ: Houston, Texas, US

ExxonMobil owns an industry-leading portfolio of energy resources and is one of the world’s largest integrated fuels, lubricants and chemical companies.

It operates in more than 56 countries globally, with a team of 61,000 scientists, engineers, researchers, professionals and other employees.

The multinational company is focused on meeting the world’s needs for energy and reducing greenhouse gas emissions.

Its global portfolio means that its operations take place in some remote and sensitive environments, including areas of high biodiversity or water scarcity.

ExxonMobil cares for ecosystems and aims to avoid socioeconomic impacts related to land use.

It works to strengthen energy supply security while innovating in lower emission fuels and transportation technologies.

ExxonMobil’s CEO, Darren Woods, says: “As we look ahead, we’ve built a long runway of value creation.

“We’re confident we’ll deliver on the plans we laid out to generate significantly more earnings and cash – not only to 2030, but beyond.”