20 Companies Responsible For the Most Carbon Emissions?
Since 1965, it’s estimated over 1.35 trillion metric tons of greenhouse gases have been released into the atmosphere—and over a third can be traced back to just 20 companies.
This week’s chart draws on a dataset from the Climate Accountability Institute, and highlights the companies which have been responsible for the most carbon emissions in the past half-century.
Note: Carbon emissions are measured in MtCO₂e: Megatonnes of CO₂ equivalent (Millions).
The Sum of their Carbon Emissions
Between 1965-2017, the top 20 companies have contributed 480,169 MtCO₂e in total carbon emissions, or 35% of cumulative global emissions. This whopping amount is mostly from the combustion of their products—each company on this chart deals in fossil fuels.
The largest contributor? Saudi Aramco, the national petroleum and natural gas company of Saudi Arabia. Saudi Aramco actually comes in first on another list as well—it’s the most profitable company, making over $304 million daily.
However, this financial gain came at a significant cost: the state-owned giant’s operations have resulted in 59,262 MtCO₂e in carbon emissions since 1965. To put that into perspective, this total is more than six times China’s emissions in 2017 alone (9,838 MtCO₂e).
Explore the full list of companies by location, who owns them, and their total 1965–2017 emissions count below:
|Company||Country||Ownership||All Emissions, MtCO₂e|
|Saudi Aramco||🇸🇦 Saudi Arabia||State-owned||59,262|
|Exxon Mobil||🇺🇸 U.S.||Investor-owned||41,904|
|National Iranian Oil Co.||🇮🇷 Iran||State-owned||35,658|
|Royal Dutch Shell||🇳🇱 Netherlands||Investor-owned||31,948|
|Coal India||🇮🇳 India||State-owned||23,124|
|Petroleus de Venezuela||🇻🇪 Venezuela||State-owned||15,745|
|Peabody Energy||🇺🇸 U.S.||Investor-owned||15,385|
|Abu Dhabi National Oil Co.||🇦🇪 UAE||State-owned||13,840|
|Kuwait Petroleum Corp.||🇰🇼 Kuwait||State-owned||13,479|
|Iraq National Oil Co.||🇮🇶 Iraq||State-owned||12,596|
|Total SA||🇫🇷 France||Investor-owned||12,352|
|BHP Billiton||🇦🇺 Australia||Investor-owned||9,802|
|Total Emissions||480,169 MtCO₂e|
A Greener Business Model?
According to the researchers, all the companies that show up in today’s chart bear some responsibility for knowingly accelerating the climate crisis even after proven scientific evidence.
In fact, U.S.-based Exxon Mobil is currently on trial for misleading investors: the company downplayed the effect of climate change on its profitability, while internal calculations proved to be much larger. It also sowed public doubt on the immense impacts of rising greenhouse gas levels on the planet.
Growing sustainability and environmental concerns threaten the viability of old business models for these corporations, causing many to pivot away from the fossil fuel focus. Take BP for example—originally named British Petroleum, the company embraced “Beyond Petroleum” as its new rallying cry. More recently, it launched a carbon footprint calculator and is committed to keeping its carbon emissions flat into 2025.
The first step to reducing your emissions is to know where you stand. Find out your #carbonfootprint with our new calculator & share your pledge today!— BP (@BP_plc) October 22, 2019
However, the Climate Accountability Institute argues that more can still be done, with the researchers calling for these companies to reduce their fossil fuel production in the near future.
Continued pressure on these “Big Oil” companies to peak their carbon emissions, and urgently increase their renewable energy investment, may help curb the climate crisis before it’s too late.
Correction: A previous version of this article mistakenly reported the total cumulative value of carbon emissions in millions instead of trillions. Both the article and graphic have been updated to reflect the changes accurately.
What’s Made from a Barrel of Oil?
Oil is a building block that makes modern life possible. Here are the proportion of finished products that are created from a barrel of oil.
What Products Are Made from a Barrel of Oil?
From the gasoline in our cars to the plastic in countless everyday items, crude oil is an essential raw material that shows up everywhere in our lives.
With around 18 million barrels of crude oil consumed every day just in America, this commodity powers transport, utilities, and is a vital ingredient in many of the things we use on a daily basis.
This graphic visualizes how much crude oil is refined into various finished products, using a barrel of oil to represent the proportional breakdown.
Barrel of Oil to Functional Fuel and More
Crude oil is primarily refined into various types of fuels to power transport and vital utilities. More than 85% of crude oil is refined into fuels like gasoline, diesel, and hydrocarbon gas liquids (HGLs) like propane and butane.
Along with being fuels for transportation, heating, and cooking, HGLs are used as feedstock for the production of chemicals, plastics, and synthetic rubber, and as additives for motor gasoline production.
|Refined Crude Oil Product||Share of Crude Oil Refined|
|Hydrocarbon gas liquids||2.0%|
Source: Canadian Association of Petroleum Producers
Crude oil not only powers our vehicles, but it also helps pave the roads we drive on. About 4% of refined crude oil becomes asphalt, which is used to make concrete and different kinds of sealing and insulation products.
Although transportation and utility fuels dominate a large proportion of refined products, essential everyday materials like wax and plastic are also dependent on crude oil. With about 10% of refined products used to make plastics, cosmetics, and textiles, a barrel of crude oil can produce a variety of unexpected everyday products.
Personal care products like cosmetics and shampoo are made using petroleum products, as are medical supplies like IV bags and pharmaceuticals. Modern life would look very different without crude oil.
The Process of Refining Crude Oil
You might have noticed that while a barrel of oil contains 42 gallons, it ends up producing 45 gallons of refined products. This is because the majority of refined products have a lower density than crude oil, resulting in an increase in volume that is called processing gain.
Along with this, there are other inputs aside from crude oil that are used in the refining process. While crude oil is the primary input, fuel ethanol, hydrocarbon gas liquids, and other blending liquids are also used.
|U.S. Refiner and Blender Inputs||Share of Total|
|Hydrocarbon gas liquids||3.0%|
The process of refining a 30,000-barrel batch of crude oil typically takes between 12-24 hours, with refineries operating 24 hours a day, 365 days a year. Although the proportions of individual refined products can vary depending on market demand and other factors, the majority of crude oil will continue to become fuel for the world’s transport and utilities.
The Difficulty of Cutting Down on Crude Oil
From the burning of heavy fuels that tarnish icebergs found in Arctic waters to the mounds of plastic made with petrochemicals that end up in our rivers, each barrel of oil and its refined products impact our environment in many different ways.
But even as the world works to reduce its consumption of fossil fuels in order to reach climate goals, a world without crude oil seems unfathomable.
Skyrocketing sales of EVs still haven’t managed to curb petroleum consumption in places like Norway, California, and China, and the steady reopening of travel and the economy will only result in increased petroleum consumption.
Completely replacing the multi-faceted “black gold” that’s in a barrel of oil isn’t possible right now, but as electrification continues and we find alternatives to petrochemical materials, humanity might at least manage to reduce its dependence on burning fossil fuels.
Mapped: Visualizing U.S. Oil Production by State
The U.S. is the largest oil producer in the world. Here we map the share of oil production in the country by all 50 states in 2020.
Mapped: Visualizing U.S. Oil Production by State
In 2018, the United States became the world’s top crude oil producer. It has strongly held this position ever since.
According to the U.S. Energy Information Administration (EIA), the country accounted for nearly 15% of the world’s total oil production in 2020, churning out close to 13 million barrels of crude oil per day—more than Russia or Saudi Arabia.
Although total U.S. oil production declined between 1985 and 2008, annual production increased nearly every year from 2009 through 2019, reaching the highest amount on record in 2019.
The Dominant Oil Producing States
Impressively, 71% of total U.S. oil production came from just five states. An additional 14.6% came from the Gulf of Mexico, which is a federal jurisdiction.
Here are the five states that produce the largest amount of crude oil:
|Share of Total Production|
Rounding the top 10 are states like Alaska, California, Wyoming, Louisiana, and Utah.
Texas is undoubtedly the largest oil-producing state in the United States. In 2020, Texas produced a total of 1.78 billion barrels of oil. Texas is home to the most productive U.S. oil basin, the Permian, routinely accounting for at least 50% of total onshore production. A distant second is North Dakota, which produced about 431.2 million barrels of oil in 2020.
Regional Distribution of U.S. Oil Production
A total of 32 of the 50 U.S. states produce oil. They are divided among five regional divisions for oil production in the U.S., known as the Petroleum Administration for Defense Districts (PADD).
These five regional divisions of the allocation of fuels were established in the U.S. during the Second World War and are still used today for data collection purposes.
Given that Texas is the largest U.S. oil-producing state, PADD 3 (Gulf Coast) is also the largest oil-producing PADD. PADD 3 also includes the federal offshore region in the Gulf of Mexico. There are around 400 operational oil and gas rigs in the country.
Impact of U.S. Oil Production on Employment
Rapid growth in oil production using advanced drilling methods has created high-paying jobs in states like North Dakota and Texas.
Thanks to the rapid development in the Bakken Shale formation, North Dakota boasts the nation’s lowest unemployment rate. The state has also grown personal income and state economic output at a fast rate, due to oil and gas industry growth.
Oil production from the Eagle Ford Shale has transformed a relatively poor region of South Texas into one of the nation’s most significant economic development zones. In fact, due largely to the oil and natural gas industry, the Texas Comptroller estimates that Texas has recovered 100% of the jobs lost during the Great Recession.
Looking to the Future
The U.S. slashed its oil production forecast through next year just as OPEC and its allies begin to roll back their production cuts in the coming months.
U.S. oil output will drop to 11.04 million barrels a day this year, down from a forecasted 11.15 million. This was a result of the deep freeze that shut down the oil industry in Texas. The EIA also lowered its output forecast for 2022 by 100,000 barrels a day.
Despite its forecast for a rise in supply from outside the cartel this year, OPEC said in its report that it is uncertain about the levels of investment expected to determine the non-OPEC supply outlook for the years to come.
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