Mapped: The World’s Largest State-Owned Oil Companies
View the high-resolution of the infographic by clicking here.
Oil is one of the world’s most important natural resources, playing a critical role in everything from transportation fuels to cosmetics.
For this reason, many governments choose to nationalize their supply of oil. This gives them a greater degree of control over their oil reserves as well as access to additional revenue streams. In practice, nationalization often involves the creation of a national oil company to oversee the country’s energy operations.
What are the world’s largest and most influential state-owned oil companies?
Editor’s Note: This post and infographic are intended to provide a broad summary of the state-owned oil industry. Due to variations in reporting and available information, the companies named do not represent a comprehensive index.
State-Owned Oil Companies by Revenue
National oil companies are a major force in the global energy sector, controlling approximately three-quarters of the Earth’s oil reserves.
As a result, many have found their place on the Fortune Global 500 list, a ranking of the world’s 500 largest companies by revenue.
|Country||Name||Fortune Global 500 Rank||2019 Revenues|
|🇨🇳 China||Sinopec Group||2||$443B|
|🇨🇳 China||China National Petroleum Corporation (CNPC)||4||$379B|
|🇸🇦 Saudi Arabia||Saudi Aramco||6||$330B|
|🇮🇳 India||Indian Oil Corporation (IOCL)||151||$69B|
|🇮🇷 Iran||National Iranian Oil Company (NIOC)||Not listed||$19B*|
|🇻🇪 Venezuela||Petróleos de Venezuela (PDVSA)||Not listed||$23B (2018)|
*Value of Iranian petroleum exports in 2019. Source: Fortune, Statista, OPEC
China is home to the two largest companies from this list, Sinopec Group and China National Petroleum Corporation (CNPC). Both are involved in upstream and downstream oil operations, where upstream refers to exploration and extraction, and downstream refers to refining and distribution.
It’s worth noting that many of these companies are listed on public stock markets—Sinopec, for example, trades on exchanges located in Shanghai, Hong Kong, New York, and London. Going public can be an effective strategy for these companies as it allows them to raise capital for new projects, while also ensuring their governments maintain control. In the case of Sinopec, 68% of shares are held by the Chinese government.
Saudi Aramco was the latest national oil company to follow this strategy, putting up 1.5% of its business in a 2019 initial public offering (IPO). At roughly $8.53 per share, Aramco’s IPO raised $25.6 billion, making it one of the world’s largest IPOs in history.
Because state-owned oil companies are directly tied to their governments, they can sometimes get caught in the crosshairs of geopolitical conflicts.
The disputed presidency of Nicolás Maduro, for example, has resulted in the U.S. imposing sanctions against Venezuela’s government, central bank, and national oil company, Petróleos de Venezuela (PDVSA). The pressure of these sanctions is proving to be particularly damaging, with PDVSA’s daily production in decline since 2016.
In a country for which oil comprises 95% of exports, Venezuela’s economic outlook is becoming increasingly dire. The final straw was drawn in August 2020 when the country’s last remaining oil rig suspended its operations.
Other national oil companies at the receiving end of American sanctions include Russia’s Rosneft and Iran’s National Iranian Oil Company (NIOC). Rosneft was sanctioned by the U.S. in 2020 for facilitating Venezuelan oil exports, while NIOC was targeted for providing financial support to Iran’s Islamic Revolutionary Guard Corps, an entity designated as a foreign terrorist organization.
Like the rest of the fossil fuel industry, state-owned oil companies are highly exposed to the effects of climate change. This suggests that as time passes, many governments will need to find a balance between economic growth and environmental protection.
Brazil has already found itself in this dilemma as the country’s president, Jair Bolsonaro, has drawn criticism for his dismissive stance on climate change. In June 2020, a group of European investment firms representing $2 trillion in assets threatened to divest from Brazil if it did not do more to protect the Amazon rainforest.
These types of ultimatums may be an effective solution for driving climate action forward. In December 2020, Brazil’s national oil company, Petrobras, pledged a 25% reduction in carbon emissions by 2030. When asked about commitments further into the future, however, the company’s CEO appeared to be less enthusiastic.
That’s like a fad, to make promises for 2050. It’s like a magical year. On this side of the Atlantic we have a different view of climate change.
— Roberto Castello Branco, CEO, Petrobras
With its 2030 pledge, Petrobras joins a growing collection of state-owned oil companies that have made public climate commitments. Another example is Malaysia’s Petronas, which in November 2020, announced its intention to achieve net-zero carbon emissions by 2050. Petronas is wholly owned by the Malaysian government and is the country’s only entry on the Fortune Global 500.
Challenges Lie Ahead
Between geopolitical conflicts, environmental concerns, and price fluctuations, state-owned oil companies are likely to face a much tougher environment in the decades to come.
For Petronas, achieving its 2050 climate commitments will require significant investment in cleaner forms of energy. The company has been involved in numerous solar energy projects across Asia and has stated its interests in hydrogen fuels.
Elsewhere, China’s national oil companies are dealing with a more near-term threat. In compliance with an executive order issued by the Trump Administration in November 2020, the New York Stock Exchange (NYSE) announced it would delist three of China’s state-run telecom companies. Analysts believe oil companies such as Sinopec could be delisted next, due to their ties with the Chinese military.
Which Countries Have the World’s Largest Proven Oil Reserves?
The world holds 1.73 trillion barrels of proven oil reserves. Here we rank the top 14 countries that make up 93.5% of the world.
The Countries With the Largest Proven Oil Reserves
Oil is a natural resource formed by the decay of organic matter over millions of years, and like many other natural resources, it can only be extracted from reserves where it already exists. The only difference between oil and every other natural resource is that oil is well and truly the lifeblood of the global economy.
The world derives over a third of its total energy production from oil, more than any other source by far. As a result, the countries that control the world’s oil reserves often have disproportionate geopolitical and economic power.
According to the BP Statistical Review of World Energy 2020, 14 countries make up 93.5% of the proven oil reserves globally. The countries on this list span five continents and control anywhere from 25.2 billion barrels of oil to 304 billion barrels of oil.
Proven Oil Reserves, by Country
At the end of 2019, the world had 1.73 trillion barrels of oil reserves. Here are the 14 countries with at least a 1% share of global proven oil reserves:
|Rank||Country||Oil Reserves |
|Share of Global Reserves|
|#2||🇸🇦 Saudi Arabia||298||17.2%|
|#9||🇺🇸 United States||69||4.0%|
While these countries are found all over the globe, a few countries have much larger amounts than others. Venezuela is the leading country in terms of oil reserves, with over 304 billion barrels of oil beneath its surface. Saudi Arabia is a close second with 298 billion, and Canada is third with 170 billion barrels of oil reserves.
Oil Reserves vs. Oil Production
A country with large amounts of reserves does not always translate to strong production numbers for petroleum, oil, and by-products. Oil reserves simply serve as an estimate of the amount of economically recoverable crude oil in a particular region. To qualify, these reserves must have the potential of being extracted under current technological constraints.
While countries like the U.S. and Russia are low on the list of oil reserves, they rank highly in terms of oil production. More than 95 million barrels of oil were produced globally every day in 2019, and the U.S., Saudi Arabia, and Russia are among the world’s top oil-producing countries, respectively.
Oil Sands Contributing to Growing Reserves
Venezuela has long been an oil-producing country with heavy economic reliance on oil exports. However, in 2011, Venezuela’s energy and oil ministry announced an unprecedented increase in proven oil reserves as oil sands in the Orinoco Belt territory were certified.
Between 2005 and 2015, Venezuela jumped from fifth in the world to number one as nearly 200 billion barrels of proven oil reserves were identified. As a result, South and Central America’s proven oil reserves more than doubled between 2008 and 2011.
In 2002, Canada’s proven oil reserves jumped from 5 billion to 180 billion barrels based on new oil sands estimates.
Canada accounts for almost 10% of the world’s proven oil reserves at 170 billion barrels, with an estimated 166.3 billion located in Alberta’s oil sands, and the rest found in conventional, offshore, and tight oil formations.
Large Reserves in OPEC Nations
The Organization of the Petroleum Exporting Countries (OPEC) is an intergovernmental global petroleum and oil distribution agency headquartered in Vienna, Austria.
The majority of countries with the largest oil reserves in the world are members of OPEC. Now composed of 14 member states, OPEC holds nearly 70% of crude oil reserves worldwide.
Most OPEC countries are in the Middle East, the region with the largest oil reserves, holding nearly half of the global share.
Though most of the proven oil reserves in the world were historically considered to be centered in the Middle East, in the past three decades their share of global oil reserves has dropped, from over 60% in 1992 to about 48% in 2019.
One of the main reasons for this drop was constant oil production and greater reserves discovered in the Americas. By 2012, Central and South America’s share had more than doubled and has remained just under 20% in the years since.
While oil sands ushered in a new era of global oil reserve domination, as the world shifts away from oil consumption and towards green energy and electrification, these reserves might not matter as much in the future as they once did.
Visualizing the Power Consumption of Bitcoin Mining
Bitcoin mining requires significant amounts of energy, but what does this consumption look like when compared to countries and companies?
Visualizing the Power Consumption of Bitcoin Mining
Cryptocurrencies have been some of the most talked-about assets in recent months, with bitcoin and ether prices reaching record highs. These gains were driven by a flurry of announcements, including increased adoption by businesses and institutions.
Lesser known, however, is just how much electricity is required to power the Bitcoin network. To put this into perspective, we’ve used data from the University of Cambridge’s Bitcoin Electricity Consumption Index (CBECI) to compare Bitcoin’s power consumption with a variety of countries and companies.
Why Does Bitcoin Mining Require So Much Power?
When people mine bitcoins, what they’re really doing is updating the ledger of Bitcoin transactions, also known as the blockchain. This requires them to solve numerical puzzles which have a 64-digit hexadecimal solution known as a hash.
Miners may be rewarded with bitcoins, but only if they arrive at the solution before others. It is for this reason that Bitcoin mining facilities—warehouses filled with computers—have been popping up around the world.
These facilities enable miners to scale up their hashrate, also known as the number of hashes produced each second. A higher hashrate requires greater amounts of electricity, and in some cases can even overload local infrastructure.
Putting Bitcoin’s Power Consumption Into Perspective
On March 18, 2021, the annual power consumption of the Bitcoin network was estimated to be 129 terawatt-hours (TWh). Here’s how this number compares to a selection of countries, companies, and more.
|Name||Population||Annual Electricity Consumption (TWh)|
|All of the world’s data centers||-||205|
|State of New York||19.3M||161|
|Walt Disney World Resort (Florida)||-||1|
Note: A terawatt hour (TWh) is a measure of electricity that represents 1 trillion watts sustained for one hour.
Source: Cambridge Centre for Alternative Finance, Science Mag, New York ISO, Forbes, Facebook, Reedy Creek Improvement District, Worldometer
If Bitcoin were a country, it would rank 29th out of a theoretical 196, narrowly exceeding Norway’s consumption of 124 TWh. When compared to larger countries like the U.S. (3,989 TWh) and China (6,543 TWh), the cryptocurrency’s energy consumption is relatively light.
For further comparison, the Bitcoin network consumes 1,708% more electricity than Google, but 39% less than all of the world’s data centers—together, these represent over 2 trillion gigabytes of storage.
Where Does This Energy Come From?
In a 2020 report by the University of Cambridge, researchers found that 76% of cryptominers rely on some degree of renewable energy to power their operations. There’s still room for improvement, though, as renewables account for just 39% of cryptomining’s total energy consumption.
Here’s how the share of cryptominers that use each energy type vary across four global regions.
|Energy Source||Asia-Pacific||Europe||Latin America|
and the Caribbean
Source: University of Cambridge
Editor’s note: Numbers in each column are not meant to add to 100%
Hydroelectric energy is the most common source globally, and it gets used by at least 60% of cryptominers across all four regions. Other types of clean energy such as wind and solar appear to be less popular.
Coal energy plays a significant role in the Asia-Pacific region, and was the only source to match hydroelectricity in terms of usage. This can be largely attributed to China, which is currently the world’s largest consumer of coal.
Researchers from the University of Cambridge noted that they weren’t surprised by these findings, as the Chinese government’s strategy to ensure energy self-sufficiency has led to an oversupply of both hydroelectric and coal power plants.
Towards a Greener Crypto Future
As cryptocurrencies move further into the mainstream, it’s likely that governments and other regulators will turn their attention to the industry’s carbon footprint. This isn’t necessarily a bad thing, however.
Mike Colyer, CEO of Foundry, a blockchain financing provider, believes that cryptomining can support the global transition to renewable energy. More specifically, he believes that clustering cryptomining facilities near renewable energy projects can mitigate a common issue: an oversupply of electricity.
“It allows for a faster payback on solar projects or wind projects… because they would [otherwise] produce too much energy for the grid in that area”
– Mike Colyer, CEO, Foundry
This type of thinking appears to be taking hold in China as well. In April 2020, Ya’an, a city located in China’s Sichuan province, issued a public guidance encouraging blockchain firms to take advantage of its excess hydroelectricity.
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