The World’s Projected Energy Mix, from 2018-2040
Since 1977, the International Energy Agency (IEA) has put together the World Energy Outlook, a highly anticipated annual report that looks towards the future of energy production and consumption on a global basis.
In the latest edition, the report dives into two very different policy scenarios that help illustrate the choices and consequences we have ahead of us.
In this post, we’ll look at each policy scenario and then dive into the associated numbers for each, showing how they affect the projected global energy mix from 2018 to 2040.
The Policy Scenarios
The IEA bases its projections based on two policy scenarios:
- The Stated Policies Scenario
This scenario is intended to reflect the impact of existing public policy frameworks, including announced policy intentions.
- The Sustainable Development Scenario
This scenario outlines a major transformation of the global energy system, aligned with achieving the energy-related components of the United Nations’ Sustainable Development Goals (SDGs), such as reducing carbon emissions.
Neither scenario is technically a forecast; the IEA sees both scenarios as being possible.
However, this data can still provide a useful starting point for decision makers and investors looking to read the tea leaves. Will countries stick to their guns on their current plans, or will those plans be scrapped in the name of bolder, sustainable initiatives?
Scenario 1: Stated Policies
Today’s chart shows data corresponding to this policies scenario, as adjusted by CAPP.
See the energy use data below, shown in terms of Millions of Tonnes of Oil Equivalent (Mtoe):
|2018||2030||2040||Est. % of mix (2040)|
Note: Data is based on CAPP conversion estimates, and is rounded to nearest 50 Mtoe.
In the Stated Policies Scenario, oil will be the largest energy source in 2040, making up about 28% of the global energy mix — and natural gas will be right behind it, for 25% of supply.
Coal consumption, which is decreasing in Western markets, will stay consistent with 2018 levels thanks to growing demand in Asia.
Meanwhile, renewable energy (excl. hydro) will see an impressive renaissance, with this category (which includes wind, solar, geothermal, etc.) increasing its portion in the mix by over 300% over 22 years.
Scenario 2: Sustainable Development
The IEA’s Sustainable Development scenario is very different from the status quo, as shown here:
The contrast between the energy needed in the Stated Policies (STEPS) and Sustainable Development (SDS) projections is stark, going from a 2,500 Mtoe increase to a 800 Mtoe decrease in total consumption, driven by residential and transportation sectors.
Under this scenario, renewable energy use for electricity consumption (incl. hydro) would need to increase by 8,000 TWh more, with ultimately more than half of it in Asia.
|Renewable Energy (Electricity Generation)||2018||2040||% Increase|
|Stated Policies||6,800 TWh||18,049 TWh||165%|
|Sustainable Development||6,800 TWh||26,065 TWh||283%|
Under this transformational and ambitious scenario, fossil fuel use would plummet. Coal consumption would drop by roughly 60%, oil consumption by 30%, and the role of natural gas in the energy mix would remain stagnant.
Two Scenarios, One Path
Both scenarios are a possibility, but in reality we will likely find ourselves somewhere in between the two extremes.
This makes these two baselines a helpful place to start for both investors and decision makers. Depending on how you think governments, corporations, and organizations will act, you can then adjust the projections accordingly.
Visualizing the Scale of Global Fossil Fuel Production
How much oil, coal, and natural gas do we extract each year? See the scale of annual fossil fuel production in perspective.
The Scale of Global Fossil Fuel Production
Fossil fuels have been our predominant source of energy for over a century, and the world still extracts and consumes a colossal amount of coal, oil, and gas every year.
This infographic visualizes the volume of global fossil fuel production in 2021 using data from BP’s Statistical Review of World Energy.
The Facts on Fossil Fuels
In 2021, the world produced around 8 billion tonnes of coal, 4 billion tonnes of oil, and over 4 trillion cubic meters of natural gas.
Most of the coal is used to generate electricity for our homes and offices and has a key role in steel production. Similarly, natural gas is a large source of electricity and heat for industries and buildings. Oil is primarily used by the transportation sector, in addition to petrochemical manufacturing, heating, and other end uses.
Here’s a full breakdown of coal, oil, and gas production by country in 2021.
If all the coal produced in 2021 were arranged in a cube, it would measure 2,141 meters (2.1km) on each side—more than 2.5 times the height of the world’s tallest building.
China produced 50% or more than four billion tonnes of the world’s coal in 2021. It’s also the largest consumer of coal, accounting for 54% of coal consumption in 2021.
|Rank||Country||2021 Coal Production|
|% of Total|
|#7||🇿🇦 South Africa||234.5||3%|
India is both the second largest producer and consumer of coal. Meanwhile, Indonesia is the world’s largest coal exporter, followed by Australia.
In the West, U.S. coal production was down 47% as compared to 2011 levels, and the descent is likely to continue with the clean energy transition.
In 2021, the United States, Russia, and Saudi Arabia were the three largest crude oil producers, respectively.
|Rank||Country||2021 Oil Production |
|% of Total|
|#3||🇸🇦 Saudi Arabia||515.0||12%|
OPEC countries, including Saudi Arabia, made up the largest share of production at 35% or 1.5 billion tonnes of oil.
U.S. oil production has seen significant growth since 2010. In 2021, the U.S. extracted 711 million tonnes of oil, more than double the 333 million tonnes produced in 2010.
Natural Gas Production
The world produced 4,036 billion cubic meters of natural gas in 2021. The above graphic converts that into an equivalent of seven billion cubic meters of liquefied natural gas (LNG) to visualize it on the same scale as oil and gas.
Here are the top 10 producers of natural gas in 2021:
|Rank||Country||2021 Natural Gas Production |
|% of Total|
|#8||🇸🇦 Saudi Arabia||117.3||3%|
The U.S. was the largest producer, with Texas and Pennsylvania accounting for 47% of its gas production. The U.S. electric power and industrial sectors account for around one-third of domestic natural gas consumption.
Russia, the next-largest producer, was the biggest exporter of gas in 2021. It exported an estimated 210 billion cubic meters of natural gas via pipelines to Europe and China. Around 80% of Russian natural gas comes from operations in the Arctic region.
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