Regan Brown
The burning of fossil fuels for energy began around the Industrial Revolution. Fossil fuels, including coal, oil, and gas, have played a dominant role in global energy systems, supplying about 80% of our energy needs. However, the burning of these fuels has also led to significant negative impacts, including air-and-water pollution and vast atmospheric changes. With the widespread availability of electricity and the increasing quality of life, the world's energy consumption has increased significantly, with fossil fuel consumption doubling since 1980. As a result, the world now burns more than ten billion tonnes of fossil fuels annually, with coal accounting for about a third of this energy production.
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What You'll Learn
Fossil fuels: coal, oil, and gas
Fossil fuels—coal, oil, and gas—have been a fundamental driver of technological, social, and economic progress since the Industrial Revolution. However, burning them releases carbon dioxide (CO2) and other greenhouse gases, making them the largest driver of global climate change and a significant contributor to local air pollution.
Coal
Coal is a solid, carbon-heavy rock that comes in four main varieties: lignite, sub-bituminous, bituminous, and anthracite. It is the dirtiest fossil fuel, responsible for over 0.3°C of the 1°C increase in global average temperatures. Coal mining methods, such as mountaintop removal and strip mining, have negative environmental impacts, and coal transportation can require the combustion of additional fossil fuels. When burned, coal contributes to atmospheric particulate matter, smog, and acid rain.
Oil
Oil is formed from the decomposition of plankton in the oceans. It releases a significant amount of carbon when burned—approximately a third of the world's total carbon emissions. Oil spills have devastating impacts on ocean ecosystems, and oil refineries contribute to air and water pollution. The booming fracking industry, which involves blasting a mixture of water, chemicals, and sand into wells to extract oil or gas, has brought pollution to residential areas and caused health issues.
Gas
Natural gas is formed from terrestrial plants and is considered a cleaner energy source than coal and oil. However, it is still a fossil fuel, accounting for a fifth of the world's total carbon emissions.
Transitioning Away from Fossil Fuels
As low-carbon sources of energy, such as nuclear and renewables, become more readily available, the world needs to rapidly transition away from fossil fuels to mitigate climate change and reduce air pollution.
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Global fossil fuel consumption
Fossil fuels (coal, oil, and gas) have played and continue to play a dominant role in global energy systems. The burning of fossil fuels began around the Industrial Revolution, and fossil fuel consumption has changed significantly over the past few centuries. Consumption has increased significantly over the past half-century, roughly doubling since 1980. The types of fuel relied on have also shifted from solely coal towards a combination with oil and gas.
In 2023, global primary energy consumption hit historic highs, with oil and coal dominating the energy mix. Fossil fuels comprised 82% of the global energy mix, with renewable energy sources accounting for 15% of the total. This was the highest share of renewable energy in history but still far from what is needed to curb global warming.
The world's fossil fuel reserves are just a tiny slice of the total fuel resource that we know exists. To count as a reserve, the fuel must have a good chance of being profitably extracted. Fossil fuel is a finite resource, and the more we extract, the greater the risk of climate catastrophe. As low-carbon sources of energy become readily available, the world needs to transition away from fossil fuels.
In the Global North, coal use for power generation is declining due to slow growth in electricity demand, the substitution of coal-based power generation with natural gas, improvement in energy efficiency, and a shift towards cleaner energy sources. In 2023, power generation fell by 1% in the US and 2.4% in Europe. In contrast, the Global South, particularly India and China, are dependent on imported natural gas, which is expensive compared to domestic coal. As a result, per-person fossil fuel consumption and carbon emissions in the Global South are low compared to the Global North.
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$49.99
Fossil fuel reserves
The concept of "proven reserves" is crucial in understanding fossil fuel reserves. Proven reserves refer to fossil fuels that can be recovered with reasonable certainty under existing economic and technological conditions. These reserves are distinct from "resources," which may be more abundant but are not yet feasible to extract. The amount of proven reserves can change over time as new technologies, such as fracking, make previously inaccessible sources accessible.
The challenge we face is that while fossil fuels are immensely useful and valuable, burning them contributes to climate change and has negative impacts on human health. To limit global warming to the agreed-upon target of 2°C, it is estimated that four-fifths of proven fossil fuel reserves must remain unburned. This proportion increases if we aim for the more ambitious target of 1.5°C, with nearly 60% of oil and fossil methane gas, and 90% of coal needing to stay in the ground by 2050.
The transition away from fossil fuels is essential, but it is also complex. Fossil fuels have been key to industrialization and economic development, and many countries rely heavily on them for energy production. As we move towards low-carbon energy sources, it is crucial to consider the impact on regions heavily dependent on fossil fuel extraction and the need for a just transition that protects workers and communities in those areas.
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Energy consumption by country
Global Overview
Global energy consumption increased by 2.2% in 2024, a faster rate compared to the historical average of 1.5% per year from 2010 to 2019. The BRICS countries (Brazil, Russia, India, China, and South Africa) accounted for a significant share of this growth, contributing 43% of global energy consumption in 2024.
Country-Specific Insights
- China: China is the world's largest consumer of electricity, accounting for 31% of global consumption in 2023. China's energy consumption grew by 4% in 2024, returning to its average growth rate from 2010 to 2019.
- United States: In 2023, the United States consumed approximately 8.94 million barrels of motor gasoline per day, equivalent to about 376 million gallons daily. The country experienced a 1% increase in energy consumption in 2024.
- Canada: Canada is among the largest energy consumers globally, with its citizens consuming up to 100 times more energy than those in some of the poorest countries.
- Middle Eastern Countries: Wealthy nations in the Middle East, such as Oman, Saudi Arabia, and Qatar, are also significant energy consumers, with per capita consumption comparable to that of Canada.
- European Countries: Energy consumption trends varied across European countries. While it increased by 2% in South Korea and 1% in Australia, it remained stable in the EU and decreased by 1% in Japan.
- Other Notable Countries: Indonesia, Vietnam, and Brazil witnessed notable growth rates in energy consumption in 2024, with increases of 6%, 9%, and 3%, respectively.
Energy Sources
The burning of fossil fuels, including coal, oil, and gas, has been a critical source of energy globally. However, the types of fuel relied upon have shifted over time. While coal consumption is declining in many regions, oil and gas consumption continue to grow. Additionally, some countries with smaller populations and lower economic development may rely more on traditional biomass sources, such as crop residues and wood, which can make it challenging to obtain accurate energy consumption data.
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Fuel economy and consumption
Fuel economy is an important consideration for both consumers and policymakers. For consumers, it directly impacts fuel costs, with more efficient vehicles requiring less fuel to travel the same distance. This is particularly relevant for long-distance travel or frequent driving, as better fuel economy can result in significant cost savings. Additionally, fuel economy can be a deciding factor when choosing between different vehicle models, with some vehicles known for their fuel efficiency, such as hybrid or electric cars.
From a broader perspective, fuel economy plays a significant role in energy policy and environmental concerns. The burning of fossil fuels, including coal, oil, and gas, is a dominant source of global energy but also contributes to climate change and air pollution. As such, improving fuel economy can help reduce the environmental impact of transportation. This involves not only the development and adoption of more fuel-efficient vehicles but also the consideration of alternative fuel sources, such as renewable and nuclear energy.
While the calculation of fuel economy is relatively straightforward, various factors can influence a vehicle's fuel consumption. These include the type of vehicle, such as cars, trucks, or aircraft, as well as factors like engine size, weight, and driving behaviour. For example, aggressive acceleration and frequent braking can decrease fuel economy, while maintaining a constant speed and anticipating traffic flow can improve it. Additionally, external conditions such as road incline, wind resistance, and temperature can also impact fuel consumption.
In conclusion, fuel economy and consumption are critical aspects of modern transportation, impacting both individual finances and global environmental sustainability. By understanding fuel economy, consumers can make informed choices, and policymakers can develop strategies to reduce our reliance on fossil fuels and mitigate their negative consequences.
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Frequently asked questions
Humans burn more than ten billion tonnes of fossil fuels per year worldwide, supplying about 80% of our energy needs.
Fossil fuels are coal, oil, and gas. They have been the dominant source of energy since the Industrial Revolution.
Fossil fuels are the largest driver of global climate change. They are also a major contributor to air pollution, which is linked to millions of premature deaths each year.
Renewable sources of energy, such as hydroelectric, wind, and solar power, are potential alternatives. Nuclear power is another option that could solve our fossil fuel problem with current technology.
