posts_gdocs: 1367JYppXDeRKREHYCj8x3mnvp69UUJIpun2P2yHjUXc
Data license: CC-BY
This data as json
| id | slug | type | content | published | createdAt | publishedAt | updatedAt | publicationContext | revisionId | breadcrumbs | markdown | title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1367JYppXDeRKREHYCj8x3mnvp69UUJIpun2P2yHjUXc | fossil-fuels | article | {
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"slug": "fossil-fuel-consumption",
"text": "Fossil fuel consumption",
"title": "Fossil fuel consumption",
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},
{
"slug": "global-fossil-fuel-consumption",
"text": "Global fossil fuel consumption",
"title": "Global fossil fuel consumption",
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},
{
"slug": "fossil-fuel-consumption-which-countries-use-the-most-energy-from-fossil-fuels",
"text": "Fossil fuel consumption: which countries use the most energy from fossil fuels?",
"title": "Fossil fuel consumption: which countries use the most energy from fossil fuels?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "per-capita-where-do-people-consume-the-most-energy-from-fossil-fuels",
"text": "Per capita: where do people consume the most energy from fossil fuels?",
"title": "Per capita: where do people consume the most energy from fossil fuels?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "fossil-fuel-consumption-by-type",
"text": "Fossil fuel consumption by type",
"title": "Fossil fuel consumption by type",
"supertitle": "",
"isSubheading": true
},
{
"slug": "fossil-fuels-in-the-energy-and-electricity-mix",
"text": "Fossil fuels in the energy and electricity mix",
"title": "Fossil fuels in the energy and electricity mix",
"supertitle": "",
"isSubheading": false
},
{
"slug": "what-share-of-primary-energy-comes-from-fossil-fuels",
"text": "What share of primary energy comes from fossil fuels?",
"title": "What share of primary energy comes from fossil fuels?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "what-share-of-electricity-comes-from-fossil-fuels",
"text": "What share of electricity comes from fossil fuels?",
"title": "What share of electricity comes from fossil fuels?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "coal",
"text": "Coal",
"title": "Coal",
"supertitle": "",
"isSubheading": false
},
{
"slug": "coal-production-how-much-do-countries-produce",
"text": "Coal production: how much do countries produce?",
"title": "Coal production: how much do countries produce?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "energy-from-coal-how-much-do-countries-consume",
"text": "Energy from coal: how much do countries consume?",
"title": "Energy from coal: how much do countries consume?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "what-share-of-primary-energy-comes-from-coal",
"text": "What share of primary energy comes from coal?",
"title": "What share of primary energy comes from coal?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "what-share-of-electricity-comes-from-coal",
"text": "What share of electricity comes from coal?",
"title": "What share of electricity comes from coal?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "when-do-countries-plan-to-phase-out-coal",
"text": "When do countries plan to phase out coal?",
"title": "When do countries plan to phase out coal?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "oil",
"text": "Oil",
"title": "Oil",
"supertitle": "",
"isSubheading": false
},
{
"slug": "oil-production-how-much-do-countries-produce",
"text": "Oil production: how much do countries produce?",
"title": "Oil production: how much do countries produce?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "energy-from-oil-how-much-do-countries-consume",
"text": "Energy from oil: how much do countries consume?",
"title": "Energy from oil: how much do countries consume?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "what-share-of-primary-energy-comes-from-oil",
"text": "What share of primary energy comes from oil?",
"title": "What share of primary energy comes from oil?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "gas",
"text": "Gas",
"title": "Gas",
"supertitle": "",
"isSubheading": false
},
{
"slug": "gas-production-how-much-do-countries-produce",
"text": "Gas production: how much do countries produce?",
"title": "Gas production: how much do countries produce?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "energy-from-gas-how-much-do-countries-consume",
"text": "Energy from gas: how much do countries consume?",
"title": "Energy from gas: how much do countries consume?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "what-share-of-primary-energy-comes-from-gas",
"text": "What share of primary energy comes from gas?",
"title": "What share of primary energy comes from gas?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "what-share-of-electricity-comes-from-gas",
"text": "What share of electricity comes from gas?",
"title": "What share of electricity comes from gas?",
"supertitle": "",
"isSubheading": true
},
{
"slug": "fossil-fuel-reserves",
"text": "Fossil fuel reserves",
"title": "Fossil fuel reserves",
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"isSubheading": false
},
{
"slug": "coal-reserves",
"text": "Coal reserves",
"title": "Coal reserves",
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{
"slug": "gas-reserves",
"text": "Gas reserves",
"title": "Gas reserves",
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{
"slug": "definitions-and-measurement",
"text": "Definitions and measurement",
"title": "Definitions and measurement",
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},
{
"slug": "reserves-vs-resources-when-does-a-resource-become-a-reserve",
"text": "Reserves vs. resources: when does a resource become a reserve?",
"title": "Reserves vs. resources: when does a resource become a reserve?",
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"text": "For most of human history, our ancestors relied on very basic forms of energy: human muscle, animal muscle, and the burning of biomass such as wood or crops. But the Industrial Revolution unlocked a whole new energy resource: fossil fuels. Fossil energy has been a fundamental driver of the technological, social, economic, and development progress that has followed.",
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"text": "Fossil fuels (coal, oil, gas) have, and continue to, play a dominant role in global energy systems.",
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"text": "But they also come with several negative impacts. When burned, they produce ",
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"text": "carbon dioxide",
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"text": " (CO",
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"text": "2",
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"text": ") and are the largest driver of global climate change. They are also a major contributor to local ",
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"text": "air pollution",
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"text": ", which is estimated to be linked to millions of premature deaths each year.",
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"text": "As low-carbon sources of energy \u2013 nuclear and renewables \u2013 become readily available, the world needs to rapidly transition away from fossil fuels.",
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"text": "This article presents the long-run and recent perspectives on coal, oil, and gas \u2013 how much countries produce and consume, where our fossil fuel reserves are, and what role the fuels play in our energy and electricity systems.",
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"text": "Fossil fuel consumption",
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"text": "Global fossil fuel consumption",
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"text": "The burning of fossil fuels for energy began around the Industrial Revolution. But fossil fuel consumption has changed significantly over the past few centuries \u2013 both in terms of what and how much we burn.",
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"text": "In the interactive chart, we see global fossil fuel consumption broken down by coal, oil, and gas since 1800. Earlier data, pre-1965, is sourced from Vaclav Smil's work on energy transitions; this has been combined with data published in BP's ",
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"url": "https://www.bp.com/en/global/corporate/energy-economics/statistical-review-of-world-energy.html",
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"text": "Statistical Review of World Energy",
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"text": " from 1965 onwards.",
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"text": "1",
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"text": "Fossil fuel consumption has increased significantly over the past half-century, around eight-fold since 1950 and roughly doubling since 1980.",
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"text": "But the types of fuel we rely on have also shifted from solely coal towards a combination with oil and gas. Today, coal consumption is falling in many parts of the world. But oil and gas are still growing quickly.",
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"text": ": which countries use the most energy from fossil fuels?",
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"text": "We've looked at how much fossil fuel energy is consumed globally. But what about countries? How much fossil energy do they consume?",
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"text": "The interactive chart here shows the amount of primary energy from fossil fuels that is consumed each year.",
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"text": "This is the sum of energy from coal, oil, and gas. In the sections below, we look at each of these sources individually.",
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"text": "Per capita",
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"text": ": where do people consume the most energy from fossil fuels?",
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"text": "Looking at energy consumption at the country level is often a strong reflection of population size rather than actual fossil fuel consumption per person.",
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"text": "How do these comparisons look when we adjust for population?",
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"text": "In the interactive chart we see the amount of energy from fossil fuels consumed per person. This is the sum of primary energy from coal, oil, and gas combined.",
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"text": "Across the world, we see that the largest consumers use more than ten times the amount of fossil energy than some of the smallest consumers.",
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"text": "Fossil fuel consumption by type",
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"text": "In the sections above, we looked at the consumption of fossil fuels collectively. But it's important to look at the role of coal, oil, and gas individually \u2013 their impacts are not equal. Coal, for example, typically produces more CO",
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"text": " and local air pollution per unit of energy ",
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"text": "[see ",
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"text": " on the relative safety and impacts of different energy sources]",
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"text": "In the interactive charts here, we show fossil fuel consumption disaggregated by type. This is shown as a stacked area chart \u2013 useful for seeing the relative contribution of each; but also as a line chart which allows us to see how the consumption of each is changing over time.",
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"text": "Fossil fuels in the energy and electricity mix",
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"text": "What share of ",
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"text": " comes from fossil fuels?",
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"text": "How do fossil fuels fit in within the rest of the energy mix? What share of primary energy comes from fossil fuels?",
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"text": "Around four-fifths of global primary energy comes from coal, oil, and gas. Over the coming decades, we must rapidly reduce this share by displacing them with low-carbon energy sources.",
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"text": "In the interactive chart, we see how this share varies across the world.",
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"text": " comes from fossil fuels?",
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"text": "Electricity is one component of total energy consumption \u2013 the other two being transport and heating.",
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"text": "Globally, fossil fuels account for a much smaller share of electricity production than the energy system as a whole.",
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"text": "This interactive map shows the share of electricity that comes from fossil fuels (coal, oil, and gas summed together) across the world. Oil accounts for only a small share of electricity production \u2013 most come from coal and gas. The share from coal, oil and gas individually can be found in the sections below.",
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"text": "Coal",
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"text": "Coal production",
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"text": ": how much do countries produce?",
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"text": "Which countries produce the most coal? How has this changed over time?",
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"text": "In the interactive chart here we see coal production by country. This has been converted into primary energy equivalents (i.e., terawatt-hours of energy) for comparability across our other data on energy.",
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"text": "Note that this measures coal ",
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"text": ", not consumption. Many countries consume energy from coal in their energy supply. However, not all countries have ",
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"text": " to produce this themselves. This therefore measures coal production before trade between countries.",
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"text": "Fossil fuel production is an important metric \u2013 it helps us understand where fossil fuels are being extracted. But we also care about where that energy is being consumed \u2013 that tells us what role fossil fuels are playing in the energy system of each country.",
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"text": "This interactive chart shows primary energy consumption from coal across the world. This represents coal production adjusted for trade (so, coal exports are subtracted and imports are added).",
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"text": "Coal has been a critical energy source and a mainstay in global energy production for centuries.",
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"text": "But it's also the most ",
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"text": "polluting energy source",
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"text": ": both in terms of the amount of CO",
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"text": " it produces per unit of energy, but also the amount of local air pollution it creates. Moving away from coal energy is important for climate change and human health.",
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"text": "This interactive map shows the share of primary energy from coal worldwide.",
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"text": "Powering Past Coal Alliance (PPCA): https://www.poweringpastcoal.org/Beyond Coal EU: https://beyond-coal.eu/coal-exit-tracker/Bloomberg Global Coal Countdown: https://bloombergcoalcountdown.com/EMBER Climate: https://ember-climate.org/National announcements during the COP26 Climate Summit.",
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"title": "Fossil fuels",
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"excerpt": "Fossil fuels were key to industrialization and rising prosperity, but their impact on health and the climate means that we should transition away from them.",
"dateline": "This page was first published in October 2022 and last revised in January 2024.",
"subtitle": "Fossil fuels were key to industrialization and rising prosperity, but their impact on health and the climate means that we should transition away from them.",
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1 | 2023-10-06 18:49:52 | 2017-10-02 05:40:00 | 2024-01-05 10:51:18 | unlisted | ALBJ4LuEkW4IVMtVmWX54YvfJn5sKdY3MWASHRxNRFSNVdR_cfubYKi9_ew6LOLfQhUWbUx0m2HTdF99pShSaQ | [
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"label": "Fossil Fuels"
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For most of human history, our ancestors relied on very basic forms of energy: human muscle, animal muscle, and the burning of biomass such as wood or crops. But the Industrial Revolution unlocked a whole new energy resource: fossil fuels. Fossil energy has been a fundamental driver of the technological, social, economic, and development progress that has followed. Fossil fuels (coal, oil, gas) have, and continue to, play a dominant role in global energy systems. But they also come with several negative impacts. When burned, they produce [carbon dioxide](http://ourworldindata.org/co2-and-other-greenhouse-gas-emissions) (CO2) and are the largest driver of global climate change. They are also a major contributor to local [air pollution](http://ourworldindata.org/air-pollution), which is estimated to be linked to millions of premature deaths each year. As low-carbon sources of energy – nuclear and renewables – become readily available, the world needs to rapidly transition away from fossil fuels. This article presents the long-run and recent perspectives on coal, oil, and gas – how much countries produce and consume, where our fossil fuel reserves are, and what role the fuels play in our energy and electricity systems. ## Fossil fuel consumption ### Global fossil fuel consumption The burning of fossil fuels for energy began around the Industrial Revolution. But fossil fuel consumption has changed significantly over the past few centuries – both in terms of what and how much we burn. In the interactive chart, we see global fossil fuel consumption broken down by coal, oil, and gas since 1800. Earlier data, pre-1965, is sourced from Vaclav Smil's work on energy transitions; this has been combined with data published in BP's [Statistical Review of World Energy](https://www.bp.com/en/global/corporate/energy-economics/statistical-review-of-world-energy.html) from 1965 onwards.1 Fossil fuel consumption has increased significantly over the past half-century, around eight-fold since 1950 and roughly doubling since 1980. But the types of fuel we rely on have also shifted from solely coal towards a combination with oil and gas. Today, coal consumption is falling in many parts of the world. But oil and gas are still growing quickly. <Chart url="https://ourworldindata.org/grapher/global-fossil-fuel-consumption"/> ### **Fossil fuel consumption**: which countries use the most energy from fossil fuels? We've looked at how much fossil fuel energy is consumed globally. But what about countries? How much fossil energy do they consume? The interactive chart here shows the amount of primary energy from fossil fuels that is consumed each year. This is the sum of energy from coal, oil, and gas. In the sections below, we look at each of these sources individually. <Chart url="https://ourworldindata.org/grapher/fossil-fuel-primary-energy"/> ### **Per capita**: where do people consume the most energy from fossil fuels? Looking at energy consumption at the country level is often a strong reflection of population size rather than actual fossil fuel consumption per person. How do these comparisons look when we adjust for population? In the interactive chart we see the amount of energy from fossil fuels consumed per person. This is the sum of primary energy from coal, oil, and gas combined. Across the world, we see that the largest consumers use more than ten times the amount of fossil energy than some of the smallest consumers. <Chart url="https://ourworldindata.org/grapher/fossil-fuels-per-capita"/> ### Fossil fuel consumption by type In the sections above, we looked at the consumption of fossil fuels collectively. But it's important to look at the role of coal, oil, and gas individually – their impacts are not equal. Coal, for example, typically produces more CO2 and local air pollution per unit of energy _[see __[our article](https://ourworldindata.org/safest-sources-of-energy)__ on the relative safety and impacts of different energy sources]_. In the interactive charts here, we show fossil fuel consumption disaggregated by type. This is shown as a stacked area chart – useful for seeing the relative contribution of each; but also as a line chart which allows us to see how the consumption of each is changing over time. <Chart url="https://ourworldindata.org/grapher/fossil-fuel-consumption-by-fuel-type"/> <Chart url="https://ourworldindata.org/grapher/fossil-fuel-consumption-by-type"/> ## Fossil fuels in the energy and electricity mix ### What share of **primary energy** comes from fossil fuels? How do fossil fuels fit in within the rest of the energy mix? What share of primary energy comes from fossil fuels? Around four-fifth of global primary energy comes from coal, oil, and gas. Over the coming decades, we must rapidly reduce this share by displacing them with low-carbon energy sources. In the interactive chart, we see how this share varies across the world. <Chart url="https://ourworldindata.org/grapher/fossil-fuels-share-energy"/> ### What share of **electricity** comes from fossil fuels? Electricity is one component of total energy consumption – the other two being transport and heating. Globally, fossil fuels account for a much smaller share of electricity production than the energy system as a whole. This interactive map shows the share of electricity that comes from fossil fuels (coal, oil, and gas summed together) across the world. Oil accounts for only a small share of electricity production – most come from coal and gas. The share from coal and gas individually can be found in the sections below. <Chart url="https://ourworldindata.org/grapher/share-electricity-fossil-fuels"/> ## Coal ### **Coal production**: how much do countries produce? Which countries produce the most coal? How has this changed over time? In the interactive chart here we see coal production by country. This has been converted into primary energy equivalents (i.e., terawatt-hours of energy) for comparability across our other data on energy. Note that this measures coal _production_, not consumption. Many countries consume energy from coal in their energy supply. However, not all countries have [coal reserves](http://ourworldindata.org/fossil-fuels#coal-reserves) to produce this themselves. This therefore measures coal production before trade between countries. <Chart url="https://ourworldindata.org/grapher/coal-production-by-country"/> ### **Energy from coal**: how much do countries consume? Fossil fuel production is an important metric – it helps us understand where fossil fuels are being extracted. But we also care about where that energy is being consumed – that tells us what role fossil fuels are playing in the energy system of each country. This interactive chart shows primary energy consumption from coal across the world. This represents coal production adjusted for trade (so, coal exports are subtracted and imports are added). <Chart url="https://ourworldindata.org/grapher/coal-consumption-by-country-terawatt-hours-twh"/> ### What share of **primary energy** comes from coal? Coal has been a critical energy source and a mainstay in global energy production for centuries. But it's also the most [polluting energy source](https://ourworldindata.org/safest-sources-of-energy): both in terms of the amount of CO2 it produces per unit of energy, but also the amount of local air pollution it creates. Moving away from coal energy is important for climate change and human health. This interactive map shows the share of primary energy from coal worldwide. <Chart url="https://ourworldindata.org/grapher/coal-energy-share"/> ### What share of **electricity** comes from coal? Coal is currently the largest source of electricity globally. For many countries remains the dominant source. But, we also see that others have seen a massive shift away from coal in recent years – the UK is [one such example](https://ourworldindata.org/death-uk-coal). This interactive map shows the share of electricity that comes from coal worldwide. <Chart url="https://ourworldindata.org/grapher/share-electricity-coal"/> ### When do countries plan to phase out coal? Coal is the [world's oldest](https://ourworldindata.org/grapher/global-energy-substitution?country=~OWID_WRL) industrial source of energy. It is still a dominant source of energy across the world today – especially within our electricity mix. But coal is the [world's dirtiest fuel](https://ourworldindata.org/safest-sources-of-energy) – it not only emits the most carbon dioxide emissions per unit of energy, it severely impacts health through [air pollution](http://ourworldindata.org/air-pollution). Many countries are committing to phasing coal power out of their electricity mix. This map shows countries’ pledges to achieve this. Some countries are already coal-free. Some have set to phase it out by 2030, 2040, or later. Some have not yet committed to eliminating it.2 <Chart url="https://ourworldindata.org/grapher/coal-phase-out-timeline?country=FIN~POL~SLE"/> ## Oil ### **Oil production**: how much do countries produce? Which countries produce the most oil? How has this changed over time? In the interactive chart here we see oil production by country. This has been converted into primary energy equivalents (i.e., terawatt-hours of energy) for comparability across our other data on energy. Note that this measures oil _production_, not consumption. Many countries consume energy from oil in their energy supply. However, not all countries have [oil reserves](http://ourworldindata.org/fossil-fuels#oil-reserves) to produce this themselves. This therefore measures oil production before trade between countries. <Chart url="https://ourworldindata.org/grapher/oil-production-by-country"/> ### **Energy from oil**: how much do countries consume? Oil production is an important indicator to follow – it helps us understand where it's being extracted, who the main oil producers are, and how this relates to oil reserves. But we also care about where that oil is being consumed – that tells us what role it's playing in the energy system of each country. This interactive chart shows primary energy consumption from oil across the world. This represents oil production adjusted for trade (so, oil exports are subtracted and imports are added). <Chart url="https://ourworldindata.org/grapher/oil-consumption-by-country"/> ### What share of **primary energy** comes from oil? Oil is the world's largest energy source today. It is the dominant source of energy for the transport sector in particular. This interactive map shows the share of primary energy from oil worldwide. <Chart url="https://ourworldindata.org/grapher/oil-share-energy"/> ## Gas ### **Gas production**: how much do countries produce? Which countries produce the most gas? How has this changed over time? In the interactive chart here we see gas production by country. This has been converted into primary energy equivalents (i.e., terawatt-hours of energy) for comparability across our other data on energy. Note that this measures gas _production_, not consumption. Many countries consume energy from gas in their energy supply. But not all countries have [gas reserves](http://ourworldindata.org/fossil-fuels#gas-reserves) to produce this themselves. This therefore measures gas production before trade between countries. <Chart url="https://ourworldindata.org/grapher/gas-production-by-country"/> ### **Energy from gas**: how much do countries consume? In the section above we looked at where in the world gas is _produced_. But, after trade, where in the world is gas consumed? This interactive chart shows primary energy consumption from gas across the world. This represents gas production adjusted for trade (so, gas exports are subtracted and imports are added). <Chart url="https://ourworldindata.org/grapher/gas-consumption-by-country"/> ### What share of **primary energy** comes from gas? Natural gas has, for decades, lagged behind coal and oil as an energy source. But today, its consumption is growing rapidly – often as a replacement for coal in the energy mix. Gas is a major provider of [electricity production](http://ourworldindata.org/electricity-mix) and a key source of heat. This interactive map shows the share of primary energy from gas worldwide. <Chart url="https://ourworldindata.org/grapher/gas-share-energy"/> ### What share of **electricity** comes from gas? Gas is now the second largest source of electricity production globally. Its contribution is growing quickly in many countries as they substitute it for coal in the electricity mix. From a climate perspective, this transition is positive since gas typically [emits less CO](https://ourworldindata.org/grapher/carbon-dioxide-emissions-factor)[2](https://ourworldindata.org/grapher/carbon-dioxide-emissions-factor) per unit of energy. But, we still ultimately want to shift away from gas towards low-carbon sources such as renewables and nuclear. Gas is now the second largest source of electricity production globally. Its contribution is growing quickly in many countries as they substitute it for coal in the electricity mix. From a climate perspective, this transition is positive since gas typically [emits less CO](https://ourworldindata.org/grapher/carbon-dioxide-emissions-factor)[2](https://ourworldindata.org/grapher/carbon-dioxide-emissions-factor) per unit of energy. But, we still ultimately want to shift away from gas towards low-carbon sources such as renewables and nuclear. This interactive map shows the share of electricity that comes from gas worldwide. <Chart url="https://ourworldindata.org/grapher/share-electricity-gas"/> ## Fossil fuel reserves ### Coal reserves In previous sections, we examined how much fossil fuels different countries produced or consumed. But where in the world do our existing reserves of fossil fuels remain? Which countries have the potential to extract and sell them? In the interactive chart, we see proven coal reserves across the world. It's important to distinguish _reserves_ versus _resources_ here. "Proven reserves" represent coal that we know with reasonable certainty could be recovered in the future under existing economic and technological operating conditions. In other words, we know it's there, and it would be technologically and economically feasible to extract it. _Reserves_ represent only some fraction of _resources_, however; we continue to discover new quantities of coal, and with time more becomes technologically feasible to extract. This means our quantity of _reserves_ changes all the time – not only based on how much we consume, but by how many new resources are 'unlocked'. <Chart url="https://ourworldindata.org/grapher/coal-proved-reserves"/> ### Gas reserves Where in the world do we have gas reserves? Which countries have the ability to extract, consume, and trade? In the interactive chart, we see proven gas reserves across the world. It's important to distinguish _reserves_ versus _resources_ here. "Proven reserves" represent coal that we know with reasonable certainty could be recovered in the future under existing economic and technological operating conditions. In other words, we know it's there, and it would be technologically and economically feasible to extract it. _Reserves_ represent only some fraction of _resources_, however; we continue to discover new quantities of gas, and with time more becomes technologically feasible to extract. This means our quantity of _reserves_ changes all the time – not only based on how much we consume, but by how many new resources are 'unlocked'. We look at the difference between _reserves_ and _resources_ in more detail **[here](http://ourworldindata.org/fossil-fuels#reserves-vs-resources-when-does-a-resource-become-a-reserve)**. <Chart url="https://ourworldindata.org/grapher/natural-gas-proved-reserves"/> ## Definitions and measurement ### Reserves vs. resources: when does a resource become a reserve? The terms “reserves” and “resources” are often used interchangeably. However, there is an important distinction between the two. The chart explains this distinction visually. Every reserve is indeed a resource, but not every resource is a reserve. Two requirements determine whether a mineral resource becomes a reserve. The first is the degree of certainty that it exists: the planet likely has many mineral resources that we have not yet discovered. So to be defined as a reserve, we must have either a proven, probable, or possible understanding of its existence. The second criterion relates to the economic feasibility of being able to access and extract the mineral resource. To be defined as a reserve, it must be economically and technologically viable to recover. If the economics are subeconomic (i.e. would result in a net loss) or marginal, a mineral resource is not defined as a reserve. Whilst the original source of this concept – the American geologist Vincent McKelvey – visualized it as a static box, this transition between resources and reserve classifications is dynamic. As we discover previously unknown resources and develop improved extraction technologies for economic recovery, this reserve box can grow with time (or shrink as we consume them). <Image filename="Reserves-vs-Resources.png"/> Vaclav Smil (2017). [Energy Transitions: Global and National Perspectives](http://vaclavsmil.com/2016/12/14/energy-transitions-global-and-national-perspectives-second-expanded-and-updated-edition/). This dataset is collated by Our World in Data based on several data sources, including: Powering Past Coal Alliance (PPCA): https://www.poweringpastcoal.org/Beyond Coal EU: https://beyond-coal.eu/coal-exit-tracker/Bloomberg Global Coal Countdown: https://bloombergcoalcountdown.com/EMBER Climate: https://ember-climate.org/National announcements during the COP26 Climate Summit. | Fossil fuels |