World energy supply and consumption refers to the global primary energy production, energy conversion and trade, and final consumption of energy. Energy can be used in various different forms, as processed fuels or electricity, or for various different purposes, like for transportation or electricity generation. Energy production and consumption are an important part of the economy. A serious problem concerning energy production and consumption is greenhouse gas emissions. Of about 50 billion tonnes worldwide annual total greenhouse gas emissions,[3] 36 billion tonnes of carbon dioxide was emitted due to energy (almost all from fossil fuels) in 2021.[4]
The goal set in the Paris Agreement to limit climate change will be difficult to achieve.[5] Many scenarios have been envisioned to reduce greenhouse gas emissions, usually by the name of net zero by 2050. As of 2022, energy consumption is still about 80% from fossil fuels.[6] The Gulf States and Russia are major energy exporters, with notable customers being the European Union and China, where domestically not enough energy is produced in order to satisfy energy demand. Energy consumption generally increases about 1-2% per year,[7] except for solar and wind energy which averaged 20% per year in the 2010s.[8][9]
The energy that is produced, like from fossil fuels, is processed in order to make it suitable for consumption by end users. The energy supply chain from initial production and final consumption involves many different activities, causing a loss of useful energy ultimately,[10] see exergy.
Energy consumption per capita in North America is very high, while in less developed countries it is low and usually more renewable.[11][12] There is a clear connection between energy consumption per capita, and GDP per capita.[13]
Availability of data
Many countries publish statistics on the energy supply and consumption of either their own country, of other countries of interest, or of all countries combined in one chart. One of the largest organizations in this field, the International Energy Agency (IEA), sells yearly comprehensive energy data which makes this data paywalled and difficult to access for internet users.[14] The organization Enerdata on the other hand publishes a free Yearbook, making the data more accessible.[6] Another trustworthy organization that provides accurate energy data, mainly referring to the USA, is the U.S. Energy Information Administration.
Primary energy production
World total primary energy consumption by type in 2020[15]
2021 world electricity generation by source (total generation was 28 petawatt-hours)[17]
This is the worldwide production of energy, extracted or captured directly from natural sources. In energy statistics, primary energy (PE) refers to the first stage where energy enters the supply chain before any further conversion or transformation process.
Energy production is usually classified as:
- Fossil, using coal, crude oil, and natural gas;
- Nuclear, using uranium;
- Renewable, using biomass, geothermal, hydropower, solar, wind, tidal, wave, among others.
Primary energy assessment by IEA follows certain rules[note 1] to ease measurement of different kinds of energy. These rules are controversial. Water and air flow energy that drives hydro and wind turbines, and sunlight that powers solar panels, are not taken as PE, which is set at the electric energy produced. But fossil and nuclear energy are set at the reaction heat, which is about three times the electric energy. This measurement difference can lead to underestimating the economic contribution of renewable energy.[18]
Enerdata displays data for "Total energy / production: Coal, Oil, Gas, Biomass, Heat and Electricity" and for "Renewables / % in electricity production: Renewables, non-renewables".[6]
The table lists worldwide PE and the countries producing most (76%) of that in 2021, using Enerdata. The amounts are rounded and given in million tonnes of oil equivalent per year (1 Mtoe = 11.63 TWh (3.23 megajoules), where 1 TWh = 109 kWh) and % of Total. Renewable is Biomass plus Heat plus renewable percentage of Electricity production (hydro, wind, solar). Nuclear is nonrenewable percentage of Electricity production. The above-mentioned underestimation of hydro, wind and solar energy, compared to nuclear and fossil energy, applies also to Enerdata.
The 2021 world total of 14800 MToe corresponds to 170,000 TW-hr/year, or about 20 TW.
| Total (MToe) | Coal | Oil & Gas | Renewable | Nuclear | |
|---|---|---|---|---|---|
| China | 2,950 | 71% | 13% | 10% | 6% |
| United States | 2,210 | 13% | 69% | 8% | 10% |
| Russia | 1,516 | 16% | 78% | 2% | 4% |
| Saudi Arabia | 610 | 0 | 100% | 0 | 0 |
| Iran | 354 | 0 | 99% | 0 | 1% |
| United Arab Emirates | 218 | 0 | 99% | 0 | 1% |
| India | 615 | 50% | 11% | 33% | 6% |
| Canada | 536 | 5% | 81% | 10% | 4% |
| Indonesia | 451 | 69% | 17% | 14% | 0 |
| Australia | 423 | 64% | 33% | 3% | 0 |
| Brazil | 325 | 1% | 55% | 42% | 2% |
| Nigeria | 249 | 0 | 47% | 53% | 0 |
| Algeria | 150 | 0 | 100% | 0 | 0 |
| South Africa | 151 | 91% | 1% | 8% | 0 |
| Norway | 214 | 0 | 93% | 7% | 0 |
| France | 128 | 0 | 1% | 34% | 65% |
| Germany | 102 | 27% | 3% | 47% | 23% |
| World | 14800 | 27% | 53% | 13% | 7% |
Energy conversion and trade
| Nation | Export minus Import in 2021 (MToe)[19] |
|---|---|
| Russia | 682 |
| Saudi Arabia | 388 |
| Australia | 296 |
| Canada | 245 |
| Indonesia | 226 |
| Norway | 185 |
| Italy | -114 |
| Turkey | -118 |
| Germany | -187 |
| South Korea | -239 |
| India | -323 |
| Japan | -357 |
| China | -803 |
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Primary energy is converted in many ways to energy carriers, also known as secondary energy:[20]
- Coal mainly goes to thermal power stations. Coke is derived by destructive distillation of bituminous coal.
- Crude oil goes mainly to oil refineries
- Natural-gas goes to natural-gas processing plants to remove contaminants such as water, carbon dioxide and hydrogen sulfide, and to adjust the heating value. It is used as fuel gas, also in thermal power stations.
- Nuclear reaction heat is used in thermal power stations.
- Biomass is used directly or converted to biofuel.
Electricity generators are driven by steam or gas turbines in a thermal plant, or water turbines in a hydropower station, or wind turbines, usually in a wind farm. The invention of the solar cell in 1954 started electricity generation by solar panels, connected to a power inverter. Mass production of panels around the year 2000 made this economic.
Much primary and converted energy is traded among countries. The table lists countries with large difference of export and import in 2021, expressed in Mtoe. A negative value indicates that much energy import is needed for the economy.[19] Russian gas exports were reduced a lot in 2022,[21] as pipelines to Asia plus LNG export capacity is much less than the gas no longer sent to Europe.[22]
Transport of energy carriers is done by tanker ship, tank truck, LNG carrier, rail freight transport, pipeline and by electric power transmission.
Total energy supply
| TES | PE | |
|---|---|---|
| China | 3,650 | 2,950 |
| India | 927 | 615 |
| Russia | 811 | 1,516 |
| Japan | 400 | 52 |
| S-Korea | 298 | 151 |
| Canada | 289 | 536 |
| Germany | 286 | 102 |
| Saudi Arabia | 219 | 610 |
| Year | TES |
|---|---|
| 1990 | 8,700 |
| 2000 | 9,900 |
| 2010 | 12,600 |
| 2019 | 14,400 |
| 2020 | 13,800 |
| 2021 | 14,500 |
Total energy supply (TES) indicates the sum of production and imports subtracting exports and storage changes.[23] For the whole world TES nearly equals primary energy PE because imports and exports cancel out, but for countries TES and PE differ in quantity, and also in quality as secondary energy is involved, e.g., import of an oil refinery product. TES is all energy required to supply energy for end users.
The tables list TES and PE for some countries where these differ much, both in 2021 and TES history. Most growth of TES since 1990 occurred in Asia. The amounts are rounded and given in Mtoe. Enerdata labels TES as Total energy consumption.[24]
25% of worldwide primary production is used for conversion and transport, and 6% for non-energy products like lubricants, asphalt and petrochemicals.[14] In 2019 TES was 606 EJ and final consumption was 418 EJ, 69% of TES.[25] Most of the energy lost by conversion occurs in thermal electricity plants and the energy industry own use.
Discussion about energy loss
There are different qualities of energy. Heat, especially at a relatively low temperature, is low-quality energy, whereas electricity is high-quality energy. It takes around 3 kWh of heat to produce 1 kWh of electricity. But by the same token, a kilowatt-hour of this high-quality electricity can be used to pump several kilowatt-hours of heat into a building using a heat pump. Electricity can be used in many ways in which heat cannot. So the loss of energy incurred in thermal electricity plants is not comparable to a loss due to, say, resistance in power lines, because of quality differences.
In fact, the loss in thermal plants is due to poor conversion of chemical energy of fuel to electricity by combustion. Chemical energy of fuel is not low-quality because conversion to electricity in fuel cells can theoretically approach 100%. So energy loss in thermal plants is real loss.
Final consumption
Total final consumption (TFC) is the worldwide consumption of energy by end-users (whereas primary energy consumption (Eurostat)[27] or total energy supply (IEA) is total energy demand and thus also includes what the energy sector uses itself and transformation and distribution losses). This energy consists of fuel (78%) and electricity (22%). The tables list amounts, expressed in million tonnes of oil equivalent per year (1 Mtoe = 11.63 TWh) and how much of these is renewable energy. Non-energy products are not considered here. The data are of 2018.[14][28] The world's renewable share of TFC was 18% in 2018: 7% traditional biomass, 3.6% hydropower and 7.4% other renewables.[29]
In the period 2005–2017 worldwide final consumption of coal increased by 23%, of oil and gas increased by 18%, and that of electricity increased by 41%.[14]
Fuel comes in three types: Fossil fuel is natural gas, fuel derived from petroleum (LPG, gasoline, kerosene, gas/diesel, fuel oil), or from coal (anthracite, bituminous coal, coke, blast furnace gas). Secondly, there is renewable fuel (biofuel and fuel derived from waste). And lastly, the fuel used for district heating.
The amounts of fuel in the tables are based on lower heating value.
The first table lists final consumption in the countries/regions which use most (85%), and per person as of 2018. In developing countries fuel consumption per person is low and more renewable. Canada, Venezuela and Brazil generate most electricity with hydropower.
| Fuel Mtoe | of which renewable | Electricity Mtoe | of which renewable | TFC pp toe | |
|---|---|---|---|---|---|
| China | 1,436 | 6% | 555 | 30% | 1.4 |
| United States | 1,106 | 8% | 339 | 19% | 4.4 |
| Europe | 982 | 11% | 309 | 39% | 2.5 |
| Africa | 531 | 58% | 57 | 23% | 0.5 |
| India | 487 | 32% | 104 | 25% | 0.4 |
| Russia | 369 | 1% | 65 | 26% | 3.0 |
| Japan | 201 | 3% | 81 | 19% | 2.2 |
| Brazil | 166 | 38% | 45 | 78% | 1.0 |
| Indonesia | 126 | 21% | 22 | 14% | 0.6 |
| Canada | 139 | 8% | 45 | 83% | 5.0 |
| Iran | 147 | 0% | 22 | 6% | 2.1 |
| Mexico | 95 | 7% | 25 | 18% | 1.0 |
| S-Korea | 85 | 5% | 46 | 5% | 2.6 |
| Australia | 60 | 7% | 18 | 21% | 3.2 |
| Argentina | 42 | 7% | 11 | 27% | 1.2 |
| Venezuela | 20 | 3% | 6 | 88% | 0.9 |
| World | 7050 | 14% | 1970 | 30% | 1.2 |
The next table shows countries consuming most (85%) in Europe.
| Country | Fuel Mtoe | of which renewable | Electricity Mtoe | of which renewable |
|---|---|---|---|---|
| Germany | 156 | 10% | 45 | 46% |
| France | 100 | 12% | 38 | 21% |
| United Kingdom | 95 | 5% | 26 | 40% |
| Italy | 87 | 9% | 25 | 39% |
| Spain | 60 | 10% | 21 | 43% |
| Poland | 58 | 12% | 12 | 16% |
| Ukraine | 38 | 5% | 10 | 12% |
| Netherlands | 36 | 4% | 9 | 16% |
| Belgium | 26 | 8% | 7 | 23% |
| Sweden | 20 | 35% | 11 | 72% |
| Austria | 20 | 19% | 5 | 86% |
| Romania | 19 | 20% | 4 | 57% |
| Finland | 18 | 34% | 7 | 39% |
| Portugal | 11 | 20% | 4 | 67% |
| Denmark | 11 | 15% | 3 | 71% |
| Norway | 8 | 16% | 10 | 100% |
Energy for energy
Some fuel and electricity is used to construct, maintain and demolish/recycle installations that produce fuel and electricity, such as oil platforms, uranium isotope separators and wind turbines. For these producers to be economical the ratio of energy returned on energy invested (EROEI) or energy return on investment (EROI) should be large enough.
If the final energy delivered for consumption is E and the EROI equals R, then the net energy available is E-E/R. The percentage available energy is 100-100/R. For R>10 more than 90% is available but for R=2 only 50% and for R=1 none. This steep decline is known as the net energy cliff.[30]
Trends and outlook
| Part of a series on |
| Climate change mitigation |
|---|
Due to the COVID-19 pandemic, there was a significant decline in energy usage worldwide in 2020, but total energy demand worldwide had recovered by 2021, and has hit a record high in 2022.[31]
IEA scenarios
In World Energy Outlook 2023 the IEA notes that "We are on track to see all fossil fuels peak before 2030".[32]: 18 The IEA presents three scenarios:[32]: 17
- The Stated Policies Scenario (STEPS) provides an outlook based on the latest policy settings. The share of fossil fuel in global energy supply – stuck for decades around 80% – starts to edge downwards and reaches 73% by 2030.[32]: 18 This undercuts the rationale for any increase in fossil fuel investment.[32]: 19 Renewables are set to contribute 80% of new power capacity to 2030, with solar PV alone accounting for more than half.[32]: 20 The STEPS sees a peak in energy-related CO2 emissions in the mid-2020s but emissions remain high enough to push up global average temperatures to around 2.4 °C in 2100.[32]: 22 Total energy demand continues to increase through to 2050.[32]: 23 Total energy investment remains at about USD 3 trillion per year.[32]: 49
- The Announced Pledges Scenario (APS) assumes all national energy and climate targets made by governments are met in full and on time. The APS is associated with a temperature rise of 1.7 °C in 2100 (with a 50% probability).[32]: 92 Total energy investment rises to about USD 4 trillion per year after 2030.[32]: 49
- The Net Zero Emissions by 2050 (NZE) Scenario limits global warming to 1.5 °C.[32]: 17 The share of fossil fuel reaches 62% in 2030.[32]: 101 Methane emissions from fossil fuel supply cuts by 75% in 2030.[32]: 45 Total energy investment rises to almost USD 5 trillion per year after 2030.[32]: 49 Clean energy investment needs to rise everywhere, but the steepest increases are needed in emerging market and developing economies other than China, requiring enhanced international support.[32]: 46 The share of electricity in final consumption exceeds 50% by 2050 in NZE. The share of nuclear power in electricity generation remains broadly stable over time in all scenarios, about 9%.[32]: 106
Alternative scenarios
Alternative scenarios for achieving the Paris Climate Agreement Goals have been developed, using IEA data but proposing transition to nearly 100% renewables by mid-century, along with steps such as reforestation. Nuclear power and carbon capture are excluded in these scenarios.[33] The researchers say the costs will be far less than the $5 trillion per year governments currently spend subsidizing the fossil fuel industries responsible for climate change.[33]: ix
In the +2.0 C (global warming) Scenario total primary energy demand in 2040 can be 450 EJ = 10755 Mtoe, or 400 EJ = 9560 Mtoe in the +1.5 Scenario, well below the current production. Renewable sources can increase their share to 300 EJ in the +2.0 C Scenario or 330 EJ in the +1.5 Scenario in 2040. In 2050 renewables can cover nearly all energy demand. Non-energy consumption will still include fossil fuels.[33]: xxvii Fig. 5
Global electricity generation from renewable energy sources will reach 88% by 2040 and 100% by 2050 in the alternative scenarios. "New" renewables—mainly wind, solar and geothermal energy—will contribute 83% of the total electricity generated.[33]: xxiv The average annual investment required between 2015 and 2050, including costs for additional power plants to produce hydrogen and synthetic fuels and for plant replacement, will be around $1.4 trillion.[33]: 182
Shifts from domestic aviation to rail and from road to rail are needed. Passenger car use must decrease in the OECD countries (but increase in developing world regions) after 2020. The passenger car use decline will be partly compensated by strong increase in public transport rail and bus systems.[33]: xxii Fig.4
CO2 emission can reduce from 32 Gt in 2015 to 7 Gt (+2.0 Scenario) or 2.7 Gt (+1.5 Scenario) in 2040, and to zero in 2050.[33]: xxviii
See also
- Energy industry
- Domestic energy consumption
- Electric energy consumption
- Energy demand management
- Energy development
- Energy intensity
- Energy policy
- Energy security and renewable technology
- Sustainable energy
- World Energy Outlook
- World energy resources
- Lists
- List of countries by energy intensity
- List of countries by carbon dioxide emissions
- List of countries by electricity consumption
- List of countries by electricity production
- List of countries by energy consumption per capita
- List of countries by greenhouse gas emissions
- List of countries by renewable electricity production
- List of countries by energy consumption and production
- List of renewable energy topics by country and territory
Notes
- ↑ IEA Primary energy assessment:
- Fossil: based on lower heating value.
- Nuclear: heat produced by nuclear reactions, 3 times the electric energy, based on 33% efficiency of nuclear plants.
- Renewable:
- Biomass based on lower heating value.
- Electric energy produced by hydropower, wind turbines and solar panels.
- Geothermal power is set at more than 10 times the electric energy due to the very low efficiency of these plants.
References
- ↑ Jackson RB, et al. (2022). "Global fossil carbon emissions rebound near pre-COVID-19 levels". Environmental Research Letters. 17 (3): 031001. arXiv:2111.02222. Bibcode:2022ERL....17c1001J. doi:10.1088/1748-9326/ac55b6. S2CID 241035429. Retrieved 22 May 2022.
- ↑ "Energy consumption by source". Our World in Data. Retrieved 12 January 2024.
- ↑ Ritchie, Hannah; Roser, Max; Rosado, Pablo (11 May 2020). "CO₂ and Greenhouse Gas Emissions". Our World in Data. Archived from the original on 3 August 2020. Retrieved 5 September 2022.
- ↑ "Global CO2 emissions rebounded to their highest level in history in 2021 - News". IEA. Archived from the original on 15 August 2022. Retrieved 5 September 2022.
- ↑ "The Truth Behind the Climate Pledges – FEU-US". Archived from the original on 21 August 2022. Retrieved 1 September 2022.
- 1 2 3 "World Energy Statistics | Enerdata". Yearbook.enerdata.net. Archived from the original on 23 August 2022. Retrieved 26 August 2022.
- ↑ Ritchie, Hannah; Roser, Max; Rosado, Pablo (28 November 2020). "Energy". Our World in Data. Archived from the original on 16 April 2023. Retrieved 16 September 2022.
Global energy consumption continues to grow, but it does seem to be slowing – averaging around 1% to 2% per year.
- ↑ "Global wind and solar growth on track to meet climate targets". Reuters. 31 March 2022. Archived from the original on 16 April 2023. Retrieved 16 September 2022.
- ↑ "Global Electricity Review 2022". Ember. 29 March 2022. Archived from the original on 2 April 2022. Retrieved 16 September 2022.
- ↑ "Energy definitions". Archived from the original on 5 July 2023. Retrieved 16 August 2023.
- ↑ "Energy use per person". Archived from the original on 28 November 2020. Retrieved 9 September 2022.
- ↑ "Renewable energy consumption (% of total final energy consumption) | Data".
- ↑ "Energy use per person vs. GDP per capita, 2021". Our World in Data.
- 1 2 3 4 5 Data and Statistics. 2018. International Energy Agency. Archived 6 August 2021 at the Wayback Machine
- ↑ "Statistical Review of World Energy (2021)" (PDF). p. 13. Archived (PDF) from the original on 15 August 2021. Retrieved 19 August 2021.
- ↑ “Data Page: Primary energy consumption per capita”, part of the following publication: Hannah Ritchie, Pablo Rosado and Max Roser (2023) - “Energy”. Data adapted from U.S. Energy Information Administration, Energy Institute, Various sources. Retrieved from https://ourworldindata.org/grapher/per-capita-energy-use [online resource]
- ↑ "Yearly electricity data". ember-climate.org. 6 December 2023. Retrieved 23 December 2023.
- ↑ Sauar, Erik (31 August 2017). "IEA underreports contribution solar and wind by a factor of three compared to fossil fuels". energypost.eu. Energy Post. Archived from the original on 22 April 2018. Retrieved 22 April 2018.
- 1 2 "Balance of world energy trade | Global Energy Trading | Enerdata". Archived from the original on 13 August 2022. Retrieved 27 August 2022.
- ↑ Encyclopaedia Britannica, vol.18, Energy Conversion, 15th ed., 1992
- ↑ Attinasi, Maria Grazia; Doleschel, Julia; Gerinovics, Rinalds; Gunnella, Vanessa; Mancini, Michele (4 August 2022). "Trade flows with Russia since the start of its invasion of Ukraine". Archived from the original on 29 August 2022. Retrieved 29 August 2022.
- ↑ Tsafos, Nikos (4 May 2022). "Can Russia Execute a Gas Pivot to Asia?". www.csis.org. Archived from the original on 29 August 2022. Retrieved 29 August 2022.
- ↑ "International recommendations for energy statistics (IRES)" (PDF). UN Department of Economic and Social Affairs. 2018. p. 105. Archived (PDF) from the original on 11 June 2021. Retrieved 17 March 2022.
- ↑ "World Energy Consumption Statistics | Enerdata". Archived from the original on 31 August 2022. Retrieved 31 August 2022.
- ↑ Key world energy statistics 2021 Archived 6 July 2022 at the Wayback Machine p.6,34
- ↑ "Key World Energy Statistics 2019". International Energy Agency. 26 September 2019. pp. 6, 36. Archived from the original on 31 December 2019. Retrieved 7 December 2019.
- ↑ "Energy consumption in 2018" (PDF). Eurostat. Archived (PDF) from the original on 10 June 2021. Retrieved 10 June 2021.
- 1 2 "Data tables – Data & Statistics". Archived from the original on 3 February 2021. Retrieved 8 June 2021.
- ↑ GSR 2020 report Archived 23 September 2020 at the Wayback Machine Fig.1 p.32
- ↑ "Is There Such a Thing as a "Net Energy Cliff?"". 8 May 2017. Archived from the original on 20 September 2022. Retrieved 20 September 2022.
- ↑ "Global primary energy consumption by source". Our World in Data.
- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 https://www.iea.org/reports/world-energy-outlook-2023 Download pdf
- 1 2 3 4 5 6 7 Teske, Sven, ed. (2019). Achieving the Paris Climate Agreement Goals: Global and Regional 100% Renewable Energy Scenarios with Non-energy GHG Pathways for +1.5°C and +2°C. Springer International Publishing. p. 3. doi:10.1007/978-3-030-05843-2. ISBN 9783030058425. S2CID 198078901. Archived from the original on 15 April 2021. Retrieved 8 June 2021.
External links
- Enerdata - World Energy & Climate Statistics
- International Energy Outlook, by the U.S. Energy Information Administration
- World Energy Outlook from the IEA
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