World energy supply and consumption

World energy supply and consumption is global production and preparation of fuel, generation of electricity, energy transport, and energy consumption. It is a basic part of economic activity. It includes heat,[2] but not energy from food.

Coal, oil, and natural gas remain the primary global energy sources even as renewables have begun rapidly increasing.[1]
World energy mix, 1965 to 2020

Energy production is 80% fossil.[3] Half of that is produced by China, the United States and the Arab states of the Persian Gulf. The Gulf States and Russia export most of their production, largely to the European Union and China, where not enough energy is produced to satisfy demand. Energy production is increasing 1 to 2% per year,[4] except for solar and wind energy which averaged 20 % per year in the 2010s.[5][6]

World Wind and Solar power (GW) [7]
YearWindSolar
2012267104
2015416228
2018563489
2021825849

Produced energy, for instance crude oil, is processed to make it suitable for consumption by end users. The supply chain between production and final consumption involves many conversion activities and much trade and transport among countries, causing a loss of one quarter of energy before it is consumed.

Energy consumption per person in North America is very high while in most of Africa it is low and more renewable.[8][9] There was a significant decline in energy usage worldwide caused by the COVID-19 pandemic, especially in the iron and steel industry as demand for new construction shrank. An increase in the global demand for manufactured goods by the iron and steel industry, could increase consumption to levels similar to that in 2019.[10]

Of about 50 billion tonnes worldwide annual total greenhouse gas emissions,[11] 36 billion tonnes of carbon dioxide was emitted due to energy (almost all from fossil fuels) in 2021.[12] The goal, set in the Paris Agreement to limit climate change, will not nearly be reached.[13] Several scenarios to achieve the goal are developed.

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.[3] This article provides a brief description of energy supply and consumption, using statistics summarized in tables, of the countries and regions that produce and consume most.

Primary energy production

World total primary energy consumption by fuel in 2020[15]

  Oil (31.2%)
  Coal (27.2%)
  Natural Gas (24.7%)
  Hydro (renewables) (6.9%)
  Nuclear (4.3%)
  Others (renewables) (5.7%)
World PE per person, 2021

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:

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.[16]

Enerdata[3] displays:

  • TOTAL ENERGY / PRODUCTION: Coal, Oil, Gas, Biomass, Heat and Electricity.
  • RENEWABLES / % IN ELECTRICITY PRODUCTION: Renewables, Non renewables.

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, 1 TWh = 109 kWh) and % of Total. Renewable is Biomass plus Heat plus renewable percentage of Electricity production (hydro, wind, solar). Nuclear is non renewable percentage of Electricity production. The above mentioned underestimation of hydro, wind and solar energy, compared to nuclear and fossil energy, applies also to Enerdata.

Largest PE producers (76%)
TotalCoalOil & GasRenewableNuclear
China295071%13%10%6%
United States221013%69%8%10%
Russia151616%78%2%4%
Saudi Arabia6100100%00
Iran354099%01%
United Arab Emirates218099%01%
India61550%11%33%6%
Canada5365%81%10%4%
Indonesia45169%17%14%0
Australia42364%33%3%0
Brazil3251%55%42%2%
Nigeria249047%53%0
Algeria1500100%00
South Africa15191%1%8%0
Norway214093%7%0
France12801%34%65%
Germany10227%3%47%23%
World1480027%53%13%7%

For more detailed energy production, see:

  • List of countries by electricity production
  • Nuclear power by country

Energy conversion and trade
Primary energy sources are transformed by the energy sector to generate energy carriers.

Primary energy is converted in many ways to energy carriers, also known as secondary energy.[17]

  • 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.

2018 World electricity generation (26,700 TWh) by source (IEA, 2019)[18]

  Coal (38%)
  Gas (23%)
  Hydro and other (19%)
  Nuclear (10%)
  Solar PV and wind (7%)
  Oil (3%)
Export minus Import in 2021[19]
Russia682
Saudi Arabia388
Australia296
Canada245
Indonesia226
Norway185
Italy-114
Turkey-118
Germany-187
South Korea-239
India-323
Japan-357
China-803

Electricity generators are driven by

The invention of the solar cell in 1954 started electricity generation by solar panels, connected to a power inverter. Around 2000 mass production of panels 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,[20] as pipelines to Asia plus LNG export capacity is much less than the gas no longer sent to Europe.[21]

Big transport goes by tanker ship, tank truck, LNG carrier, rail freight transport, pipeline and by electric power transmission.

Total energy supply
Total Energy Supply and Primary Energy
TESPE
China36502950
India927615
Russia8111516
Japan40052
S-Korea298151
Canada289536
Germany286102
Saudi Arabia219610

Total energy supply (TES) indicates the sum of production and imports subtracting exports and storage changes.[22] 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.

World TES history
YearTES
19908700
20009900
201012600
201914400
202013800
202114500

The tables list TES and PE for some countries where these differ much, 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.[23]

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 fnal consumption was 418 EJ, 69% of TES.[24] Most of the energy lost by conversion occurs in thermal electricity plants and the energy industry own use.

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. And electricity can be used in many ways in which heat cannot. So the "loss" of energy incurred when generating electricity is not the same as a loss due to, say, resistance in power lines.

Final consumption

World total final consumption of 9,717 Mtoe by region in 2017 (IEA, 2019)[25]

  OECD (38.2%)
  Middle East (5.1%)
  Non-OECD Eurasia (7.5%)
  China (20.6%)
  Rest of Asia (13.5%)
  Non-OECD Americas (4.8%)
  Africa (6.1%)
  International aviation and marine bunkers (4.2%)

Total final consumption (TFC) is the worldwide consumption of energy by end-users (whereas primary energy consumption (Eurostat)[26] 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][27]

Fuel:

  • fossil: natural gas, fuel derived from petroleum (LPG, gasoline, kerosene, gas/diesel, fuel oil), from coal (anthracite, bituminous coal, coke, blast furnace gas).
  • renewable: biofuel and fuel derived from waste.
  • for District heating.

The amounts are based on lower heating value.

The first table lists final consumption in the countries/regions which use most (85%), and per person. In developing countries fuel consumption per person is low and more renewable. Canada, Venezuela and Brazil generate most electricity with hydropower.

Final consumption in most using countries and per person [14][27]
Fuel
Mtoe		of which
renewable		Electricity
Mtoe		of which
renewable		TFC pp
toe
China14366%55530%1.4
United States11068%33919%4.4
Europe98211%30939%2.5
Africa53158%5723%0.5
India48732%10425%0.4
Russia3691%6526%3.0
Japan2013%8119%2.2
Brazil16638%4578%1.0
Indonesia12621%2214%0.6
Canada1398%4583%5.0
Iran1470%226%2.1
Mexico957%2518%1.0
S-Korea855%465%2.6
Australia607%1821%3.2
Argentina427%1127%1.2
Venezuela203%688%0.9
World705014%197030%1.2

The world's renewable share of TFC was 18% in 2018: 7% traditional biomass, 3.6% hydropower and 7.4% other renewables.[28]

In Africa 32 of the 48 nations are declared to be in an energy crisis by the World Bank. See Energy in Africa.

The next table shows countries consuming most (85%) in Europe.

Countries consuming most (85%) in Europe.
CountryFuel
Mtoe		of which
renewable		Electricity
Mtoe		of which
renewable
Germany15610%4546%
France10012%3821%
United Kingdom955%2640%
Italy879%2539%
Spain6010%2143%
Poland5812%1216%
Ukraine385%1012%
Netherlands364%916%
Belgium268%723%
Sweden2035%1172%
Austria2019%586%
Romania1920%457%
Finland1834%739%
Portugal1120%467%
Denmark1115%371%
Norway816%10100%

Trend

In the period 2005–2017 worldwide final consumption[14] of

  • coal increased 23%,
  • oil and gas increased 18%,
  • electricity increased 41%.

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 economic 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.[29]

Outlook

IEA scenarios

In World Energy Outlook 2021 (WEO) the IEA presents four scenarios [30]:27 based on the computer Model for the Assessment of Greenhouse Gas Induced Climate Change (MAGICC).[31] Net Zero by 2050 (NZE)[32] is an integral part of the WEO.

In Stated Policies Scenario (STEPS) IEA assesses the likely effects of 2021 policy settings. This would lead to global average temperatures still rising when they hit 2.6 °C above pre-industrial levels in 2100.[30]p. 16

The Announced Pledges Scenario (APS) assumes that all climate commitments will be met in full and on time. Average temperature will rise to around 2.1 °C by 2100 and continues to increase.[30]Fig.1.5

The Sustainable Development Scenario (SDS) assumes in addition to APS a surge in clean energy policies and investment. Advanced economies reach net zero emissions by 2050, China around 2060, and all other countries by 2070 at the latest. Then temperature will peak at 1.7 °C by 2050 and could decline to 1.5 °C by 2100.[30]p. 95, Fig.1.5 In 2050 energy supply will be 55% renewable.[30] Table A.5, A.6 Electricity generation will be 58% renewable and 8% nuclear.[30] Table A.15, A.16, A19

The Net Zero Emissions by 2050 Scenario (NZE) reaches global net zero CO2 emissions by 2050. Temperature will peak at 1.7 °C by 2050 and decline to 1.4 °C by 2100.[30]Fig.1.4,1.5 In 2050 half of energy consumption will be electricity, generated for nearly 70% by wind and solar PV, about 20% with other renewable sources and most of the remainder from nuclear power. The other half is biomass, gas and oil with CCS (carbon capture and storage) or non-energetic (asphalt, petrochemicals).[32]: 18, 19, Fig. 2.9  Use of coal falls 90%, oil 75% and gas 55%.[32]: Fig. 3.2  Emission by the transport sector drops 90%, the remainder mainly caused by heavy trucks, shipping and aviation.[32]: 131, 132 

Investing in new fossil fuels is no longer necessary now (2021).[32]: 21  Annual energy investment is expected to increase from just over $2 trillion worldwide on average over the past five years to nearly $5 trillion by 2030 and to $4.5 trillion by 2050. The bulk will be spent on generating, storing, and distributing electricity, and electrical end-user equipment (heat pumps, vehicles).[32]: 81 

Alternative scenarios

Alternative Achieving the Paris Climate Agreement Goals[33] scenarios are developed by a team of 20 scientists at the University of Technology of Sydney, the German Aerospace Center, and the University of Melbourne, 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. 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
  • Climate change
  • Energy industry
    • Environmental impact of the energy industry
  • For history, see articles on the control of fire, extraction of coal and oil, use of wind- and watermills and sailing ships.
Lists
  • Energy intensity by country
  • 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 total primary energy consumption and production
  • List of renewable energy topics by country and territory

Notes
  1. 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.
    See , chapter 7

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