Wikisage, the free encyclopedia of the second generation, is digital heritage

World energy supply: Difference between revisions

From Wikisage
Jump to navigation Jump to search
Line 47: Line 47:
The table lists the world-wide production and the countries/regions producing most (86%) of that.
The table lists the world-wide production and the countries/regions producing most (86%) of that.
The Persian Gulf States are Saudi Arabia, Iran, Qatar, Arab Emirates, Kuwait, Iraq and Oman, in order of production.
The Persian Gulf States are Saudi Arabia, Iran, Qatar, Arab Emirates, Kuwait, Iraq and Oman, in order of production.
The amounts are given in million tonnes of oil equivalent per year (Mtoe/a, 1 Mtoe = 11.63 TWh). The data are of 2013.<ref name=balances>[http://www.iea.org/statistics/statisticssearch/ IEA Statistics search, Balances]</ref><ref>The International Energy Agency uses the energy unit Mtoe. Practically the same data are presented by the US Energy Information Administration http://www.eia.doe.gov/ expressed in quads. 1 quad = 10<sup>15</sup> [[BTU]] = 25.2 Mtoe.</ref>
The amounts are given in million tonnes of oil equivalent per year (Mtoe/a, 1 Mtoe = 11.63 TWh). The data are of 2013.<ref name=balances>[http://www.iea.org/statistics/statisticssearch/ IEA Statistics search, Balances]</ref><ref>The International Energy Agency uses the energy unit Mtoe. Practically the same data are presented by the US Energy Information Administration http://www.eia.doe.gov/ expressed in quads. 1 quad = 10<sup>15</sup> BTU = 25.2 Mtoe.</ref>





Revision as of 09:16, 25 October 2016

World energy supply consists of worldwide production and preparation of fuel (fossil and nuclear), generation of electricity, and energy transport. Here contemporary energy supply is outlined, statistical data rather than policy. Energy supply is a vast industry, powering the world economy. More than 10% of the world expenditures is used for energy purposes.[1]

Short lists of countries are given where most energy is produced[2] and where it is consumed, distinguishing fossil, nuclear and renewable energy. Of all produced energy 80% is fossil. Half of that is produced by China, the United States and the Persian Gulf States. The Gulf States and Norway export most of their production, largely to the European Union and Japan where not sufficient energy is produced to satisfy their users.

Produced energy, for instance crude oil, must be processed to make it suitable for consumption by end users. So the supply chain between production and final consumption involves many conversion activities and much trade and transport among countries.

Institutions such as the International Energy Agency (IEA) and the U.S. Energy Information Administration (EIA) collect, analyse and publish comprehensive energy data periodically. The country lists below are based on these data. The energy used by the poorest billion people is not represented in the data. They have no electricity and gather some burn-wood in the surroundings.

In view of contemporary energy policy of countries the IEA expects[3] that the worldwide energy consumption in 2040 will have increased 30% and that the goal, set in the Paris Agreement about Climate Change, will not be reached.

Energy production

World primary energy production

World total primary energy production

██ World (1015 Btu)[4]

██  China

██  Russia

██  Africa

██  United States

██  Europe

██  Central and South America

Note the different y-axis for world (left) en regional (right) production

This is the world-wide production of primary energy (PE) from fossil, nuclear and renewable sources. Primary means: extracted or captured directly from natural sources. Note the strong production increase of China.

Energy sources are usually classified as

  • fossil, using coal, lignite, petroleum and natural gas,
  • nuclear, using uranium,
  • renewable, using hydro power, biomass, wind and solar energy, among others.

Primary energy assessment follows certain rules[5] to ease measurement and comparison of different kinds of energy. Due to these rules uranium is not counted as PE but as the natural source of nuclear PE. Similarly water and air flow energy that drives hydro and wind turbines, and sunlight that powers solar panels, are not taken as PE but as PE sources (PES).

The table lists the world-wide production and the countries/regions producing most (86%) of that. The Persian Gulf States are Saudi Arabia, Iran, Qatar, Arab Emirates, Kuwait, Iraq and Oman, in order of production. The amounts are given in million tonnes of oil equivalent per year (Mtoe/a, 1 Mtoe = 11.63 TWh). The data are of 2013.[6][7]


Total
Mtoe/a
Fossil Nuclear Renewable
WORLD 13600 81% 5% 14%
China 2570 86% 1% 13%
United States 1880 80% 11% 8%
Persian Gulf States 1742 0% 0% 0%
Russia 1316 95% 3% 2%
Africa 1129 65% 0% 33%
European Union 793 47% 29% 26%
India 523 59% 2% 39%
Indonesia 460 84% 0% 16%
Canada 435 83% 6% 11%
Brazil 253 51% 2% 47%
Mexico 217 92% 1% 7%
Venezuela 192 96% 0% 4%
Norway 192 93% 0% 7%

Fossil energy production in the world is 36% coal, 38% petroleum and 26% natural gas.

The top producers in Africa are Nigeria (256), S-Africa (166) and Algeria (138).

In the EU France (136, mainly nuclear), Germany (120), UK (110), Poland (71, mainly coal) and Netherlands (69, mainly natural gas) produce most.

Between production and final consumption

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

  • Lignite and coal mainly go to thermal power stations. Coke is derived by destructive distillation of bituminous coal.
  • Petroleum goes mainly to oil refineries and is also used to generate electricity and to make coke.
  • Natural-gas goes to processing plants to remove contaminants such as water, carbon dioxide and hydrogen sulfide, and mixed to adjust the heating value.
  • Nuclear reaction heat is used to generate electricity.
  • Biomass is converted to biofuel.

Electricity generators are driven by

Export Import
Persian Gulf States 1167 21
Russia 620 27
Indonesia 301 56
Canada 263 78
Norway 166 8
European Union 539 1451
Japan 18 455
India 72 327
S-Korea 57 291
  • Steam or gas turbines in a thermal plant,
  • or water turbines in a hydropower station,
  • or wind turbines, stand-alone or in a wind farm.

The invention of the PV cell in 1954 started electricity generation by solar panels, connected to a power inverter. Around 2000 mass production of panels made this economical.

Primary and converted energy is much traded among countries. The table lists countries/regions that export most of their energy, followed by countries that must import much for their economies. The quantities are expressed in Mtoe/a and the data are of 2013.[6]

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

32% of primary production is used for conversion and transport, and 6% for non-energy products like lubricants, asphalt and petrochemicals. 62% remains for end-users.

Final consumption

This is the world-wide consumption of energy by end-users. This energy consists of fuel (80%) and electricity (20%). The tables lists 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 2013.[6]

Fuel:

  • Fossil fuel: natural gas, fuel derived from petroleum (LPG, gasoline, kerosene, gas/diesel, fuel oil), from coal (anthracite, bituminous coal, coke, lignite, blast furnace gas)
  • Renewable fuel: biofuel and fuel derived from waste, so far as it is traded.
  • District heating.[8]

The amounts are based on lower heating value.

Electricity:

See World electricity consumption for details, but note that the table there includes also internal consumption of power plants, about 10% of the totals.

The first table lists world-wide final consumption and the countries/regions which use 3/4 of that. In developing countries fuel consumption is more renewable. Canada and Brazil generate most electricity with hydropower.

Fuel
Mtoe/a
of which renewable Electricity
Mtoe/a
of which renewable Inhabitants
million
WORLD 6800 17% 1680 21% 7120
China 1390 16% 387 20% 1360
United States 1050 7% 325 13% 316
European Union 801 10% 238 13% 508
Africa 485 62% 51 13% 1110
India 415 41% 77 16% 1250
Russia 300 1% 64 21% 143
Japan 191 2% 82 12% 127
Brazil 170 34% 42 82% 200
Indonesia 135 40% 16 11% 250
Canada 133 9% 42 59% 35
Iran 130 0% 18 5% 77
Mexico 91 9% 21 23% 118
s-Korea 82 4% 42 2% 50

The next table shows countries consuming most (80%) in the European Union, and Norway. The last three countries generate electricity largely renewable.

Fuel
Mtoe/a
of which renewable Electricity
Mtoe/a
of which renewable Inhabitants
million
Germany 158 9% 45 25% 82
France 106 12% 38 16% 66
United Kingdom 96 2% 27 13% 64
Italy 90 10% 25 32% 61
Spain 56 9% 20 31% 47
Poland 51 12% 11 11% 39
Netherland 38 3% 9 14% 17
Belgium 26 8% 7 14% 11
Portugal 11 20% 4 60% 10
Denmark 11 13% 3 48% 6
Norway 9 11% 9 98% 5

Outlook until 2040

In view of contemporary energy policy of countries the IEA expects[3] that the worldwide energy consumption in 2040 will have increased 30%, mainly by strong growth in India and China, while EU and Japan will use less and the US about the same.

Electricity use will increase 60% by

  • growing economies in developing countries where now about 1/6 of all people in the world have no electricity, and
  • electrification of transport and heating which now uses mainly fossil fuel.

More than half of this 60% increase will be generated using wind and sun. The share of coal for electricity generation will decrease from 40% to 30%.

With this policy the goal, set in the 2015 Paris Agreement, will not be reached according to the IEA. In a special report (Energy and Climate Change[9]) the agency has also calculated (Bridge Scenario) extra measures that can be taken at no net economic cost (see p.7 in IEA Outlook or p.13 and 67 in IEA special report):

  • Increase energy efficiency in industry, buildings and transport.
  • Gradually phase-out least efficient coal plants and prohibit building new coal plants.
  • Increase investments in renewable energy technologies from 270 billion in 2014 to 400 billion USD in 2030.
  • Phase-out of subsidy on fossil fuels for end users in 2030.
  • Decrease methane emissions in oil and gas production.

In the Bridge Scenario (see Annex B p.154 in the special report) the renewable part of primary energy increases from 14% in 2013 to 20% in 2030.

See also

"Providing all global energy with wind, water, and solar power" in Mark Jacobson.

Notes and references

  1. Energy expenditures
  2. Energy is used in the economic sense, not in the physical sense where it is conserved
  3. 3.0 3.1 "World Energy Outlook 2015". IEA. http://www.iea.org/publications/freepublications/publication/world-energy-outlook-2015---executive-summary---english.html. 
  4. quad = 1015 Btu = 293 TWh, eia.gov–U.S. Energy Information Administration International Energy Statistics
  5. IEA Statistics manual, chapter 7
    • 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 energy used in power plants is set at 10 times the electric energy, assuming 10% efficiency.
  6. 6.0 6.1 6.2 IEA Statistics search, Balances
  7. The International Energy Agency uses the energy unit Mtoe. Practically the same data are presented by the US Energy Information Administration http://www.eia.doe.gov/ expressed in quads. 1 quad = 1015 BTU = 25.2 Mtoe.
  8. In energy statistics this is not part of fuel but a separate part of final consumption, next to electricity, see IEA Statistics search, Electricity and Heat.
  9. IEA special report