Portal:Energy

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Introduction

A plasma globe, using electrical energy to create plasma, light, heat, movement and a faint sound

Energy (from Ancient Greek ἐνέργεια (enérgeia) 'activity') is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light. Energy is a conserved quantity—the law of conservation of energy states that energy can be converted in form, but not created or destroyed; matter and energy may also be converted to one another. The unit of measurement for energy in the International System of Units (SI) is the joule (J).

Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object (for instance due to its position in a field), the elastic energy stored in a solid object, chemical energy associated with chemical reactions, the radiant energy carried by electromagnetic radiation, and the internal energy contained within a thermodynamic system. All living organisms constantly take in and release energy.

Due to mass–energy equivalence, any object that has mass when stationary (called rest mass) also has an equivalent amount of energy whose form is called rest energy, and any additional energy (of any form) acquired by the object above that rest energy will increase the object's total mass just as it increases its total energy.

Human civilization requires energy to function, which it gets from energy resources such as fossil fuels, nuclear fuel, or renewable energy. The Earth's climate and ecosystems processes are driven by the energy the planet receives from the Sun (although a small amount is also contributed by geothermal energy). (Full article...)

Selected article

Fluctuations of OPEC net oil export revenues since 1972, showing elevated inflation-adjusted levels during 1974–1981 and 2005–2014

Petrodollar recycling is the international spending or investment of a country's revenues from petroleum exports ("petrodollars"). It generally refers to the phenomenon of major petroleum-exporting states, mainly the OPEC members plus Russia and Norway, earning more money from the export of crude oil than they could efficiently invest in their own economies. The resulting global interdependencies and financial flows, from oil producers back to oil consumers, can reach a scale of hundreds of billions of U.S. dollars per year – including a wide range of transactions in a variety of currencies, some pegged to the U.S. dollar and some not. These flows are heavily influenced by government-level decisions regarding international investment and aid, with important consequences for both global finance and petroleum politics. The phenomenon is most pronounced during periods when the price of oil is historically high.

The term petrodollar was coined in the early 1970s during the oil crisis, and the first major petrodollar surge (1974–1981) resulted in more financial complications than the second (2005–2014). (Full article...)

More selected articles

Selected image

Photo credit: NASA/TRACE
Plasma being channeled by the magnetic field loops of a sunspot.

Did you know?

SEGS solar power plant

• The 1,222 km long Nordstream pipeline between Russia and the Germany is the world's longest underwater pipeline?

• Due to the vast quantity of coal burnt in fossil fuel power plants, they cause more radioactive contamination than nuclear power plants?

• Chinese energy policy includes using renewable energy for the rural electrification of 3.5 million households by 2010?

• The 354 MW SEGS solar power plant (pictured) in the Mojave Desert is the world's largest?

• Known reserves of petroleum are typically estimated at around 1.2 trillion barrels, or at 3.74 trillion barrels if oil sands are included?

• The concentration of the greenhouse gas carbon dioxide has increased from about 280 parts per million to about 380 ppm since the start of the Industrial Revolution. That's an increase of 35.71%. The estimated population of the world in 1750 was 791 Million people. The estimated population of the world on June 30th, 2007 was 6.6 Billion people. That's an increase of 734.39%.?

• In the 1990s Bougainville conflict, islanders cut off from oil supplies due to a blockade used coconut oil to fuel their vehicles?

• The Organization of the Petroleum Exporting Countries (OPEC) is considered a cartel by many observers?

Selected biography

Marion King Hubbert (1903–1989) was a geophysicist who made several important contributions to geology and geophysics, most notably the Hubbert curve and Hubbert peak theory (or peak oil), with important political ramifications.

Born in Texas, Hubbert studied geology, mathematics, and physics at the University of Chicago. He pursued his Ph.D. while working for the Amerada Petroleum Company, then worked for the Shell Oil Company from 1943 until 1964. On leaving Shell he became a senior research geophysicist for the United States Geological Survey until retiring in 1976. Hubbert was also a professor at Stanford University and at UC Berkeley.

Hubbert is most well-known for his studies on the capacities of oil fields and natural gas reserves. He predicted that, for any given geographical area, the rate of petroleum production over time would resemble a bell curve. At the 1956 meeting of the American Petroleum Institute, Hubbert predicted that United States petroleum production would peak in the late 1960s or early 1970s. He became famous when his prediction came true in 1970.

In 1974, Hubbert projected that global oil production would peak in 1995 "if current trends continue". Various subsequent predictions have been made by others as trends have fluctuated in the intervening years. Hubbert's theory, and its implications for the world economy, remain controversial.

In the news

18 August 2024 – 2024 Lebanese blackout

Ongoing nationwide blackouts in Lebanon caused by fuel shortages provoke significant governmental conflict, with the Minister of Energy blaming the Central Bank for not paying Iraq for fuel imports and the Central Bank blaming Parliament for not authorizing emergency fund transfers for fuel payments. (Asharq Al-Awsat)

17 August 2024 – Russian invasion of Ukraine

The International Atomic Energy Agency declares that the safety of the Zaporizhzhia Nuclear Power Plant is deteriorating, following an investigation into an explosive drone strike that targeted a perimeter access road at the power plant. (Reuters)

31 July 2024 – Lukoil oil transit dispute

Slovak Prime Minister Robert Fico threatens to suspend Slovakia's diesel exports to Ukraine if the Ukrainian government continues to suspend pipeline oil transport from Russian oil company Lukoil, which Slovakia claims is causing a national energy crisis. (The Kyiv Independent)

General images

The following are images from various energy-related articles on Wikipedia.

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  A geothermal power station in Negros Oriental, Philippines (from Geothermal power)
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  The Three Gorges Dam in Central China is the world's largest power-producing facility of any kind. (from Hydroelectricity)
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  The Warwick Castle water-powered generator house, used for the generation of electricity for the castle from 1894 until 1940 (from Hydroelectricity)
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  Utility cycling infrastructure, such as this bike lane in Vancouver, encourages sustainable transport. (from Sustainable energy)
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  Global energy usage is highly unequal. High income countries such as the United States and Canada use 100 times as much energy per capita as some of the least developed countries in Africa. (from Sustainable energy)
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  Natural gas drilling rig in Texas, US (from Natural gas)
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  The status of nuclear power globally (click for legend) (from Nuclear power)
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  Comparison of natural gas prices in Japan, United Kingdom, and United States, 2007–2011 (from Natural gas)
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  US Natural Gas Marketed Production 1900 to 2012 (US EIA data) (from Natural gas)
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  Motor oil (from Oil refinery)
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  The location of shale gas compared to other types of gas deposits (from Natural gas)
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  The oil refinery in Haifa, Israel, is capable of processing about 9 million tons (66 million barrels) of crude oil a year. Its two cooling towers are landmarks of the city's skyline. (from Oil refinery)
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  Passive cooling features, such as these windcatcher towers in Iran, bring cool air into buildings without any use of energy. (from Sustainable energy)
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  Australia (from Solar power)
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  Part of the Senftenberg Solarpark, a solar photovoltaic power plant located on former open-pit mining areas close to the city of Senftenberg, in Eastern Germany. The 78 MW Phase 1 of the plant was completed within three months. (from Solar power)
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  The Ffestiniog Power Station can generate 360 MW of electricity within 60 seconds of the demand arising. (from Hydroelectricity)
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  Example of energy policy decisions: The goal of the Southern Gas Corridor, which connects the giant Shah Deniz gas field in Azerbaijan to Europe, is to reduce Europe's dependency on Russian gas. (from Energy policy)
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  Olkiluoto 3 under construction in 2009. It was the first EPR, a modernized PWR design, to start construction. (from Nuclear power)
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  The guided-missile cruiser USS Monterey (CG 61) receives fuel at sea (FAS) from the Nimitz-class aircraft carrier USS George Washington (CVN 73). (from Nuclear power)
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  A breakdown of the products made from a typical barrel of US oil (from Oil refinery)
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  Refinery of Slovnaft in Bratislava (from Oil refinery)
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  Natural gas processing plant in Aderklaa, Lower Austria (from Natural gas)
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  Baton Rouge Refinery (the fifth-largest in the United States) (from Oil refinery)
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  Grangemouth Refinery, in Scotland (from Oil refinery)
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  Sample of diesel fuel (from Oil refinery)
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  Bloomberg NEF reported that in 2022, global energy transition investment equaled fossil fuels investment for the first time. (from Sustainable energy)
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  The launching ceremony of the USS Nautilus January 1954. In 1958 it would become the first vessel to reach the North Pole. (from Nuclear power)
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  Anti-nuclear protest near nuclear waste disposal centre at Gorleben in northern Germany (from Nuclear power)
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  The multi-mission radioisotope thermoelectric generator (MMRTG), used in several space missions such as the Curiosity Mars rover (from Nuclear power)
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  The warming influence (called radiative forcing) of long-lived greenhouse gases has increased substantially in the last 40 years, with carbon dioxide and methane being the dominant drivers of global warming. (from Natural gas)
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  Life-cycle greenhouse gas emissions of electricity supply technologies, median values calculated by IPCC (from Nuclear power)
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  Burning of natural gas coming out of the ground (from Natural gas)
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  The town of Pripyat abandoned since 1986, with the Chernobyl plant and the Chernobyl New Safe Confinement arch in the distance (from Nuclear power)
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  Russia was a key oil and gas supplier to Europe (map from 2013). This changed with the Russian invasion of Ukraine in 2022. (from Energy policy)
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  Map of solar resources from World bank (from Solar power)
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  Countries by natural gas proven reserves (2014), based on data from The World Factbook (from Natural gas)
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  Clean energy investment has benefited from post-pandemic economic recovery, a global energy crisis involving high fossil fuel prices, and growing policy support across various nations. (from Sustainable energy)
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  Measurement of the tailrace and forebay rates at the Limestone Generating Station in Manitoba, Canada. (from Hydroelectricity)
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  Geothermal power center in the Usulután Department, El Salvador (from Geothermal power)
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  Natural gas extraction by countries in cubic meters per year around 2013 (from Natural gas)
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  Cooling towers at a geothermal power plant in Larderello, Italy
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  A woman in rural Rajasthan, India, collects firewood. The use of wood and other polluting fuels for cooking causes millions of deaths each year from indoor and outdoor air pollution. (from Sustainable energy)
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  Schematic flow diagram of a typical crude oil distillation unit as used in petroleum crude oil refineries (from Oil refinery)
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  The 120-MW_e Nesjavellir power station in southwest Iceland (from Geothermal power)
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  North America (from Solar power)
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  A gas bill from Baltimore, Maryland, 1834, for manufactured coal gas, before the introduction of ground-extracted methane gas. (from Natural gas)
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  Construction close to high pressure gas transmission pipelines is discouraged, often with standing warning signs. (from Natural gas)
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  Following the 2011 Fukushima Daiichi nuclear disaster, the world's worst nuclear accident since 1986, 50,000 households were displaced after radiation leaked into the air, soil and sea. Radiation checks led to bans of some shipments of vegetables and fish. (from Nuclear power)
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  Museum Hydroelectric power plant "Under the Town" in Užice, Serbia, built in 1900. (from Hydroelectricity)
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  The outdoor section of a heat pump. In contrast to oil and gas boilers, they use electricity and are highly efficient. As such, electrification of heating can significantly reduce emissions. (from Sustainable energy)
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  Activity of spent UOx fuel in comparison to the activity of natural uranium ore over time (from Nuclear power)
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  Pile of asphalt-covered aggregate for formation into asphalt concrete (from Oil refinery)
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  Oil refinery in Iran (from Oil refinery)
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  Battery storage facility
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  Several countries and the European Union have committed to dates for all new cars to be zero-emissions vehicles. (from Sustainable energy)
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  A comparison of prices over time for energy from nuclear fission and from other sources. Over the presented time, thousands of wind turbines and similar were built on assembly lines in mass production resulting in an economy of scale. While nuclear remains bespoke, many first of their kind facilities added in the timeframe indicated and none are in serial production.Our World in Data notes that this cost is the global average, while the 2 projects that drove nuclear pricing upwards were in the US. The organization recognises that the median cost of the most exported and produced nuclear energy facility in the 2010s the South Korean APR1400, remained "constant", including in export.
  LCOE is a measure of the average net present cost of electricity generation for a generating plant over its lifetime. As a metric, it remains controversial as the lifespan of units are not independent but manufacturer projections, not a demonstrated longevity. (from Nuclear power)
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  Refinery, Bayport Industrial Complex, Harris County, Texas (from Oil refinery)
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  Thomas Young - the first to use the term "energy" in the modern sense, in 1802. (from History of energy)
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  Cracks at the historic Town Hall of Staufen im Breisgau presumed due to damage from geothermal drilling (from Geothermal power)
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  A parabolic collector concentrates sunlight onto a tube in its focal point. (from Solar power)
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  Anacortes Refinery, on the north end of March Point southeast of Anacortes, Washington, United States (from Oil refinery)
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  The Calder Hall nuclear power station in the United Kingdom, the world's first commercial nuclear power station. (from Nuclear power)
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  Deaths caused by use of fossil fuels such as natural gas (areas of rectangles in chart) greatly exceed those resulting from production of wind energy, nuclear energy or solar energy (rectangles barely visible in chart). (from Natural gas)
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  Fire-extinguishing operations after the Texas City refinery explosion (from Oil refinery)
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  Merowe Dam in Sudan. Hydroelectric power stations that use dams submerge large areas of land due to the requirement of a reservoir. These changes to land color or albedo, alongside certain projects that concurrently submerge rainforests, can in these specific cases result in the global warming impact, or equivalent life-cycle greenhouse gases of hydroelectricity projects, to potentially exceed that of coal power stations. (from Hydroelectricity)
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  Schematic of the ITER tokamak under construction in France (from Nuclear power)
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  Deaths caused as a result of fossil fuel use (areas of rectangles in chart) greatly exceed those resulting from production of sustainable energy (rectangles barely visible in chart). (from Sustainable energy)
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  Peoples Gas Manlove Field natural gas storage area in Newcomb Township, Champaign County, Illinois. In the foreground (left) is one of the numerous wells for the underground storage area, with an LNG plant, and above-ground storage tanks are in the background (right). (from Natural gas)
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  Proportions of the isotopes uranium-238 (blue) and uranium-235 (red) found in natural uranium and in enriched uranium for different applications. Light water reactors use 3–5% enriched uranium, while CANDU reactors work with natural uranium. (from Nuclear power)
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  Crude oil is separated into fractions by fractional distillation. The fractions at the top of the fractionating column have lower boiling points than the fractions at the bottom. The heavy bottom fractions are often cracked into lighter, more useful products. All of the fractions are processed further in other refining units. (from Oil refinery)
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  Sample of crude oil (petroleum) (from Oil refinery)
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  Cylinders of liquified petroleum gas (from Oil refinery)
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  Buildings in the Solar Settlement at Schlierberg, Germany, produce more energy than they consume. They incorporate rooftop solar panels and are built for maximum energy efficiency. (from Sustainable energy)
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  The first light bulbs ever lit by electricity generated by nuclear power at EBR-1 at Argonne National Laboratory-West, December 20, 1951. (from Nuclear power)
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  Yearly solar generation by continent (from Solar power)
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  Share of electricity production from nuclear, 2022 (from Nuclear power)
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  A photovoltaic power station in California, United States
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  Gas network emergency vehicle responding to a major fire in Kyiv, Ukraine (from Natural gas)
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  Geothermal generation by country, 2021 (from Geothermal power)
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  The share of electricity production from solar, 2022 (from Solar power)
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  Storage tanks and towers at Shell Puget Sound Refinery (Shell Oil Company), Anacortes, Washington (from Oil refinery)
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  The nuclear fuel cycle begins when uranium is mined, enriched, and manufactured into nuclear fuel (1), which is delivered to a nuclear power plant. After use, the spent fuel is delivered to a reprocessing plant (2) or to a final repository (3). In nuclear reprocessing, 95% of spent fuel can potentially be recycled to be returned to use in a power plant (4). (from Nuclear power)
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  Global geothermal electric capacity. Upper red line is installed capacity; lower green line is realized production. (from Geothermal power)
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  Hydro generation by country, 2021 (from Hydroelectricity)
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  The Ikata Nuclear Power Plant, a pressurized water reactor that cools by using a secondary coolant heat exchanger with a large body of water, an alternative cooling approach to large cooling towers (from Nuclear power)
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  Kenyan dairy farmer lighting a biogas lamp. Biogas produced from biomass is a renewable energy source that can be burned for cooking or light. (from Sustainable energy)
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  Most waste packaging, small-scale experimental fuel recycling chemistry and radiopharmaceutical refinement is conducted within remote-handled hot cells. (from Nuclear power)
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  Acceptance of wind and solar facilities in one's community is stronger among U.S. Democrats (blue), while acceptance of nuclear power plants is stronger among U.S. Republicans (red). (from Solar power)
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  The Hoover Dam in the United States is a large conventional dammed-hydro facility, with an installed capacity of 2,080 MW. (from Hydroelectricity)
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  Yearly hydro generation by continent (from Hydroelectricity)
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  South and South-East Asia (from Solar power)
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  Trends in the top five natural gas-producing countries (US EIA data) (from Natural gas)
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  Jamnagar Refinery, the world's largest oil refinery, in Gujarat, India (from Oil refinery)
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  Electricity production by source (from Solar power)
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  Dry cask storage vessels storing spent nuclear fuel assemblies (from Nuclear power)
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  Manhole for domestic gas supply, London, UK (from Natural gas)
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  Actual annual deployments of solar PV vs predictions by the IEA for the period 2002–2016. Predictions have largely and consistently underestimated actual growth. (from Solar power)
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  Installed geothermal energy capacity, 2022 (from Geothermal power)
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  Growth of worldwide nuclear power generation (from Nuclear power)
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  Yearly geothermal generation by continent (from Geothermal power)
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  Schematics of a grid-connected residential PV power system (from Solar power)
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  Wind turbines in Xinjiang, China
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  The Leibstadt Nuclear Power Plant in Switzerland (from Nuclear power)
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  Trends in the top five geothermal electricity-generating countries, 1980–2012 (US EIA) (from Geothermal power)
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  Sample of kerosene (from Oil refinery)
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  Ivanpah Solar Electric Generating System with all three towers under load (from Solar power)
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  Schematic flow diagram of a typical natural gas processing plant (from Natural gas)
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  World map showing where people without access to electricity lived in 2016⁠—mainly in sub-Saharan Africa and the Indian subcontinent (from Sustainable energy)
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  Typical composition of uranium dioxide fuel before and after approximately three years in the once-through nuclear fuel cycle of a LWR (from Nuclear power)
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  Nuclear fuel assemblies being inspected before entering a pressurized water reactor in the United States (from Nuclear power)
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  Community solar farm in the town of Wheatland, Wisconsin (from Solar power)
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  Pico hydroelectricity in Mondulkiri, Cambodia (from Hydroelectricity)
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  Guri Dam, a hydroelectric dam in Venezuela (from Sustainable energy)
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  A Washington, D.C. Metrobus, which runs on natural gas (from Natural gas)
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  Neste Oil refinery in Porvoo, Finland (from Oil refinery)
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  A micro-hydro facility in Vietnam (from Hydroelectricity)
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  Europe (from Solar power)
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  Sulphur (from Oil refinery)
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  The growth of solar PV on a semi-log scale since 1996 (from Solar power)
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  Sample of gasoline (from Oil refinery)
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  Share of electricity production from hydropower, 2022 (from Hydroelectricity)
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  A pipeline odorant injection station (from Natural gas)
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  Net metering, unlike a feed-in tariff, requires only one meter, but it must be bi-directional. (from Solar power)
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  South America (from Solar power)
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  A sugarcane plantation to produce ethanol in Brazil (from Sustainable energy)
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  For cooking, electric induction stoves are one of the most energy-efficient and safest options. (from Sustainable energy)
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  Since 1985, the proportion of electricity generated from low-carbon sources has increased only slightly. Advances in deploying renewables have been mostly offset by declining shares of nuclear power. (from Sustainable energy)
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  Benefitting from favorable policies and declining costs of modules, photovoltaic solar installation has grown consistently. In 2023, China added 60% of the world's new capacity. (from Solar power)
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  Electrified transport and renewable energy are key areas of investment for the renewable energy transition. (from Sustainable energy)
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  Polyethylene plastic main being placed in a trench (from Natural gas)
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  Greenhouse gas emissions per energy source. Solar power is one of the sources with the least greenhouse gas emissions. (from Solar power)
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  Enhanced geothermal system 1:Reservoir 2:Pump house 3:Heat exchanger 4:Turbine hall 5:Production well 6:Injection well 7:Hot water to district heating 8:Porous sediments 9:Observation well 10:Crystalline bedrock (from Geothermal power)
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  Part of the 354 MW Solar Energy Generating Systems (SEGS) parabolic trough solar complex in northern San Bernardino County, California (from Solar power)
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  United States and USSR/Russian nuclear weapons stockpiles, 1945–2006. The Megatons to Megawatts Program was the main driving force behind the sharp reduction in the quantity of nuclear weapons worldwide since the cold war ended. (from Nuclear power)
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  Seasonal cycle of capacity factors for wind and photovoltaics in Europe shown under idealized assumptions. The figure illustrates the balancing effects of wind and solar energy at the seasonal scale (Kaspar et al., 2019). (from Solar power)
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  Africa and Middle East (from Solar power)
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  Natural gas burning on a gas stove (from Natural gas)
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  Reactor decay heat as a fraction of full power after the reactor shutdown, using two different correlations. To remove the decay heat, reactors need cooling after the shutdown of the fission reactions. A loss of the ability to remove decay heat caused the Fukushima accident. (from Nuclear power)
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  Nuclear waste flasks generated by the United States during the Cold War are stored underground at the Waste Isolation Pilot Plant (WIPP) in New Mexico. The facility is seen as a potential demonstration for storing spent fuel from civilian reactors. (from Nuclear power)
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  Death rates from air pollution and accidents related to energy production, measured in deaths in the past per terawatt hours (TWh) (from Nuclear power)

Quotations

• "The world's second-largest emitter of greenhouse gases is China. Yet, China was entirely exempted from the requirements of the Kyoto Protocol. India and Germany are among the top emitters. Yet, India was also exempt from Kyoto." – George W. Bush, 2001
• "The newly industrialized States cannot, for example, be asked to apply restrictive environmental standards to their emerging industries unless the industrialized States first apply them within their own boundaries." – Pope John Paul II, 1990
• "We should work together to make sure the international community upholds the goals and framework established in the United Nations Framework Convention on Climate Change and its Kyoto Protocol and the principle of common but differentiated responsibilities." – Hu Jintao, 2007

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• WikiProject Environment
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