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The Energy Portal Welcome to Misplaced Pages's Energy portal, your gateway to energy. This portal is aimed at giving you access to all energy related topics in all of its forms.
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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. The unit of measurement for energy in the International System of Units (SI) is the joule (J).

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, the internal energy contained within a thermodynamic system, and rest energy associated with an object's rest mass. These are not mutually exclusive.

All living organisms constantly take in and release energy. The Earth's climate and ecosystems processes are driven primarily by radiant energy from the sun. The energy industry provides the energy required for human civilization to function, which it obtains from energy resources such as fossil fuels, nuclear fuel, and renewable energy. (Full article...)

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Nuclear testing, uranium mining and export, and nuclear energy have often been the subject of public debate in Australia, and the anti-nuclear movement in Australia has a long history. Its origins date back to the 1972–73 debate over French nuclear testing in the Pacific and the 1976–77 debate about uranium mining in Australia.

Several groups specifically concerned with nuclear issues were established in the mid-1970s, including the Movement Against Uranium Mining and Campaign Against Nuclear Energy (CANE), cooperating with other environmental groups such as Friends of the Earth and the Australian Conservation Foundation. But by the late 1980s, the price of uranium had fallen, and the costs of nuclear power had risen, and the anti-nuclear movement seemed to have won its case. CANE disbanded itself in 1988.

As of 2010, Australia has no nuclear power stations and the current Gillard Labor government is opposed to nuclear power for Australia. Australia has three operating uranium mines at Olympic Dam (Roxby) and Beverley - both in South Australia's north - and at Ranger in the Northern Territory. As of April 2009, construction has begun on South Australia's third uranium mine—the Honeymoon Uranium Mine.

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Photo credit: From an image by Wolfgang Beyer
Strombolian volcanic eruptions can eject incandescent cinder, lapilli and lava bombs to altitudes of tens to hundreds of meters.

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Did you know?

  • Golar Spirit (pictured) is the world's first floating storage and regasification vessel converted from a LNG carrier?
  • The scientific-technical journal Oil Shale is the only journal in the world that focuses on oil shale as a main subject?
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Selected biography

{{{caption}}} James Clerk Maxwell (13 June 1831 – 5 November 1879) was a Scottish mathematician and theoretical physicist. His most significant achievement was formulating a set of equations – eponymously named Maxwell's equations – that for the first time expressed the basic laws of electricity and magnetism in a unified fashion. Maxwell's contributions to physics are considered by many to be of the same magnitude as those of Isaac Newton and Albert Einstein.

Maxwell studied natural philosophy, moral philosophy, and mental philosophy at the University of Edinburgh, before graduating in mathematics at the University of Cambridge, where he would conduct much of his career. He built on Michael Faraday's work on magnetic induction, using elements of geometry and algebra to demonstrate that electric and magnetic fields travel through space, in the form of waves, and at the constant speed of light. Finally, in 1861, Maxwell proposed that light consisted of undulations in the same medium that is the cause of electric and magnetic phenomena. In the same year he was elected to the Royal Society.

In 1864, Maxwell presented what are now known as Maxwell's equations to the Royal Society. These collectively describe the behaviour of both the electric and magnetic fields, as well as their interactions with matter.

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In the news

19 January 2025 –
The Washington Post reports that there is an "emerging consensus" among U.S. and European intelligence officials that maritime accidents, rather than Russian sabotage, was the cause of damage to Baltic seabed energy and communications lines. (Washington Post)
17 January 2025 – Iran–Russia relations
Iranian president Masoud Pezeshkian and Russian president Vladimir Putin sign the Iranian–Russian Treaty on Comprehensive Strategic Partnership. The 20-year deal will see cooperation between the two countries in multiple areas, including nuclear energy, counterterrorism, and environmental issues. (Middle East Eye)
15 January 2025 – Russian invasion of Ukraine
Russia launches a major ballistic and cruise missile attack on regions across Ukraine, targeting energy production and compelling authorities to shut down the power grid. (AP)
14 January 2025 – 2024 Baltic Sea submarine cable disruptions, NATO operations
At the Summit of Baltic Sea Allies in Helsinki, Finland, NATO Secretary General Mark Rutte announces the establishment of the Baltic Sentry military mission, which will strengthen the protection of critical infrastructure in the region, such as energy and communication cables, from "destabilizing acts". (NATO News)
10 January 2025 – 2025 Moldovan energy crisis
Moldova's unrecognized breakaway region of Transnistria extends its state of emergency for another month due to an energy crisis following the suspension of Russian gas supplies. (Reuters)

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Major topics

Fossil fuels
Coal
Coal mining
Anthracite
Lignite
Coal fired power plant
Clean coal technology
Coal gas

Petroleum
Gasoline (petrol)
Diesel
Fuel oil
Liquefied petroleum gas
Oil reserves
Peak Oil
Hubbert peak theory
Petroleum industry
Oil platform
Oil refinery
Oil tanker
Pipeline transport
Filling station
Oil prices
Petroleum politics
Petro-aggression
Non-conventional oil
Oil shale
Tar sands

Natural Gas
Gas turbine
Liquefied natural gas
Natural gas prices

Environmental impacts
Global warming
Carbon footprint
Greenhouse effect
Greenhouse gas
Sea level rise
Ocean acidification
Flue gas emissions


Renewable energy
Solar power
Photovoltaic electricity
Solar panel
Solar hot water
Solar central heating
Solar thermal collector
Active solar
Passive solar
Solar thermal energy

Biofuels
Biomass
Biogas
Wood gas
Bioethanol
Biomethanol
BioDME
Biodiesel
Vegetable oil fuel

Hydropower
Hydroelectricity
Small hydro
Tidal power
Wave power
Water turbine
Deep lake water cooling
Ocean Thermal Energy Conversion

Wind power
Wind turbine
Wind farm

Geothermal power
Hot dry rock (EGS)
Geothermal heat pump
Earth warming tubes


Nuclear energy
Nuclear power
Nuclear power station
Nuclear reactor
AGR
BWR
CANDU
PWR
RBMK
Nuclear fuel
Uranium mining
Nuclear chain reaction
Nuclear reprocessing
Nuclear waste
Nuclear accidents
Nuclear decommissioning
Nuclear proliferation
Nuclear energy policy
Nuclear power debate

Radioactivity
Irradiation
Radioactive contamination

Fusion power
Inertial fusion power plant
Tokamak
Joint european torus
ITER
Cold fusion
Polywell

Energy conservation
Low energy building
Zero energy building
Passive house
Passive solar building
Superinsulation
Heat recovery ventilation
Building automation
Over illumination
Low energy lighting

Transport
Telecommuting
Public transport
Ride sharing
Electric vehicle
Hybrid vehicle
Regenerative brake
Flexible-fuel vehicle
Fuel economy

Business
Action on global warming
Carbon emissions trading

Society
2000 Watt society
Low-carbon economy
Hydrogen economy
Carbon tax
Carbon offset
Oil phase out in Sweden


Politics and Economics
Issues
World resources & consumption
World carbon emissions
Climate change action
Kyoto Protocol
Industrialisation
Energy economics
Petroleum politics
Anti-nuclear movement
Fuel poverty
Energy security
Energy superpowers
Energy policy
Renewable energy commercialization

Organizations
IPCC
International Energy Agency
Nuclear Energy Agency
International Atomic Energy Agency
Renewables Policy Network
OPEC
Gas Exporting Countries Forum
AP6
Global Wind Energy Council
World Business Council for Sustainable Development
International Solar Energy Society

Accounting
EROEI
Embodied energy
Energy quality
Environmental Accounting
Energy analysis
Energy cannibalism
Life cycle analysis
Energy balance
Net energy gain
Emergy


Energy in science
Science
Thermodynamics
Heat transfer
Thermal energy
Chemical energy
Electrical energy
Radiant energy
Nuclear energy
Photon
2020s in sustainable energy research

Physics
Laws of thermodynamics
Kinetic energy
Potential energy
Conservation of energy
Mechanical work
Electromagnetism
Quanta
E=mc

Chemistry
Chemical thermodynamics

Biology
Biological thermodynamics

Geology
Geothermal energy

Cosmology
Dark energy

Electrical power industry
Electricity generation
Power station
Cogeneration
Distributed generation
Microgeneration
Grid energy storage

Electricity distribution
Electricity market
Electric power transmission
Electrical substation
Transformer
Electricity meter
Energy demand management
Intermittent power sources
Electric utility
Grid (electricity)


Energy storage and conversion
Energy storage
Battery
Flow battery
Hydrogen
Ammonia (NH3)
Compressed air energy storage
Thermal energy storage
Hydroelectric energy storage
Flywheel energy storage



Energy conversion
Electric motor
Fuel cell
Internal combustion engine
Jet engine
Maglev propulsion
Rocket engine
Sails
Solar cell
Steam engine
Generator
Turbine



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Major categories

National energy supply, use & conservation

Energy by country

National electricity sector

Electric power by country

Politics, economics, environment

Climate change
Energy conservation
Energy economics
Energy crises
Energy development
Energy policy
Peak oil

Energy sources

Fuels
Biofuels
Fossil fuels
Fusion power
Nuclear technology
Renewable energy
Energy conversion
Electric power
Energy storage

Energy-related design

Electric vehicles
Hybrid vehicles
Low-energy building
Solar design

Scientific usage

Heat transfer
Thermodynamics
Units of energy
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