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List of energy topics

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This is a list of energy topics which identifies articles and categories that relate to energy in general. Energy refers to "the ability to do work". The word is used in several different contexts. The engineering use has a precise, well-defined meaning, whilst many non-technical uses often do not. In science and physics, it's an attribute of a physical system that is related to work, force and matter.

Energy infrastructure

See especially Category:Electric power and Category:Fuels for a large number of conventional energy related topics.

Energy applications

General energy topics

Energy
Activation energy explains the differences in the speeds of various chemical reactions
Bioenergetics
Chemical energetics
Energy in physical cosmology
Energy in Earth science that is responsible for the macroscpic transformations on the planet Earth
Electricity
Exergy
Green energy
Orders of magnitude (energy) - list describes various energy levels between 10⁻³¹ joules and 10⁷⁰ joules
Thermodynamics
Perpetual motion
Heat
History of energy
Energy forms, the forms in which energy can be defined
Energy transformation, relating to energy's changes from one form to another.
Energy (signal processing), the inner product of a signal in the time domain
Potential energy, the form of energy that is due to position of an object
Kinetic energy, the form of energy as a consequence of the motion of an object or its constituents
Mechanical energy, the potential energy and kinetic energy present in the components of a mechanical system.
Binding energy, a concept explaining how the constituents of atoms or molecules are bound together
Bond energy, a measure of the strength of a chemical bond
Blue energy, energy retrieved from the difference in the salt concentration between seawater and river water
Nuclear energy, energy that is the consequence of decomposition or combination of atomic nuclei
Gibbs free energy, a related concept in chemical thermodynamics that incorporates entropy considerations too
Helmholtz free energy, a thermodynamic potential that measures the "useful" work obtainable from a closed thermodynamic system at a constant temperature, useful for studying explosive chemical reactions
Elastic energy, which causes or is released by the elastic distortion of a solid or a fluid
Ionization energy - the (IE) of an atom is the energy required to strip it of an electron.
Interaction energy, the contribution to the total energy that is a result of interaction between the objects being considered
Internal energy - (abbreviated E or U) the total kinetic energy due to the motion of molecules (translational, rotational, vibrational) and the total potential energy associated with the vibrational and electric energy of atoms within molecules.
Negative energy
Energy conversion - process of converting energy from one form to another
Dark energy, used to explain some cosmological phenomena
Energy quality, empirical experience of the characteristics of different energy forms as they flow and transform
Energy density, amount of energy stored in a given system or region of space per unit volume, or per unit mass
Energy flow, flow of energy in an ecosystem through food chains
Energetics, the scientific study of energy flows under transformation
Stress-energy tensor, the density and flux of energy and momentum in space-time; the source of the gravitational field in general relativity
Food energy, energy in food that is available
Primary energy - Energy contained in raw fuels and any other forms of energy received by a system as input to the system.
Radiant energy - energy that is transported by waves
Rotational energy - An object's rotational energy or angular kinetic energy is part of its total kinetic energy
Solar radiation - radiant energy emitted by the sun, particularly electromagnetic energy
List of large wind farms
List of notable renewable energy organizations
List of photovoltaics companies
List of renewable energy magazines
List of renewable energy topics by country
List of solar thermal power stations
List of wind turbine manufacturers

Energy technology inventors

Alessandro Volta
Charles Kettering
Farrington Daniels - solar energy
Georges Leclanché - battery
John Frederic Daniell -
Rudolf Diesel -compression ignition internal combustion engine
Georges Imbert - Wood gas
Leonardo da Vinci
Moritz von Jacobi
Nikolaus Otto - internal combustion engine
Viktor Schauberger - Implosion
Robert Stirling - Stirling engine (external combustion)
Nikola Tesla
James Watt - steam engine with separate condensor

Energy and society

Energy (Society), applications and energy related activities in society
World energy resources and consumption
List of energy resources, substances like fuels, petroleum products and electricity
Energy crisis, the need to conserve energy resources
Energy development, development of energy resources
Future energy development
Embodied energy, the sum total of energy expended to deliver a good or service as it travels through the economy
Energy conservation, tips for conserving energy resources
Energy economics, as the foundation of other relationships
Energy industry, that supplies of fuel for consumers
Energy policy, government policies and plans for energy supply
Energy storage, methods commonly used to store energy resources for later use
Biosphere
Ecology
Energy balance
Energy conservation - includes tips for consumers
Earth Day
Energy development - Ongoing effort to provide abundant and accessible energy, through knowledge, skills and constructions.
Free energy suppression
Future energy development - Provides a general overview of future energy development.
History of perpetual motion machines
Hubbert peak theory, also known as peak oil - the theory that world oil production will peak (or has peaked), and will then rapidly decline, with a corresponding rapid increase in prices.\
Power harvesting
Renewable energy development

Issues

Environmental concerns with electricity generation
Soft energy path - an energy use and development strategy delineated and promoted by some energy experts and activists
Fuel poverty
Peak Oil
Low-carbon economy
2000 Watt society

Energy Policies and Use - National and International

International

Energy policy - Introductory article
Energy and Environmental Security Initiative (EESI)

Regional and national

main article: Energy policy by country

Energy Tax Act - United States energy-related legislation. See also : Category:United States federal energy legislation
Proposed oil phase-out in Sweden
United Kingdom:
- Energy policy of the United Kingdom
- Energy use and conservation in the United Kingdom

Energy unit terms

Barrel of oil equivalent
British thermal unit
Calorie
Units of energy, joules, ergs, calories, etc.
Current solar income - the amount of solar energy that falls as sunlight
Direct current
Electronvolt - (symbol: eV) is the amount of energy gained by a single unbound electron when it falls through an electrostatic potential difference of one volt
Planck energy, 1.22 × 10¹⁹ GeV (billion electron volts)
Enthalpy
Erg - (symbol "erg") unit of energy and mechanical work in the centimetre-gram-second (CGS) system of units
EU energy label
Fill factor - defined as the ratio of the maximum power (Vmp x Jmp) divided by the short-circuit current (Isc) and open-circuit voltage (Voc) in light current density - voltage (J-V) characteristics of solar cells.
Foot-pound - (symbol ft·lbf or ft·lbf) is an Imperial and U.S. customary unit of mechanical work, or energy, although in scientific fields one commonly uses the equivalent metric unit of the joule (J). There are approximately 1.356 J/(ft·lb_f).
Francis turbine the most common water turbine in use today
Gigaton - Metric Unit of mass, equal to 1,000,000,000 (1 billion) metric tons, 1,000,000,000,000 (1 trillion) kilograms
- Any of various units of energy, such as gigatons of TNT equivalent, gigatons of coal equivalent, gigatons petroleum equivalent.
Gray (unit) - (symbol: Gy), is the SI unit of energy for the absorbed dose of radiation. One gray is the absorption of one joule of radiation energy by one kilogram of matter. One gray equals 100 rad, an older unit.
Heat
Joule - (symbol J, also called newton meter, watt second, or coulomb volt)
Kilowatt-hour - (symbol: kW·h) corresponds to one kilowatt (kW) of power being used over a period of one hour.
Kinetic energy
Mass driver
Mass-energy equivalence - where mass has an energy equivalence, and energy has a mass equivalence
Megawatt
Net energy gain
Photoelectric effect
Power beaming - Moving energy from one place to another through "empty space" (or air)
Power factor - of an AC electric power system is defined as the ratio of the real power to the apparent power.
Therm - (symbol thm) a non-SI unit of heat energy. It is approximately the heat equivalent of burning 100 cubic feet of natural gas. In the US gas industry it is defined as exactly 100,000 BTU_59°F or 105.4804 megajoules.
Ton of oil equivalent
TPE - Ton Petroleum Equivalent, 45.217 GJ, see ton of oil equivalent

Psychology and spirituality

Energy (spirituality), invoked by spiritualists for alternative modes of healing the human body
Energy (psychological), a psychological term used to describe the states of human mind
Vitalism, often referred to as "energy"

Energy companies

Exxon Mobil
Enercon GmbH - Company based in Germany that operates in the wind turbine industry. One of the biggest producers in the world.
Saudi Aramco
Sasol
United States Enrichment Corporation - contracts with the United States Department of Energy to produce enriched uranium.

List of energy topics

Contents

Energy infrastructure

Energy applications

General energy topics

Energy technology inventors

Energy and society

Issues

Energy Policies and Use - National and International

International

Regional and national

Energy unit terms

Psychology and spirituality

Energy companies

Non-profit organizations

Industry associations

Media

Books

News

Energy-Related Categories

By country

See also