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Portal:Energy

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The Energy Portal
Welcome to Wikipedia'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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Photovoltaics (PV) is a method of generating electrical power by converting solar radiation into direct current electricity using semiconductors that exhibit the photovoltaic effect. Photovoltaic power generation employs solar panels composed of a number of cells containing a photovoltaic material. Due to the growing demand for renewable energy sources, the manufacturing of solar cells and photovoltaic arrays has advanced considerably in recent years.

Solar photovoltaics is growing rapidly, albeit from a small base, to a total global capacity of 40,000 MW at the end of 2010. More than 100 countries use solar PV. Installations may be ground-mounted (and sometimes integrated with farming and grazing) or built into the roof or walls of a building (building-integrated photovoltaics).

Driven by advances in technology and increases in manufacturing scale and sophistication, the cost of photovoltaics has declined steadily since the first solar cells were manufactured. Net metering and financial incentives, such as preferential feed-in tariffs for solar-generated electricity, have supported solar PV installations in many countries.

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Did you know?

An incandescent light bulb
An incandescent light bulb
  • Saudi Aramco is the largest oil corporation in the world and the world's largest in terms of proven crude oil reserves and production?

Selected biography

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John Davison Rockefeller, Sr. (July 8, 1839 – May 23, 1937) was a controversial American industrialist who revolutionized the oil industry and defined the structure of modern philanthropy. He is often regarded as the richest person in history.

Rockefeller founded the Standard Oil Company in 1870 and ran it until he retired in the late 1890s. He continued to retain his stock and his title as president until 1911, when the company was broken up for carrying out illegal monopoly practices. The new companies formed included the predecessors of Conoco, Amoco, Chevron, Esso, Mobil and Sohio. Rockefeller, who had rarely sold shares, owned stock in all of them. As gasoline had grown in importance his wealth had soared and he became the world's richest man and the first billionaire.

Rockefeller's fortune was used to create the modern systematic approach of targeted philanthropy with foundations that had a major impact on medicine, education, and scientific research. His foundations pioneered the development of medical research, and was instrumental in the eradication of hookworm and yellow fever. At his death, at the age of 98, Rockefeller's remaining fortune was estimated at $1.4 billion. As a percentage of the United States economy, no other American fortune has ever come close.

In the news

19 March 2025 – Russian invasion of Ukraine
The Russian Ministry of Defense says Ukraine violated the energy infrastructure ceasefire reached by presidents Donald Trump and Vladimir Putin by launching a drone attack on an oil depot in Krasnodar Krai. (The Moscow Times)
19 March 2025 – Dakota Access Pipeline protests
A jury in North Dakota, United States, orders Greenpeace to pay at least $660 million to Energy Transfer Partners, the company responsible for the Dakota Access Pipeline, after ETP sued the organization for holding protests near Standing Rock Reservation concerning the violation of indigenous sovereignty of Native Americans. (DW) (The Guardian)
18 March 2025 – February 2025 Putin–Trump call
U.S. President Donald Trump and Russian President Vladimir Putin agree to an immediate energy infrastructure ceasefire in Ukraine during a phone call, with additional negotiations to begin immediately on a permanent settlement of the conflict. Putin stated that the end of all foreign military and intelligence support to Ukraine would be one condition of such a settlement. (ABC News)
17 March 2025 – Russian invasion of Ukraine
A drone strike in Astrakhan Oblast, Russia, injures one person and causes a fire at an energy facility, according to Astrakhan Oblast governor Igor Babushkin. (Reuters)
13 March 2025 – 2025 United States federal mass layoffs
U.S. District Judge William Alsup of the Northern District of California orders the U.S. departments of agriculture, energy, interior, veterans affairs, and the Treasury to reinstate probationary workers who were fired by the Office of Personnel Management. (Reuters)

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