Portal:Energy

Introduction

The Sun is the source of energy for most of life on Earth. As a star, the Sun is heated to high temperatures by the conversion of nuclear binding energy due to the fusion of hydrogen in its core. This energy is ultimately transferred (released) into space mainly in the form of radiant (light) energy.

In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. 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 SI unit of energy is the joule, which is the energy transferred to an object by the work of moving it a distance of 1 metre against a force of 1 newton.

Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object's position in a force field (gravitational, electric or magnetic), the elastic energy stored by stretching solid objects, the chemical energy released when a fuel burns, the radiant energy carried by light, and the thermal energy due to an object's temperature.

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In the news

1 February 2019 – January 2019 North American cold wave
A large-scale natural gas shortage in the U.S. state of Michigan is averted following the compliance of an emergency request from Consumers Energy for state residents to lower thermostats, after a fire at a natural gas compressor station threatened to halt the delivery of gas to consumers. The public's observance of the request resulted in a 10 percent decrease in natural gas usage across the state. (WNEM-TV) (Associated Press)
30 January 2019 – January 2019 North American cold wave
After a fire at a Consumers Energy natural gas compressor station, Michigan residents are asked to turn down their heat to conserve natural gas. (MLive.com), (WEYI-TV)

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