Electrical Grids


An electrical grid is an interconnected network for delivering electricity from suppliers to consumers.

Electricity is the set of physical phenomena associated with the presence and flow of electric charge.

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It consists of generating stations that produce electrical power, high-voltage transmission lines that carry power from distant sources to demand centers, and distribution lines that connect individual customers.

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Power stations may be located near a fuel source, at a dam site, or to take advantage of renewable energy sources, and are often located away from heavily populated areas.

Renewable energy is generally defined as energy that is collected from resources which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.

A power station, also referred to as a generating station, power plant, powerhouse, or generating plant, is an industrial facility for the generation of electric power.


They are usually quite large to take advantage of the economies of scale.

In microeconomics, economies of scale are the cost advantages that enterprises obtain due to size, output, or scale of operation, with cost per unit of output generally decreasing with increasing scale as fixed costs are spread out over more units of output.


The electric power which is generated is stepped up to a higher voltage at which it connects to the electric power transmission network.


The bulk power transmission network will move the power long distances, sometimes across international boundaries, until it reaches its wholesale customer.


On arrival at a substation, the power will be stepped down from a transmission level voltage to a distribution level voltage.


As it exits the substation, it enters the distribution wiring.


Finally, upon arrival at the service location, the power is stepped down again from the distribution voltage to the required service voltage.

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