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Hydroelectric power station at, A power station, also referred to as a power plant or powerhouse and sometimes generating station or generating plant, is an industrial facility for the of. Most power stations contain one or more, a rotating machine that converts into. The between a and a creates an.

The energy source harnessed to turn the generator varies widely. Most power stations in the world burn such as,, and to generate electricity. Others use, but there is an increasing use of cleaner such as,,.

Contents • • • • • • • • • • • • • • • • • • • • • • History [ ] In 1878 a hydroelectric power station was designed and built by at,. It used water from lakes on his estate to power. The electricity supplied power to lights, heating, produced hot water, ran an elevator as well as labor-saving devices and farm buildings. In the early 1870s Belgian inventor invented a generator powerful enough to produce power on a commercial scale for industry. In the autumn of 1882, a central station providing public power was built in, England. It was proposed after the town failed to reach an agreement on the rate charged by the gas company, so the town council decided to use electricity. It used hydroelectric power for street lighting and household lighting.

The system was not a commercial success and the town reverted to gas. In 1882 the world's first coal-fired public power station, the, was built in London, a project of organized. A boiler powered a 125-horsepower steam engine that drove a 27-ton generator. This supplied electricity to premises in the area that could be reached through the of the viaduct without digging up the road, which was the monopoly of the gas companies. The customers included the and the.

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Another important customer was the Telegraph Office of the, but this could not be reached though the culverts. Johnson arranged for the supply cable to be run overhead, via Holborn Tavern. In September 1882 in New York, the was established by Edison to provide electric lighting in the lower Manhattan Island area.

The station ran until destroyed by fire in 1890. The station used reciprocating to turn direct-current generators. Because of the DC distribution, the service area was small, limited by voltage drop in the feeders. In 1886 began building an alternating current system that used a transformer to step up voltage for long-distance transmission and then stepped it back down for indoor lighting, a more efficient and less expensive system which is similar to modern system.

The eventually resolved in favor of AC distribution and utilization, although some DC systems persisted to the end of the 20th century. DC systems with a service radius of a mile (kilometer) or so were necessarily smaller, less efficient of fuel consumption, and more labor-intensive to operate than much larger central AC generating stations. AC systems used a wide range of depending on the type of load; lighting load using higher frequencies, and traction systems and heavy motor load systems preferring lower frequencies. The economics of central station generation improved greatly when unified light and power systems, operating at a common frequency, were developed. The same generating plant that fed large industrial loads during the day, could feed commuter railway systems during rush hour and then serve lighting load in the evening, thus improving the system and reducing the cost of electrical energy overall.