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  2. Hydropower - Wikipedia

    en.wikipedia.org/wiki/Hydropower

    Hydropower is now used principally for hydroelectric power generation, and is also applied as one half of an energy storage system known as pumped-storage hydroelectricity. Hydropower is an attractive alternative to fossil fuels as it does not directly produce carbon dioxide or other atmospheric pollutants and it provides a relatively ...

  3. Pumped-storage hydroelectricity - Wikipedia

    en.wikipedia.org/wiki/Pumped-storage...

    Pumped-storage hydroelectricity (PSH), or pumped hydroelectric energy storage (PHES), is a type of hydroelectric energy storage used by electric power systems for load balancing. A PSH system stores energy in the form of gravitational potential energy of water, pumped from a lower elevation reservoir to a higher elevation. Low-cost surplus off ...

  4. Run-of-the-river hydroelectricity - Wikipedia

    en.wikipedia.org/wiki/Run-of-the-river...

    There are also small and somewhat-mobile forms of a run-of-the-river power plants. One example is the so-called electricity buoy, a small floating hydroelectric power plant. Like most buoys, it is anchored to the ground, in this case in a river. The energy within the moving water propels a power generator and thereby

  5. Hydroelectricity - Wikipedia

    en.wikipedia.org/wiki/Hydroelectricity

    The first Edison hydroelectric power station, the Vulcan Street Plant, began operating September 30, 1882, in Appleton, Wisconsin, with an output of about 12.5 kilowatts. [16] By 1886 there were 45 hydroelectric power stations in the United States and Canada; and by 1889 there were 200 in the United States alone. [13]

  6. Power plant efficiency - Wikipedia

    en.wikipedia.org/wiki/Power_plant_efficiency

    The higher the heat rate (i.e. the more energy input that is required to produce one unit of electric output), the lower the efficiency of the power plant. The U.S. Energy Information Administration gives a general explanation for how to translate a heat rate value into a power plant's efficiency value. [4] Most power plants have a target or ...

  7. Turlough Hill Power Station - Wikipedia

    en.wikipedia.org/wiki/Turlough_Hill_Power_Station

    The Turlough Hill Power Station is a pumped storage power station in Ireland, owned and operated by the Electricity Supply Board (ESB). [2]Like all pumped-storage hydroelectric schemes, it makes use of two water reservoirs connected by a pressure tunnel: in this case an artificial reservoir near the summit of the mountain and the naturally occurring corrie lake, Lough Nahanagan, at the foot of ...

  8. Francis turbine - Wikipedia

    en.wikipedia.org/wiki/Francis_turbine

    Nineteenth-century efficiency improvements of water turbines allowed them to replace nearly all water wheel applications and compete with steam engines wherever water power was available. After electric generators were developed in the late 1800s, turbines were a natural source of generator power where potential hydropower sources existed.

  9. Energy conversion efficiency - Wikipedia

    en.wikipedia.org/wiki/Energy_conversion_efficiency

    Energy conversion efficiency (η) is the ratio between the useful output of an energy conversion machine and the input, in energy terms. The input, as well as the useful output may be chemical , electric power , mechanical work , light (radiation), or heat .

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