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  2. 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.

  3. Hydroelectricity - Wikipedia

    en.wikipedia.org/wiki/Hydroelectricity

    Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies 15% of the world's electricity , almost 4,210 TWh in 2023, [ 1 ] which is more than all other renewable sources combined and also more than nuclear power . [ 2 ]

  4. Hydropower - Wikipedia

    en.wikipedia.org/wiki/Hydropower

    As of 2019, the five largest power stations in the world are conventional hydroelectric power stations with dams. [21] Hydroelectricity can also be used to store energy in the form of potential energy between two reservoirs at different heights with pumped-storage. Water is pumped uphill into reservoirs during periods of low demand to be ...

  5. List of reservoirs by volume - Wikipedia

    en.wikipedia.org/wiki/List_of_reservoirs_by_volume

    The list below largely ignores many natural lakes that have been augmented with the addition of a relatively minor dam. For example, a small dam, two hydroelectric plants, and locks on the outlet of Lake Superior make it possible to artificially control the lake level. Certainly, the great majority of the lake is natural.

  6. Grid energy storage - Wikipedia

    en.wikipedia.org/wiki/Grid_energy_storage

    The stored potential energy is later converted to electricity that is added to the power grid, even when the original energy source is not available. Electricity can be stored directly for a short time in capacitors, somewhat longer electrochemically in batteries , and much longer chemically (e.g. hydrogen), mechanically (e.g. pumped hydropower ...

  7. Energy storage - Wikipedia

    en.wikipedia.org/wiki/Energy_storage

    In pumped hydro systems, energy from the source is used to lift water upward against the force of gravity, giving it potential energy that is later converted to electricity provided to the power grid. Energy can be stored in water pumped to a higher elevation using pumped storage methods or by moving solid matter to higher locations (gravity ...

  8. List of pumped-storage hydroelectric power stations - Wikipedia

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

    The following page lists all pumped-storage hydroelectric power stations that are larger than 1,000 MW in installed generating capacity, which are currently operational or under construction. Those power stations that are smaller than 1,000 MW , and those that are decommissioned or only at a planning/proposal stage may be found in regional ...

  9. Bath County Pumped Storage Station - Wikipedia

    en.wikipedia.org/wiki/Bath_County_Pumped_Storage...

    Construction on the power station, with an original capacity of 2,100 megawatts (2,800,000 hp), began in March 1977 and was completed in December 1985 at a cost of $1.6 billion, [6] [7] Voith-Siemens upgraded the six turbines between 2004 and 2009, increasing power generation to 500.5 MW and pumping power to 480 megawatts (640,000 hp) for each ...