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  2. Flywheel energy storage - Wikipedia

    en.wikipedia.org/wiki/Flywheel_energy_storage

    NASA G2 flywheel. Flywheel energy storage (FES) works by accelerating a rotor to a very high speed and maintaining the energy in the system as rotational energy.When energy is extracted from the system, the flywheel's rotational speed is reduced as a consequence of the principle of conservation of energy; adding energy to the system correspondingly results in an increase in the speed of the ...

  3. Form Energy - Wikipedia

    en.wikipedia.org/wiki/Form_Energy

    The active components of Form Energy's iron-air battery system are iron, water, and air. [7] The basic principle of operation is reversible rusting (oxidation). While discharging, the battery breathes in oxygen from the air and converts iron metal to rust.

  4. Water turbine - Wikipedia

    en.wikipedia.org/wiki/Water_turbine

    The main difference between early water turbines and water wheels is a swirl component of the water which passes energy to a spinning rotor. This additional component of motion allowed the turbine to be smaller than a water wheel of the same power. They could process more water by spinning faster and could harness much greater heads.

  5. Gravity battery - Wikipedia

    en.wikipedia.org/wiki/Gravity_battery

    Pendulum clock driven by three weights as "gravity battery". An old and simple application is the pendulum clock driven by a weight, which at 1 kg and 1 m travel can store nearly 10 Newton-meter [Nm], Joule [J] or Watt-second [Ws], thus 1/3600 of a Watt-hour [Wh], while a typical Lithium-ion battery 18650 cell [2] can hold about 7 Wh, thus 2500 times more at 1/20 of the weight.

  6. Pumped-storage hydroelectricity - Wikipedia

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

    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-peak electric power is typically used to run the pumps. During periods of high electrical demand, the stored water is released through turbines to produce electric power.

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    Get this 'luxury hotel'-like queen set while it's at an all-time low price of just $16. See all deals. In Other News. Finance. Finance. 24/7 Wall St.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Stored Energy at Sea - Wikipedia

    en.wikipedia.org/wiki/Stored_Energy_at_Sea

    This system would use the high water pressure at great water depths to store energy in hollow bodies. Shortly, after their idea was published on 1 April 2011 in the newspaper Frankfurter Allgemeine Zeitung, a consortium of the Fraunhofer Institute for Energy Economics and Energy System Technology and the construction company Hochtief AG was set ...

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