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2. Grid energy storage - Wikipedia

   en.wikipedia.org/wiki/Grid_energy_storage

   A Carnot battery is a type of energy storage system that stores electricity in heat storage and converts the stored heat back to electricity via thermodynamic cycles (for instance, a turbine). While less efficient than pumped hydro or battery storage, this type of system is expected to be cheap and can provide long-duration storage.

3. Stand-alone power system - Wikipedia

   en.wikipedia.org/wiki/Stand-alone_power_system

   A typical stand-alone solar PV system at a sewage treatment plant in Santuari de Lluc, Spain. Stand-alone photovoltaic power systems are independent of the utility grid and may use solar panels only or may be used in conjunction with a diesel generator, a wind turbine or batteries. [1] [2]

4. Hybrid power - Wikipedia

   en.wikipedia.org/wiki/Hybrid_power

   When solar thermal storage plant is forced to idle due to lack of sunlight locally during cloudy days in monsoon season, it is also possible to consume (similar to a lesser efficient, huge capacity and low cost battery storage system) the cheap surplus / infirm power from solar PV, wind and hydro power plants by heating the hot molten salt to ...

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. Molten-salt battery - Wikipedia

   en.wikipedia.org/wiki/Molten-salt_battery

   Rechargeable liquid-metal batteries are used for industrial power backup, special electric vehicles [citation needed] and for grid energy storage, to balance out intermittent renewable power sources such as solar panels and wind turbines.

7. Energy storage - Wikipedia

   en.wikipedia.org/wiki/Energy_storage

   Multiple manufacturers produce rechargeable battery systems for storing energy, generally to hold surplus energy from home solar or wind generation. Today, for home energy storage, Li-ion batteries are preferable to lead-acid ones given their similar cost but much better performance. [84] Tesla Motors produces two models of the Tesla Powerwall.