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  2. Wind turbine - Wikipedia

    en.wikipedia.org/wiki/Wind_turbine

    The generator, which is approximately 34% of the wind turbine cost, includes the electrical generator, [64] [65] the control electronics, and most likely a gearbox (e.g., planetary gear box), [66] adjustable-speed drive, or continuously variable transmission [67] component for converting the low-speed incoming rotation to high-speed rotation ...

  3. EcoFlow portable power stations - Wikipedia

    en.wikipedia.org/wiki/EcoFlow_portable_power...

    EcoFlow portable power stations can go from zero to an 80% charge in less than an hour. [ 7][ 9] They provide power from 500 watts [ 10] to 3000 watts. [ 11] Their main products include the River series of lightweight portable batteries designed to provide power for outdoors or in emergencies, [ 7][ 9] but also can be used indoors. [ 12][ 13][ 14]

  4. Solar updraft tower - Wikipedia

    en.wikipedia.org/wiki/Solar_updraft_tower

    The solar updraft tower ( SUT) is a design concept for a renewable-energy power plant for generating electricity from low temperature solar heat. Sunshine heats the air beneath a very wide greenhouse-like roofed collector structure surrounding the central base of a very tall chimney tower. The resulting convection causes a hot air updraft in ...

  5. 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]

  6. Energy tower (downdraft) - Wikipedia

    en.wikipedia.org/wiki/Energy_tower_(downdraft)

    An energy tower (also known as a downdraft energy tower, because the air flows down the tower) is a tall (1,000 meters) and wide (400 meters) hollow cylinder with a water spray system at the top. Pumps lift the water to the top of the tower and then spray the water inside the tower. Evaporation of water cools the hot, dry air hovering at the top.

  7. Flywheel energy storage - Wikipedia

    en.wikipedia.org/wiki/Flywheel_energy_storage

    Flywheels may be used to store energy generated by wind turbines during off-peak periods or during high wind speeds. In 2010, Beacon Power began testing of their Smart Energy 25 (Gen 4) flywheel energy storage system at a wind farm in Tehachapi, California. The system was part of a wind power/flywheel demonstration project being carried out for ...

  8. History of wind power - Wikipedia

    en.wikipedia.org/wiki/History_of_wind_power

    The MOD-2 wind turbine cluster of three turbines produced 7.5 megawatts of power in 1981. In 1987, the MOD-5B was the largest single wind turbine operating in the world with a rotor diameter of nearly 100 meters and a rated power of 3.2 megawatts. It demonstrated an availability of 95 percent, an unparalleled level for a new first-unit wind ...

  9. Microgeneration - Wikipedia

    en.wikipedia.org/wiki/Microgeneration

    With appropriate power conversion, solar PV panels can run the same electric appliances as electricity from other sources. [32] Passive solar water heating is another effective method of utilizing solar power. The simplest method is the solar (or a black plastic) bag. Set between 5 and 20 litres (1 and 5 US gal) out in the sun and allow to heat.

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