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  2. Hoopeston Wind Farm - Wikipedia

    en.wikipedia.org/wiki/Hoopeston_Wind_Farm

    The Hoopeston Wind Farm is a 49-turbine wind farm in northern Vermilion County in Illinois. [1] Investment capital for the project was organized by IKEA, which did so to earn clean-energy tax credits for the stores that it operates. IKEA hired Apex Clean Energy to build the complex. [2]

  3. Mechanically powered flashlight - Wikipedia

    en.wikipedia.org/wiki/Mechanically_powered...

    The best designs use a supercapacitor instead of a rechargeable battery, since these have a longer working life than a battery. This, along with the long-life light-emitting diode which does not burn out like an incandescent bulb, give the flashlight a long lifetime, making it a useful emergency light. A disadvantage of many current models is ...

  4. Compact fluorescent lamp - Wikipedia

    en.wikipedia.org/wiki/Compact_fluorescent_lamp

    Philips Lighting ceased research on compact fluorescents in 2008 and began devoting the bulk of its research and development budget to solid-state lighting such as LED lighting. [17] The rise of LED lighting, however, significantly affected CFL sales and production. As a result of decreasing cost and better features, customers increasingly ...

  5. Solar sail - Wikipedia

    en.wikipedia.org/wiki/Solar_sail

    The ship would first drop into an orbit making a close pass to the Sun, to maximize the solar energy input on the sail, then it would begin to accelerate away from the system using the light from the Sun. Acceleration will drop approximately as the inverse square of the distance from the Sun, and beyond some distance, the ship would no longer ...

  6. Electric Aircraft Corporation ElectraFlyer-ULS - Wikipedia

    en.wikipedia.org/wiki/Electric_Aircraft...

    The drivetrain includes a Fishman-designed 20 hp (15 kW) motor, electronic controller and 3.3 kWh LiPo battery pack. An additional 3.3 kWh battery pack is a US$5,000 option, which gives a two-hour endurance. A two-bladed fixed pitch propeller is standard equipment, but a folding carbon fiber propeller is optional. [1] [2]