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2. 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 1/360 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.

3. Air ioniser - Wikipedia

   en.wikipedia.org/wiki/Air_ioniser

   An air ioniser (or negative ion generator or Chizhevsky's chandelier) is a device that uses high voltage to ionise (electrically charge) air molecules. Negative ions, or anions, are particles with one or more extra electrons, conferring a net negative charge to the particle. Cations are positive ions missing one or more electrons, resulting in ...

4. Vaneless ion wind generator - Wikipedia

   en.wikipedia.org/wiki/Vaneless_ion_wind_generator

   Sustainable energy. A vaneless ion wind generator or power fence is a device that generates electrical energy by using the wind to move charged particles across an electric field . Ion wind generators are not commercially available, though working prototypes and proofs of concept have been created.

5. It’s a great time to buy a solar generator - Engadget

   www.engadget.com/its-a-great-time-to-buy-a-solar...

   Cost for solar panels and batteries have fallen dramatically in the last few years, with Our World in Data reporting that the cost of a panel has dropped from $2.32 per watt in 2010 to just $0.26 ...

6. The hydrogen-powered generator that was almost a home ...

   www.engadget.com/2016-11-24-home-shopping...

   It includes a few standard 110v power sockets as well as USB connectors to keep your phone going. The obvious use case is in the home as a backup power supply in case of emergency, but iHOD also ...

7. Tesla wants to make every home a distributed power plant

   techcrunch.com/2021/04/26/tesla-wants-to-make...

   Tesla CEO Elon Musk wants to turn every home into a distributed power plant that would generate, store and even deliver energy back into the electricity grid, all using the company’s products.