○Electricity Generation and Storage [1]

    Power generation and storage should be sustainable and simple in structure. Prout Village prioritizes the following combination of power equipment.

    The primary power source is a magnesium battery developed by Professor Yabe Takashi of Tokyo Tech. This battery uses thin magnesium plates, which can be stored and carried. By immersing carbon-based material on the positive side in saltwater and using magnesium on the negative side, electricity is generated. This has over 8.5 times the energy density of lithium-ion batteries and is safer than hydrogen fuel, with less risk of ignition. 

    Magnesium is abundant, with approximately 1800 trillion tons in seawater, equivalent to 100,000 years' worth of the annual 10 billion tons of oil used. The risk of depletion is very low, and it can be used globally. The magnesium oxide left after use can be reheated to over 1000°C and reused as a magnesium battery. Professor Yabe also developed a device that gathers sunlight with mirrors and converts it into laser light to reuse magnesium by separating oxygen from magnesium oxide, as well as a desalination device that extracts magnesium and salt from seawater.

    The experimental magnesium battery is 16.3cm wide, 23.7cm deep, 9.7cm high, and weighs about 2kg after water is added, with a maximum output of 250W, enough to power a 450L refrigerator for an hour. Connecting 5 or 10 of these batteries can power larger devices. A car equipped with a 16kg magnesium battery can travel 500km.