Under development since 2017, this liquid metal battery (LMB) is about to be let loose on the globe. Consisting of 3 liquid layers; 2 of molten metals and a middle layer of molten salts. The system is self-heating and insulated, but contains no combustible materials - so they can't burn. And they retain all of their charge capacity for at least 5000 cycles (think decades, not years). Modular, safer and cheaper than lithium-ion batteries. https://ambri.com/technology/
Solar energy is great while the sun is shining. But not so useful once night falls. Most people think batteries are the answer, but Stanford University researchers have been working on another option. TEG's (Thermo-electric generator) are energy conversion devices. Basically, by using the temperature differential between one side of the panel and the air, more electricity can be generated ( both during the day and at night). Even better TEG's are reliable, safe, affordable and available right now.https://twitter.com/i/status/1543377040996548614
Energy associated with ocean currents can be captured, just like wind currents can with wind turbines. Ocean turbines can be fixed to the seabed, or float nearer the surface with moorings attached to the seafloor. No one technology has yet emerged as a clear winner, but this Japanese turbine, which has been in development and testing for many years is clearly still in the race. After successful recent trials, the company is set to scale up to a 2 megawatt unit. https://www.sciencealert.com/japan-s-dropping-a-kaiju-sized-turbine-into-the-ocean-to-fish-for-limitless-energy
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