So there's been a lot of focus on renewable energy lately and especially about batteries a lot of renewable energy such as solar and wind energy can be on predictable know when the energy no sun no energy so I will come up with gravity batteries look at the picture on this thing it's a huge the building to the one in China and one and taxes the idea is it this say gigantic week on a pulley system using power and then when you need power it drops the weight and stores electricity to put back into the grid at simple as far as I can put it I'm not a scientist but the technology they're coming up with lately is is fantastic

Yeah these gravity batteries are cool man check out the game timber born they use these to produce electricity there beavers it's hilarious