Big batteries are actually very easy, and getting cheap enough that they account for a significant chunk of new grid assets when there are enough renewables. T

Big batteries are actually very easy, and getting cheap enough that they account for a significant chunk of new grid assets when there are enough renewables. Take the Texas ERCOT market, which is the closest thing to a free electricity market that exists in the US. A huge chunk of new grid assets are batteries, becuase they are one of the most profitable things to install right now (see the map at the bottom of the page) https://www.eia.gov/todayinenergy/detail.php?id=64586 https://www.eia.gov/todayinenergy/detail.php?id=64586 Additionally, many people are now buying EVs, and an EV stores 2-5 days worth of electricity. If big batteries on wheels are commonplace, then simpler and cheaper immobile batteries are pretty easy too.