We went to Finland to hear about the new 'sand battery' that will turn stored renewable energy back into power for the electrical grid
We went to Finland to hear about the new 'sand battery' that will turn stored renewable energy back into power for the electrical grid
I did a little bit of digging on this and if it looks like sand batteries are a subcategory of thermal batteries, which in their turn are part of what is called thermal energy storage . Wiki mentioned something that I found fascinating and that I totally didn’t know:
Thermal batteries are very common, and include such familiar items as a hot water bottle. Early examples of thermal batteries include stone and mud cooking stoves, rocks placed in fires, and kilns.