Reasons to be Cheerful explains how “gravity batteries” are giving former mines a second life—while offering an economic and ...

Using "gravity batteries," these underground facilities aim to tackle one of renewable energy's greatest challenges: storage. Reasons to be Cheerful reports that the method is simple: Excess ...

Energy Vault Holdings, Inc.’s NRGV share price has surged by 8.92%, which has investors questioning if this is right time to ...

Energy innovators around the world plan to harvest more power from abandoned coal mines, but not by digging up dirty deposits ...