The Gravitricity system acts like a giant battery to balance the electricity coming from renewables. If this technology is one that really makes a difference it’s going to make a difference globally and Experts say such storage systems will be increasingly important as our reliance on wind and solar energy grows. The system works by using excess power to raise heavy weights which keep that energy “stored” until it is needed. Electricity is generated when the weights are dropped. What do you think about the battery ?