The fast signal allowed specialization by energy storage resources, while enabling them to recharge or discharge without exceeding their energy capacities. (kleinmanenergy.upenn.edu)
Those rules call for regional grid operators to take steps to allow battery storage resources to take part on basically a level playing field in the capacity, energy and ancillary markets. (energynews.us)
On the other hand, a major drawback to using energy storage resources is their finite energy capacity. (kleinmanenergy.upenn.edu)