“A lot of analysis has been done around the variety of revenue streams an energy storage system can earn by providing products and services such as energy, capacity or frequency regulation, but what if a storage system can be paid for charging?
System operators could utilize storage to prevent putting more power on the grid than needed, which leads to negative prices. When generators put in a negative bid they are actually offering to pay to ship their power to the grid, and storage could help mitigate the oversupply.
That apparently happened earlier this year at the Hornsdale Power Reserve facility in South Australia, and it paid off handsomely.”
Click here to read more from Utility Dive.