In this first (late) post of the new year, I will go back to a previous post about 18 new grid batteries that might be built in New South Wales. I estimated that the capacity to be build could be somewhere around 1,350 MW.
These batteries would most probably provide frequency control as does the Hornsdale Power Reserve in South Australia. But frequency control is just one small piece in the transition towards renewables. At some point in time, New South Wales will have to provide back-up capacity when they want to increase intermittent sources and cut back on fossil fuels. That made we wonder, if NSW would like to do this backup with batteries, how far would they jump with that 1,350 MW and how much dispatchable power could be displaced? Would that solve much of the back-up problem? Or is this just akin those proverbial gnats peeing on a fire?