Grid-scale Storage

Storage on the electricity grid has been a peripheral interest of mine for a while. Although it might be argued that 6MW is not really "grid-scale" news of successful trials at the SNS facility in Leighton Buzzard are heartening. Furthermore scale, as in size of facility, is perhaps not the right measure; what is important is scale in terms of overall capacity across the grid and that certainly is ramping up. The need for storage in a system containing substantial intermittent generators is a well rehearsed argument. What is now required is the certainty of a robust and stable regulatory and financial system to support it.