Quantifying network flexibility requirements in terms of energy storage

The energy storage requirement modelling tool outlined here uses an extension of the pinch methodology to quantify network flexibility required due greater variable renewable (VRE) integration. Quantifying this as magnitude a function duration provides improved understanding fundamental balancing problem. Identification impact that key decision variables, such location, VRE penetration and is supplied through wind have on these requirements has been enabled by condensing dependence within two non-dimensional indices: index index. These indices, in addition size required, tipping-points levels beyond which short-term not sufficient be identified for UK Australian locations considered. In how effective provision excess mitigation requirements. This analysis shows seasonal at high all combinations solar sources, but can needed with low 50% certain locations. tipping-point highly specific location wind, varying between 30% penetration.