This special supplement on energy storage looks at a global market which has already come a long way already and shows no sign of looking back. From residential to grid-scale, to microgrids and vehicle-to-grid, from safety to finance, we’ve condensed some of the biggest topics and themes into a handy collection which we hope will help illuminate and inform you all. Energy storage is growing into a cornerstone of the grid (and is arguably even more important off-grid); a vital component of decentralised, decarbonised and even digitalised future energy systems. Yet so many misconceptions and concerns remain and there is still so much work to be done in helping stakeholders gain a better understanding of what batteries – and other forms of energy storage – can do.