Many people talk about energy shortages, but the reality is the US enjoys a surplus of electricity. That’s good and bad news. The good news is we don’t have an immediate need to build large scale base load capacity. The bad news is electrons can be very difficult to inventory in their native state. How best to do this was the subject of Storage Week hosted by InfoCast. This meeting discussed options for grid-scale electricity storage and also how to integrate this with the growing renewable energy base. The options are dizzying: Lithium-Ion or lead acid battery or super capacitors? Pumped hydro or compressed air? Stationary battery or flywheel? Do you need peak load relief or frequency leveling? Storage for hours of energy or only a few seconds?