electrical energy storage (ees), the international trade fair for batteries, energy storage and innovative production, is the industry hotspot for suppliers, manufacturers, distributors and users of stationary and mobile electrical energy storage solutions. It takes place annually in conjunction with Intersolar Europe, the world’s largest exhibition for the solar industry, in Munich, Germany. Covering the entire value chain of innovative battery and energy storage technologies – from components and production to specific user applications – the ees is the ideal platform for all kinds of stakeholders in the rapidly growing energy storage market. The focus at ees is on energy storage solutions suited to energy systems with increasing shares of renewable energy sources. A conference track of several days, co-organized with Intersolar Europe Conference, is accompagnying ees 2015. The energy storage sessions cover the entire spectrum of energy storage related aspects stretching from global market analysis, to technologies, from small and large-scale applications, to second-hand use concepts and the recycling of batteries. In addition, issues related to safety and battery production technologies are presented.