Framtidens energilagring : en studie av befintliga samt potentiella metoder för lagring av förnybar el på ett hållbart sätt

Sammanfattning: In today’s society there is an increasing demand for renewable energy sources such as sun and wind power. These sources are intermittent, and energy storage is therefore needed to ensure a constant power supply. This report compares pumped hydro energy storage (PHES), compressed air energy storage (CAES), flywheels, batteries, super magnetic energy storage (SMES) and hydrogen energy storage. The opportunities for further development are limited for PHES and CAES in comparison with the other technologies. Lithium-ion batteries and hydrogen energy storage are considered to have the most potential in the future. This is based on the high energy density and the high demand from other industries, the automotive industry in particular. The most limiting factor for both of these technologies is the high cost. Currently there is no method that alone can handle all types of energy storage that is needed, but lithium-ion batteries and hydrogen energy storage will play a key role in the future energy storage.