Executive overview: energy storage options for a sustainable energy future

Sustainability of electric power systems will involve very large use of renewable energy sources for power production. Some of these sources, e.g. wind and solar, have a characteristic stochastic behaviour, which makes their output power production difficult to predict and have high power output fluctuations. Energy storage devices will be needed at different locations in the power system, to level the mismatch between renewable power generators and consumption and/or to store the surplus of power from renewable sources for later use during nongeneration time periods or low power generation time periods. This presentation will give an overview of different storage technologies and how they can be used in a sustainable power system.