The cost of electricity from renewable energy technologies has fallen steadily, and in some cases dramatically, in recent years.

This brief focuses on electricity storage technologies to facilitate the integration of higher shares of renewable energy into the power mix.

A practical guide for decision-makers and project developers on the available energy storage solutions and their successful applications in the context of islands communities. The report also includes various best practice cases and different scenarios and strategies. It is developed as part of the IRENA Renewables in Islands Initiative (IRII).

Electricity storage will be crucial factor for scaling up solar and wind power. Yet electricity markets may not account for the system value of storage.

This study shows that battery electricity storage systems offer enormous deployment and cost-reduction potential. By 2030, total installed costs could fall between 50% and 60% (and battery cell costs by even more), driven by optimisation of manufacturing facilities, combined with better combinations and reduced use of materials.