Storage is one of a suite of options to provide energy system flexibility, and it can generally be deployed quickly and modularly when and where flexibility is needed.
Its attractiveness should still be assessed relative to other measures, however, such as demand response, power plant retrofits, smart-grid measures that enhance electricity networks, and other options that raise overall flexibility.
Direct support for storage through mandates and policies remains the most common option to incentivise deployment, but greater emphasis should be placed on making regulations transparent and open, and on developing markets for capacity, flexibility and ancillary services so that storage can compete with other technologies and measures.
Last updated Nov 28, 2019
Combined utility-scale and behind-the-meter deployment in selected countries, 2013-2018
Energy storage is one of the few technologies on track under the Sustainable Development Scenario
Energy storage deployment reached a record level in 2018, nearly doubling from 2017. Behind-the-meter storage expansion was particularly strong, almost three times that of 2017. The leading country was Korea, followed by China, the United States and Germany. New markets have emerged quickly wherever governments and utilities have created supportive mechanisms, including in Southeast Asia and South Africa, indicating that storage continues to need policy support.