The capacity of solar and wind energy storage systems (ESS) could reach 21.8GW by 2023 as increased renewable energy generation makes the grid increasingly unstable, according to a Navigant Research report.

Anissa Dehamna, senior research analyst with Navigant Research said: “Several of the major markets for renewables, including Germany, Japan and the United States, have enacted rules or legislation encouraging the adoption of energy storage systems for the purpose of integrating variable energy sources onto the grid. These market incentives come in various forms, including outright subsidies for ESS adoption, reforms that change how variable generation is compensated, and adjustments to connection requirements for variable power plants.”

Navigant believes grid operators will be forced to adapt to increasing levels of variable generation on their systems, which will propel the need for ESSs, which would therefore become an integral element of internal strategies to manage grids.