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Energy storage - Fuels & Technologies - IEA
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Energy storage

Technology costs for battery storage continue to drop quickly, largely owing to the rapid scale-up of battery manufacturing for electric vehicles, stimulating deployment in the power sector.

Energy Storage Jpg

Key findings

Annual energy storage deployment, 2013-2019

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In 2019, installations of energy storage technologies fell for the first time in a nearly a decade

For the first time in nearly a decade, annual installations of energy storage technologies fell year-on-year in 2019. Grid-scale storage installations dropped 20%, while residential battery installations doubled, consolidating a shift towards behind-the-meter storage. Continued uncertainty in 2018’s key growth market, Korea, and sluggish activity in Europe and the United States underpinned a lacklustre year for storage. Events in 2019 highlighted how fragile growth in these technologies remains, as they continue to depend heavily on policy intervention through direct support or market creation. Storage needs to return to double-digit growth figures to stay on track with the SDS pathway.