The tumbling cost of batteries is set to drive a boom in the installation of energy storage systems around the world from now to 2040, according to the latest annual forecast from research company Bloomberg New Energy Finance (BNEF).
The global energy storage market will grow to a cumulative 942GW/2,857GWh by 2040, attracting $1.2 trillion in investment over the next 22 years. Cheap batteries mean that wind and solar will increasingly be able to run when the wind isn’t blowing and the sun isn’t shining.
BNEF’s latest “Long-Term Energy Storage Outlook” sees the capital cost of a utility-scale lithium-ion battery storage system sliding another 52% between 2018 and 2030, on top of the steep declines seen earlier this decade. This will transform the economic case for batteries in both the vehicle and the electricity sector.
Yayoi Sekine, energy storage analyst for BloombergNEF and co-author of the report, said: “We have become much more bullish about storage deployments since our last forecast a year ago. This is partly due to faster-than-expected falls in storage system costs, and partly to a greater focus on two emerging applications for the technology — electric vehicle charging, and energy access in remote regions.”
Logan Goldie-Scot, head of energy storage at BNEF, added: “We see energy storage growing to a point where it is equivalent to 7% of the total installed power capacity globally in 2040. The majority of storage capacity will be utility-scale until the mid-2030s, when behind the meter applications overtake.”
Behind-the-meter, or BTM, installations will be sited at business and industrial premises, and at millions of residential properties. For their owners, they will perform a variety of tasks, including shifting grid demand in order to reduce electricity costs, storing excess rooftop solar output, improving power quality and reliability, and earning fees for helping to smooth voltage on the grid.
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