Battery storage is a suitable solution for utility-scale renewable projects. Due to the intermittent power generation of renewable energy, storage solutions such as utility-scale battery storage is appropriate to store excess generated electricity from solar and wind in hot and windy hours of daytime to consume in cold and calm hours of nighttime.
According to U.S Energy Information Administration (EIA), utility-scale battery storage units (units of one megawatt (MW) or greater power capacity) are a newer electric power resource, and their use has been growing in recent years. Operating utility-scale battery storage power capacity has more than quadrupled from the end of 2014 (214 MW) through March 2019 (899 MW).
It is also forecasted that utility-scale battery storage capacity will reach 2,500 MW by 2023 if nothing is changed. In other words, if no current operating capacity is retired and added capacity is increased based on previous plans, the capacity will become 10 times by 2023 compared to the end of 2014.
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