Long-duration energy storage is crucial for transforming the power grid to clean energy sources. It refers to the ability of a power system to discharge electricity over an extended period, allowing for the efficient use and storage of renewable energy.
By storing excess energy generated from wind and solar resources, long-duration storage can prevent curtailment and ensure a reliable power supply during times of high demand or when renewable generation is low. It also offers grid flexibility, allowing energy charging when demand is low and discharging when it is most needed.
The definition of “long duration” varies, but it commonly refers to storage systems with 10 or more hours of capacity. However, there are challenges ahead for long-duration energy storage, including the need for further development and commercialization of emerging technologies, high costs, and regulatory uncertainties.
Despite these challenges, long-duration energy storage holds great potential in enabling a reliable and resilient transition to renewable energy sources while reducing reliance on fossil fuels.