How is the energy storage power generation of the
Looking ahead, the future of energy storage power generation within the Southern Power Grid appears promising and transformative.
Southern Power, a leading U.S. wholesale energy provider and subsidiary ofSouthern Company, has been awarded a 20-year power purchase agreementby Southern California Edison to add a battery-based energy storageresource at Southern Power's Garland Solar Facility in California.
Two forms of storage are suited for long-duration storage: green hydrogen, produced via electrolysis and thermal energy storage. Energy storage is one option to making grids more flexible. Another solution is the use of more dispatchable power plants that can change their output rapidly, for instance peaking power plants to fill in supply gaps.
Any electrical power grid must match electricity production to consumption, both of which vary significantly over time. Energy derived from solar and wind sources varies with the weather on time scales ranging from less than a second to weeks or longer.
As of 2023, the largest form of grid storage is pumped-storage hydroelectricity, with utility-scale batteries and behind-the-meter batteries coming second and third. Lithium-ion batteries are well suited for short-duration storage (under 8 hours), due to their lower cost and sensitivity to degradation at high states of charge.
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