Lithium-ion batteries dominate the market, but other technologies are emerging, including sodium-ion, flow batteries, liquid CO2 storage, a combination of lithium-ion and clean hydrogen, and gravity and thermal storage. . As America moves closer to a clean energy future, energy from intermittent sources like wind and solar must be stored for use when the wind isn't blowing and the sun isn't shining. The Energy Department is working to develop new storage technologies to tackle this challenge -- from supporting. . Energy storage will likely play a critical role in a low-carbon, flexible, and resilient future grid, the Storage Futures Study (SFS) concludes. The National Renewable Energy Laboratory (NREL) launched the SFS in 2020 with support from the U. In response to rising demand and the challenges renewables have added to grid balancing efforts, the power industry has seen an uptick in. . Stepping up efforts to develop new energy storage technologies is critical in driving renewable energy adoption, achieving China's 30/60 carbon goals, and establishing a new power system. There is a growing need to increase the capacity for storing the energy. .