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Energy storage is a technology that holds energy at one time so it can be used at another time. Building more energy storage allows renewable energy sources like wind and solar to power more of our electric grid.
The Office of Electricity''s (OE) Energy Storage Division accelerates bi-directional electrical energy storage technologies as a key component of the future-ready grid. The Division supports applied materials development to identify safe, low-cost, and earth-abundant elements that enable cost-effective long-duration storage.
Thermal energy storage (TES) can help to integrate high shares of renewable energy in power generation, industry, and buildings sectors. TES technologies include molten-salt storage and solid-state and liquid air variants.
In deeply decarbonized energy systems utilizing high penetrations of variable renewable energy (VRE), energy storage is needed to keep the lights on and the electricity flowing when the sun isn''t shining and the wind isn''t blowing — when generation from these VRE resources is low or demand is high.
5 · Pumped hydro, batteries, thermal, and mechanical energy storage store solar, wind, hydro and other renewable energy to supply peaks in demand for power.
Storage enables deep decarbonization of electricity systems. Energy storage is a potential substitute for, or complement to, almost every aspect of a power system, including generation, transmission, and demand flexibility.
Energy storage is the capturing and holding of energy in reserve for later use. Energy storage solutions include pumped-hydro storage, batteries, flywheels and compressed air energy storage.
Thermal energy storage (TES) is a critical enabler for the large-scale deployment of renewable energy and transition to a decarbonized building stock and energy system by 2050. Advances in thermal energy storage would lead to increased energy savings, higher performing and more affordable heat pumps, flexibility for shedding and shifting
Pumped-storage hydropower is the most widely used storage technology and it has significant additional potential in several regions. Batteries are the most scalable type of grid-scale storage and the market has seen strong growth in recent years.