Latest on Valletta grid energy storage policy

How much energy is stored on the grid?

28,000 MW of storage capacity—on a net summer capacity basis—installed on the U.S. electricity grid.34 Pumped hydroelectric storage accounted for over 80 percent of this capacity, and lithium-ion batteries accounted for nearly 17 percent. Other technologies represent approximately 1 percent of total grid energy storage capacity.

Should grid operators and utilities consider integrating storage systems into the grid?

As grid operators and utilities continue to consider how to integrate these technologies into the grid, they should identify risks and define risk tolerances, according to experts. However, experts said that adoption of storage systems may be limited unless risk tolerances related to reliability are adjusted.

How can energy storage technology improve grid reliability?

For more information, contact Brian Bothwell at (202) 512-6888, Technologies to store energy at the utility-scale could help improve grid reliability, reduce costs, and promote the increased adoption of variable renewable energy sources such as solar and wind. Energy storage technology use has increased along with solar and wind energy.

How can energy storage technology support future grid operations?

Storage technologies have tremendous opportunities to support future grid operations and policymakers at federal and state levels have begun to implement diverse policies. Specifically, the federal government has various national capabilities to support policymaker decisions around energy storage: Energy Storage Grand Challenge.