Energy storage is a technology that captures energy generated from renewable sources—such as solar, wind, or hydropower—and saves it to be used at a later time. Most renewable energy sources are intermittent (e.g., solar production is highest when the sun is shining and wind, when the wind is blowing). This means that these sources of energy are not always available when demand is highest (e.g., on a cold winter evening). Renewable energy storage solves this timing mismatch by storing energy until it is actually needed. This storage makes the electrical grid more stable, prevents blackouts, and reduces reliance on fossil fuel power plants.
At the Washington State University Energy Program, we work on projects that help to enhance energy storage options in Washington state and beyond.