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Application Brief: Ultracapacitor Grid Energy Storage for Frequency Response

Application Brief: Ultracapacitor Grid Energy Storage for Frequency Response

| Maxwell Technologies

Sudden imbalances between generation and load can cause frequency variations that risk stable delivery of electricity within the electrical utility system. Rapid growth in the integration of intermittent renewable generating resources combined with the retirement of fossil and nuclear plants means that the grid has less inertia (rotating mass) to maintain frequency. When the frequency deviates outside of controlled setpoints, there is an increased risk for system tripping and power outages.

Maxwell’s Grid Energy Storage System provides grid inertia by stabilizing frequency drops in milliseconds. The system rapidly injects or absorbs power, providing immediate response to the imbalance before slower assets can react. These ultracapacitor (aka supercapacitor) systems deliver high power density in a compact footprint with minimal maintenance.

To learn more about ultracapacitor energy storage for frequency response, get our application brief.

Frequency Application Brief


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