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Freqcon GmbH has deployed an energy storage system for the Tallaght Smart Grid Testbed in Ireland that uses Maxwell ultracapacitors and lithium-ion batteries to support grid stability in both residential and industrial settings.

Freqcon's Microgrid Stabilizer addresses the electricity intermittency challenges that accompany high renewable energy penetration. The testbed uses Freqcon's Microgrid Stabilizer for voltage and frequency stabilization, with a combination of lithium-ion batteries and ultracapacitors for active power support in the grid's distributed network. The ultracapacitors perform fast functions such as frequency response, while the batteries are used for peak shifting and operating reserve. As Ireland works toward its goal of 40 percent renewable energy generation by 2020, the Tallaght Smart Grid Testbed, run by the South Dublin County Council and the Micro Electricity Generation Association (MEGA), will demonstrate how energy storage can minimize electricity distribution issues and grid instability.

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